./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-11 23:45:50,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:45:51,007 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:45:51,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:45:51,016 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:45:51,041 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:45:51,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:45:51,042 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:45:51,043 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:45:51,047 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:45:51,047 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:45:51,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:45:51,048 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:45:51,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:45:51,048 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:45:51,049 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:45:51,049 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:45:51,049 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:45:51,049 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:45:51,049 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:45:51,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:45:51,051 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:45:51,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:45:51,053 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:45:51,053 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:45:51,053 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:45:51,054 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:45:51,054 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:45:51,054 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:45:51,054 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:45:51,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:45:51,055 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:45:51,055 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:45:51,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:45:51,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:45:51,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:45:51,057 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:45:51,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:45:51,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:45:51,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:45:51,058 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:45:51,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:45:51,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:45:51,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:45:51,059 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2024-10-11 23:45:51,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:45:51,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:45:51,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:45:51,344 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:45:51,344 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:45:51,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2024-10-11 23:45:52,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:45:53,125 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:45:53,126 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2024-10-11 23:45:53,146 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/59d6a16ab/c160fc826e5b4df3b3b7bac97763fb7e/FLAG6525a5234 [2024-10-11 23:45:53,161 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/59d6a16ab/c160fc826e5b4df3b3b7bac97763fb7e [2024-10-11 23:45:53,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:45:53,165 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:45:53,169 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:45:53,169 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:45:53,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:45:53,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:45:53" (1/1) ... [2024-10-11 23:45:53,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34951b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:45:53, skipping insertion in model container [2024-10-11 23:45:53,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:45:53" (1/1) ... [2024-10-11 23:45:53,230 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:45:53,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:45:53,714 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:45:53,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:45:53,895 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:45:53,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:45:53 WrapperNode [2024-10-11 23:45:53,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:45:53,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:45:53,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:45:53,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:45:53,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:45:53" (1/1) ... [2024-10-11 23:45:53,928 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:45:53" (1/1) ... [2024-10-11 23:45:53,965 INFO L138 Inliner]: procedures = 274, calls = 64, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 272 [2024-10-11 23:45:53,968 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:45:53,973 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:45:53,973 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:45:53,973 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:45:53,984 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:45:53" (1/1) ... [2024-10-11 23:45:53,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:45:53" (1/1) ... [2024-10-11 23:45:53,988 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:45:53" (1/1) ... [2024-10-11 23:45:54,008 INFO L175 MemorySlicer]: Split 51 memory accesses to 5 slices as follows [2, 8, 5, 4, 32]. 63 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 8, 5, 0, 0]. The 18 writes are split as follows [0, 0, 0, 3, 15]. [2024-10-11 23:45:54,008 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:45:53" (1/1) ... [2024-10-11 23:45:54,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:45:53" (1/1) ... [2024-10-11 23:45:54,020 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:45:53" (1/1) ... [2024-10-11 23:45:54,028 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:45:53" (1/1) ... [2024-10-11 23:45:54,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:45:53" (1/1) ... [2024-10-11 23:45:54,034 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:45:53" (1/1) ... [2024-10-11 23:45:54,043 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:45:54,047 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:45:54,048 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:45:54,048 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:45:54,050 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:45:53" (1/1) ... [2024-10-11 23:45:54,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:45:54,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:45:54,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:45:54,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:45:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-11 23:45:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-11 23:45:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-11 23:45:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-11 23:45:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 23:45:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:45:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 23:45:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 23:45:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 23:45:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-11 23:45:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:45:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 23:45:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 23:45:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 23:45:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-11 23:45:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 23:45:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:45:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 23:45:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 23:45:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 23:45:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 23:45:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 23:45:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:45:54,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:45:54,140 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:45:54,279 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:45:54,281 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:45:54,646 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:45:54,646 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:45:54,930 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:45:54,930 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 23:45:54,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:45:54 BoogieIcfgContainer [2024-10-11 23:45:54,931 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:45:54,934 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:45:54,934 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:45:54,937 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:45:54,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:45:53" (1/3) ... [2024-10-11 23:45:54,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d704d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:45:54, skipping insertion in model container [2024-10-11 23:45:54,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:45:53" (2/3) ... [2024-10-11 23:45:54,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d704d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:45:54, skipping insertion in model container [2024-10-11 23:45:54,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:45:54" (3/3) ... [2024-10-11 23:45:54,940 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2024-10-11 23:45:54,958 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:45:54,959 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-11 23:45:54,959 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:45:55,047 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 23:45:55,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 186 flow [2024-10-11 23:45:55,135 INFO L124 PetriNetUnfolderBase]: 10/84 cut-off events. [2024-10-11 23:45:55,135 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 23:45:55,141 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 222 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. [2024-10-11 23:45:55,141 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 186 flow [2024-10-11 23:45:55,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 80 transitions, 169 flow [2024-10-11 23:45:55,156 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:45:55,163 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;@354c8823, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:45:55,163 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-10-11 23:45:55,169 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:45:55,169 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-10-11 23:45:55,170 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:45:55,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:45:55,171 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:45:55,171 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:45:55,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:45:55,179 INFO L85 PathProgramCache]: Analyzing trace with hash -664948138, now seen corresponding path program 1 times [2024-10-11 23:45:55,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:45:55,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132009574] [2024-10-11 23:45:55,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:45:55,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:45:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:45:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:45:55,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:45:55,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132009574] [2024-10-11 23:45:55,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132009574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:45:55,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:45:55,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:45:55,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95870263] [2024-10-11 23:45:55,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:45:55,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:45:55,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:45:55,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:45:55,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:45:55,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-10-11 23:45:55,926 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) [2024-10-11 23:45:55,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:45:55,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-10-11 23:45:55,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:45:56,444 INFO L124 PetriNetUnfolderBase]: 1242/2600 cut-off events. [2024-10-11 23:45:56,445 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-10-11 23:45:56,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4598 conditions, 2600 events. 1242/2600 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16691 event pairs, 264 based on Foata normal form. 60/2294 useless extension candidates. Maximal degree in co-relation 4524. Up to 1757 conditions per place. [2024-10-11 23:45:56,471 INFO L140 encePairwiseOnDemand]: 79/86 looper letters, 82 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2024-10-11 23:45:56,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 427 flow [2024-10-11 23:45:56,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:45:56,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:45:56,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 253 transitions. [2024-10-11 23:45:56,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5883720930232558 [2024-10-11 23:45:56,489 INFO L175 Difference]: Start difference. First operand has 78 places, 80 transitions, 169 flow. Second operand 5 states and 253 transitions. [2024-10-11 23:45:56,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 427 flow [2024-10-11 23:45:56,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 118 transitions, 420 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:45:56,498 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 208 flow [2024-10-11 23:45:56,502 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=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2024-10-11 23:45:56,506 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 4 predicate places. [2024-10-11 23:45:56,506 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 208 flow [2024-10-11 23:45:56,507 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) [2024-10-11 23:45:56,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:45:56,507 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:45:56,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:45:56,507 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:45:56,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:45:56,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1080044368, now seen corresponding path program 1 times [2024-10-11 23:45:56,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:45:56,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179960959] [2024-10-11 23:45:56,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:45:56,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:45:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:45:56,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:45:56,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:45:56,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179960959] [2024-10-11 23:45:56,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179960959] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:45:56,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:45:56,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:45:56,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656941296] [2024-10-11 23:45:56,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:45:56,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:45:56,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:45:56,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:45:56,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 23:45:56,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-10-11 23:45:56,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 208 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) [2024-10-11 23:45:56,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:45:56,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-10-11 23:45:56,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:45:57,214 INFO L124 PetriNetUnfolderBase]: 1326/2714 cut-off events. [2024-10-11 23:45:57,214 INFO L125 PetriNetUnfolderBase]: For 352/360 co-relation queries the response was YES. [2024-10-11 23:45:57,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5161 conditions, 2714 events. 1326/2714 cut-off events. For 352/360 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 17300 event pairs, 266 based on Foata normal form. 44/2400 useless extension candidates. Maximal degree in co-relation 4899. Up to 1807 conditions per place. [2024-10-11 23:45:57,231 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 103 selfloop transitions, 11 changer transitions 0/144 dead transitions. [2024-10-11 23:45:57,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 144 transitions, 576 flow [2024-10-11 23:45:57,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:45:57,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:45:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 341 transitions. [2024-10-11 23:45:57,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5664451827242525 [2024-10-11 23:45:57,236 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 208 flow. Second operand 7 states and 341 transitions. [2024-10-11 23:45:57,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 144 transitions, 576 flow [2024-10-11 23:45:57,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 144 transitions, 576 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:45:57,246 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 277 flow [2024-10-11 23:45:57,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=208, 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=277, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2024-10-11 23:45:57,247 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2024-10-11 23:45:57,247 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 277 flow [2024-10-11 23:45:57,248 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) [2024-10-11 23:45:57,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:45:57,249 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:45:57,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 23:45:57,250 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:45:57,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:45:57,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2075149819, now seen corresponding path program 1 times [2024-10-11 23:45:57,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:45:57,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750061035] [2024-10-11 23:45:57,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:45:57,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:45:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:45:57,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:45:57,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:45:57,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750061035] [2024-10-11 23:45:57,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750061035] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:45:57,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:45:57,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:45:57,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653549354] [2024-10-11 23:45:57,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:45:57,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:45:57,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:45:57,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:45:57,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:45:57,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-10-11 23:45:57,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 277 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) [2024-10-11 23:45:57,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:45:57,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-10-11 23:45:57,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:45:57,670 INFO L124 PetriNetUnfolderBase]: 1023/2381 cut-off events. [2024-10-11 23:45:57,670 INFO L125 PetriNetUnfolderBase]: For 437/437 co-relation queries the response was YES. [2024-10-11 23:45:57,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4339 conditions, 2381 events. 1023/2381 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13996 event pairs, 483 based on Foata normal form. 43/2127 useless extension candidates. Maximal degree in co-relation 4329. Up to 885 conditions per place. [2024-10-11 23:45:57,687 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 64 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2024-10-11 23:45:57,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 97 transitions, 370 flow [2024-10-11 23:45:57,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:45:57,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:45:57,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-10-11 23:45:57,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6821705426356589 [2024-10-11 23:45:57,689 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 277 flow. Second operand 3 states and 176 transitions. [2024-10-11 23:45:57,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 97 transitions, 370 flow [2024-10-11 23:45:57,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 335 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-10-11 23:45:57,694 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 169 flow [2024-10-11 23:45:57,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=73, 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=76, PETRI_TRANSITIONS=76} [2024-10-11 23:45:57,695 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-10-11 23:45:57,695 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 169 flow [2024-10-11 23:45:57,695 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) [2024-10-11 23:45:57,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:45:57,696 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:45:57,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:45:57,696 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:45:57,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:45:57,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1354145374, now seen corresponding path program 1 times [2024-10-11 23:45:57,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:45:57,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815618340] [2024-10-11 23:45:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:45:57,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:45:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:45:57,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:45:57,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:45:57,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815618340] [2024-10-11 23:45:57,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815618340] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:45:57,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:45:57,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:45:57,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351839627] [2024-10-11 23:45:57,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:45:57,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:45:57,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:45:57,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:45:57,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:45:57,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 86 [2024-10-11 23:45:57,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 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) [2024-10-11 23:45:57,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:45:57,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 86 [2024-10-11 23:45:57,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:45:58,265 INFO L124 PetriNetUnfolderBase]: 1890/4163 cut-off events. [2024-10-11 23:45:58,266 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-10-11 23:45:58,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7419 conditions, 4163 events. 1890/4163 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 27060 event pairs, 960 based on Foata normal form. 138/3787 useless extension candidates. Maximal degree in co-relation 7413. Up to 1980 conditions per place. [2024-10-11 23:45:58,293 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 113 selfloop transitions, 3 changer transitions 0/144 dead transitions. [2024-10-11 23:45:58,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 144 transitions, 554 flow [2024-10-11 23:45:58,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:45:58,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:45:58,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2024-10-11 23:45:58,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7325581395348837 [2024-10-11 23:45:58,296 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 169 flow. Second operand 4 states and 252 transitions. [2024-10-11 23:45:58,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 144 transitions, 554 flow [2024-10-11 23:45:58,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 144 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:45:58,302 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 190 flow [2024-10-11 23:45:58,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=75, 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=80, PETRI_TRANSITIONS=78} [2024-10-11 23:45:58,303 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2024-10-11 23:45:58,303 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 190 flow [2024-10-11 23:45:58,303 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) [2024-10-11 23:45:58,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:45:58,303 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:45:58,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 23:45:58,304 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:45:58,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:45:58,305 INFO L85 PathProgramCache]: Analyzing trace with hash -891897917, now seen corresponding path program 1 times [2024-10-11 23:45:58,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:45:58,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357768421] [2024-10-11 23:45:58,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:45:58,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:45:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:45:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:45:58,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:45:58,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357768421] [2024-10-11 23:45:58,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357768421] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:45:58,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:45:58,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 23:45:58,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256363471] [2024-10-11 23:45:58,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:45:58,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:45:58,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:45:58,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:45:58,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 23:45:58,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-10-11 23:45:58,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 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) [2024-10-11 23:45:58,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:45:58,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-10-11 23:45:58,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:45:59,159 INFO L124 PetriNetUnfolderBase]: 1823/4037 cut-off events. [2024-10-11 23:45:59,160 INFO L125 PetriNetUnfolderBase]: For 834/962 co-relation queries the response was YES. [2024-10-11 23:45:59,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7762 conditions, 4037 events. 1823/4037 cut-off events. For 834/962 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 26260 event pairs, 263 based on Foata normal form. 0/3591 useless extension candidates. Maximal degree in co-relation 7754. Up to 2417 conditions per place. [2024-10-11 23:45:59,187 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 78 selfloop transitions, 9 changer transitions 0/117 dead transitions. [2024-10-11 23:45:59,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 500 flow [2024-10-11 23:45:59,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:45:59,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:45:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 259 transitions. [2024-10-11 23:45:59,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6023255813953489 [2024-10-11 23:45:59,189 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 190 flow. Second operand 5 states and 259 transitions. [2024-10-11 23:45:59,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 500 flow [2024-10-11 23:45:59,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 117 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:45:59,194 INFO L231 Difference]: Finished difference. Result has 84 places, 80 transitions, 224 flow [2024-10-11 23:45:59,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2024-10-11 23:45:59,195 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2024-10-11 23:45:59,197 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 224 flow [2024-10-11 23:45:59,197 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) [2024-10-11 23:45:59,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:45:59,197 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:45:59,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 23:45:59,198 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:45:59,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:45:59,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1915681900, now seen corresponding path program 1 times [2024-10-11 23:45:59,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:45:59,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558606188] [2024-10-11 23:45:59,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:45:59,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:45:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:45:59,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:45:59,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:45:59,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558606188] [2024-10-11 23:45:59,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558606188] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:45:59,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756763758] [2024-10-11 23:45:59,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:45:59,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:45:59,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:45:59,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:45:59,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:45:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:45:59,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:45:59,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:45:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:45:59,470 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:45:59,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756763758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:45:59,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:45:59,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-11 23:45:59,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307447243] [2024-10-11 23:45:59,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:45:59,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:45:59,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:45:59,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:45:59,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 23:45:59,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2024-10-11 23:45:59,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 224 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) [2024-10-11 23:45:59,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:45:59,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2024-10-11 23:45:59,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:45:59,978 INFO L124 PetriNetUnfolderBase]: 2026/4126 cut-off events. [2024-10-11 23:45:59,979 INFO L125 PetriNetUnfolderBase]: For 914/914 co-relation queries the response was YES. [2024-10-11 23:45:59,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8786 conditions, 4126 events. 2026/4126 cut-off events. For 914/914 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 25792 event pairs, 112 based on Foata normal form. 74/3888 useless extension candidates. Maximal degree in co-relation 8777. Up to 2026 conditions per place. [2024-10-11 23:46:00,003 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 105 selfloop transitions, 5 changer transitions 0/137 dead transitions. [2024-10-11 23:46:00,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 137 transitions, 606 flow [2024-10-11 23:46:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:00,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:00,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-10-11 23:46:00,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-10-11 23:46:00,005 INFO L175 Difference]: Start difference. First operand has 84 places, 80 transitions, 224 flow. Second operand 4 states and 233 transitions. [2024-10-11 23:46:00,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 137 transitions, 606 flow [2024-10-11 23:46:00,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 137 transitions, 584 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:46:00,012 INFO L231 Difference]: Finished difference. Result has 83 places, 79 transitions, 220 flow [2024-10-11 23:46:00,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=80, 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=220, PETRI_PLACES=83, PETRI_TRANSITIONS=79} [2024-10-11 23:46:00,014 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-10-11 23:46:00,014 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 79 transitions, 220 flow [2024-10-11 23:46:00,015 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) [2024-10-11 23:46:00,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:00,015 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:00,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 23:46:00,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:00,216 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:00,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:00,217 INFO L85 PathProgramCache]: Analyzing trace with hash 368551013, now seen corresponding path program 1 times [2024-10-11 23:46:00,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:00,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087836059] [2024-10-11 23:46:00,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:00,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:01,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:01,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087836059] [2024-10-11 23:46:01,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087836059] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:01,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:01,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:46:01,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501213041] [2024-10-11 23:46:01,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:01,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:46:01,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:01,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:46:01,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:46:01,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-10-11 23:46:01,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 79 transitions, 220 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) [2024-10-11 23:46:01,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:01,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-10-11 23:46:01,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:01,847 INFO L124 PetriNetUnfolderBase]: 2417/4985 cut-off events. [2024-10-11 23:46:01,850 INFO L125 PetriNetUnfolderBase]: For 2284/2364 co-relation queries the response was YES. [2024-10-11 23:46:01,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10798 conditions, 4985 events. 2417/4985 cut-off events. For 2284/2364 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 32571 event pairs, 444 based on Foata normal form. 22/4531 useless extension candidates. Maximal degree in co-relation 10789. Up to 2624 conditions per place. [2024-10-11 23:46:01,884 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 138 selfloop transitions, 8 changer transitions 0/171 dead transitions. [2024-10-11 23:46:01,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 171 transitions, 887 flow [2024-10-11 23:46:01,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 23:46:01,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 23:46:01,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 379 transitions. [2024-10-11 23:46:01,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4896640826873385 [2024-10-11 23:46:01,886 INFO L175 Difference]: Start difference. First operand has 83 places, 79 transitions, 220 flow. Second operand 9 states and 379 transitions. [2024-10-11 23:46:01,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 171 transitions, 887 flow [2024-10-11 23:46:01,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 171 transitions, 807 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:46:01,892 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 247 flow [2024-10-11 23:46:01,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=247, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-10-11 23:46:01,895 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2024-10-11 23:46:01,896 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 247 flow [2024-10-11 23:46:01,896 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) [2024-10-11 23:46:01,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:01,896 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:01,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 23:46:01,897 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:01,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:01,898 INFO L85 PathProgramCache]: Analyzing trace with hash 743404076, now seen corresponding path program 1 times [2024-10-11 23:46:01,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:01,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070555410] [2024-10-11 23:46:01,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:01,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:01,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:46:01,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:01,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070555410] [2024-10-11 23:46:01,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070555410] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:01,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:01,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:01,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643336572] [2024-10-11 23:46:01,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:01,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:01,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:01,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:01,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:01,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2024-10-11 23:46:01,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 247 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) [2024-10-11 23:46:01,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:01,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2024-10-11 23:46:01,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:02,467 INFO L124 PetriNetUnfolderBase]: 2102/4438 cut-off events. [2024-10-11 23:46:02,467 INFO L125 PetriNetUnfolderBase]: For 1469/1523 co-relation queries the response was YES. [2024-10-11 23:46:02,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9431 conditions, 4438 events. 2102/4438 cut-off events. For 1469/1523 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 29032 event pairs, 394 based on Foata normal form. 0/4182 useless extension candidates. Maximal degree in co-relation 9420. Up to 2113 conditions per place. [2024-10-11 23:46:02,486 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 104 selfloop transitions, 6 changer transitions 6/144 dead transitions. [2024-10-11 23:46:02,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 144 transitions, 681 flow [2024-10-11 23:46:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:02,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:02,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-10-11 23:46:02,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-10-11 23:46:02,488 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 247 flow. Second operand 4 states and 233 transitions. [2024-10-11 23:46:02,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 144 transitions, 681 flow [2024-10-11 23:46:02,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 144 transitions, 659 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 23:46:02,493 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 251 flow [2024-10-11 23:46:02,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2024-10-11 23:46:02,494 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2024-10-11 23:46:02,494 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 251 flow [2024-10-11 23:46:02,495 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) [2024-10-11 23:46:02,495 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:02,495 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] [2024-10-11 23:46:02,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 23:46:02,495 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:02,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:02,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1459819687, now seen corresponding path program 1 times [2024-10-11 23:46:02,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:02,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087446068] [2024-10-11 23:46:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:02,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:03,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:03,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087446068] [2024-10-11 23:46:03,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087446068] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:03,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:03,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:46:03,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362785796] [2024-10-11 23:46:03,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:03,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:46:03,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:03,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:46:03,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:46:03,080 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-10-11 23:46:03,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 251 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) [2024-10-11 23:46:03,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:03,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-10-11 23:46:03,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:03,862 INFO L124 PetriNetUnfolderBase]: 2331/4844 cut-off events. [2024-10-11 23:46:03,862 INFO L125 PetriNetUnfolderBase]: For 3146/3146 co-relation queries the response was YES. [2024-10-11 23:46:03,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11000 conditions, 4844 events. 2331/4844 cut-off events. For 3146/3146 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 31685 event pairs, 444 based on Foata normal form. 22/4512 useless extension candidates. Maximal degree in co-relation 10988. Up to 2624 conditions per place. [2024-10-11 23:46:03,890 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 133 selfloop transitions, 8 changer transitions 2/168 dead transitions. [2024-10-11 23:46:03,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 168 transitions, 923 flow [2024-10-11 23:46:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 23:46:03,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 23:46:03,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 376 transitions. [2024-10-11 23:46:03,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48578811369509045 [2024-10-11 23:46:03,893 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 251 flow. Second operand 9 states and 376 transitions. [2024-10-11 23:46:03,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 168 transitions, 923 flow [2024-10-11 23:46:03,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 168 transitions, 863 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:46:03,900 INFO L231 Difference]: Finished difference. Result has 94 places, 79 transitions, 252 flow [2024-10-11 23:46:03,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=252, PETRI_PLACES=94, PETRI_TRANSITIONS=79} [2024-10-11 23:46:03,901 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 16 predicate places. [2024-10-11 23:46:03,902 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 79 transitions, 252 flow [2024-10-11 23:46:03,903 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) [2024-10-11 23:46:03,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:03,903 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] [2024-10-11 23:46:03,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 23:46:03,904 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:03,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:03,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1990198984, now seen corresponding path program 1 times [2024-10-11 23:46:03,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:03,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5147561] [2024-10-11 23:46:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:03,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:03,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:03,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5147561] [2024-10-11 23:46:03,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5147561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:03,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:03,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:03,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550934798] [2024-10-11 23:46:03,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:03,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:03,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:03,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:03,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:03,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-10-11 23:46:03,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 79 transitions, 252 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) [2024-10-11 23:46:03,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:03,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-10-11 23:46:03,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:04,535 INFO L124 PetriNetUnfolderBase]: 2969/6052 cut-off events. [2024-10-11 23:46:04,535 INFO L125 PetriNetUnfolderBase]: For 2970/2980 co-relation queries the response was YES. [2024-10-11 23:46:04,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13628 conditions, 6052 events. 2969/6052 cut-off events. For 2970/2980 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 41650 event pairs, 1613 based on Foata normal form. 144/5892 useless extension candidates. Maximal degree in co-relation 13615. Up to 3800 conditions per place. [2024-10-11 23:46:04,572 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 97 selfloop transitions, 3 changer transitions 0/125 dead transitions. [2024-10-11 23:46:04,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 125 transitions, 623 flow [2024-10-11 23:46:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:04,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2024-10-11 23:46:04,574 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6395348837209303 [2024-10-11 23:46:04,574 INFO L175 Difference]: Start difference. First operand has 94 places, 79 transitions, 252 flow. Second operand 4 states and 220 transitions. [2024-10-11 23:46:04,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 125 transitions, 623 flow [2024-10-11 23:46:04,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 125 transitions, 608 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 23:46:04,581 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 268 flow [2024-10-11 23:46:04,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-10-11 23:46:04,583 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 15 predicate places. [2024-10-11 23:46:04,584 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 268 flow [2024-10-11 23:46:04,584 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) [2024-10-11 23:46:04,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:04,585 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] [2024-10-11 23:46:04,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 23:46:04,585 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:04,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:04,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1567612222, now seen corresponding path program 1 times [2024-10-11 23:46:04,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:04,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888265126] [2024-10-11 23:46:04,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:04,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:05,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:05,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888265126] [2024-10-11 23:46:05,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888265126] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:05,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:05,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:46:05,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496750618] [2024-10-11 23:46:05,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:05,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:46:05,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:05,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:46:05,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:46:05,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 86 [2024-10-11 23:46:05,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 268 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) [2024-10-11 23:46:05,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:05,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 86 [2024-10-11 23:46:05,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:06,561 INFO L124 PetriNetUnfolderBase]: 4879/9670 cut-off events. [2024-10-11 23:46:06,561 INFO L125 PetriNetUnfolderBase]: For 4368/4532 co-relation queries the response was YES. [2024-10-11 23:46:06,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22715 conditions, 9670 events. 4879/9670 cut-off events. For 4368/4532 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 67647 event pairs, 382 based on Foata normal form. 0/9091 useless extension candidates. Maximal degree in co-relation 22699. Up to 2261 conditions per place. [2024-10-11 23:46:06,611 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 191 selfloop transitions, 45 changer transitions 0/261 dead transitions. [2024-10-11 23:46:06,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 261 transitions, 1394 flow [2024-10-11 23:46:06,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 23:46:06,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 23:46:06,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 592 transitions. [2024-10-11 23:46:06,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5295169946332737 [2024-10-11 23:46:06,614 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 268 flow. Second operand 13 states and 592 transitions. [2024-10-11 23:46:06,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 261 transitions, 1394 flow [2024-10-11 23:46:06,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 261 transitions, 1391 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:46:06,628 INFO L231 Difference]: Finished difference. Result has 113 places, 117 transitions, 580 flow [2024-10-11 23:46:06,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=580, PETRI_PLACES=113, PETRI_TRANSITIONS=117} [2024-10-11 23:46:06,629 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 35 predicate places. [2024-10-11 23:46:06,629 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 117 transitions, 580 flow [2024-10-11 23:46:06,629 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) [2024-10-11 23:46:06,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:06,629 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] [2024-10-11 23:46:06,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 23:46:06,630 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:06,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:06,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1351339435, now seen corresponding path program 1 times [2024-10-11 23:46:06,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:06,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876291074] [2024-10-11 23:46:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:06,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:07,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:07,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:07,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876291074] [2024-10-11 23:46:07,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876291074] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:07,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:07,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 23:46:07,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111155276] [2024-10-11 23:46:07,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:07,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:46:07,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:07,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:46:07,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:46:07,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-10-11 23:46:07,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 117 transitions, 580 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) [2024-10-11 23:46:07,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:07,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-10-11 23:46:07,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:08,256 INFO L124 PetriNetUnfolderBase]: 4574/9371 cut-off events. [2024-10-11 23:46:08,256 INFO L125 PetriNetUnfolderBase]: For 9642/9784 co-relation queries the response was YES. [2024-10-11 23:46:08,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25652 conditions, 9371 events. 4574/9371 cut-off events. For 9642/9784 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 67361 event pairs, 1057 based on Foata normal form. 44/9303 useless extension candidates. Maximal degree in co-relation 25628. Up to 5106 conditions per place. [2024-10-11 23:46:08,308 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 176 selfloop transitions, 19 changer transitions 2/226 dead transitions. [2024-10-11 23:46:08,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 226 transitions, 1437 flow [2024-10-11 23:46:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 23:46:08,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 23:46:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 458 transitions. [2024-10-11 23:46:08,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5325581395348837 [2024-10-11 23:46:08,311 INFO L175 Difference]: Start difference. First operand has 113 places, 117 transitions, 580 flow. Second operand 10 states and 458 transitions. [2024-10-11 23:46:08,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 226 transitions, 1437 flow [2024-10-11 23:46:08,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 226 transitions, 1407 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-10-11 23:46:08,361 INFO L231 Difference]: Finished difference. Result has 124 places, 120 transitions, 647 flow [2024-10-11 23:46:08,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=647, PETRI_PLACES=124, PETRI_TRANSITIONS=120} [2024-10-11 23:46:08,362 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 46 predicate places. [2024-10-11 23:46:08,362 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 120 transitions, 647 flow [2024-10-11 23:46:08,363 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) [2024-10-11 23:46:08,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:08,363 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] [2024-10-11 23:46:08,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 23:46:08,363 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:08,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:08,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1795582978, now seen corresponding path program 1 times [2024-10-11 23:46:08,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:08,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232754298] [2024-10-11 23:46:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:08,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:08,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:08,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:08,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232754298] [2024-10-11 23:46:08,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232754298] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:08,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382239203] [2024-10-11 23:46:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:08,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:08,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:08,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:08,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:46:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:08,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:46:08,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:08,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:08,617 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:46:08,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382239203] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:08,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:46:08,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-11 23:46:08,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953657547] [2024-10-11 23:46:08,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:08,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:46:08,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:08,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:46:08,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 23:46:08,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 86 [2024-10-11 23:46:08,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 120 transitions, 647 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) [2024-10-11 23:46:08,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:08,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 86 [2024-10-11 23:46:08,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:09,558 INFO L124 PetriNetUnfolderBase]: 4813/9519 cut-off events. [2024-10-11 23:46:09,558 INFO L125 PetriNetUnfolderBase]: For 12744/12820 co-relation queries the response was YES. [2024-10-11 23:46:09,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27560 conditions, 9519 events. 4813/9519 cut-off events. For 12744/12820 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 67000 event pairs, 1175 based on Foata normal form. 230/9496 useless extension candidates. Maximal degree in co-relation 27533. Up to 5620 conditions per place. [2024-10-11 23:46:09,620 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 117 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2024-10-11 23:46:09,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 148 transitions, 1009 flow [2024-10-11 23:46:09,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:09,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-10-11 23:46:09,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5668604651162791 [2024-10-11 23:46:09,622 INFO L175 Difference]: Start difference. First operand has 124 places, 120 transitions, 647 flow. Second operand 4 states and 195 transitions. [2024-10-11 23:46:09,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 148 transitions, 1009 flow [2024-10-11 23:46:09,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 148 transitions, 997 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 23:46:09,694 INFO L231 Difference]: Finished difference. Result has 120 places, 118 transitions, 637 flow [2024-10-11 23:46:09,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=637, PETRI_PLACES=120, PETRI_TRANSITIONS=118} [2024-10-11 23:46:09,696 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 42 predicate places. [2024-10-11 23:46:09,696 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 118 transitions, 637 flow [2024-10-11 23:46:09,696 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) [2024-10-11 23:46:09,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:09,697 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] [2024-10-11 23:46:09,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 23:46:09,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:09,898 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:09,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:09,898 INFO L85 PathProgramCache]: Analyzing trace with hash 171503334, now seen corresponding path program 1 times [2024-10-11 23:46:09,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:09,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698790163] [2024-10-11 23:46:09,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:09,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:46:09,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:09,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698790163] [2024-10-11 23:46:09,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698790163] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:09,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:09,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:09,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551567252] [2024-10-11 23:46:09,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:09,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:09,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:09,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:09,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:09,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 86 [2024-10-11 23:46:09,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 118 transitions, 637 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) [2024-10-11 23:46:09,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:09,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 86 [2024-10-11 23:46:09,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:10,703 INFO L124 PetriNetUnfolderBase]: 4344/8880 cut-off events. [2024-10-11 23:46:10,704 INFO L125 PetriNetUnfolderBase]: For 12647/12709 co-relation queries the response was YES. [2024-10-11 23:46:10,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25910 conditions, 8880 events. 4344/8880 cut-off events. For 12647/12709 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 62567 event pairs, 1087 based on Foata normal form. 230/9004 useless extension candidates. Maximal degree in co-relation 25882. Up to 4842 conditions per place. [2024-10-11 23:46:10,861 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 123 selfloop transitions, 6 changer transitions 0/155 dead transitions. [2024-10-11 23:46:10,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 155 transitions, 1053 flow [2024-10-11 23:46:10,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:10,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-10-11 23:46:10,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-10-11 23:46:10,866 INFO L175 Difference]: Start difference. First operand has 120 places, 118 transitions, 637 flow. Second operand 4 states and 200 transitions. [2024-10-11 23:46:10,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 155 transitions, 1053 flow [2024-10-11 23:46:10,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 155 transitions, 1043 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:46:10,942 INFO L231 Difference]: Finished difference. Result has 119 places, 117 transitions, 639 flow [2024-10-11 23:46:10,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=639, PETRI_PLACES=119, PETRI_TRANSITIONS=117} [2024-10-11 23:46:10,943 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 41 predicate places. [2024-10-11 23:46:10,943 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 117 transitions, 639 flow [2024-10-11 23:46:10,943 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) [2024-10-11 23:46:10,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:10,944 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] [2024-10-11 23:46:10,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 23:46:10,944 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:10,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:10,945 INFO L85 PathProgramCache]: Analyzing trace with hash -186443310, now seen corresponding path program 1 times [2024-10-11 23:46:10,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:10,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802341334] [2024-10-11 23:46:10,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:10,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:11,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:11,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802341334] [2024-10-11 23:46:11,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802341334] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:11,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:11,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:11,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715228205] [2024-10-11 23:46:11,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:11,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:46:11,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:11,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:46:11,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:46:11,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-10-11 23:46:11,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 117 transitions, 639 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) [2024-10-11 23:46:11,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:11,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-10-11 23:46:11,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:11,720 INFO L124 PetriNetUnfolderBase]: 1726/3914 cut-off events. [2024-10-11 23:46:11,720 INFO L125 PetriNetUnfolderBase]: For 5758/5758 co-relation queries the response was YES. [2024-10-11 23:46:11,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11346 conditions, 3914 events. 1726/3914 cut-off events. For 5758/5758 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 25472 event pairs, 514 based on Foata normal form. 166/4028 useless extension candidates. Maximal degree in co-relation 11318. Up to 1934 conditions per place. [2024-10-11 23:46:11,750 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 68 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2024-10-11 23:46:11,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 101 transitions, 641 flow [2024-10-11 23:46:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:46:11,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:46:11,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-10-11 23:46:11,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-10-11 23:46:11,752 INFO L175 Difference]: Start difference. First operand has 119 places, 117 transitions, 639 flow. Second operand 3 states and 166 transitions. [2024-10-11 23:46:11,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 101 transitions, 641 flow [2024-10-11 23:46:11,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 101 transitions, 583 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-10-11 23:46:11,780 INFO L231 Difference]: Finished difference. Result has 107 places, 84 transitions, 370 flow [2024-10-11 23:46:11,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=107, PETRI_TRANSITIONS=84} [2024-10-11 23:46:11,780 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 29 predicate places. [2024-10-11 23:46:11,781 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 84 transitions, 370 flow [2024-10-11 23:46:11,781 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) [2024-10-11 23:46:11,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:11,782 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] [2024-10-11 23:46:11,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 23:46:11,782 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:11,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:11,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1680207643, now seen corresponding path program 1 times [2024-10-11 23:46:11,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:11,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452058223] [2024-10-11 23:46:11,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:11,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:12,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:12,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:12,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452058223] [2024-10-11 23:46:12,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452058223] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:12,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:12,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 23:46:12,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209550605] [2024-10-11 23:46:12,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:12,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:46:12,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:12,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:46:12,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:46:12,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-10-11 23:46:12,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 84 transitions, 370 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) [2024-10-11 23:46:12,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:12,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-10-11 23:46:12,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:13,039 INFO L124 PetriNetUnfolderBase]: 1738/3823 cut-off events. [2024-10-11 23:46:13,040 INFO L125 PetriNetUnfolderBase]: For 4080/4082 co-relation queries the response was YES. [2024-10-11 23:46:13,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10725 conditions, 3823 events. 1738/3823 cut-off events. For 4080/4082 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 24020 event pairs, 308 based on Foata normal form. 36/3767 useless extension candidates. Maximal degree in co-relation 10702. Up to 1736 conditions per place. [2024-10-11 23:46:13,058 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 121 selfloop transitions, 10 changer transitions 2/158 dead transitions. [2024-10-11 23:46:13,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 158 transitions, 961 flow [2024-10-11 23:46:13,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 23:46:13,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 23:46:13,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 396 transitions. [2024-10-11 23:46:13,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5116279069767442 [2024-10-11 23:46:13,060 INFO L175 Difference]: Start difference. First operand has 107 places, 84 transitions, 370 flow. Second operand 9 states and 396 transitions. [2024-10-11 23:46:13,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 158 transitions, 961 flow [2024-10-11 23:46:13,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 158 transitions, 943 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:46:13,071 INFO L231 Difference]: Finished difference. Result has 113 places, 83 transitions, 370 flow [2024-10-11 23:46:13,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=370, PETRI_PLACES=113, PETRI_TRANSITIONS=83} [2024-10-11 23:46:13,072 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 35 predicate places. [2024-10-11 23:46:13,072 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 83 transitions, 370 flow [2024-10-11 23:46:13,072 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) [2024-10-11 23:46:13,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:13,073 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] [2024-10-11 23:46:13,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 23:46:13,073 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:13,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:13,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1280057151, now seen corresponding path program 1 times [2024-10-11 23:46:13,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:13,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954537558] [2024-10-11 23:46:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:13,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:13,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:13,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954537558] [2024-10-11 23:46:13,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954537558] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:13,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:13,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 23:46:13,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849494035] [2024-10-11 23:46:13,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:13,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 23:46:13,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:13,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 23:46:13,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-11 23:46:13,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-10-11 23:46:13,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 83 transitions, 370 flow. Second operand has 12 states, 12 states have (on average 25.5) internal successors, (306), 12 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:13,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:13,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-10-11 23:46:13,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:14,963 INFO L124 PetriNetUnfolderBase]: 2806/5688 cut-off events. [2024-10-11 23:46:14,964 INFO L125 PetriNetUnfolderBase]: For 5989/5989 co-relation queries the response was YES. [2024-10-11 23:46:14,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16160 conditions, 5688 events. 2806/5688 cut-off events. For 5989/5989 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 34796 event pairs, 362 based on Foata normal form. 36/5639 useless extension candidates. Maximal degree in co-relation 16136. Up to 1429 conditions per place. [2024-10-11 23:46:14,990 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 197 selfloop transitions, 23 changer transitions 0/238 dead transitions. [2024-10-11 23:46:14,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 238 transitions, 1492 flow [2024-10-11 23:46:14,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:46:14,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:46:14,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 528 transitions. [2024-10-11 23:46:14,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40930232558139534 [2024-10-11 23:46:14,992 INFO L175 Difference]: Start difference. First operand has 113 places, 83 transitions, 370 flow. Second operand 15 states and 528 transitions. [2024-10-11 23:46:14,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 238 transitions, 1492 flow [2024-10-11 23:46:15,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 238 transitions, 1474 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-11 23:46:15,004 INFO L231 Difference]: Finished difference. Result has 127 places, 96 transitions, 519 flow [2024-10-11 23:46:15,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=519, PETRI_PLACES=127, PETRI_TRANSITIONS=96} [2024-10-11 23:46:15,005 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 49 predicate places. [2024-10-11 23:46:15,005 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 96 transitions, 519 flow [2024-10-11 23:46:15,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.5) internal successors, (306), 12 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:15,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:15,006 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] [2024-10-11 23:46:15,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 23:46:15,006 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:15,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:15,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1027065191, now seen corresponding path program 1 times [2024-10-11 23:46:15,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:15,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795784744] [2024-10-11 23:46:15,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:15,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:15,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:15,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795784744] [2024-10-11 23:46:15,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795784744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:15,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:15,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 23:46:15,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934364560] [2024-10-11 23:46:15,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:15,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:46:15,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:15,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:46:15,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 23:46:15,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 86 [2024-10-11 23:46:15,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 96 transitions, 519 flow. Second operand has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:15,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:15,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 86 [2024-10-11 23:46:15,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:15,849 INFO L124 PetriNetUnfolderBase]: 2306/5149 cut-off events. [2024-10-11 23:46:15,849 INFO L125 PetriNetUnfolderBase]: For 7515/7515 co-relation queries the response was YES. [2024-10-11 23:46:15,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15122 conditions, 5149 events. 2306/5149 cut-off events. For 7515/7515 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 33616 event pairs, 1278 based on Foata normal form. 53/5116 useless extension candidates. Maximal degree in co-relation 15092. Up to 2593 conditions per place. [2024-10-11 23:46:15,890 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 67 selfloop transitions, 18 changer transitions 0/111 dead transitions. [2024-10-11 23:46:15,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 111 transitions, 758 flow [2024-10-11 23:46:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:46:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:46:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 226 transitions. [2024-10-11 23:46:15,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5255813953488372 [2024-10-11 23:46:15,892 INFO L175 Difference]: Start difference. First operand has 127 places, 96 transitions, 519 flow. Second operand 5 states and 226 transitions. [2024-10-11 23:46:15,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 111 transitions, 758 flow [2024-10-11 23:46:15,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 111 transitions, 742 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-11 23:46:15,913 INFO L231 Difference]: Finished difference. Result has 126 places, 95 transitions, 537 flow [2024-10-11 23:46:15,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=537, PETRI_PLACES=126, PETRI_TRANSITIONS=95} [2024-10-11 23:46:15,914 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 48 predicate places. [2024-10-11 23:46:15,915 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 95 transitions, 537 flow [2024-10-11 23:46:15,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:15,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:15,915 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] [2024-10-11 23:46:15,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 23:46:15,915 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:15,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:15,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1494649876, now seen corresponding path program 1 times [2024-10-11 23:46:15,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:15,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160285164] [2024-10-11 23:46:15,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:15,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:16,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:16,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160285164] [2024-10-11 23:46:16,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160285164] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:16,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:16,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:16,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172023090] [2024-10-11 23:46:16,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:16,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:46:16,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:16,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:46:16,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:46:16,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-10-11 23:46:16,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 95 transitions, 537 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) [2024-10-11 23:46:16,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:16,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-10-11 23:46:16,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:16,451 INFO L124 PetriNetUnfolderBase]: 1680/3779 cut-off events. [2024-10-11 23:46:16,451 INFO L125 PetriNetUnfolderBase]: For 5665/5671 co-relation queries the response was YES. [2024-10-11 23:46:16,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10814 conditions, 3779 events. 1680/3779 cut-off events. For 5665/5671 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 23134 event pairs, 1011 based on Foata normal form. 30/3723 useless extension candidates. Maximal degree in co-relation 10783. Up to 1855 conditions per place. [2024-10-11 23:46:16,473 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 71 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-10-11 23:46:16,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 100 transitions, 634 flow [2024-10-11 23:46:16,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:46:16,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:46:16,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-10-11 23:46:16,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-10-11 23:46:16,474 INFO L175 Difference]: Start difference. First operand has 126 places, 95 transitions, 537 flow. Second operand 3 states and 166 transitions. [2024-10-11 23:46:16,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 100 transitions, 634 flow [2024-10-11 23:46:16,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 100 transitions, 550 flow, removed 5 selfloop flow, removed 18 redundant places. [2024-10-11 23:46:16,487 INFO L231 Difference]: Finished difference. Result has 108 places, 81 transitions, 327 flow [2024-10-11 23:46:16,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=108, PETRI_TRANSITIONS=81} [2024-10-11 23:46:16,487 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 30 predicate places. [2024-10-11 23:46:16,488 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 81 transitions, 327 flow [2024-10-11 23:46:16,488 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) [2024-10-11 23:46:16,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:16,488 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] [2024-10-11 23:46:16,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 23:46:16,488 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:16,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:16,489 INFO L85 PathProgramCache]: Analyzing trace with hash 832856062, now seen corresponding path program 1 times [2024-10-11 23:46:16,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:16,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398664443] [2024-10-11 23:46:16,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:16,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:17,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:17,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398664443] [2024-10-11 23:46:17,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398664443] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:17,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:17,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 23:46:17,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114532946] [2024-10-11 23:46:17,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:17,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 23:46:17,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:17,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 23:46:17,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 23:46:17,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-10-11 23:46:17,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 81 transitions, 327 flow. Second operand has 11 states, 11 states have (on average 31.727272727272727) internal successors, (349), 11 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:17,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:17,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-10-11 23:46:17,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:18,066 INFO L124 PetriNetUnfolderBase]: 1887/3979 cut-off events. [2024-10-11 23:46:18,066 INFO L125 PetriNetUnfolderBase]: For 3485/3487 co-relation queries the response was YES. [2024-10-11 23:46:18,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10715 conditions, 3979 events. 1887/3979 cut-off events. For 3485/3487 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 23206 event pairs, 258 based on Foata normal form. 0/3878 useless extension candidates. Maximal degree in co-relation 10691. Up to 874 conditions per place. [2024-10-11 23:46:18,084 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 150 selfloop transitions, 16 changer transitions 8/196 dead transitions. [2024-10-11 23:46:18,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 196 transitions, 1163 flow [2024-10-11 23:46:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 23:46:18,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 23:46:18,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 523 transitions. [2024-10-11 23:46:18,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4677996422182469 [2024-10-11 23:46:18,086 INFO L175 Difference]: Start difference. First operand has 108 places, 81 transitions, 327 flow. Second operand 13 states and 523 transitions. [2024-10-11 23:46:18,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 196 transitions, 1163 flow [2024-10-11 23:46:18,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 196 transitions, 1155 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:46:18,099 INFO L231 Difference]: Finished difference. Result has 122 places, 86 transitions, 390 flow [2024-10-11 23:46:18,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=390, PETRI_PLACES=122, PETRI_TRANSITIONS=86} [2024-10-11 23:46:18,099 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2024-10-11 23:46:18,099 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 86 transitions, 390 flow [2024-10-11 23:46:18,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.727272727272727) internal successors, (349), 11 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:18,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:18,100 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:18,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 23:46:18,101 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:18,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:18,101 INFO L85 PathProgramCache]: Analyzing trace with hash 48734983, now seen corresponding path program 1 times [2024-10-11 23:46:18,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:18,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412780168] [2024-10-11 23:46:18,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:18,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:19,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:19,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412780168] [2024-10-11 23:46:19,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412780168] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:19,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:19,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 23:46:19,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727261609] [2024-10-11 23:46:19,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:19,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 23:46:19,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:19,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 23:46:19,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 23:46:19,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 86 [2024-10-11 23:46:19,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 86 transitions, 390 flow. Second operand has 11 states, 11 states have (on average 32.72727272727273) internal successors, (360), 11 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:19,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:19,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 86 [2024-10-11 23:46:19,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:19,592 INFO L124 PetriNetUnfolderBase]: 1819/3894 cut-off events. [2024-10-11 23:46:19,592 INFO L125 PetriNetUnfolderBase]: For 3995/3997 co-relation queries the response was YES. [2024-10-11 23:46:19,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10907 conditions, 3894 events. 1819/3894 cut-off events. For 3995/3997 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 22794 event pairs, 265 based on Foata normal form. 26/3898 useless extension candidates. Maximal degree in co-relation 10880. Up to 972 conditions per place. [2024-10-11 23:46:19,610 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 143 selfloop transitions, 15 changer transitions 16/198 dead transitions. [2024-10-11 23:46:19,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 198 transitions, 1228 flow [2024-10-11 23:46:19,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 23:46:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 23:46:19,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 533 transitions. [2024-10-11 23:46:19,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-10-11 23:46:19,612 INFO L175 Difference]: Start difference. First operand has 122 places, 86 transitions, 390 flow. Second operand 13 states and 533 transitions. [2024-10-11 23:46:19,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 198 transitions, 1228 flow [2024-10-11 23:46:19,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 198 transitions, 1210 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-11 23:46:19,621 INFO L231 Difference]: Finished difference. Result has 128 places, 87 transitions, 418 flow [2024-10-11 23:46:19,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=418, PETRI_PLACES=128, PETRI_TRANSITIONS=87} [2024-10-11 23:46:19,622 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 50 predicate places. [2024-10-11 23:46:19,622 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 87 transitions, 418 flow [2024-10-11 23:46:19,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.72727272727273) internal successors, (360), 11 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:19,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:19,622 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] [2024-10-11 23:46:19,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 23:46:19,623 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:19,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:19,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1881943236, now seen corresponding path program 1 times [2024-10-11 23:46:19,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:19,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971317385] [2024-10-11 23:46:19,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:19,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:20,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:20,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:20,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971317385] [2024-10-11 23:46:20,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971317385] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:20,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:20,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 23:46:20,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349271119] [2024-10-11 23:46:20,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:20,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 23:46:20,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:20,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 23:46:20,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-11 23:46:20,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-10-11 23:46:20,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 87 transitions, 418 flow. Second operand has 11 states, 11 states have (on average 35.18181818181818) internal successors, (387), 11 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:20,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:20,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-10-11 23:46:20,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:21,232 INFO L124 PetriNetUnfolderBase]: 1748/3812 cut-off events. [2024-10-11 23:46:21,232 INFO L125 PetriNetUnfolderBase]: For 4153/4155 co-relation queries the response was YES. [2024-10-11 23:46:21,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10807 conditions, 3812 events. 1748/3812 cut-off events. For 4153/4155 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 22250 event pairs, 258 based on Foata normal form. 26/3816 useless extension candidates. Maximal degree in co-relation 10777. Up to 926 conditions per place. [2024-10-11 23:46:21,248 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 141 selfloop transitions, 15 changer transitions 17/199 dead transitions. [2024-10-11 23:46:21,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 199 transitions, 1250 flow [2024-10-11 23:46:21,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 23:46:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 23:46:21,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 558 transitions. [2024-10-11 23:46:21,250 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4991055456171735 [2024-10-11 23:46:21,250 INFO L175 Difference]: Start difference. First operand has 128 places, 87 transitions, 418 flow. Second operand 13 states and 558 transitions. [2024-10-11 23:46:21,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 199 transitions, 1250 flow [2024-10-11 23:46:21,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 199 transitions, 1228 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-10-11 23:46:21,262 INFO L231 Difference]: Finished difference. Result has 131 places, 86 transitions, 420 flow [2024-10-11 23:46:21,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=420, PETRI_PLACES=131, PETRI_TRANSITIONS=86} [2024-10-11 23:46:21,263 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 53 predicate places. [2024-10-11 23:46:21,263 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 86 transitions, 420 flow [2024-10-11 23:46:21,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.18181818181818) internal successors, (387), 11 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:21,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:21,263 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, 1, 1] [2024-10-11 23:46:21,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 23:46:21,264 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-11 23:46:21,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:21,264 INFO L85 PathProgramCache]: Analyzing trace with hash 21741242, now seen corresponding path program 1 times [2024-10-11 23:46:21,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:21,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217577318] [2024-10-11 23:46:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:21,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:22,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:22,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217577318] [2024-10-11 23:46:22,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217577318] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:22,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712120247] [2024-10-11 23:46:22,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:22,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:22,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:22,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:22,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 23:46:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:22,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-10-11 23:46:22,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:22,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2024-10-11 23:46:23,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 52 [2024-10-11 23:46:23,097 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 114 treesize of output 101 [2024-10-11 23:46:23,267 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 71 treesize of output 60 [2024-10-11 23:46:23,389 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 85 treesize of output 68 [2024-10-11 23:46:23,641 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 450 treesize of output 393 [2024-10-11 23:46:24,176 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 169 treesize of output 138 [2024-10-11 23:46:24,798 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 260 treesize of output 217 [2024-10-11 23:46:25,097 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 511 treesize of output 442 [2024-10-11 23:46:25,512 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 1072 treesize of output 921 [2024-10-11 23:46:25,519 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 38 treesize of output 32 [2024-10-11 23:46:25,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:25,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:46:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:55,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712120247] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:46:55,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:46:55,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 14] total 39 [2024-10-11 23:46:55,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983567655] [2024-10-11 23:46:55,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:46:55,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-11 23:46:55,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:55,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-11 23:46:55,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=1355, Unknown=5, NotChecked=0, Total=1640 [2024-10-11 23:46:59,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 23:47:03,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 23:47:03,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 86 [2024-10-11 23:47:03,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 86 transitions, 420 flow. Second operand has 41 states, 41 states have (on average 24.073170731707318) internal successors, (987), 41 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:03,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:03,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 86 [2024-10-11 23:47:03,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:12,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]