./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.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_90-arrayloop2_racing.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 f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 17:32:12,677 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:32:12,899 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:32:12,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:32:12,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:32:12,943 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:32:12,947 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:32:12,948 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:32:12,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:32:12,949 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:32:12,949 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:32:12,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:32:12,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:32:12,951 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:32:12,955 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:32:12,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:32:12,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:32:12,956 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:32:12,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:32:12,957 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:32:12,957 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:32:12,958 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:32:12,958 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:32:12,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:32:12,959 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:32:12,959 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:32:12,959 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:32:12,959 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:32:12,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:32:12,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:32:12,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:32:12,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:32:12,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:32:12,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:32:12,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:32:12,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:32:12,963 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:32:12,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:32:12,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:32:12,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:32:12,963 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:32:12,964 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:32:12,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:32:12,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2024-06-27 17:32:13,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:32:13,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:32:13,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:32:13,288 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:32:13,289 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:32:13,290 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2024-06-27 17:32:14,564 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:32:14,819 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:32:14,819 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2024-06-27 17:32:14,843 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb5e75b73/4d1bff29cfd3487daca325f4056f71bc/FLAG84a6ad13b [2024-06-27 17:32:14,863 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb5e75b73/4d1bff29cfd3487daca325f4056f71bc [2024-06-27 17:32:14,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:32:14,874 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 17:32:14,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:32:14,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:32:14,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:32:14,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:32:14" (1/1) ... [2024-06-27 17:32:14,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fa7d77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:14, skipping insertion in model container [2024-06-27 17:32:14,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:32:14" (1/1) ... [2024-06-27 17:32:14,970 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:32:15,358 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_90-arrayloop2_racing.i[47038,47051] [2024-06-27 17:32:15,378 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 17:32:15,381 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 17:32:15,383 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 17:32:15,387 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 17:32:15,421 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:32:15,439 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 17:32:15,471 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_90-arrayloop2_racing.i[47038,47051] [2024-06-27 17:32:15,474 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 17:32:15,475 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 17:32:15,475 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 17:32:15,476 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 17:32:15,490 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:32:15,544 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:32:15,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15 WrapperNode [2024-06-27 17:32:15,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:32:15,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:32:15,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:32:15,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:32:15,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,614 INFO L138 Inliner]: procedures = 279, calls = 72, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 326 [2024-06-27 17:32:15,615 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:32:15,616 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:32:15,616 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:32:15,616 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:32:15,627 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,633 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,653 INFO L175 MemorySlicer]: Split 37 memory accesses to 5 slices as follows [2, 5, 2, 26, 2]. 70 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0, 0]. The 17 writes are split as follows [0, 0, 1, 15, 1]. [2024-06-27 17:32:15,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,666 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,671 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,674 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,676 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:32:15,682 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:32:15,682 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:32:15,682 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:32:15,683 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:32:15,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:32:15,733 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 17:32:15,746 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 17:32:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-06-27 17:32:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-06-27 17:32:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-06-27 17:32:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-06-27 17:32:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-06-27 17:32:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-06-27 17:32:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-06-27 17:32:15,793 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-06-27 17:32:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-06-27 17:32:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 17:32:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 17:32:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 17:32:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-06-27 17:32:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-06-27 17:32:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-06-27 17:32:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-06-27 17:32:15,796 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-06-27 17:32:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 17:32:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 17:32:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-06-27 17:32:15,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-06-27 17:32:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-06-27 17:32:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 17:32:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 17:32:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:32:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-06-27 17:32:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-06-27 17:32:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-06-27 17:32:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-06-27 17:32:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-06-27 17:32:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:32:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 17:32:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-27 17:32:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-27 17:32:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-06-27 17:32:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:32:15,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:32:15,803 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 17:32:16,000 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:32:16,002 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:32:16,393 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:32:16,394 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:32:16,737 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:32:16,738 INFO L320 CfgBuilder]: Removed 30 assume(true) statements. [2024-06-27 17:32:16,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:32:16 BoogieIcfgContainer [2024-06-27 17:32:16,739 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:32:16,741 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:32:16,742 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:32:16,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:32:16,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:32:14" (1/3) ... [2024-06-27 17:32:16,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a775eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:32:16, skipping insertion in model container [2024-06-27 17:32:16,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (2/3) ... [2024-06-27 17:32:16,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a775eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:32:16, skipping insertion in model container [2024-06-27 17:32:16,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:32:16" (3/3) ... [2024-06-27 17:32:16,749 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2024-06-27 17:32:16,757 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 17:32:16,765 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:32:16,765 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 17:32:16,766 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:32:16,846 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-27 17:32:16,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 117 transitions, 254 flow [2024-06-27 17:32:16,986 INFO L124 PetriNetUnfolderBase]: 52/194 cut-off events. [2024-06-27 17:32:16,987 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-06-27 17:32:16,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 194 events. 52/194 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 800 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 118. Up to 8 conditions per place. [2024-06-27 17:32:16,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 117 transitions, 254 flow [2024-06-27 17:32:17,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 117 transitions, 254 flow [2024-06-27 17:32:17,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:32:17,024 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;@56c3bf8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:32:17,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-27 17:32:17,034 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:32:17,035 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2024-06-27 17:32:17,035 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:32:17,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:17,036 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-06-27 17:32:17,036 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-06-27 17:32:17,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:17,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1143071775, now seen corresponding path program 1 times [2024-06-27 17:32:17,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:17,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940427832] [2024-06-27 17:32:17,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:17,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:17,460 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 17:32:17,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:17,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940427832] [2024-06-27 17:32:17,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940427832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:32:17,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:32:17,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:32:17,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526179784] [2024-06-27 17:32:17,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:32:17,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:32:17,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:17,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:32:17,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:32:17,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2024-06-27 17:32:17,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 117 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 17:32:17,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:17,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2024-06-27 17:32:17,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:19,334 INFO L124 PetriNetUnfolderBase]: 7193/13989 cut-off events. [2024-06-27 17:32:19,334 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2024-06-27 17:32:19,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24683 conditions, 13989 events. 7193/13989 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 112172 event pairs, 6080 based on Foata normal form. 2354/14295 useless extension candidates. Maximal degree in co-relation 23590. Up to 10560 conditions per place. [2024-06-27 17:32:19,437 INFO L140 encePairwiseOnDemand]: 92/117 looper letters, 66 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2024-06-27 17:32:19,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 98 transitions, 352 flow [2024-06-27 17:32:19,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:32:19,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:32:19,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2024-06-27 17:32:19,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5156695156695157 [2024-06-27 17:32:19,451 INFO L175 Difference]: Start difference. First operand has 88 places, 117 transitions, 254 flow. Second operand 3 states and 181 transitions. [2024-06-27 17:32:19,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 98 transitions, 352 flow [2024-06-27 17:32:19,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 98 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 17:32:19,459 INFO L231 Difference]: Finished difference. Result has 91 places, 96 transitions, 222 flow [2024-06-27 17:32:19,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=91, PETRI_TRANSITIONS=96} [2024-06-27 17:32:19,464 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2024-06-27 17:32:19,465 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 96 transitions, 222 flow [2024-06-27 17:32:19,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 17:32:19,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:19,466 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:32:19,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:32:19,467 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-06-27 17:32:19,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:19,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1965663388, now seen corresponding path program 1 times [2024-06-27 17:32:19,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:19,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236379906] [2024-06-27 17:32:19,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:19,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:19,572 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 17:32:19,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:19,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236379906] [2024-06-27 17:32:19,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236379906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:32:19,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:32:19,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:32:19,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912071357] [2024-06-27 17:32:19,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:32:19,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:32:19,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:19,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:32:19,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:32:19,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2024-06-27 17:32:19,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 17:32:19,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:19,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2024-06-27 17:32:19,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:20,953 INFO L124 PetriNetUnfolderBase]: 7193/13991 cut-off events. [2024-06-27 17:32:20,954 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2024-06-27 17:32:20,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24694 conditions, 13991 events. 7193/13991 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 112180 event pairs, 6080 based on Foata normal form. 2/11948 useless extension candidates. Maximal degree in co-relation 24675. Up to 10563 conditions per place. [2024-06-27 17:32:21,055 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 65 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2024-06-27 17:32:21,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 97 transitions, 358 flow [2024-06-27 17:32:21,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:32:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:32:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-06-27 17:32:21,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472934472934473 [2024-06-27 17:32:21,061 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 222 flow. Second operand 3 states and 157 transitions. [2024-06-27 17:32:21,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 97 transitions, 358 flow [2024-06-27 17:32:21,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 97 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 17:32:21,065 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 234 flow [2024-06-27 17:32:21,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=93, PETRI_TRANSITIONS=97} [2024-06-27 17:32:21,066 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2024-06-27 17:32:21,067 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 234 flow [2024-06-27 17:32:21,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 17:32:21,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:21,067 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:32:21,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:32:21,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-06-27 17:32:21,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:21,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1409034290, now seen corresponding path program 1 times [2024-06-27 17:32:21,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:21,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101334836] [2024-06-27 17:32:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:21,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:21,106 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 17:32:21,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785933840] [2024-06-27 17:32:21,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:21,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:32:21,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:32:21,112 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 17:32:21,137 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 17:32:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:21,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2024-06-27 17:32:21,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:32:21,430 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 17:32:21,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:32:21,447 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 17:32:21,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:21,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101334836] [2024-06-27 17:32:21,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 17:32:21,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785933840] [2024-06-27 17:32:21,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785933840] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:32:21,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 17:32:21,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-06-27 17:32:21,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752041892] [2024-06-27 17:32:21,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 17:32:21,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:32:21,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:21,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:32:21,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:32:21,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2024-06-27 17:32:21,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 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 17:32:21,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:21,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2024-06-27 17:32:21,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:23,029 INFO L124 PetriNetUnfolderBase]: 7193/13997 cut-off events. [2024-06-27 17:32:23,029 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2024-06-27 17:32:23,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24722 conditions, 13997 events. 7193/13997 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 112222 event pairs, 6080 based on Foata normal form. 6/11958 useless extension candidates. Maximal degree in co-relation 24682. Up to 10563 conditions per place. [2024-06-27 17:32:23,100 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 65 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2024-06-27 17:32:23,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 100 transitions, 386 flow [2024-06-27 17:32:23,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:32:23,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:32:23,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 252 transitions. [2024-06-27 17:32:23,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2024-06-27 17:32:23,103 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 234 flow. Second operand 6 states and 252 transitions. [2024-06-27 17:32:23,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 100 transitions, 386 flow [2024-06-27 17:32:23,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 100 transitions, 382 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 17:32:23,110 INFO L231 Difference]: Finished difference. Result has 100 places, 100 transitions, 272 flow [2024-06-27 17:32:23,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=100, PETRI_TRANSITIONS=100} [2024-06-27 17:32:23,111 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 12 predicate places. [2024-06-27 17:32:23,111 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 100 transitions, 272 flow [2024-06-27 17:32:23,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 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 17:32:23,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:23,112 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:32:23,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 17:32:23,341 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 17:32:23,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-06-27 17:32:23,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:23,342 INFO L85 PathProgramCache]: Analyzing trace with hash -679945700, now seen corresponding path program 2 times [2024-06-27 17:32:23,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:23,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003997300] [2024-06-27 17:32:23,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:23,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:23,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 17:32:23,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136912517] [2024-06-27 17:32:23,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 17:32:23,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:32:23,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:32:23,417 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 17:32:23,435 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 17:32:23,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 17:32:23,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:32:23,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 17:32:23,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:32:23,722 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 17:32:23,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:32:23,774 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 17:32:23,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:23,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003997300] [2024-06-27 17:32:23,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 17:32:23,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136912517] [2024-06-27 17:32:23,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136912517] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:32:23,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 17:32:23,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-06-27 17:32:23,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400226858] [2024-06-27 17:32:23,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 17:32:23,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:32:23,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:23,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:32:23,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:32:23,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2024-06-27 17:32:23,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 100 transitions, 272 flow. Second operand has 12 states, 12 states have (on average 31.416666666666668) internal successors, (377), 12 states have internal predecessors, (377), 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 17:32:23,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:23,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2024-06-27 17:32:23,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:26,205 INFO L124 PetriNetUnfolderBase]: 7193/14009 cut-off events. [2024-06-27 17:32:26,205 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2024-06-27 17:32:26,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24793 conditions, 14009 events. 7193/14009 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 112276 event pairs, 6080 based on Foata normal form. 12/11976 useless extension candidates. Maximal degree in co-relation 24678. Up to 10563 conditions per place. [2024-06-27 17:32:26,277 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 65 selfloop transitions, 11 changer transitions 0/106 dead transitions. [2024-06-27 17:32:26,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 460 flow [2024-06-27 17:32:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 17:32:26,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 17:32:26,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 441 transitions. [2024-06-27 17:32:26,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3141025641025641 [2024-06-27 17:32:26,284 INFO L175 Difference]: Start difference. First operand has 100 places, 100 transitions, 272 flow. Second operand 12 states and 441 transitions. [2024-06-27 17:32:26,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 460 flow [2024-06-27 17:32:26,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 106 transitions, 446 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 17:32:26,292 INFO L231 Difference]: Finished difference. Result has 116 places, 106 transitions, 354 flow [2024-06-27 17:32:26,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=354, PETRI_PLACES=116, PETRI_TRANSITIONS=106} [2024-06-27 17:32:26,299 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 28 predicate places. [2024-06-27 17:32:26,300 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 106 transitions, 354 flow [2024-06-27 17:32:26,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.416666666666668) internal successors, (377), 12 states have internal predecessors, (377), 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 17:32:26,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:26,301 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:32:26,318 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 17:32:26,517 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 17:32:26,518 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-06-27 17:32:26,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:26,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1555889572, now seen corresponding path program 3 times [2024-06-27 17:32:26,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:26,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573541400] [2024-06-27 17:32:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:26,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:26,741 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 17:32:26,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318107957] [2024-06-27 17:32:26,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 17:32:26,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:32:26,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:32:26,747 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 17:32:26,764 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 17:32:27,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-06-27 17:32:27,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:32:27,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2024-06-27 17:32:27,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:32:27,126 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 17:32:27,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:32:27,162 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 17:32:27,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:27,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573541400] [2024-06-27 17:32:27,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 17:32:27,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318107957] [2024-06-27 17:32:27,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318107957] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:32:27,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 17:32:27,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-06-27 17:32:27,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909766063] [2024-06-27 17:32:27,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 17:32:27,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:32:27,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:27,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:32:27,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:32:27,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2024-06-27 17:32:27,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 106 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 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 17:32:27,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:27,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2024-06-27 17:32:27,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:28,906 INFO L124 PetriNetUnfolderBase]: 7195/14076 cut-off events. [2024-06-27 17:32:28,906 INFO L125 PetriNetUnfolderBase]: For 398/398 co-relation queries the response was YES. [2024-06-27 17:32:28,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25010 conditions, 14076 events. 7195/14076 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 112906 event pairs, 6080 based on Foata normal form. 3/12017 useless extension candidates. Maximal degree in co-relation 24703. Up to 10541 conditions per place. [2024-06-27 17:32:28,972 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 109 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2024-06-27 17:32:28,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 145 transitions, 933 flow [2024-06-27 17:32:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:32:28,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:32:28,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 258 transitions. [2024-06-27 17:32:28,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36752136752136755 [2024-06-27 17:32:28,974 INFO L175 Difference]: Start difference. First operand has 116 places, 106 transitions, 354 flow. Second operand 6 states and 258 transitions. [2024-06-27 17:32:28,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 145 transitions, 933 flow [2024-06-27 17:32:28,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 145 transitions, 739 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-06-27 17:32:28,981 INFO L231 Difference]: Finished difference. Result has 120 places, 109 transitions, 389 flow [2024-06-27 17:32:28,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=120, PETRI_TRANSITIONS=109} [2024-06-27 17:32:28,983 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 32 predicate places. [2024-06-27 17:32:28,983 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 109 transitions, 389 flow [2024-06-27 17:32:28,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 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 17:32:28,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:28,984 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2024-06-27 17:32:29,000 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 17:32:29,198 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 17:32:29,199 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-06-27 17:32:29,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:29,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2045814803, now seen corresponding path program 4 times [2024-06-27 17:32:29,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:29,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423238683] [2024-06-27 17:32:29,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:29,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:29,827 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 17:32:29,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134954980] [2024-06-27 17:32:29,827 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 17:32:29,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:32:29,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:32:29,829 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 17:32:29,839 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 17:32:31,369 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 17:32:31,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:32:31,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 3709 conjuncts, 12 conjunts are in the unsatisfiable core [2024-06-27 17:32:31,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:32:31,509 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 17:32:31,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:32:31,753 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 17:32:31,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:31,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423238683] [2024-06-27 17:32:31,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 17:32:31,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134954980] [2024-06-27 17:32:31,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134954980] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:32:31,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 17:32:31,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-06-27 17:32:31,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971903088] [2024-06-27 17:32:31,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 17:32:31,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-06-27 17:32:31,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:31,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-06-27 17:32:31,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2024-06-27 17:32:31,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2024-06-27 17:32:31,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 109 transitions, 389 flow. Second operand has 24 states, 24 states have (on average 31.333333333333332) internal successors, (752), 24 states have internal predecessors, (752), 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 17:32:31,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:31,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2024-06-27 17:32:31,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:34,913 INFO L124 PetriNetUnfolderBase]: 7195/14124 cut-off events. [2024-06-27 17:32:34,913 INFO L125 PetriNetUnfolderBase]: For 3724/3724 co-relation queries the response was YES. [2024-06-27 17:32:34,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25126 conditions, 14124 events. 7195/14124 cut-off events. For 3724/3724 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 112847 event pairs, 6080 based on Foata normal form. 48/12110 useless extension candidates. Maximal degree in co-relation 24708. Up to 10553 conditions per place. [2024-06-27 17:32:34,979 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 67 selfloop transitions, 24 changer transitions 0/121 dead transitions. [2024-06-27 17:32:34,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 121 transitions, 643 flow [2024-06-27 17:32:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-06-27 17:32:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-06-27 17:32:34,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 819 transitions. [2024-06-27 17:32:34,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2916666666666667 [2024-06-27 17:32:34,988 INFO L175 Difference]: Start difference. First operand has 120 places, 109 transitions, 389 flow. Second operand 24 states and 819 transitions. [2024-06-27 17:32:34,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 121 transitions, 643 flow [2024-06-27 17:32:34,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 121 transitions, 635 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 17:32:34,998 INFO L231 Difference]: Finished difference. Result has 154 places, 121 transitions, 623 flow [2024-06-27 17:32:34,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=623, PETRI_PLACES=154, PETRI_TRANSITIONS=121} [2024-06-27 17:32:35,001 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 66 predicate places. [2024-06-27 17:32:35,002 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 121 transitions, 623 flow [2024-06-27 17:32:35,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 31.333333333333332) internal successors, (752), 24 states have internal predecessors, (752), 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 17:32:35,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:35,003 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2024-06-27 17:32:35,032 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 17:32:35,224 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 17:32:35,224 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-06-27 17:32:35,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:35,225 INFO L85 PathProgramCache]: Analyzing trace with hash -302090989, now seen corresponding path program 5 times [2024-06-27 17:32:35,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:35,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831354289] [2024-06-27 17:32:35,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:35,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:36,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 17:32:36,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405693661] [2024-06-27 17:32:36,280 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 17:32:36,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:32:36,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:32:36,285 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 17:32:36,291 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