./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.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_46-escape_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:13:04,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:13:05,043 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:13:05,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:13:05,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:13:05,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:13:05,068 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:13:05,069 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:13:05,069 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:13:05,069 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:13:05,069 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:13:05,070 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:13:05,070 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:13:05,070 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:13:05,071 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:13:05,071 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:13:05,071 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:13:05,072 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:13:05,088 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:13:05,088 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:13:05,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:13:05,089 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:13:05,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:13:05,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:13:05,089 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:13:05,089 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:13:05,090 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:13:05,090 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:13:05,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:13:05,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:13:05,091 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:13:05,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:13:05,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:13:05,104 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:13:05,104 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:13:05,105 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:13:05,105 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:13:05,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:13:05,105 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:13:05,105 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:13:05,106 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:13:05,106 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:13:05,106 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:13:05,106 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 [2024-01-27 15:13:05,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:13:05,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:13:05,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:13:05,365 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:13:05,365 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:13:05,366 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2024-01-27 15:13:06,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:13:06,578 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:13:06,592 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2024-01-27 15:13:06,607 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d13d7844/a8b9995bcda64557938cef12f6551570/FLAG164bcd7b5 [2024-01-27 15:13:06,624 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d13d7844/a8b9995bcda64557938cef12f6551570 [2024-01-27 15:13:06,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:13:06,627 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:13:06,629 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:13:06,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:13:06,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:13:06,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:13:06" (1/1) ... [2024-01-27 15:13:06,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab60522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:13:06, skipping insertion in model container [2024-01-27 15:13:06,635 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:13:06" (1/1) ... [2024-01-27 15:13:06,672 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:13:06,870 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_46-escape_racefree.i[30176,30189] [2024-01-27 15:13:06,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:13:06,911 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:13:06,941 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_46-escape_racefree.i[30176,30189] [2024-01-27 15:13:06,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:13:06,972 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:13:06,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:13:06 WrapperNode [2024-01-27 15:13:06,976 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:13:06,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:13:06,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:13:06,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:13:06,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:13:06" (1/1) ... [2024-01-27 15:13:06,997 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:13:06" (1/1) ... [2024-01-27 15:13:07,015 INFO L138 Inliner]: procedures = 171, calls = 44, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 76 [2024-01-27 15:13:07,016 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:13:07,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:13:07,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:13:07,017 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:13:07,024 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:13:06" (1/1) ... [2024-01-27 15:13:07,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:13:06" (1/1) ... [2024-01-27 15:13:07,028 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:13:06" (1/1) ... [2024-01-27 15:13:07,040 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 6, 5, 2, 5]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 1, 5, 0, 5]. The 3 writes are split as follows [0, 2, 0, 1, 0]. [2024-01-27 15:13:07,044 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:13:06" (1/1) ... [2024-01-27 15:13:07,044 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:13:06" (1/1) ... [2024-01-27 15:13:07,048 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:13:06" (1/1) ... [2024-01-27 15:13:07,055 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:13:06" (1/1) ... [2024-01-27 15:13:07,057 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:13:06" (1/1) ... [2024-01-27 15:13:07,065 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:13:06" (1/1) ... [2024-01-27 15:13:07,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:13:07,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:13:07,071 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:13:07,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:13:07,072 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:13:06" (1/1) ... [2024-01-27 15:13:07,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:13:07,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:13:07,102 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 15:13:07,119 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 15:13:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:13:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:13:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:13:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:13:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:13:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:13:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:13:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:13:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:13:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:13:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-27 15:13:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:13:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:13:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-27 15:13:07,147 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-27 15:13:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:13:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:13:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:13:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:13:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:13:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:13:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-27 15:13:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:13:07,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:13:07,152 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 15:13:07,276 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:13:07,278 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:13:07,411 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:13:07,412 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:13:07,579 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:13:07,579 INFO L320 CfgBuilder]: Removed 8 assume(true) statements. [2024-01-27 15:13:07,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:13:07 BoogieIcfgContainer [2024-01-27 15:13:07,579 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:13:07,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:13:07,594 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:13:07,596 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:13:07,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:13:06" (1/3) ... [2024-01-27 15:13:07,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27848bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:13:07, skipping insertion in model container [2024-01-27 15:13:07,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:13:06" (2/3) ... [2024-01-27 15:13:07,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27848bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:13:07, skipping insertion in model container [2024-01-27 15:13:07,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:13:07" (3/3) ... [2024-01-27 15:13:07,600 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_46-escape_racefree.i [2024-01-27 15:13:07,608 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:13:07,616 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:13:07,616 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:13:07,616 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:13:07,644 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-01-27 15:13:07,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 45 transitions, 97 flow [2024-01-27 15:13:07,701 INFO L124 PetriNetUnfolderBase]: 9/44 cut-off events. [2024-01-27 15:13:07,702 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-27 15:13:07,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 44 events. 9/44 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 105 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 40. Up to 3 conditions per place. [2024-01-27 15:13:07,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 45 transitions, 97 flow [2024-01-27 15:13:07,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 42 transitions, 87 flow [2024-01-27 15:13:07,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:13:07,728 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;@c58248, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:13:07,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-01-27 15:13:07,735 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:13:07,735 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2024-01-27 15:13:07,735 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:13:07,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:13:07,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:13:07,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:13:07,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:13:07,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1834289047, now seen corresponding path program 1 times [2024-01-27 15:13:07,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:13:07,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191224280] [2024-01-27 15:13:07,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:13:07,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:13:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:13:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:13:08,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:13:08,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191224280] [2024-01-27 15:13:08,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191224280] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:13:08,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:13:08,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:13:08,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578377473] [2024-01-27 15:13:08,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:13:08,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:13:08,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:13:08,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:13:08,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:13:08,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-01-27 15:13:08,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 42 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 15:13:08,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:13:08,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-01-27 15:13:08,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:13:08,229 INFO L124 PetriNetUnfolderBase]: 102/303 cut-off events. [2024-01-27 15:13:08,229 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:13:08,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 303 events. 102/303 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1291 event pairs, 33 based on Foata normal form. 63/356 useless extension candidates. Maximal degree in co-relation 526. Up to 132 conditions per place. [2024-01-27 15:13:08,235 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 18 selfloop transitions, 2 changer transitions 24/53 dead transitions. [2024-01-27 15:13:08,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 193 flow [2024-01-27 15:13:08,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:13:08,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:13:08,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-01-27 15:13:08,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377777777777778 [2024-01-27 15:13:08,246 INFO L175 Difference]: Start difference. First operand has 37 places, 42 transitions, 87 flow. Second operand 5 states and 121 transitions. [2024-01-27 15:13:08,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 193 flow [2024-01-27 15:13:08,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:13:08,253 INFO L231 Difference]: Finished difference. Result has 43 places, 26 transitions, 66 flow [2024-01-27 15:13:08,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2024-01-27 15:13:08,257 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2024-01-27 15:13:08,257 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 66 flow [2024-01-27 15:13:08,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 15:13:08,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:13:08,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:13:08,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:13:08,258 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:13:08,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:13:08,260 INFO L85 PathProgramCache]: Analyzing trace with hash -948793226, now seen corresponding path program 1 times [2024-01-27 15:13:08,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:13:08,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708685955] [2024-01-27 15:13:08,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:13:08,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:13:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:13:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:13:08,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:13:08,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708685955] [2024-01-27 15:13:08,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708685955] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:13:08,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:13:08,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:13:08,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093283494] [2024-01-27 15:13:08,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:13:08,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:13:08,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:13:08,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:13:08,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:13:08,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2024-01-27 15:13:08,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 15:13:08,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:13:08,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2024-01-27 15:13:08,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:13:08,542 INFO L124 PetriNetUnfolderBase]: 15/70 cut-off events. [2024-01-27 15:13:08,542 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:13:08,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 70 events. 15/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 3 based on Foata normal form. 9/79 useless extension candidates. Maximal degree in co-relation 124. Up to 36 conditions per place. [2024-01-27 15:13:08,544 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 14 selfloop transitions, 4 changer transitions 1/29 dead transitions. [2024-01-27 15:13:08,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 110 flow [2024-01-27 15:13:08,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:13:08,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:13:08,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-01-27 15:13:08,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-01-27 15:13:08,548 INFO L175 Difference]: Start difference. First operand has 43 places, 26 transitions, 66 flow. Second operand 4 states and 77 transitions. [2024-01-27 15:13:08,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 110 flow [2024-01-27 15:13:08,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 102 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-27 15:13:08,550 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 66 flow [2024-01-27 15:13:08,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-01-27 15:13:08,552 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2024-01-27 15:13:08,552 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 66 flow [2024-01-27 15:13:08,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 15:13:08,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:13:08,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:13:08,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:13:08,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:13:08,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:13:08,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2101991453, now seen corresponding path program 1 times [2024-01-27 15:13:08,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:13:08,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549818311] [2024-01-27 15:13:08,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:13:08,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:13:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:13:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:13:08,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:13:08,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549818311] [2024-01-27 15:13:08,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549818311] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:13:08,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:13:08,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:13:08,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75242941] [2024-01-27 15:13:08,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:13:08,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:13:08,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:13:08,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:13:08,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:13:08,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-01-27 15:13:08,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 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 15:13:08,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:13:08,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-01-27 15:13:08,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:13:08,963 INFO L124 PetriNetUnfolderBase]: 15/65 cut-off events. [2024-01-27 15:13:08,963 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:13:08,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 65 events. 15/65 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 2 based on Foata normal form. 2/67 useless extension candidates. Maximal degree in co-relation 121. Up to 18 conditions per place. [2024-01-27 15:13:08,966 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2024-01-27 15:13:08,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 130 flow [2024-01-27 15:13:08,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 15:13:08,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 15:13:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-01-27 15:13:08,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33611111111111114 [2024-01-27 15:13:08,969 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 66 flow. Second operand 8 states and 121 transitions. [2024-01-27 15:13:08,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 130 flow [2024-01-27 15:13:08,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:13:08,970 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-01-27 15:13:08,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-01-27 15:13:08,971 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-01-27 15:13:08,971 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-01-27 15:13:08,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 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 15:13:08,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-01-27 15:13:08,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-01-27 15:13:08,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:13:08,975 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-01-27 15:13:08,978 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:13:08,978 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:13:08,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:13:08 BasicIcfg [2024-01-27 15:13:08,988 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:13:08,990 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:13:08,990 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:13:08,990 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:13:08,990 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:13:07" (3/4) ... [2024-01-27 15:13:08,992 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:13:08,995 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-01-27 15:13:08,999 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 40 nodes and edges [2024-01-27 15:13:09,000 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-01-27 15:13:09,000 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-01-27 15:13:09,000 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-01-27 15:13:09,069 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:13:09,069 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:13:09,069 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:13:09,070 INFO L158 Benchmark]: Toolchain (without parser) took 2442.81ms. Allocated memory was 144.7MB in the beginning and 199.2MB in the end (delta: 54.5MB). Free memory was 111.0MB in the beginning and 73.4MB in the end (delta: 37.6MB). Peak memory consumption was 92.2MB. Max. memory is 16.1GB. [2024-01-27 15:13:09,071 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 144.7MB. Free memory was 112.5MB in the beginning and 112.3MB in the end (delta: 161.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:13:09,071 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.43ms. Allocated memory is still 144.7MB. Free memory was 111.0MB in the beginning and 90.2MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-01-27 15:13:09,071 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.21ms. Allocated memory is still 144.7MB. Free memory was 90.2MB in the beginning and 88.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:13:09,071 INFO L158 Benchmark]: Boogie Preprocessor took 53.96ms. Allocated memory is still 144.7MB. Free memory was 88.1MB in the beginning and 85.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:13:09,071 INFO L158 Benchmark]: RCFGBuilder took 520.71ms. Allocated memory was 144.7MB in the beginning and 199.2MB in the end (delta: 54.5MB). Free memory was 85.6MB in the beginning and 166.0MB in the end (delta: -80.4MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2024-01-27 15:13:09,072 INFO L158 Benchmark]: TraceAbstraction took 1394.31ms. Allocated memory is still 199.2MB. Free memory was 166.0MB in the beginning and 77.6MB in the end (delta: 88.4MB). Peak memory consumption was 86.4MB. Max. memory is 16.1GB. [2024-01-27 15:13:09,072 INFO L158 Benchmark]: Witness Printer took 80.06ms. Allocated memory is still 199.2MB. Free memory was 77.6MB in the beginning and 73.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:13:09,073 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 144.7MB. Free memory was 112.5MB in the beginning and 112.3MB in the end (delta: 161.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.43ms. Allocated memory is still 144.7MB. Free memory was 111.0MB in the beginning and 90.2MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.21ms. Allocated memory is still 144.7MB. Free memory was 90.2MB in the beginning and 88.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.96ms. Allocated memory is still 144.7MB. Free memory was 88.1MB in the beginning and 85.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 520.71ms. Allocated memory was 144.7MB in the beginning and 199.2MB in the end (delta: 54.5MB). Free memory was 85.6MB in the beginning and 166.0MB in the end (delta: -80.4MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1394.31ms. Allocated memory is still 199.2MB. Free memory was 166.0MB in the beginning and 77.6MB in the end (delta: 88.4MB). Peak memory consumption was 86.4MB. Max. memory is 16.1GB. * Witness Printer took 80.06ms. Allocated memory is still 199.2MB. Free memory was 77.6MB in the beginning and 73.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 691]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 56 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 181 IncrementalHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 1 mSDtfsCounter, 181 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 355 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-27 15:13:09,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE