./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-time-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/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/chl-time-symm.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.graphml --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 72bbcf79bf9ab9dc66dc1f84247eb131a6de5c94da8e4a071481d48ca23ad8fa --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 01:30:21,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:30:21,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:30:21,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:30:21,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:30:21,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:30:21,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:30:21,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:30:21,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:30:21,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:30:21,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:30:21,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:30:21,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:30:21,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:30:21,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:30:21,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:30:21,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:30:21,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:30:21,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:30:21,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:30:21,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:30:21,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:30:21,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:30:21,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:30:21,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:30:21,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:30:21,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:30:21,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:30:21,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:30:21,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:30:21,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:30:21,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:30:21,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:30:21,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:30:21,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:30:21,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:30:21,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:30:21,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:30:21,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:30:21,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:30:21,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:30:21,266 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:30:21,292 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:30:21,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:30:21,293 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:30:21,293 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:30:21,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:30:21,294 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:30:21,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:30:21,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:30:21,295 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:30:21,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:30:21,296 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:30:21,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:30:21,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:30:21,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:30:21,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:30:21,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:30:21,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:30:21,297 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:30:21,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:30:21,297 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:30:21,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:30:21,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:30:21,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:30:21,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:30:21,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:30:21,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:30:21,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:30:21,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:30:21,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:30:21,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:30:21,299 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:30:21,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:30:21,299 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:30:21,299 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:30:21,299 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:30:21,300 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72bbcf79bf9ab9dc66dc1f84247eb131a6de5c94da8e4a071481d48ca23ad8fa Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:30:21,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:30:21,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:30:21,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:30:21,550 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:30:21,551 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:30:21,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-time-symm.wvr.c [2023-08-31 01:30:22,543 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:30:22,709 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:30:22,709 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-symm.wvr.c [2023-08-31 01:30:22,720 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/361b45f29/aaeed1af549a40acb27de73dcb39cec8/FLAGfdcfd5ef1 [2023-08-31 01:30:23,103 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/361b45f29/aaeed1af549a40acb27de73dcb39cec8 [2023-08-31 01:30:23,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:30:23,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:30:23,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:30:23,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:30:23,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:30:23,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:30:23" (1/1) ... [2023-08-31 01:30:23,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1953712f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:23, skipping insertion in model container [2023-08-31 01:30:23,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:30:23" (1/1) ... [2023-08-31 01:30:23,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:30:23,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:30:23,220 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-symm.wvr.c[2494,2507] [2023-08-31 01:30:23,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:30:23,232 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:30:23,244 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-symm.wvr.c[2494,2507] [2023-08-31 01:30:23,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:30:23,250 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 01:30:23,250 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 01:30:23,254 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:30:23,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:23 WrapperNode [2023-08-31 01:30:23,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:30:23,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:30:23,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:30:23,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:30:23,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:23" (1/1) ... [2023-08-31 01:30:23,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:23" (1/1) ... [2023-08-31 01:30:23,287 INFO L138 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 9, calls inlined = 15, statements flattened = 154 [2023-08-31 01:30:23,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:30:23,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:30:23,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:30:23,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:30:23,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:23" (1/1) ... [2023-08-31 01:30:23,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:23" (1/1) ... [2023-08-31 01:30:23,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:23" (1/1) ... [2023-08-31 01:30:23,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:23" (1/1) ... [2023-08-31 01:30:23,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:23" (1/1) ... [2023-08-31 01:30:23,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:23" (1/1) ... [2023-08-31 01:30:23,319 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:23" (1/1) ... [2023-08-31 01:30:23,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:23" (1/1) ... [2023-08-31 01:30:23,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:30:23,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:30:23,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:30:23,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:30:23,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:23" (1/1) ... [2023-08-31 01:30:23,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:30:23,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:30:23,347 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 01:30:23,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 01:30:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:30:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:30:23,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:30:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:30:23,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:30:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:30:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:30:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:30:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 01:30:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 01:30:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:30:23,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:30:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:30:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:30:23,369 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:30:23,428 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:30:23,429 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:30:23,652 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:30:23,845 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:30:23,845 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 01:30:23,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:30:23 BoogieIcfgContainer [2023-08-31 01:30:23,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:30:23,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:30:23,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:30:23,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:30:23,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:30:23" (1/3) ... [2023-08-31 01:30:23,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8be183e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:30:23, skipping insertion in model container [2023-08-31 01:30:23,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:23" (2/3) ... [2023-08-31 01:30:23,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8be183e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:30:23, skipping insertion in model container [2023-08-31 01:30:23,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:30:23" (3/3) ... [2023-08-31 01:30:23,854 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-time-symm.wvr.c [2023-08-31 01:30:23,859 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:30:23,866 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:30:23,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:30:23,867 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:30:23,917 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 01:30:23,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 83 transitions, 182 flow [2023-08-31 01:30:23,984 INFO L130 PetriNetUnfolder]: 1/81 cut-off events. [2023-08-31 01:30:23,989 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:30:23,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 1/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2023-08-31 01:30:23,994 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 83 transitions, 182 flow [2023-08-31 01:30:23,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 73 transitions, 158 flow [2023-08-31 01:30:23,998 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:30:24,004 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 73 transitions, 158 flow [2023-08-31 01:30:24,005 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 73 transitions, 158 flow [2023-08-31 01:30:24,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 73 transitions, 158 flow [2023-08-31 01:30:24,019 INFO L130 PetriNetUnfolder]: 1/73 cut-off events. [2023-08-31 01:30:24,019 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:30:24,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 73 events. 1/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 16. Up to 2 conditions per place. [2023-08-31 01:30:24,020 INFO L119 LiptonReduction]: Number of co-enabled transitions 108 [2023-08-31 01:30:26,594 INFO L134 LiptonReduction]: Checked pairs total: 156 [2023-08-31 01:30:26,594 INFO L136 LiptonReduction]: Total number of compositions: 67 [2023-08-31 01:30:26,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:30:26,607 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=LoopsAndPotentialCycles, 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;@770a525d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:30:26,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-31 01:30:26,611 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2023-08-31 01:30:26,611 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:30:26,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:30:26,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:30:26,612 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:30:26,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:30:26,615 INFO L85 PathProgramCache]: Analyzing trace with hash -316601201, now seen corresponding path program 1 times [2023-08-31 01:30:26,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:30:26,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488222452] [2023-08-31 01:30:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:26,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:30:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:30:27,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:30:27,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488222452] [2023-08-31 01:30:27,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488222452] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:30:27,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:30:27,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:30:27,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159029136] [2023-08-31 01:30:27,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:30:27,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:30:27,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:30:27,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:30:27,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:30:27,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 150 [2023-08-31 01:30:27,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2023-08-31 01:30:27,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:30:27,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 150 [2023-08-31 01:30:27,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:30:27,473 INFO L130 PetriNetUnfolder]: 8/32 cut-off events. [2023-08-31 01:30:27,473 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 01:30:27,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 32 events. 8/32 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 1 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 45. Up to 16 conditions per place. [2023-08-31 01:30:27,474 INFO L137 encePairwiseOnDemand]: 147/150 looper letters, 11 selfloop transitions, 1 changer transitions 7/19 dead transitions. [2023-08-31 01:30:27,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 97 flow [2023-08-31 01:30:27,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:30:27,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:30:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2023-08-31 01:30:27,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2023-08-31 01:30:27,483 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 272 transitions. [2023-08-31 01:30:27,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 272 transitions. [2023-08-31 01:30:27,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:30:27,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 272 transitions. [2023-08-31 01:30:27,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-08-31 01:30:27,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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) [2023-08-31 01:30:27,492 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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) [2023-08-31 01:30:27,493 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 34 flow. Second operand 4 states and 272 transitions. [2023-08-31 01:30:27,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 97 flow [2023-08-31 01:30:27,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 19 transitions, 83 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 01:30:27,496 INFO L231 Difference]: Finished difference. Result has 19 places, 11 transitions, 33 flow [2023-08-31 01:30:27,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=33, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2023-08-31 01:30:27,499 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2023-08-31 01:30:27,499 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 33 flow [2023-08-31 01:30:27,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2023-08-31 01:30:27,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:30:27,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:30:27,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:30:27,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:30:27,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:30:27,501 INFO L85 PathProgramCache]: Analyzing trace with hash -476994931, now seen corresponding path program 2 times [2023-08-31 01:30:27,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:30:27,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128787145] [2023-08-31 01:30:27,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:27,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:30:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:30:27,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:30:27,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128787145] [2023-08-31 01:30:27,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128787145] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:30:27,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:30:27,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:30:27,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040703078] [2023-08-31 01:30:27,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:30:27,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:30:27,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:30:27,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:30:27,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:30:27,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 150 [2023-08-31 01:30:27,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 33 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2023-08-31 01:30:27,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:30:27,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 150 [2023-08-31 01:30:27,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:30:27,963 INFO L130 PetriNetUnfolder]: 5/23 cut-off events. [2023-08-31 01:30:27,964 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-31 01:30:27,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 23 events. 5/23 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 3 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 57. Up to 15 conditions per place. [2023-08-31 01:30:27,964 INFO L137 encePairwiseOnDemand]: 147/150 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2023-08-31 01:30:27,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 15 transitions, 73 flow [2023-08-31 01:30:27,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:30:27,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:30:27,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 268 transitions. [2023-08-31 01:30:27,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44666666666666666 [2023-08-31 01:30:27,969 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 268 transitions. [2023-08-31 01:30:27,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 268 transitions. [2023-08-31 01:30:27,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:30:27,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 268 transitions. [2023-08-31 01:30:27,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 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) [2023-08-31 01:30:27,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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) [2023-08-31 01:30:27,974 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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) [2023-08-31 01:30:27,974 INFO L175 Difference]: Start difference. First operand has 19 places, 11 transitions, 33 flow. Second operand 4 states and 268 transitions. [2023-08-31 01:30:27,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 15 transitions, 73 flow [2023-08-31 01:30:27,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 71 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:30:27,975 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-31 01:30:27,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-31 01:30:27,976 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2023-08-31 01:30:27,976 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-31 01:30:27,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2023-08-31 01:30:27,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-31 01:30:27,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-31 01:30:27,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-31 01:30:27,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 01:30:27,981 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2023-08-31 01:30:27,985 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 01:30:27,994 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 01:30:28,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 01:30:28 BasicIcfg [2023-08-31 01:30:28,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 01:30:28,003 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 01:30:28,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 01:30:28,003 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 01:30:28,003 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:30:23" (3/4) ... [2023-08-31 01:30:28,006 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 01:30:28,010 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-31 01:30:28,010 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-31 01:30:28,014 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-08-31 01:30:28,015 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 01:30:28,015 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-31 01:30:28,015 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 01:30:28,052 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 01:30:28,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 01:30:28,053 INFO L158 Benchmark]: Toolchain (without parser) took 4946.77ms. Allocated memory was 60.8MB in the beginning and 132.1MB in the end (delta: 71.3MB). Free memory was 38.1MB in the beginning and 105.1MB in the end (delta: -67.0MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2023-08-31 01:30:28,053 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory was 28.5MB in the beginning and 28.5MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 01:30:28,053 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.73ms. Allocated memory is still 60.8MB. Free memory was 37.9MB in the beginning and 27.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-31 01:30:28,054 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.74ms. Allocated memory is still 60.8MB. Free memory was 26.8MB in the beginning and 40.6MB in the end (delta: -13.9MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2023-08-31 01:30:28,054 INFO L158 Benchmark]: Boogie Preprocessor took 33.39ms. Allocated memory is still 60.8MB. Free memory was 40.6MB in the beginning and 39.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:30:28,054 INFO L158 Benchmark]: RCFGBuilder took 525.18ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 39.3MB in the beginning and 38.6MB in the end (delta: 683.6kB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2023-08-31 01:30:28,054 INFO L158 Benchmark]: TraceAbstraction took 4154.23ms. Allocated memory was 73.4MB in the beginning and 132.1MB in the end (delta: 58.7MB). Free memory was 38.2MB in the beginning and 107.3MB in the end (delta: -69.1MB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. [2023-08-31 01:30:28,055 INFO L158 Benchmark]: Witness Printer took 49.38ms. Allocated memory is still 132.1MB. Free memory was 107.3MB in the beginning and 105.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:30:28,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory was 28.5MB in the beginning and 28.5MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 149.73ms. Allocated memory is still 60.8MB. Free memory was 37.9MB in the beginning and 27.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.74ms. Allocated memory is still 60.8MB. Free memory was 26.8MB in the beginning and 40.6MB in the end (delta: -13.9MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.39ms. Allocated memory is still 60.8MB. Free memory was 40.6MB in the beginning and 39.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 525.18ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 39.3MB in the beginning and 38.6MB in the end (delta: 683.6kB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4154.23ms. Allocated memory was 73.4MB in the beginning and 132.1MB in the end (delta: 58.7MB). Free memory was 38.2MB in the beginning and 107.3MB in the end (delta: -69.1MB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. * Witness Printer took 49.38ms. Allocated memory is still 132.1MB. Free memory was 107.3MB in the beginning and 105.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 79 PlacesBefore, 18 PlacesAfterwards, 73 TransitionsBefore, 11 TransitionsAfterwards, 108 CoEnabledTransitionPairs, 7 FixpointIterations, 52 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 67 TotalNumberOfCompositions, 156 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 156, independent: 156, independent conditional: 0, independent unconditional: 156, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 62, independent: 62, independent conditional: 0, independent unconditional: 62, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 156, independent: 94, independent conditional: 0, independent unconditional: 94, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 62, unknown conditional: 0, unknown unconditional: 62] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 80]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 93 locations, 3 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: 4.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 136 IncrementalHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 16 mSDtfsCounter, 136 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2023-08-31 01:30:28,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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