./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:59:57,641 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:59:57,717 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:59:57,723 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:59:57,725 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:59:57,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:59:57,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:59:57,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:59:57,753 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:59:57,755 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:59:57,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:59:57,756 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:59:57,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:59:57,760 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:59:57,760 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:59:57,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:59:57,761 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:59:57,761 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:59:57,761 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:59:57,761 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:59:57,762 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:59:57,762 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:59:57,762 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:59:57,764 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:59:57,764 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:59:57,764 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:59:57,765 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:59:57,765 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:59:57,765 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:59:57,765 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:59:57,766 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:59:57,766 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:59:57,766 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:59:57,766 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:59:57,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:59:57,767 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:59:57,769 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:59:57,769 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:59:57,769 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:59:57,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:59:57,770 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:59:57,770 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:59:57,770 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:59:57,771 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:59:57,771 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 [2024-11-19 13:59:58,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:59:58,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:59:58,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:59:58,103 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:59:58,103 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:59:58,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-11-19 13:59:59,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:59:59,839 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:59:59,839 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-11-19 13:59:59,861 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc743c338/0b3ac6e1a870461a9819c920cd433eb0/FLAG8517dc0e9 [2024-11-19 13:59:59,877 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc743c338/0b3ac6e1a870461a9819c920cd433eb0 [2024-11-19 13:59:59,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:59:59,881 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:59:59,882 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:59:59,882 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:59:59,887 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:59:59,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:59:59" (1/1) ... [2024-11-19 13:59:59,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a80f495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:59, skipping insertion in model container [2024-11-19 13:59:59,888 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:59:59" (1/1) ... [2024-11-19 13:59:59,935 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:00:00,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:00:00,289 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:00:00,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:00:00,398 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:00:00,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:00 WrapperNode [2024-11-19 14:00:00,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:00:00,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:00:00,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:00:00,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:00:00,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:00" (1/1) ... [2024-11-19 14:00:00,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:00" (1/1) ... [2024-11-19 14:00:00,450 INFO L138 Inliner]: procedures = 172, calls = 61, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 161 [2024-11-19 14:00:00,451 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:00:00,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:00:00,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:00:00,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:00:00,464 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:00" (1/1) ... [2024-11-19 14:00:00,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:00" (1/1) ... [2024-11-19 14:00:00,473 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:00" (1/1) ... [2024-11-19 14:00:00,514 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-11-19 14:00:00,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:00" (1/1) ... [2024-11-19 14:00:00,515 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:00" (1/1) ... [2024-11-19 14:00:00,526 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:00" (1/1) ... [2024-11-19 14:00:00,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:00" (1/1) ... [2024-11-19 14:00:00,534 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:00" (1/1) ... [2024-11-19 14:00:00,535 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:00" (1/1) ... [2024-11-19 14:00:00,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:00:00,543 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:00:00,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:00:00,543 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:00:00,544 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:00" (1/1) ... [2024-11-19 14:00:00,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:00:00,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:00:00,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:00:00,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:00:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:00:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:00:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 14:00:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 14:00:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 14:00:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:00:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:00:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 14:00:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 14:00:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 14:00:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 14:00:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:00:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 14:00:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-19 14:00:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-19 14:00:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 14:00:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-11-19 14:00:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:00:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:00:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 14:00:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 14:00:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 14:00:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 14:00:00,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:00:00,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:00:00,634 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:00:00,797 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:00:00,803 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:00:01,163 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:00:01,163 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:00:01,383 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:00:01,383 INFO L316 CfgBuilder]: Removed 23 assume(true) statements. [2024-11-19 14:00:01,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:00:01 BoogieIcfgContainer [2024-11-19 14:00:01,384 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:00:01,388 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:00:01,388 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:00:01,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:00:01,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:59:59" (1/3) ... [2024-11-19 14:00:01,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a671ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:00:01, skipping insertion in model container [2024-11-19 14:00:01,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:00" (2/3) ... [2024-11-19 14:00:01,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a671ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:00:01, skipping insertion in model container [2024-11-19 14:00:01,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:00:01" (3/3) ... [2024-11-19 14:00:01,395 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2024-11-19 14:00:01,412 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:00:01,412 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-19 14:00:01,413 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:00:01,463 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-19 14:00:01,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 121 transitions, 249 flow [2024-11-19 14:00:01,589 INFO L124 PetriNetUnfolderBase]: 33/167 cut-off events. [2024-11-19 14:00:01,590 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 14:00:01,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 167 events. 33/167 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 688 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 112. Up to 6 conditions per place. [2024-11-19 14:00:01,597 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 121 transitions, 249 flow [2024-11-19 14:00:01,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 120 transitions, 247 flow [2024-11-19 14:00:01,613 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:00:01,622 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;@675443f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:00:01,623 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-19 14:00:01,628 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:00:01,629 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-19 14:00:01,629 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:00:01,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:01,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 14:00:01,631 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:00:01,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:01,636 INFO L85 PathProgramCache]: Analyzing trace with hash 627244796, now seen corresponding path program 1 times [2024-11-19 14:00:01,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:01,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955937913] [2024-11-19 14:00:01,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:01,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:01,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:01,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955937913] [2024-11-19 14:00:01,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955937913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:01,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:00:01,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:00:01,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660391085] [2024-11-19 14:00:01,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:01,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:00:01,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:01,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:00:01,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:00:02,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 121 [2024-11-19 14:00:02,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 120 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:02,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:02,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 121 [2024-11-19 14:00:02,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:02,567 INFO L124 PetriNetUnfolderBase]: 589/1526 cut-off events. [2024-11-19 14:00:02,567 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 14:00:02,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 1526 events. 589/1526 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 9488 event pairs, 0 based on Foata normal form. 334/1789 useless extension candidates. Maximal degree in co-relation 2678. Up to 1120 conditions per place. [2024-11-19 14:00:02,589 INFO L140 encePairwiseOnDemand]: 94/121 looper letters, 91 selfloop transitions, 3 changer transitions 0/140 dead transitions. [2024-11-19 14:00:02,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 140 transitions, 475 flow [2024-11-19 14:00:02,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:00:02,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:00:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 326 transitions. [2024-11-19 14:00:02,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6735537190082644 [2024-11-19 14:00:02,609 INFO L175 Difference]: Start difference. First operand has 101 places, 120 transitions, 247 flow. Second operand 4 states and 326 transitions. [2024-11-19 14:00:02,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 140 transitions, 475 flow [2024-11-19 14:00:02,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 140 transitions, 475 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:00:02,623 INFO L231 Difference]: Finished difference. Result has 103 places, 97 transitions, 211 flow [2024-11-19 14:00:02,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=103, PETRI_TRANSITIONS=97} [2024-11-19 14:00:02,629 INFO L277 CegarLoopForPetriNet]: 101 programPoint places, 2 predicate places. [2024-11-19 14:00:02,632 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 211 flow [2024-11-19 14:00:02,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:02,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:02,633 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 14:00:02,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:00:02,633 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:00:02,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1152300947, now seen corresponding path program 1 times [2024-11-19 14:00:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:02,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371447752] [2024-11-19 14:00:02,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:02,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:00:02,689 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:00:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:00:02,755 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:00:02,755 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 14:00:02,758 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-11-19 14:00:02,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2024-11-19 14:00:02,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2024-11-19 14:00:02,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2024-11-19 14:00:02,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2024-11-19 14:00:02,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2024-11-19 14:00:02,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2024-11-19 14:00:02,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2024-11-19 14:00:02,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2024-11-19 14:00:02,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2024-11-19 14:00:02,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2024-11-19 14:00:02,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2024-11-19 14:00:02,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2024-11-19 14:00:02,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2024-11-19 14:00:02,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2024-11-19 14:00:02,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2024-11-19 14:00:02,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2024-11-19 14:00:02,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2024-11-19 14:00:02,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2024-11-19 14:00:02,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2024-11-19 14:00:02,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2024-11-19 14:00:02,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 14:00:02,765 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 14:00:02,769 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 14:00:02,769 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 14:00:02,807 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 14:00:02,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 184 transitions, 384 flow [2024-11-19 14:00:02,869 INFO L124 PetriNetUnfolderBase]: 57/295 cut-off events. [2024-11-19 14:00:02,870 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-19 14:00:02,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 295 events. 57/295 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1415 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 182. Up to 9 conditions per place. [2024-11-19 14:00:02,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 184 transitions, 384 flow [2024-11-19 14:00:02,880 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 184 transitions, 384 flow [2024-11-19 14:00:02,882 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:00:02,885 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;@675443f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:00:02,885 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-19 14:00:02,890 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:00:02,890 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-19 14:00:02,890 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:00:02,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:02,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 14:00:02,891 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-19 14:00:02,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:02,896 INFO L85 PathProgramCache]: Analyzing trace with hash 802895537, now seen corresponding path program 1 times [2024-11-19 14:00:02,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:02,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141952853] [2024-11-19 14:00:02,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:02,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:02,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:02,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141952853] [2024-11-19 14:00:02,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141952853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:02,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:00:02,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:00:02,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73596770] [2024-11-19 14:00:02,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:02,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:00:02,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:02,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:00:02,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:00:02,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 184 [2024-11-19 14:00:03,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 184 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:03,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:03,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 184 [2024-11-19 14:00:03,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:09,508 INFO L124 PetriNetUnfolderBase]: 28423/59919 cut-off events. [2024-11-19 14:00:09,508 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2024-11-19 14:00:09,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103660 conditions, 59919 events. 28423/59919 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 610608 event pairs, 21714 based on Foata normal form. 12694/67776 useless extension candidates. Maximal degree in co-relation 45518. Up to 43557 conditions per place. [2024-11-19 14:00:09,915 INFO L140 encePairwiseOnDemand]: 145/184 looper letters, 119 selfloop transitions, 3 changer transitions 0/196 dead transitions. [2024-11-19 14:00:09,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 196 transitions, 652 flow [2024-11-19 14:00:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:00:09,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:00:09,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 478 transitions. [2024-11-19 14:00:09,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6494565217391305 [2024-11-19 14:00:09,921 INFO L175 Difference]: Start difference. First operand has 153 places, 184 transitions, 384 flow. Second operand 4 states and 478 transitions. [2024-11-19 14:00:09,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 196 transitions, 652 flow [2024-11-19 14:00:09,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 196 transitions, 652 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:00:09,931 INFO L231 Difference]: Finished difference. Result has 158 places, 153 transitions, 342 flow [2024-11-19 14:00:09,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=158, PETRI_TRANSITIONS=153} [2024-11-19 14:00:09,933 INFO L277 CegarLoopForPetriNet]: 153 programPoint places, 5 predicate places. [2024-11-19 14:00:09,933 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 153 transitions, 342 flow [2024-11-19 14:00:09,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:09,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:09,934 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:00:09,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 14:00:09,935 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-19 14:00:09,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:09,939 INFO L85 PathProgramCache]: Analyzing trace with hash 126458643, now seen corresponding path program 1 times [2024-11-19 14:00:09,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:09,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594268539] [2024-11-19 14:00:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:09,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:10,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:10,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594268539] [2024-11-19 14:00:10,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594268539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:10,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:00:10,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:00:10,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268779416] [2024-11-19 14:00:10,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:10,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:00:10,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:10,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:00:10,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:00:10,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 184 [2024-11-19 14:00:10,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 153 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:10,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:10,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 184 [2024-11-19 14:00:10,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:17,948 INFO L124 PetriNetUnfolderBase]: 49861/100493 cut-off events. [2024-11-19 14:00:17,948 INFO L125 PetriNetUnfolderBase]: For 1286/2368 co-relation queries the response was YES. [2024-11-19 14:00:18,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177891 conditions, 100493 events. 49861/100493 cut-off events. For 1286/2368 co-relation queries the response was YES. Maximal size of possible extension queue 1664. Compared 1078542 event pairs, 12342 based on Foata normal form. 1024/95082 useless extension candidates. Maximal degree in co-relation 177716. Up to 42027 conditions per place. [2024-11-19 14:00:18,588 INFO L140 encePairwiseOnDemand]: 173/184 looper letters, 234 selfloop transitions, 16 changer transitions 0/326 dead transitions. [2024-11-19 14:00:18,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 326 transitions, 1228 flow [2024-11-19 14:00:18,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:00:18,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:00:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 626 transitions. [2024-11-19 14:00:18,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6804347826086956 [2024-11-19 14:00:18,590 INFO L175 Difference]: Start difference. First operand has 158 places, 153 transitions, 342 flow. Second operand 5 states and 626 transitions. [2024-11-19 14:00:18,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 326 transitions, 1228 flow [2024-11-19 14:00:18,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 326 transitions, 1224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:00:18,603 INFO L231 Difference]: Finished difference. Result has 165 places, 168 transitions, 466 flow [2024-11-19 14:00:18,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=466, PETRI_PLACES=165, PETRI_TRANSITIONS=168} [2024-11-19 14:00:18,605 INFO L277 CegarLoopForPetriNet]: 153 programPoint places, 12 predicate places. [2024-11-19 14:00:18,605 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 168 transitions, 466 flow [2024-11-19 14:00:18,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:18,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:18,606 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 14:00:18,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:00:18,607 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-19 14:00:18,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:18,608 INFO L85 PathProgramCache]: Analyzing trace with hash 109625604, now seen corresponding path program 1 times [2024-11-19 14:00:18,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:18,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065926702] [2024-11-19 14:00:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:18,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:18,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:18,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065926702] [2024-11-19 14:00:18,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065926702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:00:18,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326284523] [2024-11-19 14:00:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:18,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:00:18,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:00:18,709 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:00:18,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:00:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:18,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:00:18,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:00:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:18,866 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:00:18,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326284523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:18,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:00:18,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:00:18,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001954546] [2024-11-19 14:00:18,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:18,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:00:18,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:18,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:00:18,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:00:18,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 184 [2024-11-19 14:00:18,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 168 transitions, 466 flow. Second operand has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:18,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:18,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 184 [2024-11-19 14:00:18,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:27,333 INFO L124 PetriNetUnfolderBase]: 49086/97946 cut-off events. [2024-11-19 14:00:27,333 INFO L125 PetriNetUnfolderBase]: For 20624/20656 co-relation queries the response was YES. [2024-11-19 14:00:27,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192354 conditions, 97946 events. 49086/97946 cut-off events. For 20624/20656 co-relation queries the response was YES. Maximal size of possible extension queue 1605. Compared 1044004 event pairs, 11912 based on Foata normal form. 540/93084 useless extension candidates. Maximal degree in co-relation 90441. Up to 68413 conditions per place. [2024-11-19 14:00:27,994 INFO L140 encePairwiseOnDemand]: 179/184 looper letters, 224 selfloop transitions, 6 changer transitions 0/304 dead transitions. [2024-11-19 14:00:27,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 304 transitions, 1280 flow [2024-11-19 14:00:27,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:00:27,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:00:27,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 650 transitions. [2024-11-19 14:00:27,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5887681159420289 [2024-11-19 14:00:27,997 INFO L175 Difference]: Start difference. First operand has 165 places, 168 transitions, 466 flow. Second operand 6 states and 650 transitions. [2024-11-19 14:00:27,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 304 transitions, 1280 flow [2024-11-19 14:00:28,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 304 transitions, 1280 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:00:28,017 INFO L231 Difference]: Finished difference. Result has 169 places, 167 transitions, 474 flow [2024-11-19 14:00:28,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=474, PETRI_PLACES=169, PETRI_TRANSITIONS=167} [2024-11-19 14:00:28,019 INFO L277 CegarLoopForPetriNet]: 153 programPoint places, 16 predicate places. [2024-11-19 14:00:28,019 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 167 transitions, 474 flow [2024-11-19 14:00:28,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:28,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:28,020 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-19 14:00:28,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:00:28,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:00:28,221 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-19 14:00:28,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:28,222 INFO L85 PathProgramCache]: Analyzing trace with hash -896572697, now seen corresponding path program 1 times [2024-11-19 14:00:28,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:28,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279410511] [2024-11-19 14:00:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:28,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:28,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:00:28,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:28,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279410511] [2024-11-19 14:00:28,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279410511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:28,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:00:28,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:00:28,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976113558] [2024-11-19 14:00:28,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:28,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:00:28,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:28,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:00:28,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:00:28,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 184 [2024-11-19 14:00:28,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 167 transitions, 474 flow. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:28,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:28,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 184 [2024-11-19 14:00:28,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:00:36,822 INFO L124 PetriNetUnfolderBase]: 48034/98221 cut-off events. [2024-11-19 14:00:36,822 INFO L125 PetriNetUnfolderBase]: For 23663/23696 co-relation queries the response was YES. [2024-11-19 14:00:37,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191466 conditions, 98221 events. 48034/98221 cut-off events. For 23663/23696 co-relation queries the response was YES. Maximal size of possible extension queue 1609. Compared 1055393 event pairs, 28268 based on Foata normal form. 514/92867 useless extension candidates. Maximal degree in co-relation 148484. Up to 69693 conditions per place. [2024-11-19 14:00:37,434 INFO L140 encePairwiseOnDemand]: 179/184 looper letters, 181 selfloop transitions, 6 changer transitions 0/261 dead transitions. [2024-11-19 14:00:37,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 261 transitions, 1098 flow [2024-11-19 14:00:37,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:00:37,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:00:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 457 transitions. [2024-11-19 14:00:37,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6209239130434783 [2024-11-19 14:00:37,437 INFO L175 Difference]: Start difference. First operand has 169 places, 167 transitions, 474 flow. Second operand 4 states and 457 transitions. [2024-11-19 14:00:37,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 261 transitions, 1098 flow [2024-11-19 14:00:37,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 261 transitions, 1082 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-19 14:00:37,499 INFO L231 Difference]: Finished difference. Result has 167 places, 167 transitions, 474 flow [2024-11-19 14:00:37,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=474, PETRI_PLACES=167, PETRI_TRANSITIONS=167} [2024-11-19 14:00:37,501 INFO L277 CegarLoopForPetriNet]: 153 programPoint places, 14 predicate places. [2024-11-19 14:00:37,502 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 167 transitions, 474 flow [2024-11-19 14:00:37,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:37,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:37,503 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-19 14:00:37,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:00:37,503 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-19 14:00:37,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:37,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1682092890, now seen corresponding path program 1 times [2024-11-19 14:00:37,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:37,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774020982] [2024-11-19 14:00:37,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:37,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:00:37,532 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:00:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:00:37,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:00:37,557 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 14:00:37,557 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-11-19 14:00:37,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2024-11-19 14:00:37,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2024-11-19 14:00:37,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2024-11-19 14:00:37,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2024-11-19 14:00:37,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2024-11-19 14:00:37,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2024-11-19 14:00:37,559 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2024-11-19 14:00:37,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2024-11-19 14:00:37,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2024-11-19 14:00:37,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2024-11-19 14:00:37,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2024-11-19 14:00:37,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2024-11-19 14:00:37,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2024-11-19 14:00:37,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2024-11-19 14:00:37,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2024-11-19 14:00:37,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2024-11-19 14:00:37,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2024-11-19 14:00:37,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2024-11-19 14:00:37,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2024-11-19 14:00:37,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2024-11-19 14:00:37,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2024-11-19 14:00:37,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2024-11-19 14:00:37,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2024-11-19 14:00:37,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2024-11-19 14:00:37,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2024-11-19 14:00:37,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2024-11-19 14:00:37,562 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2024-11-19 14:00:37,562 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2024-11-19 14:00:37,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:00:37,562 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-19 14:00:37,564 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 14:00:37,564 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 14:00:37,607 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 14:00:37,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 247 transitions, 521 flow [2024-11-19 14:00:37,657 INFO L124 PetriNetUnfolderBase]: 84/442 cut-off events. [2024-11-19 14:00:37,657 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-19 14:00:37,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 442 events. 84/442 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2268 event pairs, 1 based on Foata normal form. 0/310 useless extension candidates. Maximal degree in co-relation 310. Up to 12 conditions per place. [2024-11-19 14:00:37,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 247 transitions, 521 flow [2024-11-19 14:00:37,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 247 transitions, 521 flow [2024-11-19 14:00:37,670 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:00:37,670 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;@675443f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:00:37,670 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-11-19 14:00:37,672 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:00:37,672 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-19 14:00:37,673 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:00:37,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:00:37,673 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 14:00:37,673 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-19 14:00:37,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:00:37,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1038667493, now seen corresponding path program 1 times [2024-11-19 14:00:37,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:00:37,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320677075] [2024-11-19 14:00:37,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:00:37,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:00:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:00:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:00:37,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:00:37,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320677075] [2024-11-19 14:00:37,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320677075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:00:37,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:00:37,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:00:37,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234486593] [2024-11-19 14:00:37,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:00:37,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:00:37,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:00:37,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:00:37,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:00:37,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 247 [2024-11-19 14:00:37,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 247 transitions, 521 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:00:37,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:00:37,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 247 [2024-11-19 14:00:37,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand