./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/spaghetti.wvr.c --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/weaver/spaghetti.wvr.c -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 8451430e4d69b133c41912667dded61d19a596175a4065b8a2219f0d75763fd8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:54:50,452 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:54:50,508 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:54:50,511 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:54:50,511 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:54:50,525 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:54:50,525 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:54:50,526 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:54:50,526 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:54:50,526 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:54:50,527 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:54:50,527 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:54:50,527 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:54:50,528 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:54:50,528 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:54:50,528 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:54:50,528 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:54:50,529 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:54:50,529 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:54:50,529 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:54:50,530 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:54:50,530 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:54:50,530 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:54:50,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:54:50,531 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:54:50,531 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:54:50,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:54:50,532 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:54:50,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:54:50,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:54:50,532 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:54:50,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:54:50,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:54:50,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:54:50,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:54:50,534 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:54:50,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:54:50,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:54:50,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:54:50,535 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:54:50,535 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:54:50,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:54:50,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:54:50,536 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8451430e4d69b133c41912667dded61d19a596175a4065b8a2219f0d75763fd8 [2024-01-27 15:54:50,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:54:50,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:54:50,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:54:50,728 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:54:50,728 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:54:50,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/spaghetti.wvr.c [2024-01-27 15:54:51,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:54:51,920 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:54:51,921 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c [2024-01-27 15:54:51,930 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9be2518de/ca105ea54eed4463b8d22c1df18fdd52/FLAGf6036c5b2 [2024-01-27 15:54:51,946 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9be2518de/ca105ea54eed4463b8d22c1df18fdd52 [2024-01-27 15:54:51,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:54:51,950 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:54:51,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:54:51,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:54:51,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:54:51,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:54:51" (1/1) ... [2024-01-27 15:54:51,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd65b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:54:51, skipping insertion in model container [2024-01-27 15:54:51,958 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:54:51" (1/1) ... [2024-01-27 15:54:51,980 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:54:52,113 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c[3273,3286] [2024-01-27 15:54:52,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:54:52,128 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:54:52,142 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c[3273,3286] [2024-01-27 15:54:52,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:54:52,154 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:54:52,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:54:52 WrapperNode [2024-01-27 15:54:52,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:54:52,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:54:52,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:54:52,155 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:54:52,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:54:52" (1/1) ... [2024-01-27 15:54:52,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:54:52" (1/1) ... [2024-01-27 15:54:52,198 INFO L138 Inliner]: procedures = 23, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2024-01-27 15:54:52,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:54:52,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:54:52,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:54:52,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:54:52,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:54:52" (1/1) ... [2024-01-27 15:54:52,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:54:52" (1/1) ... [2024-01-27 15:54:52,219 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:54:52" (1/1) ... [2024-01-27 15:54:52,244 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-27 15:54:52,244 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:54:52" (1/1) ... [2024-01-27 15:54:52,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:54:52" (1/1) ... [2024-01-27 15:54:52,249 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:54:52" (1/1) ... [2024-01-27 15:54:52,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:54:52" (1/1) ... [2024-01-27 15:54:52,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:54:52" (1/1) ... [2024-01-27 15:54:52,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:54:52" (1/1) ... [2024-01-27 15:54:52,268 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:54:52,269 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:54:52,269 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:54:52,269 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:54:52,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:54:52" (1/1) ... [2024-01-27 15:54:52,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:54:52,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:54:52,303 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 15:54:52,309 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 15:54:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:54:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:54:52,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:54:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:54:52,343 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:54:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:54:52,343 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:54:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-27 15:54:52,344 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-27 15:54:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:54:52,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:54:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:54:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:54:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:54:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:54:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:54:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:54:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:54:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:54:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:54:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:54:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:54:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:54:52,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:54:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:54:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:54:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:54:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:54:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:54:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:54:52,374 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 15:54:52,485 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:54:52,487 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:54:52,635 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:54:52,635 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:54:52,731 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:54:52,731 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-27 15:54:52,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:54:52 BoogieIcfgContainer [2024-01-27 15:54:52,732 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:54:52,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:54:52,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:54:52,736 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:54:52,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:54:51" (1/3) ... [2024-01-27 15:54:52,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66354cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:54:52, skipping insertion in model container [2024-01-27 15:54:52,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:54:52" (2/3) ... [2024-01-27 15:54:52,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66354cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:54:52, skipping insertion in model container [2024-01-27 15:54:52,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:54:52" (3/3) ... [2024-01-27 15:54:52,744 INFO L112 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2024-01-27 15:54:52,750 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:54:52,756 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:54:52,756 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:54:52,757 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:54:52,793 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-27 15:54:52,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 150 flow [2024-01-27 15:54:52,844 INFO L124 PetriNetUnfolderBase]: 8/57 cut-off events. [2024-01-27 15:54:52,844 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:54:52,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 57 events. 8/57 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-01-27 15:54:52,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 61 transitions, 150 flow [2024-01-27 15:54:52,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 56 transitions, 136 flow [2024-01-27 15:54:52,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:54:52,862 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;@5a37b3e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:54:52,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-27 15:54:52,875 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:54:52,875 INFO L124 PetriNetUnfolderBase]: 8/55 cut-off events. [2024-01-27 15:54:52,875 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:54:52,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:54:52,875 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:54:52,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:54:52,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:54:52,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1067597777, now seen corresponding path program 1 times [2024-01-27 15:54:52,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:54:52,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115320801] [2024-01-27 15:54:52,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:54:52,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:54:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:54:53,071 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 15:54:53,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:54:53,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115320801] [2024-01-27 15:54:53,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115320801] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:54:53,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:54:53,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:54:53,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709886492] [2024-01-27 15:54:53,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:54:53,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-27 15:54:53,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:54:53,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-27 15:54:53,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-27 15:54:53,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-01-27 15:54:53,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 136 flow. Second operand has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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 15:54:53,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:54:53,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-01-27 15:54:53,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:54:53,701 INFO L124 PetriNetUnfolderBase]: 4024/6317 cut-off events. [2024-01-27 15:54:53,701 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-01-27 15:54:53,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11864 conditions, 6317 events. 4024/6317 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 42319 event pairs, 3057 based on Foata normal form. 1370/5918 useless extension candidates. Maximal degree in co-relation 10294. Up to 5185 conditions per place. [2024-01-27 15:54:53,743 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 31 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2024-01-27 15:54:53,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 52 transitions, 190 flow [2024-01-27 15:54:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-27 15:54:53,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-27 15:54:53,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 85 transitions. [2024-01-27 15:54:53,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6967213114754098 [2024-01-27 15:54:53,755 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 136 flow. Second operand 2 states and 85 transitions. [2024-01-27 15:54:53,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 52 transitions, 190 flow [2024-01-27 15:54:53,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 174 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-27 15:54:53,769 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 112 flow [2024-01-27 15:54:53,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=112, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2024-01-27 15:54:53,775 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -7 predicate places. [2024-01-27 15:54:53,776 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 112 flow [2024-01-27 15:54:53,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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 15:54:53,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:54:53,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:54:53,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:54:53,777 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:54:53,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:54:53,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2070224299, now seen corresponding path program 1 times [2024-01-27 15:54:53,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:54:53,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273195617] [2024-01-27 15:54:53,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:54:53,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:54:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:54:54,115 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 15:54:54,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:54:54,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273195617] [2024-01-27 15:54:54,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273195617] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:54:54,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:54:54,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:54:54,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105599424] [2024-01-27 15:54:54,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:54:54,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:54:54,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:54:54,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:54:54,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:54:54,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 61 [2024-01-27 15:54:54,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 15:54:54,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:54:54,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 61 [2024-01-27 15:54:54,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:54:55,211 INFO L124 PetriNetUnfolderBase]: 16090/21999 cut-off events. [2024-01-27 15:54:55,212 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-01-27 15:54:55,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43702 conditions, 21999 events. 16090/21999 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 1400. Compared 139007 event pairs, 5040 based on Foata normal form. 1/17518 useless extension candidates. Maximal degree in co-relation 43699. Up to 8634 conditions per place. [2024-01-27 15:54:55,315 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 82 selfloop transitions, 10 changer transitions 1/108 dead transitions. [2024-01-27 15:54:55,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 108 transitions, 418 flow [2024-01-27 15:54:55,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:54:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:54:55,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-01-27 15:54:55,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6967213114754098 [2024-01-27 15:54:55,321 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 112 flow. Second operand 4 states and 170 transitions. [2024-01-27 15:54:55,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 108 transitions, 418 flow [2024-01-27 15:54:55,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 108 transitions, 418 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:54:55,327 INFO L231 Difference]: Finished difference. Result has 60 places, 62 transitions, 190 flow [2024-01-27 15:54:55,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=60, PETRI_TRANSITIONS=62} [2024-01-27 15:54:55,327 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2024-01-27 15:54:55,328 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 62 transitions, 190 flow [2024-01-27 15:54:55,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 15:54:55,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:54:55,329 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:54:55,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:54:55,333 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:54:55,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:54:55,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1685209187, now seen corresponding path program 2 times [2024-01-27 15:54:55,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:54:55,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387301951] [2024-01-27 15:54:55,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:54:55,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:54:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:54:55,599 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 15:54:55,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:54:55,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387301951] [2024-01-27 15:54:55,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387301951] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:54:55,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:54:55,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:54:55,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576979494] [2024-01-27 15:54:55,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:54:55,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:54:55,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:54:55,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:54:55,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:54:55,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 61 [2024-01-27 15:54:55,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 62 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 15:54:55,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:54:55,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 61 [2024-01-27 15:54:55,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:54:56,847 INFO L124 PetriNetUnfolderBase]: 19480/27096 cut-off events. [2024-01-27 15:54:56,848 INFO L125 PetriNetUnfolderBase]: For 9353/9353 co-relation queries the response was YES. [2024-01-27 15:54:56,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63044 conditions, 27096 events. 19480/27096 cut-off events. For 9353/9353 co-relation queries the response was YES. Maximal size of possible extension queue 1693. Compared 177375 event pairs, 6452 based on Foata normal form. 1/21956 useless extension candidates. Maximal degree in co-relation 63038. Up to 11826 conditions per place. [2024-01-27 15:54:56,906 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 0 selfloop transitions, 0 changer transitions 124/124 dead transitions. [2024-01-27 15:54:56,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 124 transitions, 608 flow [2024-01-27 15:54:56,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:54:56,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:54:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-01-27 15:54:56,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6926229508196722 [2024-01-27 15:54:56,910 INFO L175 Difference]: Start difference. First operand has 60 places, 62 transitions, 190 flow. Second operand 4 states and 169 transitions. [2024-01-27 15:54:56,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 124 transitions, 608 flow [2024-01-27 15:54:56,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 124 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:54:56,915 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2024-01-27 15:54:56,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2024-01-27 15:54:56,916 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-01-27 15:54:56,917 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2024-01-27 15:54:56,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 15:54:56,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-01-27 15:54:56,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2024-01-27 15:54:56,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-01-27 15:54:56,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-01-27 15:54:56,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-01-27 15:54:56,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:54:56,921 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2024-01-27 15:54:56,924 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:54:56,924 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:54:56,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:54:56 BasicIcfg [2024-01-27 15:54:56,932 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:54:56,933 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:54:56,933 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:54:56,933 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:54:56,933 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:54:52" (3/4) ... [2024-01-27 15:54:56,935 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:54:56,937 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-01-27 15:54:56,937 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-01-27 15:54:56,937 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-01-27 15:54:56,938 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2024-01-27 15:54:56,943 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 59 nodes and edges [2024-01-27 15:54:56,943 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-01-27 15:54:56,943 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-01-27 15:54:56,944 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-01-27 15:54:57,014 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:54:57,014 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:54:57,014 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:54:57,015 INFO L158 Benchmark]: Toolchain (without parser) took 5065.08ms. Allocated memory was 195.0MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 127.3MB in the beginning and 1.1GB in the end (delta: -939.1MB). Peak memory consumption was 259.1MB. Max. memory is 16.1GB. [2024-01-27 15:54:57,015 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 109.1MB. Free memory was 80.8MB in the beginning and 80.7MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:54:57,015 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.93ms. Allocated memory is still 195.0MB. Free memory was 127.1MB in the beginning and 115.2MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-01-27 15:54:57,016 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.42ms. Allocated memory is still 195.0MB. Free memory was 115.2MB in the beginning and 113.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:54:57,016 INFO L158 Benchmark]: Boogie Preprocessor took 68.11ms. Allocated memory is still 195.0MB. Free memory was 113.6MB in the beginning and 111.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:54:57,016 INFO L158 Benchmark]: RCFGBuilder took 463.31ms. Allocated memory is still 195.0MB. Free memory was 111.0MB in the beginning and 142.2MB in the end (delta: -31.2MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2024-01-27 15:54:57,016 INFO L158 Benchmark]: TraceAbstraction took 4198.94ms. Allocated memory was 195.0MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 141.8MB in the beginning and 1.1GB in the end (delta: -928.8MB). Peak memory consumption was 465.8MB. Max. memory is 16.1GB. [2024-01-27 15:54:57,017 INFO L158 Benchmark]: Witness Printer took 81.92ms. Allocated memory is still 1.4GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:54:57,018 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 109.1MB. Free memory was 80.8MB in the beginning and 80.7MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 203.93ms. Allocated memory is still 195.0MB. Free memory was 127.1MB in the beginning and 115.2MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.42ms. Allocated memory is still 195.0MB. Free memory was 115.2MB in the beginning and 113.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 68.11ms. Allocated memory is still 195.0MB. Free memory was 113.6MB in the beginning and 111.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 463.31ms. Allocated memory is still 195.0MB. Free memory was 111.0MB in the beginning and 142.2MB in the end (delta: -31.2MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4198.94ms. Allocated memory was 195.0MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 141.8MB in the beginning and 1.1GB in the end (delta: -928.8MB). Peak memory consumption was 465.8MB. Max. memory is 16.1GB. * Witness Printer took 81.92ms. Allocated memory is still 1.4GB. Free memory was 1.1GB in the beginning and 1.1GB 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: 127]: 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 9 procedures, 92 locations, 5 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: 4.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 111 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 358 IncrementalHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 18 mSDtfsCounter, 358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=2, InterpolantAutomatonStates: 10, 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, 0.5s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 257 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 15:54:57,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE