./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/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 0.2.4-dev-a340643-m [2024-01-27 16:00:54,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:00:54,286 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:00:54,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:00:54,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:00:54,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:00:54,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:00:54,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:00:54,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:00:54,325 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:00:54,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:00:54,326 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:00:54,327 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:00:54,328 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:00:54,328 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:00:54,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:00:54,329 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:00:54,329 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:00:54,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:00:54,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:00:54,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:00:54,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:00:54,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:00:54,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:00:54,332 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:00:54,332 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:00:54,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:00:54,333 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:00:54,333 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:00:54,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:00:54,334 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:00:54,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:00:54,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:00:54,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:00:54,335 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:00:54,335 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:00:54,335 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:00:54,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:00:54,336 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:00:54,336 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:00:54,336 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:00:54,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:00:54,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:00:54,337 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2024-01-27 16:00:54,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:00:54,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:00:54,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:00:54,637 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:00:54,637 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:00:54,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2024-01-27 16:00:55,803 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:00:56,077 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:00:56,077 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2024-01-27 16:00:56,093 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c357909/efabc36d454e4c9791ef732e912d86f9/FLAGd90c1fcf0 [2024-01-27 16:00:56,105 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c357909/efabc36d454e4c9791ef732e912d86f9 [2024-01-27 16:00:56,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:00:56,110 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:00:56,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:00:56,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:00:56,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:00:56,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:00:56" (1/1) ... [2024-01-27 16:00:56,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79aca017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:56, skipping insertion in model container [2024-01-27 16:00:56,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:00:56" (1/1) ... [2024-01-27 16:00:56,162 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:00:56,539 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2024-01-27 16:00:56,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:00:56,562 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:00:56,603 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2024-01-27 16:00:56,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:00:56,666 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:00:56,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:56 WrapperNode [2024-01-27 16:00:56,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:00:56,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:00:56,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:00:56,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:00:56,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:56" (1/1) ... [2024-01-27 16:00:56,705 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:56" (1/1) ... [2024-01-27 16:00:56,733 INFO L138 Inliner]: procedures = 244, calls = 54, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2024-01-27 16:00:56,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:00:56,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:00:56,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:00:56,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:00:56,744 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:56" (1/1) ... [2024-01-27 16:00:56,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:56" (1/1) ... [2024-01-27 16:00:56,750 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:56" (1/1) ... [2024-01-27 16:00:56,774 INFO L175 MemorySlicer]: Split 31 memory accesses to 7 slices as follows [2, 1, 8, 8, 8, 2, 2]. 26 percent of accesses are in the largest equivalence class. The 27 initializations are split as follows [2, 1, 8, 8, 8, 0, 0]. The 2 writes are split as follows [0, 0, 0, 0, 0, 1, 1]. [2024-01-27 16:00:56,777 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:56" (1/1) ... [2024-01-27 16:00:56,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:56" (1/1) ... [2024-01-27 16:00:56,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:56" (1/1) ... [2024-01-27 16:00:56,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:56" (1/1) ... [2024-01-27 16:00:56,807 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:56" (1/1) ... [2024-01-27 16:00:56,815 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:56" (1/1) ... [2024-01-27 16:00:56,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:00:56,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:00:56,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:00:56,821 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:00:56,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:56" (1/1) ... [2024-01-27 16:00:56,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:00:56,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:00:56,857 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) [2024-01-27 16:00:56,882 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 [2024-01-27 16:00:56,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:00:56,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:00:56,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-01-27 16:00:56,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-01-27 16:00:56,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-01-27 16:00:56,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-01-27 16:00:56,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-01-27 16:00:56,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-01-27 16:00:56,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-01-27 16:00:56,911 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-27 16:00:56,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 16:00:56,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 16:00:56,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 16:00:56,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 16:00:56,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 16:00:56,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-27 16:00:56,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-01-27 16:00:56,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 16:00:56,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 16:00:56,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 16:00:56,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 16:00:56,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:00:56,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:00:56,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:00:56,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:00:56,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 16:00:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-27 16:00:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-01-27 16:00:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-27 16:00:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:00:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:00:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:00:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:00:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:00:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 16:00:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-27 16:00:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-01-27 16:00:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:00:56,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:00:56,922 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 16:00:57,088 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:00:57,090 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:00:57,311 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:00:57,311 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:00:57,495 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:00:57,495 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-27 16:00:57,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:00:57 BoogieIcfgContainer [2024-01-27 16:00:57,496 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:00:57,497 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:00:57,497 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:00:57,500 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:00:57,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:00:56" (1/3) ... [2024-01-27 16:00:57,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba9cd4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:00:57, skipping insertion in model container [2024-01-27 16:00:57,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:00:56" (2/3) ... [2024-01-27 16:00:57,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba9cd4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:00:57, skipping insertion in model container [2024-01-27 16:00:57,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:00:57" (3/3) ... [2024-01-27 16:00:57,502 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2024-01-27 16:00:57,509 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:00:57,518 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:00:57,519 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 16:00:57,519 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:00:57,556 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 16:00:57,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 94 flow [2024-01-27 16:00:57,639 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-01-27 16:00:57,639 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 16:00:57,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 6/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2024-01-27 16:00:57,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 94 flow [2024-01-27 16:00:57,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 34 transitions, 80 flow [2024-01-27 16:00:57,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:00:57,669 INFO L357 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, mHoare=true, 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;@270007ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:00:57,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-27 16:00:57,686 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:00:57,687 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-01-27 16:00:57,687 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 16:00:57,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:00:57,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:00:57,688 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:00:57,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:00:57,694 INFO L85 PathProgramCache]: Analyzing trace with hash 944210106, now seen corresponding path program 1 times [2024-01-27 16:00:57,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:00:57,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711901251] [2024-01-27 16:00:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:00:57,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:00:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:00:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:00:58,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:00:58,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711901251] [2024-01-27 16:00:58,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711901251] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:00:58,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:00:58,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:00:58,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488596740] [2024-01-27 16:00:58,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:00:58,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:00:58,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:00:58,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:00:58,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:00:58,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-01-27 16:00:58,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2024-01-27 16:00:58,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:00:58,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-01-27 16:00:58,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:00:58,327 INFO L124 PetriNetUnfolderBase]: 430/783 cut-off events. [2024-01-27 16:00:58,329 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-01-27 16:00:58,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 783 events. 430/783 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3541 event pairs, 167 based on Foata normal form. 18/788 useless extension candidates. Maximal degree in co-relation 1336. Up to 412 conditions per place. [2024-01-27 16:00:58,341 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 39 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2024-01-27 16:00:58,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 51 transitions, 199 flow [2024-01-27 16:00:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:00:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:00:58,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-01-27 16:00:58,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-01-27 16:00:58,353 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 80 flow. Second operand 3 states and 84 transitions. [2024-01-27 16:00:58,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 51 transitions, 199 flow [2024-01-27 16:00:58,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 189 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 16:00:58,363 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 84 flow [2024-01-27 16:00:58,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2024-01-27 16:00:58,368 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-01-27 16:00:58,368 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 84 flow [2024-01-27 16:00:58,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2024-01-27 16:00:58,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:00:58,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:00:58,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:00:58,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:00:58,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:00:58,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1931119106, now seen corresponding path program 1 times [2024-01-27 16:00:58,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:00:58,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825585104] [2024-01-27 16:00:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:00:58,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:00:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:00:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 16:00:58,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:00:58,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825585104] [2024-01-27 16:00:58,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825585104] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:00:58,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:00:58,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:00:58,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425790001] [2024-01-27 16:00:58,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:00:58,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:00:58,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:00:58,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:00:58,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:00:58,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-01-27 16:00:58,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-01-27 16:00:58,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:00:58,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-01-27 16:00:58,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:00:58,687 INFO L124 PetriNetUnfolderBase]: 784/1373 cut-off events. [2024-01-27 16:00:58,687 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2024-01-27 16:00:58,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2736 conditions, 1373 events. 784/1373 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6721 event pairs, 363 based on Foata normal form. 26/1387 useless extension candidates. Maximal degree in co-relation 969. Up to 744 conditions per place. [2024-01-27 16:00:58,694 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 41 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2024-01-27 16:00:58,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 53 transitions, 217 flow [2024-01-27 16:00:58,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:00:58,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:00:58,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-01-27 16:00:58,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-01-27 16:00:58,696 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 84 flow. Second operand 3 states and 84 transitions. [2024-01-27 16:00:58,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 53 transitions, 217 flow [2024-01-27 16:00:58,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 16:00:58,699 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 94 flow [2024-01-27 16:00:58,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2024-01-27 16:00:58,700 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-01-27 16:00:58,700 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 94 flow [2024-01-27 16:00:58,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-01-27 16:00:58,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:00:58,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:00:58,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:00:58,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:00:58,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:00:58,701 INFO L85 PathProgramCache]: Analyzing trace with hash 2007435854, now seen corresponding path program 1 times [2024-01-27 16:00:58,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:00:58,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959905270] [2024-01-27 16:00:58,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:00:58,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:00:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:00:58,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:00:58,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:00:58,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959905270] [2024-01-27 16:00:58,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959905270] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:00:58,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:00:58,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:00:58,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440993035] [2024-01-27 16:00:58,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:00:58,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:00:58,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:00:58,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:00:58,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:00:58,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-01-27 16:00:58,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-01-27 16:00:58,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:00:58,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-01-27 16:00:58,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:00:59,023 INFO L124 PetriNetUnfolderBase]: 441/931 cut-off events. [2024-01-27 16:00:59,024 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2024-01-27 16:00:59,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1930 conditions, 931 events. 441/931 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4524 event pairs, 189 based on Foata normal form. 64/994 useless extension candidates. Maximal degree in co-relation 600. Up to 388 conditions per place. [2024-01-27 16:00:59,028 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 31 selfloop transitions, 8 changer transitions 0/49 dead transitions. [2024-01-27 16:00:59,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 49 transitions, 218 flow [2024-01-27 16:00:59,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:00:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:00:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-01-27 16:00:59,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-01-27 16:00:59,033 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 94 flow. Second operand 3 states and 81 transitions. [2024-01-27 16:00:59,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 49 transitions, 218 flow [2024-01-27 16:00:59,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 49 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 16:00:59,036 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 108 flow [2024-01-27 16:00:59,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2024-01-27 16:00:59,038 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2024-01-27 16:00:59,038 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 108 flow [2024-01-27 16:00:59,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-01-27 16:00:59,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:00:59,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:00:59,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 16:00:59,039 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:00:59,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:00:59,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1290759006, now seen corresponding path program 2 times [2024-01-27 16:00:59,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:00:59,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125272271] [2024-01-27 16:00:59,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:00:59,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:00:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:00:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:00:59,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:00:59,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125272271] [2024-01-27 16:00:59,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125272271] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 16:00:59,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067944460] [2024-01-27 16:00:59,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 16:00:59,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:00:59,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:00:59,160 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) [2024-01-27 16:00:59,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-27 16:00:59,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 16:00:59,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:00:59,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 16:00:59,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:00:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:00:59,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:00:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:00:59,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067944460] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:00:59,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 16:00:59,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-01-27 16:00:59,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824447589] [2024-01-27 16:00:59,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 16:00:59,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 16:00:59,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:00:59,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 16:00:59,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-27 16:00:59,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-01-27 16:00:59,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 108 flow. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 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) [2024-01-27 16:00:59,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:00:59,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-01-27 16:00:59,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:00:59,897 INFO L124 PetriNetUnfolderBase]: 1447/2820 cut-off events. [2024-01-27 16:00:59,898 INFO L125 PetriNetUnfolderBase]: For 895/895 co-relation queries the response was YES. [2024-01-27 16:00:59,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6667 conditions, 2820 events. 1447/2820 cut-off events. For 895/895 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 15366 event pairs, 79 based on Foata normal form. 184/2996 useless extension candidates. Maximal degree in co-relation 1693. Up to 484 conditions per place. [2024-01-27 16:00:59,913 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 194 selfloop transitions, 33 changer transitions 0/236 dead transitions. [2024-01-27 16:00:59,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 236 transitions, 1238 flow [2024-01-27 16:00:59,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-27 16:00:59,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-27 16:00:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 449 transitions. [2024-01-27 16:00:59,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7015625 [2024-01-27 16:00:59,918 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 108 flow. Second operand 16 states and 449 transitions. [2024-01-27 16:00:59,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 236 transitions, 1238 flow [2024-01-27 16:00:59,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 236 transitions, 1130 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 16:00:59,929 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 374 flow [2024-01-27 16:00:59,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=374, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2024-01-27 16:00:59,931 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 29 predicate places. [2024-01-27 16:00:59,931 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 374 flow [2024-01-27 16:00:59,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 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) [2024-01-27 16:00:59,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:00:59,932 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:00:59,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-27 16:01:00,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:01:00,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:01:00,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:01:00,152 INFO L85 PathProgramCache]: Analyzing trace with hash 12954318, now seen corresponding path program 3 times [2024-01-27 16:01:00,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:01:00,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084859653] [2024-01-27 16:01:00,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:01:00,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:01:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:01:00,235 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-01-27 16:01:00,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:01:00,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084859653] [2024-01-27 16:01:00,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084859653] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 16:01:00,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821804442] [2024-01-27 16:01:00,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 16:01:00,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:01:00,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:01:00,238 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) [2024-01-27 16:01:00,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-27 16:01:00,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-27 16:01:00,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:01:00,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 16:01:00,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:01:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-01-27 16:01:00,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 16:01:00,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821804442] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:01:00,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 16:01:00,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-01-27 16:01:00,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898429013] [2024-01-27 16:01:00,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:01:00,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:01:00,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:01:00,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:01:00,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:01:00,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-01-27 16:01:00,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 374 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-01-27 16:01:00,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:01:00,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-01-27 16:01:00,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:01:00,738 INFO L124 PetriNetUnfolderBase]: 1526/3098 cut-off events. [2024-01-27 16:01:00,739 INFO L125 PetriNetUnfolderBase]: For 7866/7866 co-relation queries the response was YES. [2024-01-27 16:01:00,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9432 conditions, 3098 events. 1526/3098 cut-off events. For 7866/7866 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 17812 event pairs, 384 based on Foata normal form. 0/2925 useless extension candidates. Maximal degree in co-relation 7394. Up to 1405 conditions per place. [2024-01-27 16:01:00,762 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 86 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2024-01-27 16:01:00,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 807 flow [2024-01-27 16:01:00,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:01:00,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:01:00,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-01-27 16:01:00,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58125 [2024-01-27 16:01:00,764 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 374 flow. Second operand 4 states and 93 transitions. [2024-01-27 16:01:00,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 807 flow [2024-01-27 16:01:00,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 101 transitions, 728 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-01-27 16:01:00,791 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 355 flow [2024-01-27 16:01:00,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=355, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-01-27 16:01:00,792 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2024-01-27 16:01:00,792 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 355 flow [2024-01-27 16:01:00,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-01-27 16:01:00,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:01:00,793 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:01:00,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-27 16:01:01,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:01:01,010 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:01:01,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:01:01,010 INFO L85 PathProgramCache]: Analyzing trace with hash -731456480, now seen corresponding path program 4 times [2024-01-27 16:01:01,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:01:01,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560084020] [2024-01-27 16:01:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:01:01,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:01:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:01:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-01-27 16:01:01,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:01:01,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560084020] [2024-01-27 16:01:01,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560084020] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:01:01,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:01:01,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 16:01:01,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095692225] [2024-01-27 16:01:01,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:01:01,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:01:01,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:01:01,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:01:01,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:01:01,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-01-27 16:01:01,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 355 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-01-27 16:01:01,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:01:01,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-01-27 16:01:01,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:01:01,298 INFO L124 PetriNetUnfolderBase]: 1057/2193 cut-off events. [2024-01-27 16:01:01,298 INFO L125 PetriNetUnfolderBase]: For 6267/6267 co-relation queries the response was YES. [2024-01-27 16:01:01,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7193 conditions, 2193 events. 1057/2193 cut-off events. For 6267/6267 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 11911 event pairs, 285 based on Foata normal form. 0/2099 useless extension candidates. Maximal degree in co-relation 5982. Up to 1500 conditions per place. [2024-01-27 16:01:01,315 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 65 selfloop transitions, 3 changer transitions 3/82 dead transitions. [2024-01-27 16:01:01,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 82 transitions, 577 flow [2024-01-27 16:01:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:01:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:01:01,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-01-27 16:01:01,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-01-27 16:01:01,317 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 355 flow. Second operand 3 states and 78 transitions. [2024-01-27 16:01:01,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 82 transitions, 577 flow [2024-01-27 16:01:01,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 16:01:01,330 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 363 flow [2024-01-27 16:01:01,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2024-01-27 16:01:01,331 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 35 predicate places. [2024-01-27 16:01:01,331 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 363 flow [2024-01-27 16:01:01,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-01-27 16:01:01,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:01:01,331 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:01:01,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 16:01:01,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:01:01,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:01:01,332 INFO L85 PathProgramCache]: Analyzing trace with hash -298184354, now seen corresponding path program 5 times [2024-01-27 16:01:01,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:01:01,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405260811] [2024-01-27 16:01:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:01:01,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:01:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:01:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-01-27 16:01:01,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:01:01,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405260811] [2024-01-27 16:01:01,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405260811] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 16:01:01,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588131013] [2024-01-27 16:01:01,432 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-27 16:01:01,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:01:01,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:01:01,436 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) [2024-01-27 16:01:01,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-27 16:01:01,605 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-01-27 16:01:01,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:01:01,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-27 16:01:01,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:01:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-01-27 16:01:01,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:01:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-01-27 16:01:01,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588131013] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:01:01,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 16:01:01,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-01-27 16:01:01,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133415204] [2024-01-27 16:01:01,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 16:01:01,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:01:01,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:01:01,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:01:01,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:01:01,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-01-27 16:01:01,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 363 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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) [2024-01-27 16:01:01,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:01:01,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-01-27 16:01:01,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:01:02,143 INFO L124 PetriNetUnfolderBase]: 1355/2819 cut-off events. [2024-01-27 16:01:02,143 INFO L125 PetriNetUnfolderBase]: For 9122/9134 co-relation queries the response was YES. [2024-01-27 16:01:02,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8995 conditions, 2819 events. 1355/2819 cut-off events. For 9122/9134 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 15127 event pairs, 183 based on Foata normal form. 128/2931 useless extension candidates. Maximal degree in co-relation 6985. Up to 714 conditions per place. [2024-01-27 16:01:02,163 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 96 selfloop transitions, 15 changer transitions 1/126 dead transitions. [2024-01-27 16:01:02,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 126 transitions, 917 flow [2024-01-27 16:01:02,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:01:02,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:01:02,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-01-27 16:01:02,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6791666666666667 [2024-01-27 16:01:02,165 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 363 flow. Second operand 6 states and 163 transitions. [2024-01-27 16:01:02,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 126 transitions, 917 flow [2024-01-27 16:01:02,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 126 transitions, 903 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 16:01:02,181 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 420 flow [2024-01-27 16:01:02,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=420, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-01-27 16:01:02,182 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 41 predicate places. [2024-01-27 16:01:02,182 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 420 flow [2024-01-27 16:01:02,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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) [2024-01-27 16:01:02,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:01:02,183 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-01-27 16:01:02,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-27 16:01:02,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:01:02,402 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:01:02,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:01:02,403 INFO L85 PathProgramCache]: Analyzing trace with hash 578621360, now seen corresponding path program 6 times [2024-01-27 16:01:02,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:01:02,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879288665] [2024-01-27 16:01:02,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:01:02,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:01:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:01:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 4 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 16:01:03,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:01:03,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879288665] [2024-01-27 16:01:03,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879288665] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 16:01:03,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371275389] [2024-01-27 16:01:03,031 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-27 16:01:03,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:01:03,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:01:03,032 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) [2024-01-27 16:01:03,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-27 16:01:03,290 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-01-27 16:01:03,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:01:03,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 23 conjunts are in the unsatisfiable core [2024-01-27 16:01:03,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:01:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 4 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 16:01:03,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:01:03,931 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 16:01:03,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371275389] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:01:03,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 16:01:03,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 30 [2024-01-27 16:01:03,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834222976] [2024-01-27 16:01:03,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 16:01:03,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-01-27 16:01:03,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:01:03,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-01-27 16:01:03,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2024-01-27 16:01:04,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-01-27 16:01:04,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 420 flow. Second operand has 31 states, 31 states have (on average 15.129032258064516) internal successors, (469), 31 states have internal predecessors, (469), 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) [2024-01-27 16:01:04,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:01:04,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-01-27 16:01:04,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:01:05,086 INFO L124 PetriNetUnfolderBase]: 1263/2608 cut-off events. [2024-01-27 16:01:05,086 INFO L125 PetriNetUnfolderBase]: For 9003/9019 co-relation queries the response was YES. [2024-01-27 16:01:05,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8953 conditions, 2608 events. 1263/2608 cut-off events. For 9003/9019 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14194 event pairs, 81 based on Foata normal form. 76/2680 useless extension candidates. Maximal degree in co-relation 7455. Up to 549 conditions per place. [2024-01-27 16:01:05,099 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 0 selfloop transitions, 0 changer transitions 170/170 dead transitions. [2024-01-27 16:01:05,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 170 transitions, 1383 flow [2024-01-27 16:01:05,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 16:01:05,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 16:01:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 256 transitions. [2024-01-27 16:01:05,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-01-27 16:01:05,102 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 420 flow. Second operand 12 states and 256 transitions. [2024-01-27 16:01:05,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 170 transitions, 1383 flow [2024-01-27 16:01:05,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 170 transitions, 1304 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-01-27 16:01:05,121 INFO L231 Difference]: Finished difference. Result has 85 places, 0 transitions, 0 flow [2024-01-27 16:01:05,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=85, PETRI_TRANSITIONS=0} [2024-01-27 16:01:05,122 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 48 predicate places. [2024-01-27 16:01:05,122 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 0 transitions, 0 flow [2024-01-27 16:01:05,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 15.129032258064516) internal successors, (469), 31 states have internal predecessors, (469), 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) [2024-01-27 16:01:05,125 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-01-27 16:01:05,125 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-01-27 16:01:05,125 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-01-27 16:01:05,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-01-27 16:01:05,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:01:05,339 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2024-01-27 16:01:05,342 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 16:01:05,342 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 16:01:05,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 04:01:05 BasicIcfg [2024-01-27 16:01:05,347 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 16:01:05,347 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 16:01:05,347 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 16:01:05,347 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 16:01:05,348 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:00:57" (3/4) ... [2024-01-27 16:01:05,349 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 16:01:05,352 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-01-27 16:01:05,352 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-01-27 16:01:05,359 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 64 nodes and edges [2024-01-27 16:01:05,360 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-01-27 16:01:05,360 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-01-27 16:01:05,360 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-01-27 16:01:05,445 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 16:01:05,445 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 16:01:05,445 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 16:01:05,446 INFO L158 Benchmark]: Toolchain (without parser) took 9337.45ms. Allocated memory was 180.4MB in the beginning and 318.8MB in the end (delta: 138.4MB). Free memory was 144.4MB in the beginning and 125.6MB in the end (delta: 18.9MB). Peak memory consumption was 158.9MB. Max. memory is 16.1GB. [2024-01-27 16:01:05,446 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 121.6MB. Free memory was 83.2MB in the beginning and 83.1MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 16:01:05,446 INFO L158 Benchmark]: CACSL2BoogieTranslator took 556.63ms. Allocated memory is still 180.4MB. Free memory was 144.4MB in the beginning and 117.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-01-27 16:01:05,446 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.36ms. Allocated memory is still 180.4MB. Free memory was 116.6MB in the beginning and 114.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 16:01:05,447 INFO L158 Benchmark]: Boogie Preprocessor took 85.86ms. Allocated memory is still 180.4MB. Free memory was 114.5MB in the beginning and 111.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 16:01:05,447 INFO L158 Benchmark]: RCFGBuilder took 675.24ms. Allocated memory is still 180.4MB. Free memory was 111.7MB in the beginning and 64.1MB in the end (delta: 47.6MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2024-01-27 16:01:05,447 INFO L158 Benchmark]: TraceAbstraction took 7849.34ms. Allocated memory was 180.4MB in the beginning and 318.8MB in the end (delta: 138.4MB). Free memory was 63.3MB in the beginning and 130.8MB in the end (delta: -67.6MB). Peak memory consumption was 95.0MB. Max. memory is 16.1GB. [2024-01-27 16:01:05,447 INFO L158 Benchmark]: Witness Printer took 98.22ms. Allocated memory is still 318.8MB. Free memory was 130.8MB in the beginning and 125.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-01-27 16:01:05,449 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 121.6MB. Free memory was 83.2MB in the beginning and 83.1MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 556.63ms. Allocated memory is still 180.4MB. Free memory was 144.4MB in the beginning and 117.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.36ms. Allocated memory is still 180.4MB. Free memory was 116.6MB in the beginning and 114.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 85.86ms. Allocated memory is still 180.4MB. Free memory was 114.5MB in the beginning and 111.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 675.24ms. Allocated memory is still 180.4MB. Free memory was 111.7MB in the beginning and 64.1MB in the end (delta: 47.6MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * TraceAbstraction took 7849.34ms. Allocated memory was 180.4MB in the beginning and 318.8MB in the end (delta: 138.4MB). Free memory was 63.3MB in the beginning and 130.8MB in the end (delta: -67.6MB). Peak memory consumption was 95.0MB. Max. memory is 16.1GB. * Witness Printer took 98.22ms. Allocated memory is still 318.8MB. Free memory was 130.8MB in the beginning and 125.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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, 57 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.8s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 517 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 507 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2837 IncrementalHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 1 mSDtfsCounter, 2837 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 327 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=420occurred in iteration=7, InterpolantAutomatonStates: 50, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 510 NumberOfCodeBlocks, 498 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 639 ConstructedInterpolants, 0 QuantifiedInterpolants, 2473 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1318 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 265/537 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! [2024-01-27 16:01:05,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE