./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_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 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:42:40,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:42:40,738 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:42:40,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:42:40,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:42:40,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:42:40,777 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:42:40,777 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:42:40,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:42:40,789 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:42:40,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:42:40,789 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:42:40,790 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:42:40,790 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:42:40,791 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:42:40,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:42:40,795 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:42:40,796 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:42:40,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:42:40,796 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:42:40,796 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:42:40,797 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:42:40,797 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:42:40,797 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:42:40,798 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:42:40,798 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:42:40,798 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:42:40,798 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:42:40,799 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:42:40,799 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:42:40,799 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:42:40,800 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:42:40,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:42:40,800 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:42:40,801 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:42:40,801 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:42:40,801 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:42:40,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:42:40,802 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:42:40,802 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:42:40,803 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:42:40,806 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:42:40,806 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 [2024-11-19 01:42:41,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:42:41,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:42:41,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:42:41,094 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:42:41,094 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:42:41,095 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2024-11-19 01:42:42,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:42:42,972 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:42:42,973 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2024-11-19 01:42:42,997 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bf977f92/357eea688a5e455e9f0d819d9444f38d/FLAGcd115c6d8 [2024-11-19 01:42:43,263 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bf977f92/357eea688a5e455e9f0d819d9444f38d [2024-11-19 01:42:43,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:42:43,266 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:42:43,267 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:42:43,267 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:42:43,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:42:43,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:42:43" (1/1) ... [2024-11-19 01:42:43,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f30afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:43, skipping insertion in model container [2024-11-19 01:42:43,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:42:43" (1/1) ... [2024-11-19 01:42:43,331 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:42:43,765 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2024-11-19 01:42:43,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:42:44,126 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:42:44,176 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2024-11-19 01:42:44,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:42:44,314 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:42:44,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:44 WrapperNode [2024-11-19 01:42:44,316 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:42:44,317 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:42:44,317 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:42:44,317 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:42:44,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:44" (1/1) ... [2024-11-19 01:42:44,375 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:44" (1/1) ... [2024-11-19 01:42:44,485 INFO L138 Inliner]: procedures = 280, calls = 1604, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 1786 [2024-11-19 01:42:44,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:42:44,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:42:44,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:42:44,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:42:44,500 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:44" (1/1) ... [2024-11-19 01:42:44,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:44" (1/1) ... [2024-11-19 01:42:44,523 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:44" (1/1) ... [2024-11-19 01:42:44,685 INFO L175 MemorySlicer]: Split 1569 memory accesses to 8 slices as follows [2, 5, 259, 2, 5, 14, 1280, 2]. 82 percent of accesses are in the largest equivalence class. The 1548 initializations are split as follows [2, 5, 256, 0, 5, 0, 1280, 0]. The 11 writes are split as follows [0, 0, 1, 1, 0, 8, 0, 1]. [2024-11-19 01:42:44,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:44" (1/1) ... [2024-11-19 01:42:44,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:44" (1/1) ... [2024-11-19 01:42:44,735 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:44" (1/1) ... [2024-11-19 01:42:44,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:44" (1/1) ... [2024-11-19 01:42:44,797 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:44" (1/1) ... [2024-11-19 01:42:44,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:44" (1/1) ... [2024-11-19 01:42:44,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:42:44,829 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:42:44,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:42:44,830 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:42:44,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:44" (1/1) ... [2024-11-19 01:42:44,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:42:44,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:42:44,941 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) [2024-11-19 01:42:44,944 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 [2024-11-19 01:42:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 01:42:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 01:42:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 01:42:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-19 01:42:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-19 01:42:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-19 01:42:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-19 01:42:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-19 01:42:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-19 01:42:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-19 01:42:45,000 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-19 01:42:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 01:42:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-19 01:42:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-19 01:42:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-19 01:42:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-19 01:42:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-19 01:42:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-19 01:42:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-19 01:42:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-19 01:42:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 01:42:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:42:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:42:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 01:42:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 01:42:45,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 01:42:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-19 01:42:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-19 01:42:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-19 01:42:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-19 01:42:45,005 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-19 01:42:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:42:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:42:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 01:42:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 01:42:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 01:42:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-19 01:42:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-19 01:42:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-19 01:42:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 01:42:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:42:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:42:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 01:42:45,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 01:42:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-19 01:42:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-19 01:42:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-19 01:42:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-19 01:42:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-19 01:42:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-19 01:42:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:42:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:42:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 01:42:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 01:42:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 01:42:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-19 01:42:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-19 01:42:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-19 01:42:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:42:45,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:42:45,013 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:42:45,228 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:42:45,230 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:42:47,165 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:42:47,165 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:43:27,137 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:43:27,142 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-19 01:43:27,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:43:27 BoogieIcfgContainer [2024-11-19 01:43:27,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:43:27,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:43:27,153 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:43:27,156 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:43:27,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:42:43" (1/3) ... [2024-11-19 01:43:27,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e25da22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:43:27, skipping insertion in model container [2024-11-19 01:43:27,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:44" (2/3) ... [2024-11-19 01:43:27,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e25da22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:43:27, skipping insertion in model container [2024-11-19 01:43:27,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:43:27" (3/3) ... [2024-11-19 01:43:27,163 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2024-11-19 01:43:27,197 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:43:27,197 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:43:27,198 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:43:27,328 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 01:43:27,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 77 transitions, 174 flow [2024-11-19 01:43:27,531 INFO L124 PetriNetUnfolderBase]: 37/157 cut-off events. [2024-11-19 01:43:27,532 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-19 01:43:27,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 157 events. 37/157 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 573 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 80. Up to 8 conditions per place. [2024-11-19 01:43:27,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 77 transitions, 174 flow [2024-11-19 01:43:27,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 75 transitions, 164 flow [2024-11-19 01:43:27,550 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:43:27,557 INFO L333 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, 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;@1b02414c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:43:27,558 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 01:43:27,611 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:43:27,611 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2024-11-19 01:43:27,612 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:43:27,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:27,613 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-19 01:43:27,613 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:43:27,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:27,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1648729341, now seen corresponding path program 1 times [2024-11-19 01:43:27,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:27,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630779656] [2024-11-19 01:43:27,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:27,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:28,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:28,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630779656] [2024-11-19 01:43:28,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630779656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:43:28,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:43:28,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:43:28,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718002817] [2024-11-19 01:43:28,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:28,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:43:28,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:43:28,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:43:28,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-11-19 01:43:28,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 75 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:28,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:28,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-11-19 01:43:28,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:29,334 INFO L124 PetriNetUnfolderBase]: 2345/4510 cut-off events. [2024-11-19 01:43:29,334 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-11-19 01:43:29,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8332 conditions, 4510 events. 2345/4510 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27498 event pairs, 2178 based on Foata normal form. 406/4208 useless extension candidates. Maximal degree in co-relation 7099. Up to 3752 conditions per place. [2024-11-19 01:43:29,368 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 47 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-11-19 01:43:29,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 240 flow [2024-11-19 01:43:29,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:43:29,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:43:29,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-19 01:43:29,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2024-11-19 01:43:29,382 INFO L175 Difference]: Start difference. First operand has 63 places, 75 transitions, 164 flow. Second operand 3 states and 107 transitions. [2024-11-19 01:43:29,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 240 flow [2024-11-19 01:43:29,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:43:29,393 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 152 flow [2024-11-19 01:43:29,396 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2024-11-19 01:43:29,402 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2024-11-19 01:43:29,402 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 152 flow [2024-11-19 01:43:29,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:29,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:29,403 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 01:43:29,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:43:29,404 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:43:29,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:29,404 INFO L85 PathProgramCache]: Analyzing trace with hash -474935591, now seen corresponding path program 1 times [2024-11-19 01:43:29,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:29,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477802020] [2024-11-19 01:43:29,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:29,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:29,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:30,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:30,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477802020] [2024-11-19 01:43:30,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477802020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:30,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22124636] [2024-11-19 01:43:30,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:30,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:30,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:43:30,004 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) [2024-11-19 01:43:30,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:43:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:30,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 3764 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 01:43:31,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:43:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:31,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:43:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:31,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22124636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:43:31,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:43:31,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-19 01:43:31,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794798754] [2024-11-19 01:43:31,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:43:31,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:43:31,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:31,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:43:31,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:43:31,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-11-19 01:43:31,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-11-19 01:43:31,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:31,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-11-19 01:43:31,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:31,697 INFO L124 PetriNetUnfolderBase]: 2345/4513 cut-off events. [2024-11-19 01:43:31,698 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-11-19 01:43:31,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8348 conditions, 4513 events. 2345/4513 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27494 event pairs, 2178 based on Foata normal form. 0/3805 useless extension candidates. Maximal degree in co-relation 8335. Up to 3752 conditions per place. [2024-11-19 01:43:31,720 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 47 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2024-11-19 01:43:31,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 268 flow [2024-11-19 01:43:31,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:43:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:43:31,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-11-19 01:43:31,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31385281385281383 [2024-11-19 01:43:31,724 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 152 flow. Second operand 6 states and 145 transitions. [2024-11-19 01:43:31,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 268 flow [2024-11-19 01:43:31,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 264 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 01:43:31,728 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 184 flow [2024-11-19 01:43:31,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2024-11-19 01:43:31,729 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2024-11-19 01:43:31,729 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 184 flow [2024-11-19 01:43:31,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-11-19 01:43:31,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:31,730 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-11-19 01:43:31,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:43:31,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:31,931 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:43:31,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:31,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1141790589, now seen corresponding path program 2 times [2024-11-19 01:43:31,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:31,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123364671] [2024-11-19 01:43:31,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:43:31,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:32,148 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:43:32,151 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:43:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:32,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:32,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123364671] [2024-11-19 01:43:32,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123364671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:32,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652503361] [2024-11-19 01:43:32,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:43:32,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:32,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:43:32,685 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) [2024-11-19 01:43:32,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:43:33,564 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:43:33,565 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:43:33,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 3917 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:43:33,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:43:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:33,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:43:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:33,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652503361] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:43:33,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:43:33,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-19 01:43:33,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682974126] [2024-11-19 01:43:33,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:43:33,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:43:33,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:33,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:43:33,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:43:33,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-11-19 01:43:33,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 184 flow. Second operand has 13 states, 13 states have (on average 16.307692307692307) internal successors, (212), 13 states have internal predecessors, (212), 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) [2024-11-19 01:43:33,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:33,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-11-19 01:43:33,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:34,300 INFO L124 PetriNetUnfolderBase]: 2345/4519 cut-off events. [2024-11-19 01:43:34,301 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2024-11-19 01:43:34,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8385 conditions, 4519 events. 2345/4519 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27483 event pairs, 2178 based on Foata normal form. 6/3818 useless extension candidates. Maximal degree in co-relation 8326. Up to 3752 conditions per place. [2024-11-19 01:43:34,325 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 47 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-11-19 01:43:34,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 73 transitions, 336 flow [2024-11-19 01:43:34,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:43:34,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 01:43:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 244 transitions. [2024-11-19 01:43:34,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26406926406926406 [2024-11-19 01:43:34,328 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 184 flow. Second operand 12 states and 244 transitions. [2024-11-19 01:43:34,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 73 transitions, 336 flow [2024-11-19 01:43:34,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 73 transitions, 322 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-19 01:43:34,332 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 254 flow [2024-11-19 01:43:34,332 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=254, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2024-11-19 01:43:34,333 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 26 predicate places. [2024-11-19 01:43:34,333 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 254 flow [2024-11-19 01:43:34,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.307692307692307) internal successors, (212), 13 states have internal predecessors, (212), 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) [2024-11-19 01:43:34,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:34,334 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-11-19 01:43:34,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 01:43:34,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-19 01:43:34,539 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:43:34,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:34,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1541871421, now seen corresponding path program 3 times [2024-11-19 01:43:34,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:34,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835472600] [2024-11-19 01:43:34,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:43:34,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:35,012 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 01:43:35,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:43:36,124 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:36,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:36,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835472600] [2024-11-19 01:43:36,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835472600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:36,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842953664] [2024-11-19 01:43:36,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:43:36,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:36,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:43:36,130 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) [2024-11-19 01:43:36,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:43:48,588 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 01:43:48,588 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:43:48,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 4223 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 01:43:48,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:43:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:48,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:43:48,847 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:48,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842953664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:43:48,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:43:48,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 25 [2024-11-19 01:43:48,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004325202] [2024-11-19 01:43:48,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:43:48,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 01:43:48,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:48,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 01:43:48,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=326, Unknown=0, NotChecked=0, Total=650 [2024-11-19 01:43:48,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-11-19 01:43:48,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 254 flow. Second operand has 26 states, 26 states have (on average 16.192307692307693) internal successors, (421), 26 states have internal predecessors, (421), 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) [2024-11-19 01:43:48,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:48,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-11-19 01:43:48,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:49,612 INFO L124 PetriNetUnfolderBase]: 2345/4531 cut-off events. [2024-11-19 01:43:49,613 INFO L125 PetriNetUnfolderBase]: For 597/597 co-relation queries the response was YES. [2024-11-19 01:43:49,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8469 conditions, 4531 events. 2345/4531 cut-off events. For 597/597 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27481 event pairs, 2178 based on Foata normal form. 12/3836 useless extension candidates. Maximal degree in co-relation 8332. Up to 3752 conditions per place. [2024-11-19 01:43:49,640 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 47 selfloop transitions, 23 changer transitions 0/85 dead transitions. [2024-11-19 01:43:49,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 85 transitions, 490 flow [2024-11-19 01:43:49,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 01:43:49,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 01:43:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 442 transitions. [2024-11-19 01:43:49,643 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.23917748917748918 [2024-11-19 01:43:49,643 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 254 flow. Second operand 24 states and 442 transitions. [2024-11-19 01:43:49,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 85 transitions, 490 flow [2024-11-19 01:43:49,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 85 transitions, 418 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-11-19 01:43:49,649 INFO L231 Difference]: Finished difference. Result has 119 places, 85 transitions, 374 flow [2024-11-19 01:43:49,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=374, PETRI_PLACES=119, PETRI_TRANSITIONS=85} [2024-11-19 01:43:49,650 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 56 predicate places. [2024-11-19 01:43:49,651 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 85 transitions, 374 flow [2024-11-19 01:43:49,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.192307692307693) internal successors, (421), 26 states have internal predecessors, (421), 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) [2024-11-19 01:43:49,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:49,651 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2024-11-19 01:43:49,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:43:49,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:49,852 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:43:49,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:49,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1553475261, now seen corresponding path program 4 times [2024-11-19 01:43:49,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:49,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127509954] [2024-11-19 01:43:49,853 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:43:49,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:50,083 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:43:50,084 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:43:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:51,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:51,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127509954] [2024-11-19 01:43:51,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127509954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:51,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665753538] [2024-11-19 01:43:51,994 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:43:51,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:51,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:43:51,995 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) [2024-11-19 01:43:51,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:43:52,962 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:43:52,962 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:43:52,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 4835 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 01:43:52,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:43:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:53,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:43:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:43:53,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665753538] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:43:53,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:43:53,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2024-11-19 01:43:53,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554554006] [2024-11-19 01:43:53,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:43:53,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-19 01:43:53,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:53,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-19 01:43:53,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-19 01:43:53,678 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-11-19 01:43:53,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 85 transitions, 374 flow. Second operand has 49 states, 49 states have (on average 16.081632653061224) internal successors, (788), 49 states have internal predecessors, (788), 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) [2024-11-19 01:43:53,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:53,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-11-19 01:43:53,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand