./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/goblint-regression/28-race_reach_91-arrayloop2_racefree.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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:26:12,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:26:12,328 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:26:12,332 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:26:12,333 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:26:12,354 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:26:12,355 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:26:12,355 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:26:12,356 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:26:12,359 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:26:12,359 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:26:12,359 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:26:12,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:26:12,361 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:26:12,361 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:26:12,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:26:12,361 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:26:12,362 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:26:12,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:26:12,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:26:12,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:26:12,362 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:26:12,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:26:12,363 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:26:12,363 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:26:12,363 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:26:12,363 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:26:12,364 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:26:12,364 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:26:12,364 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:26:12,365 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:26:12,365 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:26:12,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:26:12,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:26:12,366 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:26:12,366 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:26:12,366 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:26:12,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:26:12,366 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:26:12,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:26:12,367 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:26:12,367 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:26:12,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:26:12,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2024-06-27 16:26:12,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:26:12,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:26:12,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:26:12,597 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:26:12,598 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:26:12,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-06-27 16:26:13,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:26:13,909 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:26:13,909 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-06-27 16:26:13,923 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f379cd6f6/056ef85a0a9944efb9af1f2461c4aa6f/FLAGd4ffb7640 [2024-06-27 16:26:13,935 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f379cd6f6/056ef85a0a9944efb9af1f2461c4aa6f [2024-06-27 16:26:13,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:26:13,938 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:26:13,939 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:26:13,939 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:26:13,942 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:26:13,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:26:13" (1/1) ... [2024-06-27 16:26:13,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d91d04f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:13, skipping insertion in model container [2024-06-27 16:26:13,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:26:13" (1/1) ... [2024-06-27 16:26:13,976 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:26:14,321 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2024-06-27 16:26:14,339 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 16:26:14,340 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 16:26:14,340 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 16:26:14,341 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 16:26:14,370 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:26:14,398 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:26:14,439 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2024-06-27 16:26:14,445 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 16:26:14,445 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 16:26:14,446 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 16:26:14,447 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 16:26:14,453 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:26:14,577 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:26:14,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:14 WrapperNode [2024-06-27 16:26:14,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:26:14,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:26:14,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:26:14,585 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:26:14,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:14" (1/1) ... [2024-06-27 16:26:14,628 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:14" (1/1) ... [2024-06-27 16:26:14,656 INFO L138 Inliner]: procedures = 278, calls = 49, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 195 [2024-06-27 16:26:14,660 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:26:14,661 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:26:14,661 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:26:14,661 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:26:14,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:14" (1/1) ... [2024-06-27 16:26:14,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:14" (1/1) ... [2024-06-27 16:26:14,676 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:14" (1/1) ... [2024-06-27 16:26:14,694 INFO L175 MemorySlicer]: Split 28 memory accesses to 4 slices as follows [2, 2, 5, 19]. 68 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 14 writes are split as follows [0, 1, 0, 13]. [2024-06-27 16:26:14,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:14" (1/1) ... [2024-06-27 16:26:14,699 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:14" (1/1) ... [2024-06-27 16:26:14,712 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:14" (1/1) ... [2024-06-27 16:26:14,715 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:14" (1/1) ... [2024-06-27 16:26:14,716 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:14" (1/1) ... [2024-06-27 16:26:14,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:14" (1/1) ... [2024-06-27 16:26:14,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:26:14,723 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:26:14,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:26:14,724 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:26:14,724 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:14" (1/1) ... [2024-06-27 16:26:14,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:26:14,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:26:14,756 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) [2024-06-27 16:26:14,764 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 [2024-06-27 16:26:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-06-27 16:26:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-06-27 16:26:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-06-27 16:26:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-06-27 16:26:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-06-27 16:26:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-06-27 16:26:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 16:26:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 16:26:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 16:26:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-06-27 16:26:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-06-27 16:26:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 16:26:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 16:26:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-06-27 16:26:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-06-27 16:26:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 16:26:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 16:26:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:26:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-06-27 16:26:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-06-27 16:26:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-06-27 16:26:14,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-06-27 16:26:14,802 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-27 16:26:14,802 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-27 16:26:14,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:26:14,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 16:26:14,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-27 16:26:14,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-27 16:26:14,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:26:14,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:26:14,804 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:26:14,936 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:26:14,937 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:26:15,146 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:26:15,146 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:26:15,337 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:26:15,337 INFO L320 CfgBuilder]: Removed 16 assume(true) statements. [2024-06-27 16:26:15,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:26:15 BoogieIcfgContainer [2024-06-27 16:26:15,337 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:26:15,339 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:26:15,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:26:15,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:26:15,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:26:13" (1/3) ... [2024-06-27 16:26:15,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1015c9f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:26:15, skipping insertion in model container [2024-06-27 16:26:15,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:26:14" (2/3) ... [2024-06-27 16:26:15,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1015c9f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:26:15, skipping insertion in model container [2024-06-27 16:26:15,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:26:15" (3/3) ... [2024-06-27 16:26:15,345 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2024-06-27 16:26:15,351 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:26:15,358 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:26:15,358 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:26:15,358 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:26:15,397 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-06-27 16:26:15,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 60 transitions, 127 flow [2024-06-27 16:26:15,467 INFO L124 PetriNetUnfolderBase]: 17/64 cut-off events. [2024-06-27 16:26:15,467 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-27 16:26:15,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 17/64 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2024-06-27 16:26:15,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 60 transitions, 127 flow [2024-06-27 16:26:15,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 58 transitions, 120 flow [2024-06-27 16:26:15,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:26:15,492 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;@7c9016cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:26:15,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-06-27 16:26:15,500 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:26:15,500 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-06-27 16:26:15,500 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 16:26:15,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:26:15,501 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-06-27 16:26:15,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-06-27 16:26:15,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:26:15,505 INFO L85 PathProgramCache]: Analyzing trace with hash 324870064, now seen corresponding path program 1 times [2024-06-27 16:26:15,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:26:15,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270011079] [2024-06-27 16:26:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:26:15,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:26:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:26:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:26:15,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:26:15,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270011079] [2024-06-27 16:26:15,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270011079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:26:15,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:26:15,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:26:15,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002044375] [2024-06-27 16:26:15,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:26:15,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:26:15,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:26:15,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:26:15,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:26:15,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-27 16:26:15,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 58 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-06-27 16:26:15,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:26:15,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-27 16:26:15,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:26:15,962 INFO L124 PetriNetUnfolderBase]: 116/321 cut-off events. [2024-06-27 16:26:15,963 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 16:26:15,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 321 events. 116/321 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1308 event pairs, 95 based on Foata normal form. 42/305 useless extension candidates. Maximal degree in co-relation 531. Up to 237 conditions per place. [2024-06-27 16:26:15,967 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-06-27 16:26:15,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 174 flow [2024-06-27 16:26:15,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:26:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:26:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-06-27 16:26:15,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-06-27 16:26:15,980 INFO L175 Difference]: Start difference. First operand has 45 places, 58 transitions, 120 flow. Second operand 3 states and 92 transitions. [2024-06-27 16:26:15,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 174 flow [2024-06-27 16:26:15,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:26:15,987 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 110 flow [2024-06-27 16:26:15,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-06-27 16:26:15,991 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-06-27 16:26:15,992 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 110 flow [2024-06-27 16:26:15,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-06-27 16:26:15,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:26:15,992 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:26:15,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:26:15,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-06-27 16:26:15,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:26:15,994 INFO L85 PathProgramCache]: Analyzing trace with hash 521651503, now seen corresponding path program 1 times [2024-06-27 16:26:15,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:26:15,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305555724] [2024-06-27 16:26:15,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:26:15,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:26:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:26:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:26:16,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:26:16,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305555724] [2024-06-27 16:26:16,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305555724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:26:16,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:26:16,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:26:16,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65012424] [2024-06-27 16:26:16,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:26:16,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:26:16,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:26:16,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:26:16,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:26:16,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-27 16:26:16,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-06-27 16:26:16,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:26:16,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-27 16:26:16,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:26:16,286 INFO L124 PetriNetUnfolderBase]: 116/323 cut-off events. [2024-06-27 16:26:16,286 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 16:26:16,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 323 events. 116/323 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1311 event pairs, 95 based on Foata normal form. 2/270 useless extension candidates. Maximal degree in co-relation 558. Up to 240 conditions per place. [2024-06-27 16:26:16,292 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 32 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-06-27 16:26:16,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 180 flow [2024-06-27 16:26:16,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:26:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:26:16,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-27 16:26:16,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-27 16:26:16,296 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 110 flow. Second operand 3 states and 79 transitions. [2024-06-27 16:26:16,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 180 flow [2024-06-27 16:26:16,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:26:16,302 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 122 flow [2024-06-27 16:26:16,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-06-27 16:26:16,303 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2024-06-27 16:26:16,303 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 122 flow [2024-06-27 16:26:16,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-06-27 16:26:16,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:26:16,304 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:26:16,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:26:16,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-06-27 16:26:16,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:26:16,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1008072150, now seen corresponding path program 1 times [2024-06-27 16:26:16,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:26:16,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837152350] [2024-06-27 16:26:16,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:26:16,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:26:16,352 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 16:26:16,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156986768] [2024-06-27 16:26:16,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:26:16,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:26:16,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:26:16,356 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) [2024-06-27 16:26:16,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 16:26:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:26:16,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2024-06-27 16:26:16,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:26:16,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:26:16,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:26:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:26:16,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:26:16,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837152350] [2024-06-27 16:26:16,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 16:26:16,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156986768] [2024-06-27 16:26:16,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156986768] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:26:16,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 16:26:16,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-06-27 16:26:16,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030955246] [2024-06-27 16:26:16,539 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 16:26:16,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:26:16,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:26:16,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:26:16,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:26:16,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-27 16:26:16,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 122 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-27 16:26:16,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:26:16,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-27 16:26:16,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:26:16,791 INFO L124 PetriNetUnfolderBase]: 116/329 cut-off events. [2024-06-27 16:26:16,791 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-27 16:26:16,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 329 events. 116/329 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1325 event pairs, 95 based on Foata normal form. 6/280 useless extension candidates. Maximal degree in co-relation 565. Up to 240 conditions per place. [2024-06-27 16:26:16,793 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 32 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2024-06-27 16:26:16,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 208 flow [2024-06-27 16:26:16,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:26:16,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:26:16,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-27 16:26:16,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-27 16:26:16,795 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 122 flow. Second operand 6 states and 129 transitions. [2024-06-27 16:26:16,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 208 flow [2024-06-27 16:26:16,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 204 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 16:26:16,796 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 160 flow [2024-06-27 16:26:16,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-27 16:26:16,797 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-06-27 16:26:16,797 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 160 flow [2024-06-27 16:26:16,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-27 16:26:16,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:26:16,798 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:26:16,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-27 16:26:17,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:26:17,010 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-06-27 16:26:17,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:26:17,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2056112401, now seen corresponding path program 2 times [2024-06-27 16:26:17,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:26:17,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007386439] [2024-06-27 16:26:17,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:26:17,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:26:17,070 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 16:26:17,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821076281] [2024-06-27 16:26:17,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:26:17,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:26:17,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:26:17,075 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) [2024-06-27 16:26:17,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 16:26:17,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:26:17,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:26:17,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 16:26:17,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:26:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:26:17,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:26:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:26:17,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:26:17,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007386439] [2024-06-27 16:26:17,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 16:26:17,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821076281] [2024-06-27 16:26:17,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821076281] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:26:17,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 16:26:17,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-06-27 16:26:17,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908624301] [2024-06-27 16:26:17,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 16:26:17,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 16:26:17,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:26:17,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 16:26:17,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-06-27 16:26:17,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-27 16:26:17,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 160 flow. Second operand has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 12 states have internal predecessors, (197), 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) [2024-06-27 16:26:17,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:26:17,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-27 16:26:17,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:26:18,084 INFO L124 PetriNetUnfolderBase]: 116/341 cut-off events. [2024-06-27 16:26:18,085 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-06-27 16:26:18,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 341 events. 116/341 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1382 event pairs, 95 based on Foata normal form. 12/298 useless extension candidates. Maximal degree in co-relation 561. Up to 240 conditions per place. [2024-06-27 16:26:18,087 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 32 selfloop transitions, 11 changer transitions 0/58 dead transitions. [2024-06-27 16:26:18,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 58 transitions, 282 flow [2024-06-27 16:26:18,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 16:26:18,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 16:26:18,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-06-27 16:26:18,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-06-27 16:26:18,091 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 160 flow. Second operand 12 states and 228 transitions. [2024-06-27 16:26:18,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 58 transitions, 282 flow [2024-06-27 16:26:18,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 58 transitions, 268 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 16:26:18,098 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 242 flow [2024-06-27 16:26:18,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=242, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2024-06-27 16:26:18,100 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2024-06-27 16:26:18,100 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 242 flow [2024-06-27 16:26:18,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 12 states have internal predecessors, (197), 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) [2024-06-27 16:26:18,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:26:18,101 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:26:18,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 16:26:18,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-06-27 16:26:18,310 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-06-27 16:26:18,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:26:18,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1113487, now seen corresponding path program 3 times [2024-06-27 16:26:18,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:26:18,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56915558] [2024-06-27 16:26:18,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:26:18,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:26:18,426 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 16:26:18,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388468660] [2024-06-27 16:26:18,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 16:26:18,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:26:18,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:26:18,428 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) [2024-06-27 16:26:18,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 16:26:18,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-06-27 16:26:18,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:26:18,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2024-06-27 16:26:18,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:26:18,734 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-06-27 16:26:18,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:26:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-06-27 16:26:18,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:26:18,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56915558] [2024-06-27 16:26:18,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 16:26:18,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388468660] [2024-06-27 16:26:18,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388468660] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:26:18,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 16:26:18,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-06-27 16:26:18,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307926574] [2024-06-27 16:26:18,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 16:26:18,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:26:18,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:26:18,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:26:18,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:26:18,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-27 16:26:18,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-27 16:26:18,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:26:18,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-27 16:26:18,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:26:19,024 INFO L124 PetriNetUnfolderBase]: 118/368 cut-off events. [2024-06-27 16:26:19,025 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-06-27 16:26:19,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 368 events. 118/368 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1306 event pairs, 95 based on Foata normal form. 3/316 useless extension candidates. Maximal degree in co-relation 562. Up to 234 conditions per place. [2024-06-27 16:26:19,027 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 76 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2024-06-27 16:26:19,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 97 transitions, 755 flow [2024-06-27 16:26:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:26:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:26:19,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 16:26:19,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 16:26:19,028 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 242 flow. Second operand 6 states and 135 transitions. [2024-06-27 16:26:19,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 97 transitions, 755 flow [2024-06-27 16:26:19,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 97 transitions, 561 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-06-27 16:26:19,034 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 277 flow [2024-06-27 16:26:19,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2024-06-27 16:26:19,036 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 32 predicate places. [2024-06-27 16:26:19,036 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 277 flow [2024-06-27 16:26:19,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-27 16:26:19,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:26:19,037 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2024-06-27 16:26:19,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-27 16:26:19,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:26:19,249 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-06-27 16:26:19,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:26:19,249 INFO L85 PathProgramCache]: Analyzing trace with hash -985755604, now seen corresponding path program 4 times [2024-06-27 16:26:19,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:26:19,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013145528] [2024-06-27 16:26:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:26:19,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:26:19,653 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 16:26:19,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389644510] [2024-06-27 16:26:19,654 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 16:26:19,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:26:19,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:26:19,749 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) [2024-06-27 16:26:19,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 16:26:20,953 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 16:26:20,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:26:20,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 3709 conjuncts, 12 conjunts are in the unsatisfiable core [2024-06-27 16:26:20,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:26:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-06-27 16:26:21,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:26:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-06-27 16:26:21,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:26:21,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013145528] [2024-06-27 16:26:21,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 16:26:21,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389644510] [2024-06-27 16:26:21,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389644510] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:26:21,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 16:26:21,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-06-27 16:26:21,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559000445] [2024-06-27 16:26:21,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 16:26:21,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-06-27 16:26:21,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:26:21,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-06-27 16:26:21,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2024-06-27 16:26:21,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-27 16:26:21,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 277 flow. Second operand has 24 states, 24 states have (on average 16.333333333333332) internal successors, (392), 24 states have internal predecessors, (392), 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) [2024-06-27 16:26:21,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:26:21,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-27 16:26:21,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:26:22,522 INFO L124 PetriNetUnfolderBase]: 118/416 cut-off events. [2024-06-27 16:26:22,523 INFO L125 PetriNetUnfolderBase]: For 3489/3489 co-relation queries the response was YES. [2024-06-27 16:26:22,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 416 events. 118/416 cut-off events. For 3489/3489 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1306 event pairs, 95 based on Foata normal form. 48/409 useless extension candidates. Maximal degree in co-relation 567. Up to 246 conditions per place. [2024-06-27 16:26:22,525 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 34 selfloop transitions, 24 changer transitions 0/73 dead transitions. [2024-06-27 16:26:22,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 73 transitions, 465 flow [2024-06-27 16:26:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-06-27 16:26:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-06-27 16:26:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 426 transitions. [2024-06-27 16:26:22,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29583333333333334 [2024-06-27 16:26:22,527 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 277 flow. Second operand 24 states and 426 transitions. [2024-06-27 16:26:22,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 73 transitions, 465 flow [2024-06-27 16:26:22,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 73 transitions, 457 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 16:26:22,530 INFO L231 Difference]: Finished difference. Result has 111 places, 73 transitions, 511 flow [2024-06-27 16:26:22,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=511, PETRI_PLACES=111, PETRI_TRANSITIONS=73} [2024-06-27 16:26:22,531 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 66 predicate places. [2024-06-27 16:26:22,531 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 73 transitions, 511 flow [2024-06-27 16:26:22,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 16.333333333333332) internal successors, (392), 24 states have internal predecessors, (392), 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) [2024-06-27 16:26:22,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:26:22,531 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2024-06-27 16:26:22,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 16:26:22,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:26:22,740 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-06-27 16:26:22,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:26:22,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1561271852, now seen corresponding path program 5 times [2024-06-27 16:26:22,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:26:22,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592652129] [2024-06-27 16:26:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:26:22,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:26:23,487 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 16:26:23,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [82074157] [2024-06-27 16:26:23,488 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 16:26:23,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:26:23,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:26:23,489 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:26:23,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15