./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:35:15,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:35:15,571 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:35:15,577 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:35:15,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:35:15,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:35:15,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:35:15,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:35:15,610 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:35:15,610 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:35:15,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:35:15,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:35:15,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:35:15,612 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:35:15,612 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:35:15,613 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:35:15,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:35:15,614 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:35:15,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:35:15,615 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:35:15,615 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:35:15,619 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:35:15,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:35:15,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:35:15,620 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:35:15,620 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:35:15,621 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:35:15,621 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:35:15,621 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:35:15,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:35:15,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:35:15,622 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:35:15,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:35:15,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:35:15,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:35:15,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:35:15,623 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:35:15,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:35:15,624 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:35:15,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:35:15,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:35:15,625 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:35:15,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2024-11-16 19:35:15,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:35:15,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:35:15,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:35:15,951 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:35:15,952 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:35:15,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2024-11-16 19:35:17,565 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:35:17,840 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:35:17,840 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2024-11-16 19:35:17,861 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26f3bf30b/87f101e3a7554f5f81e59823dd4b54ff/FLAG45502371d [2024-11-16 19:35:17,878 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26f3bf30b/87f101e3a7554f5f81e59823dd4b54ff [2024-11-16 19:35:17,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:35:17,883 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:35:17,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:35:17,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:35:17,911 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:35:17,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:35:17" (1/1) ... [2024-11-16 19:35:17,915 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b3300b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:35:17, skipping insertion in model container [2024-11-16 19:35:17,915 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:35:17" (1/1) ... [2024-11-16 19:35:17,973 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:35:18,482 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2024-11-16 19:35:18,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:35:18,528 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:35:18,592 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2024-11-16 19:35:18,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:35:18,656 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:35:18,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:35:18 WrapperNode [2024-11-16 19:35:18,657 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:35:18,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:35:18,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:35:18,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:35:18,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:35:18" (1/1) ... [2024-11-16 19:35:18,686 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:35:18" (1/1) ... [2024-11-16 19:35:18,714 INFO L138 Inliner]: procedures = 243, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 260 [2024-11-16 19:35:18,714 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:35:18,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:35:18,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:35:18,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:35:18,726 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:35:18" (1/1) ... [2024-11-16 19:35:18,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:35:18" (1/1) ... [2024-11-16 19:35:18,731 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:35:18" (1/1) ... [2024-11-16 19:35:18,756 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 1, 8]. 73 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 8]. The 0 writes are split as follows [0, 0, 0]. [2024-11-16 19:35:18,757 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:35:18" (1/1) ... [2024-11-16 19:35:18,757 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:35:18" (1/1) ... [2024-11-16 19:35:18,767 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:35:18" (1/1) ... [2024-11-16 19:35:18,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:35:18" (1/1) ... [2024-11-16 19:35:18,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:35:18" (1/1) ... [2024-11-16 19:35:18,773 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:35:18" (1/1) ... [2024-11-16 19:35:18,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:35:18,778 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:35:18,778 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:35:18,778 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:35:18,779 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:35:18" (1/1) ... [2024-11-16 19:35:18,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:35:18,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:35:18,827 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) [2024-11-16 19:35:18,833 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 [2024-11-16 19:35:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-16 19:35:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-16 19:35:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-16 19:35:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-16 19:35:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:35:18,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:35:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:35:18,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:35:18,883 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-16 19:35:18,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:35:18,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:35:18,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:35:18,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 19:35:18,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:35:18,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:35:18,886 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:35:19,082 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:35:19,084 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:35:19,519 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:35:19,520 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:35:20,214 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:35:20,215 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:35:20,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:35:20 BoogieIcfgContainer [2024-11-16 19:35:20,216 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:35:20,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:35:20,220 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:35:20,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:35:20,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:35:17" (1/3) ... [2024-11-16 19:35:20,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67dd5ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:35:20, skipping insertion in model container [2024-11-16 19:35:20,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:35:18" (2/3) ... [2024-11-16 19:35:20,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67dd5ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:35:20, skipping insertion in model container [2024-11-16 19:35:20,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:35:20" (3/3) ... [2024-11-16 19:35:20,227 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2024-11-16 19:35:20,248 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:35:20,249 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:35:20,249 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:35:20,315 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-16 19:35:20,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 50 transitions, 114 flow [2024-11-16 19:35:20,433 INFO L124 PetriNetUnfolderBase]: 10/48 cut-off events. [2024-11-16 19:35:20,433 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:35:20,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 48 events. 10/48 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2024-11-16 19:35:20,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 50 transitions, 114 flow [2024-11-16 19:35:20,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 44 transitions, 100 flow [2024-11-16 19:35:20,454 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:35:20,463 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;@5ea56472, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:35:20,464 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-16 19:35:20,518 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:35:20,519 INFO L124 PetriNetUnfolderBase]: 8/43 cut-off events. [2024-11-16 19:35:20,519 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:35:20,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:35:20,520 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:35:20,521 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:35:20,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:35:20,528 INFO L85 PathProgramCache]: Analyzing trace with hash -438539468, now seen corresponding path program 1 times [2024-11-16 19:35:20,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:35:20,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520911497] [2024-11-16 19:35:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:35:20,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:35:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:35:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:35:21,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:35:21,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520911497] [2024-11-16 19:35:21,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520911497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:35:21,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:35:21,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:35:21,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944955879] [2024-11-16 19:35:21,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:35:21,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:35:21,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:35:21,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:35:21,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:35:21,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-16 19:35:21,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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) [2024-11-16 19:35:21,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:35:21,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-16 19:35:21,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:35:21,650 INFO L124 PetriNetUnfolderBase]: 264/538 cut-off events. [2024-11-16 19:35:21,650 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-16 19:35:21,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 538 events. 264/538 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2677 event pairs, 167 based on Foata normal form. 88/521 useless extension candidates. Maximal degree in co-relation 914. Up to 412 conditions per place. [2024-11-16 19:35:21,658 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 24 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2024-11-16 19:35:21,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 140 flow [2024-11-16 19:35:21,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:35:21,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:35:21,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 68 transitions. [2024-11-16 19:35:21,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-11-16 19:35:21,677 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 100 flow. Second operand 2 states and 68 transitions. [2024-11-16 19:35:21,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 140 flow [2024-11-16 19:35:21,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 132 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:35:21,684 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 84 flow [2024-11-16 19:35:21,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=84, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2024-11-16 19:35:21,691 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-11-16 19:35:21,692 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 84 flow [2024-11-16 19:35:21,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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) [2024-11-16 19:35:21,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:35:21,692 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:35:21,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:35:21,693 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:35:21,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:35:21,693 INFO L85 PathProgramCache]: Analyzing trace with hash -311332983, now seen corresponding path program 1 times [2024-11-16 19:35:21,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:35:21,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117419184] [2024-11-16 19:35:21,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:35:21,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:35:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:35:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:35:22,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:35:22,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117419184] [2024-11-16 19:35:22,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117419184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:35:22,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:35:22,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:35:22,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077321418] [2024-11-16 19:35:22,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:35:22,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:35:22,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:35:22,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:35:22,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:35:22,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-11-16 19:35:22,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-16 19:35:22,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:35:22,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-11-16 19:35:22,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:35:22,380 INFO L124 PetriNetUnfolderBase]: 482/965 cut-off events. [2024-11-16 19:35:22,380 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:35:22,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1726 conditions, 965 events. 482/965 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4975 event pairs, 203 based on Foata normal form. 16/837 useless extension candidates. Maximal degree in co-relation 1723. Up to 474 conditions per place. [2024-11-16 19:35:22,389 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 40 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-16 19:35:22,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 57 transitions, 203 flow [2024-11-16 19:35:22,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:35:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:35:22,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-11-16 19:35:22,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-16 19:35:22,391 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 84 flow. Second operand 3 states and 100 transitions. [2024-11-16 19:35:22,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 57 transitions, 203 flow [2024-11-16 19:35:22,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 203 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:35:22,394 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 96 flow [2024-11-16 19:35:22,394 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2024-11-16 19:35:22,395 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-11-16 19:35:22,395 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 96 flow [2024-11-16 19:35:22,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-16 19:35:22,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:35:22,396 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-16 19:35:22,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:35:22,396 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:35:22,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:35:22,397 INFO L85 PathProgramCache]: Analyzing trace with hash 587831826, now seen corresponding path program 1 times [2024-11-16 19:35:22,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:35:22,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621554625] [2024-11-16 19:35:22,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:35:22,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:35:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:35:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:35:22,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:35:22,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621554625] [2024-11-16 19:35:22,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621554625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:35:22,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:35:22,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:35:22,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154394652] [2024-11-16 19:35:22,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:35:22,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:35:22,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:35:22,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:35:22,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:35:22,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-11-16 19:35:22,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2024-11-16 19:35:22,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:35:22,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-11-16 19:35:22,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:35:23,193 INFO L124 PetriNetUnfolderBase]: 787/1665 cut-off events. [2024-11-16 19:35:23,193 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2024-11-16 19:35:23,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3021 conditions, 1665 events. 787/1665 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10033 event pairs, 338 based on Foata normal form. 29/1500 useless extension candidates. Maximal degree in co-relation 3016. Up to 770 conditions per place. [2024-11-16 19:35:23,206 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 41 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-11-16 19:35:23,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 225 flow [2024-11-16 19:35:23,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:35:23,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:35:23,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-11-16 19:35:23,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.66 [2024-11-16 19:35:23,209 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 96 flow. Second operand 3 states and 99 transitions. [2024-11-16 19:35:23,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 225 flow [2024-11-16 19:35:23,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:35:23,212 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 106 flow [2024-11-16 19:35:23,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2024-11-16 19:35:23,213 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-11-16 19:35:23,214 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 106 flow [2024-11-16 19:35:23,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2024-11-16 19:35:23,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:35:23,215 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:35:23,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:35:23,215 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:35:23,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:35:23,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1468086728, now seen corresponding path program 1 times [2024-11-16 19:35:23,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:35:23,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894545988] [2024-11-16 19:35:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:35:23,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:35:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:35:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:35:23,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:35:23,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894545988] [2024-11-16 19:35:23,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894545988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:35:23,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545194409] [2024-11-16 19:35:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:35:23,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:35:23,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:35:23,593 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) [2024-11-16 19:35:23,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:35:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:35:24,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 19:35:24,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:35:24,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:35:24,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:35:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:35:24,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545194409] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:35:24,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:35:24,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 19:35:24,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693879680] [2024-11-16 19:35:24,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:35:24,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:35:24,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:35:24,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:35:24,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:35:24,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2024-11-16 19:35:24,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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) [2024-11-16 19:35:24,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:35:24,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2024-11-16 19:35:24,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:35:24,568 INFO L124 PetriNetUnfolderBase]: 1563/3109 cut-off events. [2024-11-16 19:35:24,569 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2024-11-16 19:35:24,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5907 conditions, 3109 events. 1563/3109 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18384 event pairs, 159 based on Foata normal form. 87/3008 useless extension candidates. Maximal degree in co-relation 5901. Up to 536 conditions per place. [2024-11-16 19:35:24,592 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 87 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2024-11-16 19:35:24,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 107 transitions, 454 flow [2024-11-16 19:35:24,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:35:24,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:35:24,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-11-16 19:35:24,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6633333333333333 [2024-11-16 19:35:24,595 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 106 flow. Second operand 6 states and 199 transitions. [2024-11-16 19:35:24,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 107 transitions, 454 flow [2024-11-16 19:35:24,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 107 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:35:24,601 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 144 flow [2024-11-16 19:35:24,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-11-16 19:35:24,603 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-11-16 19:35:24,635 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 144 flow [2024-11-16 19:35:24,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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) [2024-11-16 19:35:24,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:35:24,637 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-16 19:35:24,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:35:24,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:35:24,838 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:35:24,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:35:24,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1320139332, now seen corresponding path program 2 times [2024-11-16 19:35:24,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:35:24,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107579110] [2024-11-16 19:35:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:35:24,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:35:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:35:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-16 19:35:25,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:35:25,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107579110] [2024-11-16 19:35:25,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107579110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:35:25,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:35:25,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:35:25,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314637789] [2024-11-16 19:35:25,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:35:25,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:35:25,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:35:25,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:35:25,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:35:25,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-16 19:35:25,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:35:25,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:35:25,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-16 19:35:25,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:35:25,587 INFO L124 PetriNetUnfolderBase]: 776/2020 cut-off events. [2024-11-16 19:35:25,587 INFO L125 PetriNetUnfolderBase]: For 774/774 co-relation queries the response was YES. [2024-11-16 19:35:25,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 2020 events. 776/2020 cut-off events. For 774/774 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 11645 event pairs, 343 based on Foata normal form. 128/2002 useless extension candidates. Maximal degree in co-relation 3990. Up to 650 conditions per place. [2024-11-16 19:35:25,603 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 34 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2024-11-16 19:35:25,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 292 flow [2024-11-16 19:35:25,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:35:25,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:35:25,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-11-16 19:35:25,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6533333333333333 [2024-11-16 19:35:25,607 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 144 flow. Second operand 3 states and 98 transitions. [2024-11-16 19:35:25,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 292 flow [2024-11-16 19:35:25,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 276 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-16 19:35:25,612 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 152 flow [2024-11-16 19:35:25,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-11-16 19:35:25,614 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-11-16 19:35:25,615 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 152 flow [2024-11-16 19:35:25,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:35:25,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:35:25,616 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-16 19:35:25,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:35:25,616 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:35:25,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:35:25,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1250204038, now seen corresponding path program 3 times [2024-11-16 19:35:25,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:35:25,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144100927] [2024-11-16 19:35:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:35:25,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:35:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:35:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-16 19:35:25,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:35:25,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144100927] [2024-11-16 19:35:25,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144100927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:35:25,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146537914] [2024-11-16 19:35:25,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:35:25,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:35:25,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:35:25,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:35:25,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:35:26,419 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 19:35:26,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:35:26,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 19:35:26,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:35:26,467 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-16 19:35:26,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:35:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-16 19:35:26,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146537914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:35:26,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:35:26,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 19:35:26,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679862662] [2024-11-16 19:35:26,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:35:26,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:35:26,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:35:26,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:35:26,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:35:26,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2024-11-16 19:35:26,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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) [2024-11-16 19:35:26,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:35:26,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2024-11-16 19:35:26,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:35:27,109 INFO L124 PetriNetUnfolderBase]: 1957/4664 cut-off events. [2024-11-16 19:35:27,109 INFO L125 PetriNetUnfolderBase]: For 1900/1906 co-relation queries the response was YES. [2024-11-16 19:35:27,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10223 conditions, 4664 events. 1957/4664 cut-off events. For 1900/1906 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 30855 event pairs, 319 based on Foata normal form. 168/4425 useless extension candidates. Maximal degree in co-relation 10213. Up to 719 conditions per place. [2024-11-16 19:35:27,147 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 101 selfloop transitions, 6 changer transitions 0/122 dead transitions. [2024-11-16 19:35:27,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 122 transitions, 664 flow [2024-11-16 19:35:27,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:35:27,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:35:27,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-11-16 19:35:27,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6766666666666666 [2024-11-16 19:35:27,149 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 152 flow. Second operand 6 states and 203 transitions. [2024-11-16 19:35:27,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 122 transitions, 664 flow [2024-11-16 19:35:27,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 122 transitions, 628 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:35:27,161 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 184 flow [2024-11-16 19:35:27,162 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2024-11-16 19:35:27,163 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-11-16 19:35:27,164 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 184 flow [2024-11-16 19:35:27,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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) [2024-11-16 19:35:27,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:35:27,165 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:35:27,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 19:35:27,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 19:35:27,370 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:35:27,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:35:27,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1643815831, now seen corresponding path program 4 times [2024-11-16 19:35:27,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:35:27,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016167478] [2024-11-16 19:35:27,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:35:27,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:35:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:35:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-16 19:35:27,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:35:27,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016167478] [2024-11-16 19:35:27,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016167478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:35:27,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182097605] [2024-11-16 19:35:27,853 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:35:27,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:35:27,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:35:27,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:35:27,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:35:28,383 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:35:28,383 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:35:28,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 19:35:28,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:35:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-16 19:35:28,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:35:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-16 19:35:28,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182097605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:35:28,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:35:28,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 4 [2024-11-16 19:35:28,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088951116] [2024-11-16 19:35:28,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:35:28,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:35:28,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:35:28,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:35:28,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:35:28,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-16 19:35:28,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2024-11-16 19:35:28,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:35:28,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-16 19:35:28,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:35:28,748 INFO L124 PetriNetUnfolderBase]: 599/1565 cut-off events. [2024-11-16 19:35:28,749 INFO L125 PetriNetUnfolderBase]: For 1138/1150 co-relation queries the response was YES. [2024-11-16 19:35:28,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3627 conditions, 1565 events. 599/1565 cut-off events. For 1138/1150 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 7263 event pairs, 189 based on Foata normal form. 0/1537 useless extension candidates. Maximal degree in co-relation 3613. Up to 578 conditions per place. [2024-11-16 19:35:28,760 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 52 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-11-16 19:35:28,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 386 flow [2024-11-16 19:35:28,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:35:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:35:28,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-11-16 19:35:28,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-11-16 19:35:28,762 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 184 flow. Second operand 4 states and 111 transitions. [2024-11-16 19:35:28,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 386 flow [2024-11-16 19:35:28,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 69 transitions, 371 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-16 19:35:28,767 INFO L231 Difference]: Finished difference. Result has 66 places, 48 transitions, 195 flow [2024-11-16 19:35:28,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2024-11-16 19:35:28,768 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-11-16 19:35:28,768 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 195 flow [2024-11-16 19:35:28,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2024-11-16 19:35:28,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:35:28,768 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:35:28,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 19:35:28,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:35:28,973 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:35:28,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:35:28,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1265981139, now seen corresponding path program 5 times [2024-11-16 19:35:28,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:35:28,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848980280] [2024-11-16 19:35:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:35:28,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:35:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:35:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 6 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:35:29,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:35:29,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848980280] [2024-11-16 19:35:29,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848980280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:35:29,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952321116] [2024-11-16 19:35:29,884 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:35:29,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:35:29,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:35:29,886 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:35:29,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 19:35:30,367 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-16 19:35:30,367 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:35:30,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 19:35:30,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:35:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 6 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:35:30,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:35:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:35:31,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952321116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:35:31,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:35:31,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 31 [2024-11-16 19:35:31,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048031672] [2024-11-16 19:35:31,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:35:31,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 19:35:31,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:35:31,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 19:35:31,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=897, Unknown=0, NotChecked=0, Total=992 [2024-11-16 19:35:31,784 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-11-16 19:35:31,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 195 flow. Second operand has 32 states, 32 states have (on average 21.09375) internal successors, (675), 32 states have internal predecessors, (675), 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) [2024-11-16 19:35:31,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:35:31,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-11-16 19:35:31,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:35:33,038 INFO L124 PetriNetUnfolderBase]: 635/1639 cut-off events. [2024-11-16 19:35:33,039 INFO L125 PetriNetUnfolderBase]: For 1269/1278 co-relation queries the response was YES. [2024-11-16 19:35:33,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3987 conditions, 1639 events. 635/1639 cut-off events. For 1269/1278 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 7688 event pairs, 64 based on Foata normal form. 30/1641 useless extension candidates. Maximal degree in co-relation 3970. Up to 247 conditions per place. [2024-11-16 19:35:33,048 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 0 selfloop transitions, 0 changer transitions 138/138 dead transitions. [2024-11-16 19:35:33,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 138 transitions, 777 flow [2024-11-16 19:35:33,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:35:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:35:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 324 transitions. [2024-11-16 19:35:33,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-11-16 19:35:33,050 INFO L175 Difference]: Start difference. First operand has 66 places, 48 transitions, 195 flow. Second operand 12 states and 324 transitions. [2024-11-16 19:35:33,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 138 transitions, 777 flow [2024-11-16 19:35:33,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 138 transitions, 745 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:35:33,057 INFO L231 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2024-11-16 19:35:33,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2024-11-16 19:35:33,058 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-11-16 19:35:33,059 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2024-11-16 19:35:33,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 21.09375) internal successors, (675), 32 states have internal predecessors, (675), 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) [2024-11-16 19:35:33,063 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-16 19:35:33,064 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-16 19:35:33,064 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-16 19:35:33,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 19:35:33,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:35:33,265 INFO L407 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2024-11-16 19:35:33,267 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-16 19:35:33,267 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 19:35:33,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:35:33 BasicIcfg [2024-11-16 19:35:33,272 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 19:35:33,273 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 19:35:33,273 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 19:35:33,273 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 19:35:33,274 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:35:20" (3/4) ... [2024-11-16 19:35:33,276 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 19:35:33,279 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-16 19:35:33,280 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-16 19:35:33,290 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 142 nodes and edges [2024-11-16 19:35:33,291 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 69 nodes and edges [2024-11-16 19:35:33,291 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2024-11-16 19:35:33,291 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-16 19:35:33,292 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-16 19:35:33,293 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-16 19:35:33,293 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 19:35:33,408 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 19:35:33,409 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 19:35:33,409 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 19:35:33,409 INFO L158 Benchmark]: Toolchain (without parser) took 15526.82ms. Allocated memory was 155.2MB in the beginning and 618.7MB in the end (delta: 463.5MB). Free memory was 86.8MB in the beginning and 348.4MB in the end (delta: -261.6MB). Peak memory consumption was 202.7MB. Max. memory is 16.1GB. [2024-11-16 19:35:33,410 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 19:35:33,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 771.94ms. Allocated memory is still 155.2MB. Free memory was 86.6MB in the beginning and 102.4MB in the end (delta: -15.9MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2024-11-16 19:35:33,410 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.55ms. Allocated memory is still 155.2MB. Free memory was 102.4MB in the beginning and 99.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 19:35:33,411 INFO L158 Benchmark]: Boogie Preprocessor took 61.79ms. Allocated memory is still 155.2MB. Free memory was 99.3MB in the beginning and 95.6MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 19:35:33,411 INFO L158 Benchmark]: IcfgBuilder took 1438.50ms. Allocated memory was 155.2MB in the beginning and 201.3MB in the end (delta: 46.1MB). Free memory was 95.6MB in the beginning and 113.9MB in the end (delta: -18.3MB). Peak memory consumption was 85.0MB. Max. memory is 16.1GB. [2024-11-16 19:35:33,411 INFO L158 Benchmark]: TraceAbstraction took 13053.77ms. Allocated memory was 201.3MB in the beginning and 618.7MB in the end (delta: 417.3MB). Free memory was 112.9MB in the beginning and 355.9MB in the end (delta: -243.0MB). Peak memory consumption was 173.4MB. Max. memory is 16.1GB. [2024-11-16 19:35:33,412 INFO L158 Benchmark]: Witness Printer took 135.89ms. Allocated memory is still 618.7MB. Free memory was 355.9MB in the beginning and 348.4MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-16 19:35:33,415 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 771.94ms. Allocated memory is still 155.2MB. Free memory was 86.6MB in the beginning and 102.4MB in the end (delta: -15.9MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.55ms. Allocated memory is still 155.2MB. Free memory was 102.4MB in the beginning and 99.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.79ms. Allocated memory is still 155.2MB. Free memory was 99.3MB in the beginning and 95.6MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 1438.50ms. Allocated memory was 155.2MB in the beginning and 201.3MB in the end (delta: 46.1MB). Free memory was 95.6MB in the beginning and 113.9MB in the end (delta: -18.3MB). Peak memory consumption was 85.0MB. Max. memory is 16.1GB. * TraceAbstraction took 13053.77ms. Allocated memory was 201.3MB in the beginning and 618.7MB in the end (delta: 417.3MB). Free memory was 112.9MB in the beginning and 355.9MB in the end (delta: -243.0MB). Peak memory consumption was 173.4MB. Max. memory is 16.1GB. * Witness Printer took 135.89ms. Allocated memory is still 618.7MB. Free memory was 355.9MB in the beginning and 348.4MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 919]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 71 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.9s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 374 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 359 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2886 IncrementalHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 7 mSDtfsCounter, 2886 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 588 GetRequests, 541 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=7, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 682 NumberOfCodeBlocks, 663 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 945 ConstructedInterpolants, 0 QuantifiedInterpolants, 3450 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1937 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 624/1014 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-16 19:35:33,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE