./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/queue.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:46:55,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:46:55,768 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:46:55,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:46:55,772 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:46:55,819 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:46:55,819 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:46:55,820 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:46:55,821 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:46:55,822 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:46:55,822 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:46:55,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:46:55,823 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:46:55,824 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:46:55,826 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:46:55,827 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:46:55,827 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:46:55,827 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:46:55,827 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:46:55,828 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:46:55,828 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:46:55,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:46:55,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:46:55,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:46:55,833 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:46:55,833 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:46:55,833 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:46:55,833 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:46:55,834 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:46:55,834 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:46:55,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:46:55,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:46:55,834 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:46:55,835 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:46:55,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:46:55,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:46:55,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:46:55,836 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:46:55,836 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:46:55,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:46:55,837 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:46:55,837 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:46:55,838 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:46:55,838 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:46:55,838 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2024-11-19 13:46:56,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:46:56,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:46:56,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:46:56,111 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:46:56,112 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:46:56,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue.i [2024-11-19 13:46:57,621 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:46:57,890 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:46:57,890 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2024-11-19 13:46:57,907 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82ad96af0/dd11501bbc1c4fb7b062013173668df8/FLAGfabe61272 [2024-11-19 13:46:58,182 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82ad96af0/dd11501bbc1c4fb7b062013173668df8 [2024-11-19 13:46:58,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:46:58,186 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:46:58,187 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:46:58,187 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:46:58,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:46:58,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:46:58" (1/1) ... [2024-11-19 13:46:58,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@499ddcd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:58, skipping insertion in model container [2024-11-19 13:46:58,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:46:58" (1/1) ... [2024-11-19 13:46:58,237 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:46:58,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:46:58,670 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:46:58,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:46:58,821 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:46:58,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:58 WrapperNode [2024-11-19 13:46:58,821 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:46:58,822 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:46:58,823 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:46:58,823 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:46:58,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:58" (1/1) ... [2024-11-19 13:46:58,856 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:58" (1/1) ... [2024-11-19 13:46:58,904 INFO L138 Inliner]: procedures = 274, calls = 107, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 313 [2024-11-19 13:46:58,905 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:46:58,908 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:46:58,908 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:46:58,908 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:46:58,919 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:58" (1/1) ... [2024-11-19 13:46:58,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:58" (1/1) ... [2024-11-19 13:46:58,924 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:58" (1/1) ... [2024-11-19 13:46:58,956 INFO L175 MemorySlicer]: Split 92 memory accesses to 5 slices as follows [2, 8, 5, 23, 54]. 59 percent of accesses are in the largest equivalence class. The 58 initializations are split as follows [2, 8, 5, 20, 23]. The 16 writes are split as follows [0, 0, 0, 2, 14]. [2024-11-19 13:46:58,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:58" (1/1) ... [2024-11-19 13:46:58,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:58" (1/1) ... [2024-11-19 13:46:58,974 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:58" (1/1) ... [2024-11-19 13:46:58,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:58" (1/1) ... [2024-11-19 13:46:58,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:58" (1/1) ... [2024-11-19 13:46:58,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:58" (1/1) ... [2024-11-19 13:46:58,997 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:46:59,000 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:46:59,000 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:46:59,000 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:46:59,001 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:58" (1/1) ... [2024-11-19 13:46:59,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:46:59,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:46:59,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 13:46:59,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 13:46:59,075 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 13:46:59,076 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 13:46:59,076 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 13:46:59,076 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 13:46:59,076 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 13:46:59,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 13:46:59,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 13:46:59,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 13:46:59,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 13:46:59,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 13:46:59,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 13:46:59,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 13:46:59,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 13:46:59,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 13:46:59,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 13:46:59,078 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 13:46:59,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:46:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:46:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 13:46:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 13:46:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 13:46:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 13:46:59,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:46:59,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:46:59,081 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 13:46:59,239 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:46:59,244 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:46:59,775 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:46:59,776 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 13:47:00,284 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 13:47:00,284 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 13:47:00,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:00 BoogieIcfgContainer [2024-11-19 13:47:00,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 13:47:00,287 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 13:47:00,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 13:47:00,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 13:47:00,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:46:58" (1/3) ... [2024-11-19 13:47:00,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49861dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:00, skipping insertion in model container [2024-11-19 13:47:00,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:58" (2/3) ... [2024-11-19 13:47:00,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49861dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:00, skipping insertion in model container [2024-11-19 13:47:00,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:00" (3/3) ... [2024-11-19 13:47:00,294 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2024-11-19 13:47:00,311 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 13:47:00,311 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-19 13:47:00,311 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 13:47:00,386 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 13:47:00,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 186 flow [2024-11-19 13:47:00,461 INFO L124 PetriNetUnfolderBase]: 10/84 cut-off events. [2024-11-19 13:47:00,463 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 13:47:00,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 10/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 219 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2024-11-19 13:47:00,470 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 186 flow [2024-11-19 13:47:00,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 80 transitions, 169 flow [2024-11-19 13:47:00,487 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:47:00,495 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;@79906e82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:47:00,496 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-19 13:47:00,504 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:47:00,504 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-11-19 13:47:00,504 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:47:00,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:00,505 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:00,506 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:00,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:00,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1519906022, now seen corresponding path program 1 times [2024-11-19 13:47:00,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:00,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268425313] [2024-11-19 13:47:00,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:00,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:01,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:01,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268425313] [2024-11-19 13:47:01,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268425313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:01,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:01,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:47:01,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372168210] [2024-11-19 13:47:01,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:01,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:01,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:01,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:01,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:01,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-19 13:47:01,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 80 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:01,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:01,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-19 13:47:01,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:01,726 INFO L124 PetriNetUnfolderBase]: 1236/2547 cut-off events. [2024-11-19 13:47:01,726 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-19 13:47:01,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4531 conditions, 2547 events. 1236/2547 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 15910 event pairs, 205 based on Foata normal form. 48/2218 useless extension candidates. Maximal degree in co-relation 4460. Up to 1613 conditions per place. [2024-11-19 13:47:01,751 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 74 selfloop transitions, 6 changer transitions 0/110 dead transitions. [2024-11-19 13:47:01,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 110 transitions, 395 flow [2024-11-19 13:47:01,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:01,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:01,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-11-19 13:47:01,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2024-11-19 13:47:01,770 INFO L175 Difference]: Start difference. First operand has 78 places, 80 transitions, 169 flow. Second operand 4 states and 210 transitions. [2024-11-19 13:47:01,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 110 transitions, 395 flow [2024-11-19 13:47:01,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 110 transitions, 388 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:01,778 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 204 flow [2024-11-19 13:47:01,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-11-19 13:47:01,785 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2024-11-19 13:47:01,785 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 204 flow [2024-11-19 13:47:01,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:01,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:01,786 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:01,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 13:47:01,786 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:01,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:01,788 INFO L85 PathProgramCache]: Analyzing trace with hash -127552721, now seen corresponding path program 1 times [2024-11-19 13:47:01,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:01,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314553429] [2024-11-19 13:47:01,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:01,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:02,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:02,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314553429] [2024-11-19 13:47:02,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314553429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:02,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:02,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:47:02,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181528583] [2024-11-19 13:47:02,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:02,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:02,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:02,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:02,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:02,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-19 13:47:02,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:02,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:02,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-19 13:47:02,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:02,546 INFO L124 PetriNetUnfolderBase]: 1242/2600 cut-off events. [2024-11-19 13:47:02,547 INFO L125 PetriNetUnfolderBase]: For 456/460 co-relation queries the response was YES. [2024-11-19 13:47:02,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4910 conditions, 2600 events. 1242/2600 cut-off events. For 456/460 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 16670 event pairs, 264 based on Foata normal form. 40/2318 useless extension candidates. Maximal degree in co-relation 4140. Up to 1757 conditions per place. [2024-11-19 13:47:02,563 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 82 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2024-11-19 13:47:02,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 118 transitions, 460 flow [2024-11-19 13:47:02,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:47:02,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:47:02,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 250 transitions. [2024-11-19 13:47:02,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-11-19 13:47:02,571 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 204 flow. Second operand 5 states and 250 transitions. [2024-11-19 13:47:02,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 118 transitions, 460 flow [2024-11-19 13:47:02,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 118 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:02,575 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 221 flow [2024-11-19 13:47:02,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2024-11-19 13:47:02,576 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2024-11-19 13:47:02,577 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 221 flow [2024-11-19 13:47:02,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:02,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:02,577 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:02,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 13:47:02,578 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:02,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:02,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1975914034, now seen corresponding path program 1 times [2024-11-19 13:47:02,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:02,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480596229] [2024-11-19 13:47:02,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:02,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:02,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:02,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480596229] [2024-11-19 13:47:02,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480596229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:02,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:02,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:02,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657190041] [2024-11-19 13:47:02,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:02,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:47:02,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:02,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:47:02,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 13:47:02,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-19 13:47:02,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:02,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:02,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-19 13:47:02,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:03,296 INFO L124 PetriNetUnfolderBase]: 1322/2710 cut-off events. [2024-11-19 13:47:03,297 INFO L125 PetriNetUnfolderBase]: For 536/554 co-relation queries the response was YES. [2024-11-19 13:47:03,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5219 conditions, 2710 events. 1322/2710 cut-off events. For 536/554 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 17287 event pairs, 266 based on Foata normal form. 44/2400 useless extension candidates. Maximal degree in co-relation 4439. Up to 1803 conditions per place. [2024-11-19 13:47:03,314 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 103 selfloop transitions, 11 changer transitions 0/144 dead transitions. [2024-11-19 13:47:03,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 144 transitions, 589 flow [2024-11-19 13:47:03,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:47:03,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:47:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 341 transitions. [2024-11-19 13:47:03,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5664451827242525 [2024-11-19 13:47:03,317 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 221 flow. Second operand 7 states and 341 transitions. [2024-11-19 13:47:03,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 144 transitions, 589 flow [2024-11-19 13:47:03,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 144 transitions, 575 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:03,323 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 276 flow [2024-11-19 13:47:03,324 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2024-11-19 13:47:03,324 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2024-11-19 13:47:03,324 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 276 flow [2024-11-19 13:47:03,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:03,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:03,325 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:03,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 13:47:03,325 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:03,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:03,326 INFO L85 PathProgramCache]: Analyzing trace with hash -199380083, now seen corresponding path program 1 times [2024-11-19 13:47:03,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:03,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947733986] [2024-11-19 13:47:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:03,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:03,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:03,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947733986] [2024-11-19 13:47:03,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947733986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:03,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:03,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:47:03,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542419618] [2024-11-19 13:47:03,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:03,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:47:03,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:03,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:47:03,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:47:03,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-11-19 13:47:03,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:03,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:03,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-11-19 13:47:03,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:03,743 INFO L124 PetriNetUnfolderBase]: 1023/2392 cut-off events. [2024-11-19 13:47:03,744 INFO L125 PetriNetUnfolderBase]: For 554/554 co-relation queries the response was YES. [2024-11-19 13:47:03,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 2392 events. 1023/2392 cut-off events. For 554/554 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14077 event pairs, 483 based on Foata normal form. 41/2132 useless extension candidates. Maximal degree in co-relation 4354. Up to 885 conditions per place. [2024-11-19 13:47:03,759 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 64 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2024-11-19 13:47:03,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 97 transitions, 374 flow [2024-11-19 13:47:03,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:47:03,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:47:03,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-11-19 13:47:03,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6821705426356589 [2024-11-19 13:47:03,761 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 276 flow. Second operand 3 states and 176 transitions. [2024-11-19 13:47:03,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 97 transitions, 374 flow [2024-11-19 13:47:03,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 97 transitions, 335 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-11-19 13:47:03,767 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 169 flow [2024-11-19 13:47:03,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-11-19 13:47:03,768 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -3 predicate places. [2024-11-19 13:47:03,769 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 169 flow [2024-11-19 13:47:03,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:03,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:03,770 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:03,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 13:47:03,770 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:03,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:03,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1669265840, now seen corresponding path program 1 times [2024-11-19 13:47:03,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:03,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783484868] [2024-11-19 13:47:03,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:03,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:03,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:03,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:03,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783484868] [2024-11-19 13:47:03,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783484868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:03,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:03,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:03,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508914282] [2024-11-19 13:47:03,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:03,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:03,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:03,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:03,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:03,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 86 [2024-11-19 13:47:03,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:03,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:03,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 86 [2024-11-19 13:47:03,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:04,392 INFO L124 PetriNetUnfolderBase]: 1890/4150 cut-off events. [2024-11-19 13:47:04,393 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-11-19 13:47:04,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7405 conditions, 4150 events. 1890/4150 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 26847 event pairs, 960 based on Foata normal form. 138/3776 useless extension candidates. Maximal degree in co-relation 7400. Up to 1980 conditions per place. [2024-11-19 13:47:04,422 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 113 selfloop transitions, 3 changer transitions 0/144 dead transitions. [2024-11-19 13:47:04,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 144 transitions, 554 flow [2024-11-19 13:47:04,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:04,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2024-11-19 13:47:04,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7325581395348837 [2024-11-19 13:47:04,425 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 169 flow. Second operand 4 states and 252 transitions. [2024-11-19 13:47:04,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 144 transitions, 554 flow [2024-11-19 13:47:04,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 144 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:04,433 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 190 flow [2024-11-19 13:47:04,435 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2024-11-19 13:47:04,436 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2024-11-19 13:47:04,436 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 190 flow [2024-11-19 13:47:04,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:04,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:04,437 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:04,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 13:47:04,437 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:04,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:04,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1296984019, now seen corresponding path program 1 times [2024-11-19 13:47:04,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:04,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135971146] [2024-11-19 13:47:04,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:04,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:04,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:04,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135971146] [2024-11-19 13:47:04,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135971146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:04,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:04,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:47:04,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602624507] [2024-11-19 13:47:04,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:04,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:47:04,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:04,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:47:04,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 13:47:04,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-11-19 13:47:04,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:04,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:04,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-11-19 13:47:04,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:05,233 INFO L124 PetriNetUnfolderBase]: 1715/3861 cut-off events. [2024-11-19 13:47:05,234 INFO L125 PetriNetUnfolderBase]: For 784/904 co-relation queries the response was YES. [2024-11-19 13:47:05,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7365 conditions, 3861 events. 1715/3861 cut-off events. For 784/904 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 25084 event pairs, 279 based on Foata normal form. 0/3419 useless extension candidates. Maximal degree in co-relation 7358. Up to 2409 conditions per place. [2024-11-19 13:47:05,257 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 75 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2024-11-19 13:47:05,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 110 transitions, 468 flow [2024-11-19 13:47:05,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:47:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:47:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 252 transitions. [2024-11-19 13:47:05,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.586046511627907 [2024-11-19 13:47:05,262 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 190 flow. Second operand 5 states and 252 transitions. [2024-11-19 13:47:05,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 110 transitions, 468 flow [2024-11-19 13:47:05,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 110 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:05,265 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 196 flow [2024-11-19 13:47:05,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2024-11-19 13:47:05,267 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 4 predicate places. [2024-11-19 13:47:05,267 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 196 flow [2024-11-19 13:47:05,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:05,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:05,268 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:05,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 13:47:05,268 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:05,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:05,269 INFO L85 PathProgramCache]: Analyzing trace with hash -649880907, now seen corresponding path program 1 times [2024-11-19 13:47:05,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:05,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021596608] [2024-11-19 13:47:05,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:05,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:06,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:06,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021596608] [2024-11-19 13:47:06,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021596608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:06,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:06,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 13:47:06,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102690286] [2024-11-19 13:47:06,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:06,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 13:47:06,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:06,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 13:47:06,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:47:06,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-11-19 13:47:06,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 196 flow. Second operand has 8 states, 8 states have (on average 30.125) internal successors, (241), 8 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:06,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:06,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-11-19 13:47:06,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:07,129 INFO L124 PetriNetUnfolderBase]: 2309/4808 cut-off events. [2024-11-19 13:47:07,130 INFO L125 PetriNetUnfolderBase]: For 919/1071 co-relation queries the response was YES. [2024-11-19 13:47:07,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9585 conditions, 4808 events. 2309/4808 cut-off events. For 919/1071 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 31255 event pairs, 444 based on Foata normal form. 22/4298 useless extension candidates. Maximal degree in co-relation 9578. Up to 2448 conditions per place. [2024-11-19 13:47:07,165 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 135 selfloop transitions, 8 changer transitions 0/169 dead transitions. [2024-11-19 13:47:07,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 169 transitions, 783 flow [2024-11-19 13:47:07,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 13:47:07,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 13:47:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 379 transitions. [2024-11-19 13:47:07,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4896640826873385 [2024-11-19 13:47:07,168 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 196 flow. Second operand 9 states and 379 transitions. [2024-11-19 13:47:07,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 169 transitions, 783 flow [2024-11-19 13:47:07,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 169 transitions, 773 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 13:47:07,176 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 223 flow [2024-11-19 13:47:07,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=223, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-11-19 13:47:07,177 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2024-11-19 13:47:07,177 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 223 flow [2024-11-19 13:47:07,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.125) internal successors, (241), 8 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:07,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:07,178 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:07,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 13:47:07,178 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:07,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:07,179 INFO L85 PathProgramCache]: Analyzing trace with hash -227494426, now seen corresponding path program 1 times [2024-11-19 13:47:07,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:07,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429642892] [2024-11-19 13:47:07,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:07,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:07,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:07,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429642892] [2024-11-19 13:47:07,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429642892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:07,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292162689] [2024-11-19 13:47:07,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:07,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:07,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:07,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:07,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 13:47:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:07,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 13:47:07,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:07,490 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:07,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292162689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:07,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:07,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-19 13:47:07,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794112005] [2024-11-19 13:47:07,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:07,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:47:07,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:07,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:47:07,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 13:47:07,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2024-11-19 13:47:07,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 223 flow. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:07,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:07,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2024-11-19 13:47:07,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:08,058 INFO L124 PetriNetUnfolderBase]: 2140/4297 cut-off events. [2024-11-19 13:47:08,059 INFO L125 PetriNetUnfolderBase]: For 819/903 co-relation queries the response was YES. [2024-11-19 13:47:08,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9002 conditions, 4297 events. 2140/4297 cut-off events. For 819/903 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 26972 event pairs, 111 based on Foata normal form. 83/4006 useless extension candidates. Maximal degree in co-relation 8993. Up to 2115 conditions per place. [2024-11-19 13:47:08,078 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 106 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2024-11-19 13:47:08,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 139 transitions, 613 flow [2024-11-19 13:47:08,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:08,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-11-19 13:47:08,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-11-19 13:47:08,080 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 223 flow. Second operand 4 states and 233 transitions. [2024-11-19 13:47:08,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 139 transitions, 613 flow [2024-11-19 13:47:08,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 139 transitions, 591 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 13:47:08,085 INFO L231 Difference]: Finished difference. Result has 87 places, 79 transitions, 221 flow [2024-11-19 13:47:08,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=87, PETRI_TRANSITIONS=79} [2024-11-19 13:47:08,086 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-11-19 13:47:08,086 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 79 transitions, 221 flow [2024-11-19 13:47:08,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:08,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:08,087 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:08,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 13:47:08,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:08,292 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:08,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:08,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1328529243, now seen corresponding path program 1 times [2024-11-19 13:47:08,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:08,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336996869] [2024-11-19 13:47:08,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:08,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:09,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:09,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336996869] [2024-11-19 13:47:09,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336996869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:09,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:09,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 13:47:09,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524663122] [2024-11-19 13:47:09,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:09,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 13:47:09,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:09,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 13:47:09,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 13:47:09,206 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-11-19 13:47:09,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 79 transitions, 221 flow. Second operand has 10 states, 10 states have (on average 29.7) internal successors, (297), 10 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:09,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:09,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-11-19 13:47:09,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:09,937 INFO L124 PetriNetUnfolderBase]: 2277/4743 cut-off events. [2024-11-19 13:47:09,938 INFO L125 PetriNetUnfolderBase]: For 2375/2447 co-relation queries the response was YES. [2024-11-19 13:47:09,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10228 conditions, 4743 events. 2277/4743 cut-off events. For 2375/2447 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 30858 event pairs, 444 based on Foata normal form. 22/4311 useless extension candidates. Maximal degree in co-relation 10218. Up to 2448 conditions per place. [2024-11-19 13:47:09,968 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 134 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2024-11-19 13:47:09,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 167 transitions, 866 flow [2024-11-19 13:47:09,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 13:47:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 13:47:09,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 378 transitions. [2024-11-19 13:47:09,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-11-19 13:47:09,970 INFO L175 Difference]: Start difference. First operand has 87 places, 79 transitions, 221 flow. Second operand 9 states and 378 transitions. [2024-11-19 13:47:09,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 167 transitions, 866 flow [2024-11-19 13:47:09,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 167 transitions, 783 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 13:47:09,976 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 220 flow [2024-11-19 13:47:09,976 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=220, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-11-19 13:47:09,977 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2024-11-19 13:47:09,978 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 220 flow [2024-11-19 13:47:09,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.7) internal successors, (297), 10 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:09,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:09,979 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:09,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 13:47:09,979 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:09,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:09,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1537608300, now seen corresponding path program 1 times [2024-11-19 13:47:09,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:09,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071685045] [2024-11-19 13:47:09,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:09,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:47:10,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:10,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071685045] [2024-11-19 13:47:10,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071685045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:10,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:10,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:10,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120041811] [2024-11-19 13:47:10,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:10,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:10,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:10,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:10,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:10,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2024-11-19 13:47:10,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:10,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:10,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2024-11-19 13:47:10,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:10,508 INFO L124 PetriNetUnfolderBase]: 1995/4219 cut-off events. [2024-11-19 13:47:10,508 INFO L125 PetriNetUnfolderBase]: For 1058/1102 co-relation queries the response was YES. [2024-11-19 13:47:10,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8656 conditions, 4219 events. 1995/4219 cut-off events. For 1058/1102 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 27245 event pairs, 349 based on Foata normal form. 0/3904 useless extension candidates. Maximal degree in co-relation 8646. Up to 1995 conditions per place. [2024-11-19 13:47:10,530 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 99 selfloop transitions, 6 changer transitions 6/138 dead transitions. [2024-11-19 13:47:10,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 138 transitions, 620 flow [2024-11-19 13:47:10,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:10,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:10,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-11-19 13:47:10,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-11-19 13:47:10,532 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 220 flow. Second operand 4 states and 233 transitions. [2024-11-19 13:47:10,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 138 transitions, 620 flow [2024-11-19 13:47:10,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 138 transitions, 586 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 13:47:10,538 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 220 flow [2024-11-19 13:47:10,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-11-19 13:47:10,539 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 10 predicate places. [2024-11-19 13:47:10,540 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 220 flow [2024-11-19 13:47:10,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:10,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:10,540 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:10,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 13:47:10,540 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:10,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:10,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1765297320, now seen corresponding path program 1 times [2024-11-19 13:47:10,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:10,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265519474] [2024-11-19 13:47:10,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:10,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:10,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:10,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265519474] [2024-11-19 13:47:10,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265519474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:10,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:10,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:10,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750677765] [2024-11-19 13:47:10,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:10,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:10,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:10,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:10,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:10,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-19 13:47:10,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:10,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:10,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-19 13:47:10,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:11,217 INFO L124 PetriNetUnfolderBase]: 2829/5823 cut-off events. [2024-11-19 13:47:11,218 INFO L125 PetriNetUnfolderBase]: For 3581/3591 co-relation queries the response was YES. [2024-11-19 13:47:11,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12846 conditions, 5823 events. 2829/5823 cut-off events. For 3581/3591 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 39862 event pairs, 1541 based on Foata normal form. 144/5581 useless extension candidates. Maximal degree in co-relation 12835. Up to 3624 conditions per place. [2024-11-19 13:47:11,246 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 93 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2024-11-19 13:47:11,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 121 transitions, 578 flow [2024-11-19 13:47:11,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:11,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2024-11-19 13:47:11,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6395348837209303 [2024-11-19 13:47:11,248 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 220 flow. Second operand 4 states and 220 transitions. [2024-11-19 13:47:11,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 121 transitions, 578 flow [2024-11-19 13:47:11,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 121 transitions, 556 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:47:11,258 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 240 flow [2024-11-19 13:47:11,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2024-11-19 13:47:11,259 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2024-11-19 13:47:11,259 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 240 flow [2024-11-19 13:47:11,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:11,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:11,260 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:11,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 13:47:11,260 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:11,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:11,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1111343872, now seen corresponding path program 1 times [2024-11-19 13:47:11,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:11,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673045186] [2024-11-19 13:47:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:11,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:11,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:11,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673045186] [2024-11-19 13:47:11,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673045186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:11,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:11,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 13:47:11,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878161466] [2024-11-19 13:47:11,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:11,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 13:47:11,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:11,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 13:47:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:47:11,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 86 [2024-11-19 13:47:11,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 240 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:11,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:11,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 86 [2024-11-19 13:47:11,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:12,690 INFO L124 PetriNetUnfolderBase]: 2968/6043 cut-off events. [2024-11-19 13:47:12,690 INFO L125 PetriNetUnfolderBase]: For 2654/2720 co-relation queries the response was YES. [2024-11-19 13:47:12,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13780 conditions, 6043 events. 2968/6043 cut-off events. For 2654/2720 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 41279 event pairs, 480 based on Foata normal form. 0/5609 useless extension candidates. Maximal degree in co-relation 13766. Up to 2392 conditions per place. [2024-11-19 13:47:12,738 INFO L140 encePairwiseOnDemand]: 72/86 looper letters, 151 selfloop transitions, 14 changer transitions 2/192 dead transitions. [2024-11-19 13:47:12,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 192 transitions, 1000 flow [2024-11-19 13:47:12,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 13:47:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 13:47:12,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 445 transitions. [2024-11-19 13:47:12,796 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5174418604651163 [2024-11-19 13:47:12,796 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 240 flow. Second operand 10 states and 445 transitions. [2024-11-19 13:47:12,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 192 transitions, 1000 flow [2024-11-19 13:47:12,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 192 transitions, 997 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:12,805 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 310 flow [2024-11-19 13:47:12,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=310, PETRI_PLACES=101, PETRI_TRANSITIONS=85} [2024-11-19 13:47:12,808 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 23 predicate places. [2024-11-19 13:47:12,808 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 310 flow [2024-11-19 13:47:12,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:12,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:12,810 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:12,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 13:47:12,810 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:12,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:12,811 INFO L85 PathProgramCache]: Analyzing trace with hash 91922555, now seen corresponding path program 1 times [2024-11-19 13:47:12,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:12,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838019910] [2024-11-19 13:47:12,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:12,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:13,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:13,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838019910] [2024-11-19 13:47:13,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838019910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:13,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:13,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 13:47:13,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129257707] [2024-11-19 13:47:13,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:13,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 13:47:13,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:13,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 13:47:13,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:47:13,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-19 13:47:13,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 85 transitions, 310 flow. Second operand has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:13,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:13,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-19 13:47:13,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:13,994 INFO L124 PetriNetUnfolderBase]: 2853/5974 cut-off events. [2024-11-19 13:47:13,994 INFO L125 PetriNetUnfolderBase]: For 3458/3524 co-relation queries the response was YES. [2024-11-19 13:47:14,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14722 conditions, 5974 events. 2853/5974 cut-off events. For 3458/3524 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 41519 event pairs, 530 based on Foata normal form. 44/5852 useless extension candidates. Maximal degree in co-relation 14706. Up to 2881 conditions per place. [2024-11-19 13:47:14,027 INFO L140 encePairwiseOnDemand]: 72/86 looper letters, 134 selfloop transitions, 13 changer transitions 2/177 dead transitions. [2024-11-19 13:47:14,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 177 transitions, 975 flow [2024-11-19 13:47:14,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 13:47:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 13:47:14,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 414 transitions. [2024-11-19 13:47:14,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5348837209302325 [2024-11-19 13:47:14,030 INFO L175 Difference]: Start difference. First operand has 101 places, 85 transitions, 310 flow. Second operand 9 states and 414 transitions. [2024-11-19 13:47:14,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 177 transitions, 975 flow [2024-11-19 13:47:14,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 177 transitions, 965 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 13:47:14,043 INFO L231 Difference]: Finished difference. Result has 106 places, 88 transitions, 360 flow [2024-11-19 13:47:14,043 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=360, PETRI_PLACES=106, PETRI_TRANSITIONS=88} [2024-11-19 13:47:14,043 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 28 predicate places. [2024-11-19 13:47:14,044 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 360 flow [2024-11-19 13:47:14,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:14,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:14,044 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:14,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 13:47:14,044 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:14,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:14,045 INFO L85 PathProgramCache]: Analyzing trace with hash -945129074, now seen corresponding path program 1 times [2024-11-19 13:47:14,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:14,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712902794] [2024-11-19 13:47:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:14,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:14,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:14,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712902794] [2024-11-19 13:47:14,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712902794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:14,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665009627] [2024-11-19 13:47:14,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:14,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:14,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:14,130 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:14,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 13:47:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:14,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 13:47:14,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:14,300 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:14,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665009627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:14,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:14,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-19 13:47:14,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44982267] [2024-11-19 13:47:14,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:14,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:47:14,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:14,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:47:14,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 13:47:14,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 86 [2024-11-19 13:47:14,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 88 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:14,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:14,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 86 [2024-11-19 13:47:14,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:14,921 INFO L124 PetriNetUnfolderBase]: 3142/6194 cut-off events. [2024-11-19 13:47:14,922 INFO L125 PetriNetUnfolderBase]: For 4559/4593 co-relation queries the response was YES. [2024-11-19 13:47:14,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16186 conditions, 6194 events. 3142/6194 cut-off events. For 4559/4593 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 41142 event pairs, 692 based on Foata normal form. 150/6090 useless extension candidates. Maximal degree in co-relation 16167. Up to 3426 conditions per place. [2024-11-19 13:47:14,952 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 84 selfloop transitions, 5 changer transitions 0/114 dead transitions. [2024-11-19 13:47:14,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 114 transitions, 638 flow [2024-11-19 13:47:14,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:14,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-11-19 13:47:14,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5668604651162791 [2024-11-19 13:47:14,953 INFO L175 Difference]: Start difference. First operand has 106 places, 88 transitions, 360 flow. Second operand 4 states and 195 transitions. [2024-11-19 13:47:14,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 114 transitions, 638 flow [2024-11-19 13:47:14,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 114 transitions, 618 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-19 13:47:14,968 INFO L231 Difference]: Finished difference. Result has 100 places, 86 transitions, 342 flow [2024-11-19 13:47:14,968 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=100, PETRI_TRANSITIONS=86} [2024-11-19 13:47:14,968 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2024-11-19 13:47:14,968 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 86 transitions, 342 flow [2024-11-19 13:47:14,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:14,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:14,969 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:14,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 13:47:15,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 13:47:15,170 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:15,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:15,170 INFO L85 PathProgramCache]: Analyzing trace with hash 765770664, now seen corresponding path program 1 times [2024-11-19 13:47:15,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:15,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062760441] [2024-11-19 13:47:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:15,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:15,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:47:15,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:15,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062760441] [2024-11-19 13:47:15,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062760441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:15,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:15,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:15,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42107573] [2024-11-19 13:47:15,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:15,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:15,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:15,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:15,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:15,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 86 [2024-11-19 13:47:15,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 86 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:15,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:15,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 86 [2024-11-19 13:47:15,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:15,904 INFO L124 PetriNetUnfolderBase]: 2784/5702 cut-off events. [2024-11-19 13:47:15,904 INFO L125 PetriNetUnfolderBase]: For 4398/4418 co-relation queries the response was YES. [2024-11-19 13:47:15,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14799 conditions, 5702 events. 2784/5702 cut-off events. For 4398/4418 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 38279 event pairs, 748 based on Foata normal form. 150/5708 useless extension candidates. Maximal degree in co-relation 14780. Up to 2901 conditions per place. [2024-11-19 13:47:15,936 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 88 selfloop transitions, 6 changer transitions 0/119 dead transitions. [2024-11-19 13:47:15,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 119 transitions, 652 flow [2024-11-19 13:47:15,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:15,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:15,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-19 13:47:15,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-11-19 13:47:15,938 INFO L175 Difference]: Start difference. First operand has 100 places, 86 transitions, 342 flow. Second operand 4 states and 200 transitions. [2024-11-19 13:47:15,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 119 transitions, 652 flow [2024-11-19 13:47:15,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 119 transitions, 642 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:15,951 INFO L231 Difference]: Finished difference. Result has 99 places, 85 transitions, 344 flow [2024-11-19 13:47:15,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=99, PETRI_TRANSITIONS=85} [2024-11-19 13:47:15,951 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2024-11-19 13:47:15,951 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 85 transitions, 344 flow [2024-11-19 13:47:15,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:15,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:15,952 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:15,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 13:47:15,952 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:15,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:15,953 INFO L85 PathProgramCache]: Analyzing trace with hash 915903152, now seen corresponding path program 1 times [2024-11-19 13:47:15,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:15,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522992249] [2024-11-19 13:47:15,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:15,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:16,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:16,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522992249] [2024-11-19 13:47:16,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522992249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:16,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:16,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:16,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664656293] [2024-11-19 13:47:16,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:16,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:47:16,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:16,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:47:16,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:47:16,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-11-19 13:47:16,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:16,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:16,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-11-19 13:47:16,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:16,483 INFO L124 PetriNetUnfolderBase]: 1726/3932 cut-off events. [2024-11-19 13:47:16,483 INFO L125 PetriNetUnfolderBase]: For 4074/4074 co-relation queries the response was YES. [2024-11-19 13:47:16,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10482 conditions, 3932 events. 1726/3932 cut-off events. For 4074/4074 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 25710 event pairs, 514 based on Foata normal form. 166/4020 useless extension candidates. Maximal degree in co-relation 10463. Up to 1934 conditions per place. [2024-11-19 13:47:16,511 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 64 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2024-11-19 13:47:16,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 97 transitions, 532 flow [2024-11-19 13:47:16,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:47:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:47:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-11-19 13:47:16,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-11-19 13:47:16,513 INFO L175 Difference]: Start difference. First operand has 99 places, 85 transitions, 344 flow. Second operand 3 states and 166 transitions. [2024-11-19 13:47:16,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 97 transitions, 532 flow [2024-11-19 13:47:16,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 97 transitions, 506 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:16,524 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 301 flow [2024-11-19 13:47:16,524 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=301, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2024-11-19 13:47:16,525 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-19 13:47:16,525 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 301 flow [2024-11-19 13:47:16,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:16,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:16,526 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:16,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 13:47:16,526 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:16,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:16,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1403479541, now seen corresponding path program 1 times [2024-11-19 13:47:16,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:16,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730648921] [2024-11-19 13:47:16,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:16,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:16,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:16,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730648921] [2024-11-19 13:47:16,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730648921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:16,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:16,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 13:47:16,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763591164] [2024-11-19 13:47:16,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:16,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 13:47:16,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:16,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 13:47:17,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:47:17,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-19 13:47:17,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 301 flow. Second operand has 8 states, 8 states have (on average 35.25) internal successors, (282), 8 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:17,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:17,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-19 13:47:17,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:17,521 INFO L124 PetriNetUnfolderBase]: 1760/3873 cut-off events. [2024-11-19 13:47:17,521 INFO L125 PetriNetUnfolderBase]: For 3494/3496 co-relation queries the response was YES. [2024-11-19 13:47:17,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10398 conditions, 3873 events. 1760/3873 cut-off events. For 3494/3496 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 24368 event pairs, 300 based on Foata normal form. 36/3817 useless extension candidates. Maximal degree in co-relation 10378. Up to 1708 conditions per place. [2024-11-19 13:47:17,538 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 116 selfloop transitions, 11 changer transitions 2/154 dead transitions. [2024-11-19 13:47:17,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 154 transitions, 888 flow [2024-11-19 13:47:17,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 13:47:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 13:47:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 397 transitions. [2024-11-19 13:47:17,540 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5129198966408268 [2024-11-19 13:47:17,540 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 301 flow. Second operand 9 states and 397 transitions. [2024-11-19 13:47:17,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 154 transitions, 888 flow [2024-11-19 13:47:17,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 154 transitions, 876 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:17,549 INFO L231 Difference]: Finished difference. Result has 105 places, 79 transitions, 313 flow [2024-11-19 13:47:17,549 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=313, PETRI_PLACES=105, PETRI_TRANSITIONS=79} [2024-11-19 13:47:17,549 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 27 predicate places. [2024-11-19 13:47:17,549 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 79 transitions, 313 flow [2024-11-19 13:47:17,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.25) internal successors, (282), 8 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:17,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:17,550 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:17,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 13:47:17,550 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:17,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:17,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1224215603, now seen corresponding path program 1 times [2024-11-19 13:47:17,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:17,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215966708] [2024-11-19 13:47:17,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:17,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:18,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:18,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:18,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215966708] [2024-11-19 13:47:18,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215966708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:18,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:18,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 13:47:18,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52375917] [2024-11-19 13:47:18,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:18,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 13:47:18,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:18,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 13:47:18,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-19 13:47:18,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2024-11-19 13:47:18,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 79 transitions, 313 flow. Second operand has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:18,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:18,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2024-11-19 13:47:18,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:19,674 INFO L124 PetriNetUnfolderBase]: 2182/4649 cut-off events. [2024-11-19 13:47:19,675 INFO L125 PetriNetUnfolderBase]: For 4516/4516 co-relation queries the response was YES. [2024-11-19 13:47:19,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12555 conditions, 4649 events. 2182/4649 cut-off events. For 4516/4516 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 29404 event pairs, 229 based on Foata normal form. 26/4561 useless extension candidates. Maximal degree in co-relation 12534. Up to 1680 conditions per place. [2024-11-19 13:47:19,693 INFO L140 encePairwiseOnDemand]: 73/86 looper letters, 164 selfloop transitions, 13 changer transitions 2/200 dead transitions. [2024-11-19 13:47:19,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 200 transitions, 1192 flow [2024-11-19 13:47:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 13:47:19,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 13:47:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 488 transitions. [2024-11-19 13:47:19,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4364937388193202 [2024-11-19 13:47:19,696 INFO L175 Difference]: Start difference. First operand has 105 places, 79 transitions, 313 flow. Second operand 13 states and 488 transitions. [2024-11-19 13:47:19,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 200 transitions, 1192 flow [2024-11-19 13:47:19,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 200 transitions, 1176 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 13:47:19,706 INFO L231 Difference]: Finished difference. Result has 115 places, 84 transitions, 365 flow [2024-11-19 13:47:19,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=365, PETRI_PLACES=115, PETRI_TRANSITIONS=84} [2024-11-19 13:47:19,707 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 37 predicate places. [2024-11-19 13:47:19,707 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 84 transitions, 365 flow [2024-11-19 13:47:19,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:19,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:19,708 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:19,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 13:47:19,708 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:19,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1465375294, now seen corresponding path program 1 times [2024-11-19 13:47:19,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:19,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048216465] [2024-11-19 13:47:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:19,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:19,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:19,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048216465] [2024-11-19 13:47:19,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048216465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:19,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:19,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:19,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058686701] [2024-11-19 13:47:19,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:19,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:47:19,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:19,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:47:19,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:47:19,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-11-19 13:47:19,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 84 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:19,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:19,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-11-19 13:47:19,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:20,123 INFO L124 PetriNetUnfolderBase]: 1680/3808 cut-off events. [2024-11-19 13:47:20,123 INFO L125 PetriNetUnfolderBase]: For 4493/4500 co-relation queries the response was YES. [2024-11-19 13:47:20,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10332 conditions, 3808 events. 1680/3808 cut-off events. For 4493/4500 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 23501 event pairs, 1011 based on Foata normal form. 30/3752 useless extension candidates. Maximal degree in co-relation 10308. Up to 1855 conditions per place. [2024-11-19 13:47:20,149 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 71 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-11-19 13:47:20,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 101 transitions, 580 flow [2024-11-19 13:47:20,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:47:20,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:47:20,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-11-19 13:47:20,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-11-19 13:47:20,151 INFO L175 Difference]: Start difference. First operand has 115 places, 84 transitions, 365 flow. Second operand 3 states and 166 transitions. [2024-11-19 13:47:20,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 101 transitions, 580 flow [2024-11-19 13:47:20,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 101 transitions, 561 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-19 13:47:20,164 INFO L231 Difference]: Finished difference. Result has 110 places, 82 transitions, 342 flow [2024-11-19 13:47:20,165 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=110, PETRI_TRANSITIONS=82} [2024-11-19 13:47:20,165 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 32 predicate places. [2024-11-19 13:47:20,165 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 82 transitions, 342 flow [2024-11-19 13:47:20,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:20,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:20,166 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:20,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 13:47:20,166 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:20,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:20,167 INFO L85 PathProgramCache]: Analyzing trace with hash 748720363, now seen corresponding path program 1 times [2024-11-19 13:47:20,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:20,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825136443] [2024-11-19 13:47:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:20,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:21,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:21,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825136443] [2024-11-19 13:47:21,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825136443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:21,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:21,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 13:47:21,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502973793] [2024-11-19 13:47:21,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:21,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 13:47:21,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:21,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 13:47:21,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 13:47:21,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2024-11-19 13:47:21,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 82 transitions, 342 flow. Second operand has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:21,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:21,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2024-11-19 13:47:21,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:22,103 INFO L124 PetriNetUnfolderBase]: 2033/4378 cut-off events. [2024-11-19 13:47:22,103 INFO L125 PetriNetUnfolderBase]: For 4547/4547 co-relation queries the response was YES. [2024-11-19 13:47:22,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11893 conditions, 4378 events. 2033/4378 cut-off events. For 4547/4547 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 26864 event pairs, 285 based on Foata normal form. 26/4310 useless extension candidates. Maximal degree in co-relation 11867. Up to 1061 conditions per place. [2024-11-19 13:47:22,126 INFO L140 encePairwiseOnDemand]: 72/86 looper letters, 154 selfloop transitions, 14 changer transitions 10/199 dead transitions. [2024-11-19 13:47:22,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 199 transitions, 1206 flow [2024-11-19 13:47:22,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 13:47:22,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 13:47:22,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 488 transitions. [2024-11-19 13:47:22,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4364937388193202 [2024-11-19 13:47:22,128 INFO L175 Difference]: Start difference. First operand has 110 places, 82 transitions, 342 flow. Second operand 13 states and 488 transitions. [2024-11-19 13:47:22,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 199 transitions, 1206 flow [2024-11-19 13:47:22,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 199 transitions, 1195 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:22,144 INFO L231 Difference]: Finished difference. Result has 120 places, 83 transitions, 378 flow [2024-11-19 13:47:22,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=378, PETRI_PLACES=120, PETRI_TRANSITIONS=83} [2024-11-19 13:47:22,145 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 42 predicate places. [2024-11-19 13:47:22,145 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 83 transitions, 378 flow [2024-11-19 13:47:22,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:22,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:22,146 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:22,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 13:47:22,146 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:22,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:22,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2040620382, now seen corresponding path program 1 times [2024-11-19 13:47:22,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:22,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805008234] [2024-11-19 13:47:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:22,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:23,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805008234] [2024-11-19 13:47:23,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805008234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:23,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:23,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 13:47:23,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108575338] [2024-11-19 13:47:23,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:23,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 13:47:23,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:23,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 13:47:23,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 13:47:23,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 86 [2024-11-19 13:47:23,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 83 transitions, 378 flow. Second operand has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:23,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:23,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 86 [2024-11-19 13:47:23,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:23,816 INFO L124 PetriNetUnfolderBase]: 2012/4292 cut-off events. [2024-11-19 13:47:23,817 INFO L125 PetriNetUnfolderBase]: For 5135/5142 co-relation queries the response was YES. [2024-11-19 13:47:23,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11999 conditions, 4292 events. 2012/4292 cut-off events. For 5135/5142 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 25908 event pairs, 280 based on Foata normal form. 52/4287 useless extension candidates. Maximal degree in co-relation 11972. Up to 1301 conditions per place. [2024-11-19 13:47:23,839 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 138 selfloop transitions, 13 changer transitions 16/190 dead transitions. [2024-11-19 13:47:23,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 190 transitions, 1173 flow [2024-11-19 13:47:23,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 13:47:23,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 13:47:23,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 499 transitions. [2024-11-19 13:47:23,841 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48352713178294576 [2024-11-19 13:47:23,841 INFO L175 Difference]: Start difference. First operand has 120 places, 83 transitions, 378 flow. Second operand 12 states and 499 transitions. [2024-11-19 13:47:23,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 190 transitions, 1173 flow [2024-11-19 13:47:23,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 190 transitions, 1153 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-11-19 13:47:23,858 INFO L231 Difference]: Finished difference. Result has 125 places, 86 transitions, 409 flow [2024-11-19 13:47:23,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=409, PETRI_PLACES=125, PETRI_TRANSITIONS=86} [2024-11-19 13:47:23,858 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 47 predicate places. [2024-11-19 13:47:23,859 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 86 transitions, 409 flow [2024-11-19 13:47:23,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:23,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:23,859 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:23,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 13:47:23,860 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:23,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:23,860 INFO L85 PathProgramCache]: Analyzing trace with hash 138726922, now seen corresponding path program 1 times [2024-11-19 13:47:23,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:23,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319812825] [2024-11-19 13:47:23,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:23,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:24,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:24,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319812825] [2024-11-19 13:47:24,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319812825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:24,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452581191] [2024-11-19 13:47:24,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:24,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:24,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:24,976 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:24,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 13:47:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:25,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 13:47:25,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:25,299 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 19 treesize of output 1 [2024-11-19 13:47:25,336 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 31 treesize of output 15 [2024-11-19 13:47:25,396 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 34 treesize of output 28 [2024-11-19 13:47:25,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 13:47:25,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22 [2024-11-19 13:47:25,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:25,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:47:25,679 INFO L349 Elim1Store]: treesize reduction 49, result has 52.4 percent of original size [2024-11-19 13:47:25,679 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 204 treesize of output 191 [2024-11-19 13:47:25,697 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 13:47:25,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 148 [2024-11-19 13:47:25,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-11-19 13:47:25,789 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 13:47:25,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 185 treesize of output 183 [2024-11-19 13:47:26,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:26,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452581191] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:26,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 13:47:26,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 6] total 22 [2024-11-19 13:47:26,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792109214] [2024-11-19 13:47:26,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:26,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 13:47:26,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:26,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 13:47:26,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-19 13:47:26,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-11-19 13:47:26,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 86 transitions, 409 flow. Second operand has 7 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:26,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:26,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-11-19 13:47:26,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:26,922 INFO L124 PetriNetUnfolderBase]: 2078/4353 cut-off events. [2024-11-19 13:47:26,922 INFO L125 PetriNetUnfolderBase]: For 5360/5360 co-relation queries the response was YES. [2024-11-19 13:47:26,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12564 conditions, 4353 events. 2078/4353 cut-off events. For 5360/5360 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 26200 event pairs, 274 based on Foata normal form. 12/4338 useless extension candidates. Maximal degree in co-relation 12533. Up to 2021 conditions per place. [2024-11-19 13:47:26,945 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 105 selfloop transitions, 15 changer transitions 3/144 dead transitions. [2024-11-19 13:47:26,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 144 transitions, 905 flow [2024-11-19 13:47:26,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 13:47:26,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 13:47:26,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 319 transitions. [2024-11-19 13:47:26,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4636627906976744 [2024-11-19 13:47:26,947 INFO L175 Difference]: Start difference. First operand has 125 places, 86 transitions, 409 flow. Second operand 8 states and 319 transitions. [2024-11-19 13:47:26,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 144 transitions, 905 flow [2024-11-19 13:47:26,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 144 transitions, 884 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-19 13:47:26,961 INFO L231 Difference]: Finished difference. Result has 122 places, 86 transitions, 423 flow [2024-11-19 13:47:26,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=423, PETRI_PLACES=122, PETRI_TRANSITIONS=86} [2024-11-19 13:47:26,961 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2024-11-19 13:47:26,962 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 86 transitions, 423 flow [2024-11-19 13:47:26,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:26,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:26,962 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:26,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 13:47:27,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:27,163 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:27,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:27,164 INFO L85 PathProgramCache]: Analyzing trace with hash -124522770, now seen corresponding path program 1 times [2024-11-19 13:47:27,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:27,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155276528] [2024-11-19 13:47:27,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:27,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:28,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:28,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:28,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155276528] [2024-11-19 13:47:28,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155276528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:28,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041630528] [2024-11-19 13:47:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:28,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:28,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:28,452 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:28,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 13:47:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:28,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-19 13:47:28,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:28,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2024-11-19 13:47:28,752 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-19 13:47:28,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-19 13:47:28,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-19 13:47:28,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2024-11-19 13:47:28,991 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-19 13:47:28,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-19 13:47:29,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-19 13:47:29,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2024-11-19 13:47:29,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 43 [2024-11-19 13:47:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:29,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:47:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:31,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041630528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:47:31,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:47:31,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 33 [2024-11-19 13:47:31,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186790721] [2024-11-19 13:47:31,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:47:31,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-19 13:47:31,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:31,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-19 13:47:31,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=879, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 13:47:31,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 86 [2024-11-19 13:47:31,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 86 transitions, 423 flow. Second operand has 34 states, 34 states have (on average 30.029411764705884) internal successors, (1021), 34 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:31,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:31,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 86 [2024-11-19 13:47:31,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:35,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 13:47:41,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 13:47:42,204 INFO L124 PetriNetUnfolderBase]: 2230/4791 cut-off events. [2024-11-19 13:47:42,205 INFO L125 PetriNetUnfolderBase]: For 6040/6041 co-relation queries the response was YES. [2024-11-19 13:47:42,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13657 conditions, 4791 events. 2230/4791 cut-off events. For 6040/6041 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 28257 event pairs, 334 based on Foata normal form. 46/4783 useless extension candidates. Maximal degree in co-relation 13627. Up to 714 conditions per place. [2024-11-19 13:47:42,234 INFO L140 encePairwiseOnDemand]: 66/86 looper letters, 242 selfloop transitions, 34 changer transitions 27/326 dead transitions. [2024-11-19 13:47:42,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 326 transitions, 2085 flow [2024-11-19 13:47:42,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-19 13:47:42,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-19 13:47:42,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1042 transitions. [2024-11-19 13:47:42,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41780272654370487 [2024-11-19 13:47:42,237 INFO L175 Difference]: Start difference. First operand has 122 places, 86 transitions, 423 flow. Second operand 29 states and 1042 transitions. [2024-11-19 13:47:42,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 326 transitions, 2085 flow [2024-11-19 13:47:42,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 326 transitions, 2023 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-11-19 13:47:42,259 INFO L231 Difference]: Finished difference. Result has 151 places, 101 transitions, 574 flow [2024-11-19 13:47:42,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=574, PETRI_PLACES=151, PETRI_TRANSITIONS=101} [2024-11-19 13:47:42,260 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 73 predicate places. [2024-11-19 13:47:42,260 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 101 transitions, 574 flow [2024-11-19 13:47:42,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 30.029411764705884) internal successors, (1021), 34 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:42,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:42,261 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:42,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 13:47:42,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:42,466 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:42,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:42,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1061141481, now seen corresponding path program 1 times [2024-11-19 13:47:42,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:42,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876581406] [2024-11-19 13:47:42,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:42,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:43,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:43,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:43,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876581406] [2024-11-19 13:47:43,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876581406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:43,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068851953] [2024-11-19 13:47:43,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:43,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:43,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:43,558 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:43,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 13:47:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:43,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-19 13:47:43,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:43,914 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 43 treesize of output 21 [2024-11-19 13:47:44,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 13:47:44,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2024-11-19 13:47:44,048 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 41 treesize of output 19 [2024-11-19 13:47:44,083 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-19 13:47:44,083 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2024-11-19 13:47:44,112 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 41 treesize of output 19 [2024-11-19 13:47:44,121 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 31 treesize of output 13 [2024-11-19 13:47:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:44,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:47:44,580 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2024-11-19 13:47:44,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 123 treesize of output 85 [2024-11-19 13:47:44,590 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 13:47:44,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 82 [2024-11-19 13:47:44,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 13:47:44,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 13:47:44,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2024-11-19 13:47:44,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:44,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068851953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:47:44,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:47:44,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 30 [2024-11-19 13:47:44,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993840699] [2024-11-19 13:47:44,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:47:44,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 13:47:44,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:44,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 13:47:44,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2024-11-19 13:47:44,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 86 [2024-11-19 13:47:44,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 101 transitions, 574 flow. Second operand has 31 states, 31 states have (on average 33.96774193548387) internal successors, (1053), 31 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:44,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:44,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 86 [2024-11-19 13:47:44,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:46,432 INFO L124 PetriNetUnfolderBase]: 2178/4664 cut-off events. [2024-11-19 13:47:46,432 INFO L125 PetriNetUnfolderBase]: For 5994/5998 co-relation queries the response was YES. [2024-11-19 13:47:46,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13674 conditions, 4664 events. 2178/4664 cut-off events. For 5994/5998 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 26340 event pairs, 343 based on Foata normal form. 44/4669 useless extension candidates. Maximal degree in co-relation 13637. Up to 881 conditions per place. [2024-11-19 13:47:46,460 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 183 selfloop transitions, 35 changer transitions 17/257 dead transitions. [2024-11-19 13:47:46,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 257 transitions, 1744 flow [2024-11-19 13:47:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 13:47:46,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-19 13:47:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 885 transitions. [2024-11-19 13:47:46,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44742163801820023 [2024-11-19 13:47:46,462 INFO L175 Difference]: Start difference. First operand has 151 places, 101 transitions, 574 flow. Second operand 23 states and 885 transitions. [2024-11-19 13:47:46,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 257 transitions, 1744 flow [2024-11-19 13:47:46,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 257 transitions, 1699 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-11-19 13:47:46,478 INFO L231 Difference]: Finished difference. Result has 158 places, 100 transitions, 593 flow [2024-11-19 13:47:46,479 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=593, PETRI_PLACES=158, PETRI_TRANSITIONS=100} [2024-11-19 13:47:46,479 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 80 predicate places. [2024-11-19 13:47:46,479 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 100 transitions, 593 flow [2024-11-19 13:47:46,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 33.96774193548387) internal successors, (1053), 31 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:46,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:46,480 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:46,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 13:47:46,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-19 13:47:46,681 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:47:46,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:46,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1452980621, now seen corresponding path program 1 times [2024-11-19 13:47:46,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:46,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132921433] [2024-11-19 13:47:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:46,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:48,166 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:48,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:48,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132921433] [2024-11-19 13:47:48,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132921433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:48,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693442830] [2024-11-19 13:47:48,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:48,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:48,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:48,168 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:48,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 13:47:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:48,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-19 13:47:48,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:48,437 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 19 treesize of output 1 [2024-11-19 13:47:48,474 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 31 treesize of output 15 [2024-11-19 13:47:48,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 13:47:48,540 INFO L349 Elim1Store]: treesize reduction 48, result has 39.2 percent of original size [2024-11-19 13:47:48,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 71 [2024-11-19 13:47:48,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 13:47:48,730 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 13:47:48,748 INFO L349 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2024-11-19 13:47:48,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 92 treesize of output 74 [2024-11-19 13:47:48,879 INFO L349 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2024-11-19 13:47:48,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 75 treesize of output 63 [2024-11-19 13:47:48,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-19 13:47:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:48,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:47:56,961 INFO L349 Elim1Store]: treesize reduction 49, result has 52.4 percent of original size [2024-11-19 13:47:56,961 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 204 treesize of output 191 [2024-11-19 13:47:56,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 13:47:56,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 148 [2024-11-19 13:47:56,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-11-19 13:47:57,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 13:47:57,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 190 treesize of output 188 [2024-11-19 13:47:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:57,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693442830] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:47:57,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:47:57,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 30 [2024-11-19 13:47:57,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67533382] [2024-11-19 13:47:57,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:47:57,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 13:47:57,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:57,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 13:47:57,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=792, Unknown=1, NotChecked=0, Total=930 [2024-11-19 13:47:57,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-19 13:47:57,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 100 transitions, 593 flow. Second operand has 31 states, 31 states have (on average 29.419354838709676) internal successors, (912), 31 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:57,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:57,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-19 13:47:57,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:59,882 INFO L124 PetriNetUnfolderBase]: 2182/4658 cut-off events. [2024-11-19 13:47:59,883 INFO L125 PetriNetUnfolderBase]: For 6359/6359 co-relation queries the response was YES. [2024-11-19 13:47:59,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13618 conditions, 4658 events. 2182/4658 cut-off events. For 6359/6359 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 26043 event pairs, 151 based on Foata normal form. 18/4645 useless extension candidates. Maximal degree in co-relation 13582. Up to 702 conditions per place. [2024-11-19 13:47:59,909 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 211 selfloop transitions, 35 changer transitions 22/289 dead transitions. [2024-11-19 13:47:59,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 289 transitions, 1961 flow [2024-11-19 13:47:59,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 13:47:59,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 13:47:59,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 841 transitions. [2024-11-19 13:47:59,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3911627906976744 [2024-11-19 13:47:59,912 INFO L175 Difference]: Start difference. First operand has 158 places, 100 transitions, 593 flow. Second operand 25 states and 841 transitions. [2024-11-19 13:47:59,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 289 transitions, 1961 flow [2024-11-19 13:47:59,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 289 transitions, 1860 flow, removed 11 selfloop flow, removed 25 redundant places. [2024-11-19 13:47:59,930 INFO L231 Difference]: Finished difference. Result has 155 places, 99 transitions, 556 flow [2024-11-19 13:47:59,930 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=556, PETRI_PLACES=155, PETRI_TRANSITIONS=99} [2024-11-19 13:47:59,930 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 77 predicate places. [2024-11-19 13:47:59,930 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 99 transitions, 556 flow [2024-11-19 13:47:59,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 29.419354838709676) internal successors, (912), 31 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:59,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:59,931 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:59,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 13:48:00,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:00,132 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:48:00,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:00,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1360939829, now seen corresponding path program 1 times [2024-11-19 13:48:00,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:00,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494700336] [2024-11-19 13:48:00,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:00,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 13:48:00,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:00,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494700336] [2024-11-19 13:48:00,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494700336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:00,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:00,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 13:48:00,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136190769] [2024-11-19 13:48:00,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:00,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:48:00,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:00,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:48:00,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 13:48:00,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 86 [2024-11-19 13:48:00,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 99 transitions, 556 flow. Second operand has 6 states, 6 states have (on average 41.666666666666664) internal successors, (250), 6 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:00,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:00,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 86 [2024-11-19 13:48:00,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:01,200 INFO L124 PetriNetUnfolderBase]: 2084/4552 cut-off events. [2024-11-19 13:48:01,200 INFO L125 PetriNetUnfolderBase]: For 5799/5799 co-relation queries the response was YES. [2024-11-19 13:48:01,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12845 conditions, 4552 events. 2084/4552 cut-off events. For 5799/5799 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 26237 event pairs, 1359 based on Foata normal form. 18/4521 useless extension candidates. Maximal degree in co-relation 12817. Up to 2688 conditions per place. [2024-11-19 13:48:01,220 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 72 selfloop transitions, 18 changer transitions 0/114 dead transitions. [2024-11-19 13:48:01,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 114 transitions, 805 flow [2024-11-19 13:48:01,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:48:01,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:48:01,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2024-11-19 13:48:01,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5232558139534884 [2024-11-19 13:48:01,222 INFO L175 Difference]: Start difference. First operand has 155 places, 99 transitions, 556 flow. Second operand 5 states and 225 transitions. [2024-11-19 13:48:01,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 114 transitions, 805 flow [2024-11-19 13:48:01,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 114 transitions, 710 flow, removed 2 selfloop flow, removed 25 redundant places. [2024-11-19 13:48:01,233 INFO L231 Difference]: Finished difference. Result has 131 places, 98 transitions, 491 flow [2024-11-19 13:48:01,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=491, PETRI_PLACES=131, PETRI_TRANSITIONS=98} [2024-11-19 13:48:01,234 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 53 predicate places. [2024-11-19 13:48:01,234 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 98 transitions, 491 flow [2024-11-19 13:48:01,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.666666666666664) internal successors, (250), 6 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:01,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:01,234 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:01,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 13:48:01,234 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:48:01,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:01,235 INFO L85 PathProgramCache]: Analyzing trace with hash 672806172, now seen corresponding path program 1 times [2024-11-19 13:48:01,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:01,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709694343] [2024-11-19 13:48:01,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:01,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:01,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:01,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709694343] [2024-11-19 13:48:01,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709694343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:01,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522175299] [2024-11-19 13:48:01,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:01,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:01,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:01,990 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:01,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 13:48:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:02,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-19 13:48:02,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:02,310 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 19 treesize of output 1 [2024-11-19 13:48:02,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 13:48:02,420 INFO L349 Elim1Store]: treesize reduction 48, result has 39.2 percent of original size [2024-11-19 13:48:02,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 58 [2024-11-19 13:48:02,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 13:48:02,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 13:48:02,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 34 [2024-11-19 13:48:02,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 13:48:02,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 30 [2024-11-19 13:48:02,838 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 13:48:02,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-19 13:48:02,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 13:48:02,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 13 [2024-11-19 13:48:02,880 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:02,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:03,522 INFO L349 Elim1Store]: treesize reduction 36, result has 59.6 percent of original size [2024-11-19 13:48:03,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 113 treesize of output 133 [2024-11-19 13:48:03,537 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 13:48:03,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 125 [2024-11-19 13:48:03,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-11-19 13:48:03,684 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 13:48:03,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 211 treesize of output 153 [2024-11-19 13:48:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:03,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522175299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:03,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:03,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 26 [2024-11-19 13:48:03,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115285289] [2024-11-19 13:48:03,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:03,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 13:48:03,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:03,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 13:48:03,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2024-11-19 13:48:03,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 86 [2024-11-19 13:48:03,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 98 transitions, 491 flow. Second operand has 27 states, 27 states have (on average 32.851851851851855) internal successors, (887), 27 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:03,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:03,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 86 [2024-11-19 13:48:03,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:04,993 INFO L124 PetriNetUnfolderBase]: 2197/4702 cut-off events. [2024-11-19 13:48:04,993 INFO L125 PetriNetUnfolderBase]: For 4975/4975 co-relation queries the response was YES. [2024-11-19 13:48:05,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12919 conditions, 4702 events. 2197/4702 cut-off events. For 4975/4975 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 26619 event pairs, 1175 based on Foata normal form. 9/4672 useless extension candidates. Maximal degree in co-relation 12895. Up to 2357 conditions per place. [2024-11-19 13:48:05,018 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 84 selfloop transitions, 37 changer transitions 0/138 dead transitions. [2024-11-19 13:48:05,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 138 transitions, 923 flow [2024-11-19 13:48:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 13:48:05,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 13:48:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 296 transitions. [2024-11-19 13:48:05,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-11-19 13:48:05,020 INFO L175 Difference]: Start difference. First operand has 131 places, 98 transitions, 491 flow. Second operand 8 states and 296 transitions. [2024-11-19 13:48:05,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 138 transitions, 923 flow [2024-11-19 13:48:05,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 138 transitions, 887 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 13:48:05,029 INFO L231 Difference]: Finished difference. Result has 133 places, 97 transitions, 525 flow [2024-11-19 13:48:05,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=525, PETRI_PLACES=133, PETRI_TRANSITIONS=97} [2024-11-19 13:48:05,030 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 55 predicate places. [2024-11-19 13:48:05,030 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 97 transitions, 525 flow [2024-11-19 13:48:05,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 32.851851851851855) internal successors, (887), 27 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:05,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:05,031 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:05,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 13:48:05,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:05,231 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-19 13:48:05,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:05,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1438112693, now seen corresponding path program 1 times [2024-11-19 13:48:05,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:05,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137185072] [2024-11-19 13:48:05,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:05,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:07,252 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:07,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:07,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137185072] [2024-11-19 13:48:07,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137185072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:07,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885440534] [2024-11-19 13:48:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:07,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:07,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:07,255 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:07,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 13:48:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:07,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-19 13:48:07,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:07,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2024-11-19 13:48:07,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-19 13:48:07,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-19 13:48:07,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-19 13:48:07,941 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-19 13:48:07,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-19 13:48:07,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-19 13:48:08,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-19 13:48:08,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 13:48:08,300 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 23 treesize of output 3 [2024-11-19 13:48:08,466 INFO L349 Elim1Store]: treesize reduction 36, result has 39.0 percent of original size [2024-11-19 13:48:08,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 44 [2024-11-19 13:48:08,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 22 [2024-11-19 13:48:08,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2024-11-19 13:48:08,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 22 [2024-11-19 13:48:08,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 13:48:08,853 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:08,853 INFO L311 TraceCheckSpWp]: Computing backward predicates...