./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 a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/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-dev-a340643-m [2024-01-27 16:18:48,573 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:18:48,660 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:18:48,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:18:48,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:18:48,687 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:18:48,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:18:48,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:18:48,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:18:48,691 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:18:48,691 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:18:48,692 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:18:48,692 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:18:48,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:18:48,695 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:18:48,696 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:18:48,697 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:18:48,700 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:18:48,700 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:18:48,701 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:18:48,701 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:18:48,701 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:18:48,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:18:48,702 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:18:48,702 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:18:48,702 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:18:48,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:18:48,703 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:18:48,703 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:18:48,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:18:48,705 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:18:48,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:18:48,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:18:48,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:18:48,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:18:48,706 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:18:48,706 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:18:48,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:18:48,707 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:18:48,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:18:48,707 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:18:48,707 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:18:48,708 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:18:48,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2024-01-27 16:18:49,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:18:49,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:18:49,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:18:49,063 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:18:49,063 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:18:49,065 INFO L431 ainManager$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 [2024-01-27 16:18:50,180 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:18:50,499 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:18:50,500 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2024-01-27 16:18:50,519 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cdd9b791/3799fb42df3e40e3834d7a4b3695efc8/FLAG3070b8b7c [2024-01-27 16:18:50,542 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cdd9b791/3799fb42df3e40e3834d7a4b3695efc8 [2024-01-27 16:18:50,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:18:50,546 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:18:50,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:18:50,548 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:18:50,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:18:50,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:18:50" (1/1) ... [2024-01-27 16:18:50,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40824c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:50, skipping insertion in model container [2024-01-27 16:18:50,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:18:50" (1/1) ... [2024-01-27 16:18:50,612 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:18:51,042 WARN L239 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] [2024-01-27 16:18:51,061 WARN L1574 CHandler]: Possible shadowing of function new [2024-01-27 16:18:51,061 WARN L1574 CHandler]: Possible shadowing of function new [2024-01-27 16:18:51,062 WARN L1574 CHandler]: Possible shadowing of function new [2024-01-27 16:18:51,063 WARN L1574 CHandler]: Possible shadowing of function new [2024-01-27 16:18:51,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:18:51,147 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:18:51,193 WARN L239 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] [2024-01-27 16:18:51,196 WARN L1574 CHandler]: Possible shadowing of function new [2024-01-27 16:18:51,197 WARN L1574 CHandler]: Possible shadowing of function new [2024-01-27 16:18:51,197 WARN L1574 CHandler]: Possible shadowing of function new [2024-01-27 16:18:51,198 WARN L1574 CHandler]: Possible shadowing of function new [2024-01-27 16:18:51,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:18:51,257 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:18:51,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:51 WrapperNode [2024-01-27 16:18:51,258 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:18:51,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:18:51,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:18:51,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:18:51,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:51" (1/1) ... [2024-01-27 16:18:51,284 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:51" (1/1) ... [2024-01-27 16:18:51,335 INFO L138 Inliner]: procedures = 279, calls = 72, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 326 [2024-01-27 16:18:51,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:18:51,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:18:51,341 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:18:51,341 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:18:51,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:51" (1/1) ... [2024-01-27 16:18:51,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:51" (1/1) ... [2024-01-27 16:18:51,367 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:51" (1/1) ... [2024-01-27 16:18:51,401 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]. [2024-01-27 16:18:51,402 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:51" (1/1) ... [2024-01-27 16:18:51,402 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:51" (1/1) ... [2024-01-27 16:18:51,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:51" (1/1) ... [2024-01-27 16:18:51,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:51" (1/1) ... [2024-01-27 16:18:51,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:51" (1/1) ... [2024-01-27 16:18:51,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:51" (1/1) ... [2024-01-27 16:18:51,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:18:51,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:18:51,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:18:51,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:18:51,469 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:51" (1/1) ... [2024-01-27 16:18:51,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:18:51,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:18:51,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 16:18:51,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 16:18:51,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:18:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-01-27 16:18:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-01-27 16:18:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-01-27 16:18:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-01-27 16:18:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-01-27 16:18:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-01-27 16:18:51,561 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-01-27 16:18:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:18:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-27 16:18:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 16:18:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 16:18:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 16:18:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 16:18:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 16:18:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-01-27 16:18:51,563 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-01-27 16:18:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:18:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:18:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:18:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:18:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 16:18:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-27 16:18:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 16:18:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:18:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-01-27 16:18:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-01-27 16:18:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-01-27 16:18:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-01-27 16:18:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-01-27 16:18:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:18:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:18:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:18:51,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:18:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 16:18:51,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:18:51,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:18:51,568 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 16:18:51,766 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:18:51,768 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:18:52,256 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:18:52,257 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:18:52,538 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:18:52,539 INFO L320 CfgBuilder]: Removed 30 assume(true) statements. [2024-01-27 16:18:52,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:18:52 BoogieIcfgContainer [2024-01-27 16:18:52,539 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:18:52,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:18:52,541 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:18:52,544 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:18:52,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:18:50" (1/3) ... [2024-01-27 16:18:52,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@164d57d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:18:52, skipping insertion in model container [2024-01-27 16:18:52,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:51" (2/3) ... [2024-01-27 16:18:52,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@164d57d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:18:52, skipping insertion in model container [2024-01-27 16:18:52,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:18:52" (3/3) ... [2024-01-27 16:18:52,549 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2024-01-27 16:18:52,556 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:18:52,573 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:18:52,574 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 16:18:52,574 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:18:52,717 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-27 16:18:52,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 117 transitions, 254 flow [2024-01-27 16:18:52,821 INFO L124 PetriNetUnfolderBase]: 52/194 cut-off events. [2024-01-27 16:18:52,821 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-01-27 16:18:52,829 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. [2024-01-27 16:18:52,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 117 transitions, 254 flow [2024-01-27 16:18:52,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 117 transitions, 254 flow [2024-01-27 16:18:52,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:18:52,856 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;@736a00a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:18:52,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-01-27 16:18:52,864 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:18:52,865 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2024-01-27 16:18:52,865 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:18:52,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:18:52,866 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-01-27 16:18:52,866 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)] === [2024-01-27 16:18:52,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:18:52,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1143071775, now seen corresponding path program 1 times [2024-01-27 16:18:52,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:18:52,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359967199] [2024-01-27 16:18:52,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:18:52,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:18:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:18:53,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 16:18:53,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:18:53,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359967199] [2024-01-27 16:18:53,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359967199] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:18:53,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:18:53,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 16:18:53,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281850204] [2024-01-27 16:18:53,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:18:53,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:18:53,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:18:53,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:18:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:18:53,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2024-01-27 16:18:53,307 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) [2024-01-27 16:18:53,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:18:53,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2024-01-27 16:18:53,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:18:55,110 INFO L124 PetriNetUnfolderBase]: 7193/13989 cut-off events. [2024-01-27 16:18:55,110 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2024-01-27 16:18:55,134 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. [2024-01-27 16:18:55,200 INFO L140 encePairwiseOnDemand]: 92/117 looper letters, 66 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2024-01-27 16:18:55,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 98 transitions, 352 flow [2024-01-27 16:18:55,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:18:55,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:18:55,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2024-01-27 16:18:55,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5156695156695157 [2024-01-27 16:18:55,213 INFO L175 Difference]: Start difference. First operand has 88 places, 117 transitions, 254 flow. Second operand 3 states and 181 transitions. [2024-01-27 16:18:55,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 98 transitions, 352 flow [2024-01-27 16:18:55,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 98 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 16:18:55,220 INFO L231 Difference]: Finished difference. Result has 91 places, 96 transitions, 222 flow [2024-01-27 16:18:55,222 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} [2024-01-27 16:18:55,225 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2024-01-27 16:18:55,225 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 96 transitions, 222 flow [2024-01-27 16:18:55,225 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) [2024-01-27 16:18:55,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:18:55,225 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:18:55,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:18:55,226 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)] === [2024-01-27 16:18:55,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:18:55,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1965663388, now seen corresponding path program 1 times [2024-01-27 16:18:55,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:18:55,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694101307] [2024-01-27 16:18:55,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:18:55,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:18:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:18:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 16:18:55,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:18:55,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694101307] [2024-01-27 16:18:55,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694101307] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:18:55,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:18:55,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:18:55,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620183003] [2024-01-27 16:18:55,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:18:55,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:18:55,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:18:55,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:18:55,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:18:55,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2024-01-27 16:18:55,304 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) [2024-01-27 16:18:55,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:18:55,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2024-01-27 16:18:55,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:18:56,635 INFO L124 PetriNetUnfolderBase]: 7193/13991 cut-off events. [2024-01-27 16:18:56,635 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2024-01-27 16:18:56,662 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. [2024-01-27 16:18:56,725 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 65 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2024-01-27 16:18:56,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 97 transitions, 358 flow [2024-01-27 16:18:56,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:18:56,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:18:56,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-01-27 16:18:56,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472934472934473 [2024-01-27 16:18:56,736 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 222 flow. Second operand 3 states and 157 transitions. [2024-01-27 16:18:56,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 97 transitions, 358 flow [2024-01-27 16:18:56,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 97 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 16:18:56,741 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 234 flow [2024-01-27 16:18:56,741 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} [2024-01-27 16:18:56,742 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2024-01-27 16:18:56,742 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 234 flow [2024-01-27 16:18:56,743 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) [2024-01-27 16:18:56,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:18:56,743 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:18:56,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:18:56,744 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)] === [2024-01-27 16:18:56,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:18:56,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1409034290, now seen corresponding path program 1 times [2024-01-27 16:18:56,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:18:56,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941467963] [2024-01-27 16:18:56,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:18:56,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:18:56,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-27 16:18:56,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612851044] [2024-01-27 16:18:56,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:18:56,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:18:56,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:18:56,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 16:18:56,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-27 16:18:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:18:57,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 16:18:57,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:18:57,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 16:18:57,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:18:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 16:18:57,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:18:57,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941467963] [2024-01-27 16:18:57,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-27 16:18:57,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612851044] [2024-01-27 16:18:57,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612851044] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:18:57,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-27 16:18:57,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-01-27 16:18:57,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292403097] [2024-01-27 16:18:57,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-27 16:18:57,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:18:57,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:18:57,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:18:57,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:18:57,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2024-01-27 16:18:57,100 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) [2024-01-27 16:18:57,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:18:57,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2024-01-27 16:18:57,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:18:58,665 INFO L124 PetriNetUnfolderBase]: 7193/13997 cut-off events. [2024-01-27 16:18:58,666 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2024-01-27 16:18:58,691 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. [2024-01-27 16:18:58,745 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 65 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2024-01-27 16:18:58,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 100 transitions, 386 flow [2024-01-27 16:18:58,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:18:58,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:18:58,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 252 transitions. [2024-01-27 16:18:58,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2024-01-27 16:18:58,748 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 234 flow. Second operand 6 states and 252 transitions. [2024-01-27 16:18:58,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 100 transitions, 386 flow [2024-01-27 16:18:58,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 100 transitions, 382 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 16:18:58,752 INFO L231 Difference]: Finished difference. Result has 100 places, 100 transitions, 272 flow [2024-01-27 16:18:58,752 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} [2024-01-27 16:18:58,753 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 12 predicate places. [2024-01-27 16:18:58,753 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 100 transitions, 272 flow [2024-01-27 16:18:58,753 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) [2024-01-27 16:18:58,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:18:58,754 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:18:58,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-27 16:18:58,973 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 [2024-01-27 16:18:58,974 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)] === [2024-01-27 16:18:58,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:18:58,974 INFO L85 PathProgramCache]: Analyzing trace with hash -679945700, now seen corresponding path program 2 times [2024-01-27 16:18:58,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:18:58,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915627813] [2024-01-27 16:18:58,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:18:58,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:18:59,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-27 16:18:59,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531049820] [2024-01-27 16:18:59,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 16:18:59,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:18:59,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:18:59,065 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 16:18:59,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-27 16:18:59,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 16:18:59,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:18:59,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 16:18:59,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:18:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 16:18:59,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:18:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 16:18:59,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:18:59,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915627813] [2024-01-27 16:18:59,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-27 16:18:59,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531049820] [2024-01-27 16:18:59,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531049820] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:18:59,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-27 16:18:59,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-01-27 16:18:59,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286344302] [2024-01-27 16:18:59,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-27 16:18:59,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-27 16:18:59,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:18:59,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-27 16:18:59,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-01-27 16:18:59,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2024-01-27 16:18:59,433 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) [2024-01-27 16:18:59,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:18:59,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2024-01-27 16:18:59,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:19:01,846 INFO L124 PetriNetUnfolderBase]: 7193/14009 cut-off events. [2024-01-27 16:19:01,846 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2024-01-27 16:19:01,883 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. [2024-01-27 16:19:01,938 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 65 selfloop transitions, 11 changer transitions 0/106 dead transitions. [2024-01-27 16:19:01,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 460 flow [2024-01-27 16:19:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 16:19:01,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 16:19:01,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 441 transitions. [2024-01-27 16:19:01,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3141025641025641 [2024-01-27 16:19:01,944 INFO L175 Difference]: Start difference. First operand has 100 places, 100 transitions, 272 flow. Second operand 12 states and 441 transitions. [2024-01-27 16:19:01,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 460 flow [2024-01-27 16:19:01,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 106 transitions, 446 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-27 16:19:01,952 INFO L231 Difference]: Finished difference. Result has 116 places, 106 transitions, 354 flow [2024-01-27 16:19:01,954 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} [2024-01-27 16:19:01,955 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 28 predicate places. [2024-01-27 16:19:01,956 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 106 transitions, 354 flow [2024-01-27 16:19:01,956 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) [2024-01-27 16:19:01,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:19:01,956 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:19:01,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-27 16:19:02,177 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 [2024-01-27 16:19:02,177 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)] === [2024-01-27 16:19:02,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:19:02,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1555889572, now seen corresponding path program 3 times [2024-01-27 16:19:02,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:19:02,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030817702] [2024-01-27 16:19:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:19:02,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:19:02,385 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-27 16:19:02,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198855248] [2024-01-27 16:19:02,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 16:19:02,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:19:02,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:19:02,390 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 16:19:02,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-27 16:19:02,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-27 16:19:02,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:19:02,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 16:19:02,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:19:02,736 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-01-27 16:19:02,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:19:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-01-27 16:19:02,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:19:02,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030817702] [2024-01-27 16:19:02,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-27 16:19:02,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198855248] [2024-01-27 16:19:02,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198855248] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:19:02,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-27 16:19:02,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-01-27 16:19:02,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827986522] [2024-01-27 16:19:02,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-27 16:19:02,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:19:02,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:19:02,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:19:02,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:19:02,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2024-01-27 16:19:02,778 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) [2024-01-27 16:19:02,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:19:02,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2024-01-27 16:19:02,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:19:04,503 INFO L124 PetriNetUnfolderBase]: 7195/14076 cut-off events. [2024-01-27 16:19:04,503 INFO L125 PetriNetUnfolderBase]: For 398/398 co-relation queries the response was YES. [2024-01-27 16:19:04,539 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. [2024-01-27 16:19:04,639 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 109 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2024-01-27 16:19:04,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 145 transitions, 933 flow [2024-01-27 16:19:04,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:19:04,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:19:04,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 258 transitions. [2024-01-27 16:19:04,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36752136752136755 [2024-01-27 16:19:04,650 INFO L175 Difference]: Start difference. First operand has 116 places, 106 transitions, 354 flow. Second operand 6 states and 258 transitions. [2024-01-27 16:19:04,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 145 transitions, 933 flow [2024-01-27 16:19:04,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 145 transitions, 739 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-01-27 16:19:04,656 INFO L231 Difference]: Finished difference. Result has 120 places, 109 transitions, 389 flow [2024-01-27 16:19:04,657 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} [2024-01-27 16:19:04,659 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 32 predicate places. [2024-01-27 16:19:04,659 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 109 transitions, 389 flow [2024-01-27 16:19:04,659 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) [2024-01-27 16:19:04,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:19:04,660 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2024-01-27 16:19:04,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-27 16:19:04,875 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 [2024-01-27 16:19:04,876 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)] === [2024-01-27 16:19:04,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:19:04,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2045814803, now seen corresponding path program 4 times [2024-01-27 16:19:04,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:19:04,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005830248] [2024-01-27 16:19:04,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:19:04,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:19:05,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-27 16:19:05,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473633403] [2024-01-27 16:19:05,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-27 16:19:05,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:19:05,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:19:05,416 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 16:19:05,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-27 16:19:06,998 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-27 16:19:06,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:19:07,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 3709 conjuncts, 12 conjunts are in the unsatisfiable core [2024-01-27 16:19:07,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:19:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-01-27 16:19:07,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:19:07,323 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-01-27 16:19:07,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:19:07,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005830248] [2024-01-27 16:19:07,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-27 16:19:07,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473633403] [2024-01-27 16:19:07,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473633403] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:19:07,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-01-27 16:19:07,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-01-27 16:19:07,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905220077] [2024-01-27 16:19:07,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-01-27 16:19:07,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-01-27 16:19:07,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:19:07,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-01-27 16:19:07,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2024-01-27 16:19:07,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2024-01-27 16:19:07,329 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) [2024-01-27 16:19:07,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:19:07,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2024-01-27 16:19:07,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:19:10,428 INFO L124 PetriNetUnfolderBase]: 7195/14124 cut-off events. [2024-01-27 16:19:10,428 INFO L125 PetriNetUnfolderBase]: For 3724/3724 co-relation queries the response was YES. [2024-01-27 16:19:10,452 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. [2024-01-27 16:19:10,479 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 67 selfloop transitions, 24 changer transitions 0/121 dead transitions. [2024-01-27 16:19:10,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 121 transitions, 643 flow [2024-01-27 16:19:10,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-01-27 16:19:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-01-27 16:19:10,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 819 transitions. [2024-01-27 16:19:10,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2916666666666667 [2024-01-27 16:19:10,486 INFO L175 Difference]: Start difference. First operand has 120 places, 109 transitions, 389 flow. Second operand 24 states and 819 transitions. [2024-01-27 16:19:10,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 121 transitions, 643 flow [2024-01-27 16:19:10,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 121 transitions, 635 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-27 16:19:10,492 INFO L231 Difference]: Finished difference. Result has 154 places, 121 transitions, 623 flow [2024-01-27 16:19:10,492 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} [2024-01-27 16:19:10,492 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 66 predicate places. [2024-01-27 16:19:10,493 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 121 transitions, 623 flow [2024-01-27 16:19:10,493 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) [2024-01-27 16:19:10,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:19:10,493 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2024-01-27 16:19:10,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-27 16:19:10,699 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 [2024-01-27 16:19:10,700 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)] === [2024-01-27 16:19:10,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:19:10,700 INFO L85 PathProgramCache]: Analyzing trace with hash -302090989, now seen corresponding path program 5 times [2024-01-27 16:19:10,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:19:10,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733658326] [2024-01-27 16:19:10,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:19:10,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:19:11,883 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-27 16:19:11,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545135947] [2024-01-27 16:19:11,884 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-27 16:19:11,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:19:11,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:19:11,888 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) [2024-01-27 16:19:11,891 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