./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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 ../sv-benchmarks/c/pthread-atomic/szymanski.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.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 bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:34:55,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:34:55,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:34:55,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:34:55,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:34:55,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:34:55,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:34:55,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:34:55,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:34:55,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:34:55,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:34:55,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:34:55,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:34:55,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:34:55,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:34:55,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:34:55,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:34:55,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:34:55,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:34:55,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:34:55,332 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:34:55,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:34:55,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:34:55,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:34:55,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:34:55,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:34:55,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:34:55,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:34:55,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:34:55,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:34:55,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:34:55,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:34:55,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:34:55,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:34:55,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:34:55,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:34:55,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:34:55,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:34:55,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:34:55,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:34:55,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:34:55,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:34:55,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:34:55,391 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:34:55,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:34:55,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:34:55,392 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:34:55,393 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:34:55,393 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:34:55,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:34:55,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:34:55,394 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:34:55,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:34:55,395 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:34:55,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:34:55,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:34:55,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:34:55,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:34:55,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:34:55,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:34:55,396 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:34:55,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:34:55,397 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:34:55,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:34:55,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:34:55,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:34:55,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:34:55,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:34:55,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:34:55,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:34:55,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:34:55,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:34:55,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:34:55,399 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:34:55,399 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:34:55,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:34:55,400 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 [2022-07-21 08:34:55,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:34:55,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:34:55,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:34:55,729 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:34:55,729 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:34:55,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/szymanski.i [2022-07-21 08:34:55,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b261f85/2c6a6d5c169448fd83dc72222dda17c0/FLAGa1ad979f4 [2022-07-21 08:34:56,286 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:34:56,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i [2022-07-21 08:34:56,305 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b261f85/2c6a6d5c169448fd83dc72222dda17c0/FLAGa1ad979f4 [2022-07-21 08:34:56,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b261f85/2c6a6d5c169448fd83dc72222dda17c0 [2022-07-21 08:34:56,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:34:56,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:34:56,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:34:56,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:34:56,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:34:56,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:34:56" (1/1) ... [2022-07-21 08:34:56,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d46be70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:56, skipping insertion in model container [2022-07-21 08:34:56,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:34:56" (1/1) ... [2022-07-21 08:34:56,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:34:56,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:34:56,841 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-21 08:34:56,946 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2022-07-21 08:34:56,953 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2022-07-21 08:34:56,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:34:56,969 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:34:56,990 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-21 08:34:57,033 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2022-07-21 08:34:57,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2022-07-21 08:34:57,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:34:57,077 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:34:57,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:57 WrapperNode [2022-07-21 08:34:57,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:34:57,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:34:57,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:34:57,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:34:57,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:57" (1/1) ... [2022-07-21 08:34:57,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:57" (1/1) ... [2022-07-21 08:34:57,123 INFO L137 Inliner]: procedures = 171, calls = 75, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-07-21 08:34:57,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:34:57,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:34:57,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:34:57,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:34:57,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:57" (1/1) ... [2022-07-21 08:34:57,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:57" (1/1) ... [2022-07-21 08:34:57,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:57" (1/1) ... [2022-07-21 08:34:57,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:57" (1/1) ... [2022-07-21 08:34:57,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:57" (1/1) ... [2022-07-21 08:34:57,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:57" (1/1) ... [2022-07-21 08:34:57,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:57" (1/1) ... [2022-07-21 08:34:57,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:34:57,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:34:57,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:34:57,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:34:57,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:57" (1/1) ... [2022-07-21 08:34:57,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:34:57,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:34:57,203 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) [2022-07-21 08:34:57,220 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 [2022-07-21 08:34:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:34:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-07-21 08:34:57,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-07-21 08:34:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-21 08:34:57,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-21 08:34:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:34:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 08:34:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:34:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:34:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:34:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:34:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 08:34:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:34:57,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:34:57,252 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:34:57,375 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:34:57,377 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:34:57,587 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:34:57,593 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:34:57,598 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-21 08:34:57,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:34:57 BoogieIcfgContainer [2022-07-21 08:34:57,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:34:57,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:34:57,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:34:57,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:34:57,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:34:56" (1/3) ... [2022-07-21 08:34:57,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abaa6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:34:57, skipping insertion in model container [2022-07-21 08:34:57,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:57" (2/3) ... [2022-07-21 08:34:57,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abaa6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:34:57, skipping insertion in model container [2022-07-21 08:34:57,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:34:57" (3/3) ... [2022-07-21 08:34:57,609 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2022-07-21 08:34:57,613 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:34:57,621 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:34:57,621 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:34:57,622 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:34:57,706 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 08:34:57,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 117 transitions, 250 flow [2022-07-21 08:34:57,811 INFO L129 PetriNetUnfolder]: 20/115 cut-off events. [2022-07-21 08:34:57,813 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:34:57,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 115 events. 20/115 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2022-07-21 08:34:57,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 117 transitions, 250 flow [2022-07-21 08:34:57,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 105 transitions, 219 flow [2022-07-21 08:34:57,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:34:57,838 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@792ade63, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@25e26e71 [2022-07-21 08:34:57,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-21 08:34:57,852 INFO L129 PetriNetUnfolder]: 11/70 cut-off events. [2022-07-21 08:34:57,852 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:34:57,853 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:57,853 INFO L200 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] [2022-07-21 08:34:57,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:34:57,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:57,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1091210277, now seen corresponding path program 1 times [2022-07-21 08:34:57,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:57,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598795465] [2022-07-21 08:34:57,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:57,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:58,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:58,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598795465] [2022-07-21 08:34:58,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598795465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:58,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:58,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:34:58,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959910982] [2022-07-21 08:34:58,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:58,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 08:34:58,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:58,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 08:34:58,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:34:58,127 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 117 [2022-07-21 08:34:58,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 105 transitions, 219 flow. Second operand has 2 states, 2 states have (on average 104.0) internal successors, (208), 2 states have internal predecessors, (208), 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) [2022-07-21 08:34:58,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:58,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 117 [2022-07-21 08:34:58,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:58,192 INFO L129 PetriNetUnfolder]: 10/95 cut-off events. [2022-07-21 08:34:58,192 INFO L130 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-07-21 08:34:58,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 95 events. 10/95 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 138 event pairs, 0 based on Foata normal form. 16/99 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2022-07-21 08:34:58,195 INFO L132 encePairwiseOnDemand]: 107/117 looper letters, 3 selfloop transitions, 0 changer transitions 0/95 dead transitions. [2022-07-21 08:34:58,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 95 transitions, 205 flow [2022-07-21 08:34:58,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 08:34:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-21 08:34:58,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 219 transitions. [2022-07-21 08:34:58,217 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9358974358974359 [2022-07-21 08:34:58,218 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 219 transitions. [2022-07-21 08:34:58,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 219 transitions. [2022-07-21 08:34:58,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:58,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 219 transitions. [2022-07-21 08:34:58,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 109.5) internal successors, (219), 2 states have internal predecessors, (219), 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) [2022-07-21 08:34:58,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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) [2022-07-21 08:34:58,233 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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) [2022-07-21 08:34:58,235 INFO L186 Difference]: Start difference. First operand has 92 places, 105 transitions, 219 flow. Second operand 2 states and 219 transitions. [2022-07-21 08:34:58,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 95 transitions, 205 flow [2022-07-21 08:34:58,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 95 transitions, 200 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-21 08:34:58,243 INFO L242 Difference]: Finished difference. Result has 90 places, 95 transitions, 194 flow [2022-07-21 08:34:58,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=194, PETRI_PLACES=90, PETRI_TRANSITIONS=95} [2022-07-21 08:34:58,249 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, -2 predicate places. [2022-07-21 08:34:58,249 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 95 transitions, 194 flow [2022-07-21 08:34:58,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 104.0) internal successors, (208), 2 states have internal predecessors, (208), 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) [2022-07-21 08:34:58,250 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:58,250 INFO L200 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] [2022-07-21 08:34:58,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:34:58,251 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:34:58,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:58,252 INFO L85 PathProgramCache]: Analyzing trace with hash 894696772, now seen corresponding path program 1 times [2022-07-21 08:34:58,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:58,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661422850] [2022-07-21 08:34:58,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:58,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:58,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:58,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661422850] [2022-07-21 08:34:58,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661422850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:58,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:58,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:34:58,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958907005] [2022-07-21 08:34:58,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:58,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:34:58,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:58,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:34:58,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:34:58,375 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 117 [2022-07-21 08:34:58,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 95 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2022-07-21 08:34:58,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:58,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 117 [2022-07-21 08:34:58,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:58,454 INFO L129 PetriNetUnfolder]: 34/213 cut-off events. [2022-07-21 08:34:58,454 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-21 08:34:58,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 213 events. 34/213 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 698 event pairs, 4 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 265. Up to 24 conditions per place. [2022-07-21 08:34:58,459 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 11 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2022-07-21 08:34:58,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 99 transitions, 231 flow [2022-07-21 08:34:58,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:34:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:34:58,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2022-07-21 08:34:58,465 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8660968660968661 [2022-07-21 08:34:58,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2022-07-21 08:34:58,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2022-07-21 08:34:58,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:58,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2022-07-21 08:34:58,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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) [2022-07-21 08:34:58,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2022-07-21 08:34:58,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2022-07-21 08:34:58,471 INFO L186 Difference]: Start difference. First operand has 90 places, 95 transitions, 194 flow. Second operand 3 states and 304 transitions. [2022-07-21 08:34:58,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 99 transitions, 231 flow [2022-07-21 08:34:58,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 99 transitions, 231 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:34:58,474 INFO L242 Difference]: Finished difference. Result has 94 places, 96 transitions, 214 flow [2022-07-21 08:34:58,475 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2022-07-21 08:34:58,476 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 2 predicate places. [2022-07-21 08:34:58,476 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 214 flow [2022-07-21 08:34:58,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2022-07-21 08:34:58,477 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:58,477 INFO L200 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, 1, 1] [2022-07-21 08:34:58,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:34:58,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:34:58,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:58,480 INFO L85 PathProgramCache]: Analyzing trace with hash 378899323, now seen corresponding path program 1 times [2022-07-21 08:34:58,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:58,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212339291] [2022-07-21 08:34:58,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:58,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:58,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:58,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212339291] [2022-07-21 08:34:58,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212339291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:58,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:58,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:34:58,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401060304] [2022-07-21 08:34:58,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:58,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:34:58,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:58,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:34:58,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:34:58,529 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 117 [2022-07-21 08:34:58,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2022-07-21 08:34:58,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:58,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 117 [2022-07-21 08:34:58,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:58,567 INFO L129 PetriNetUnfolder]: 27/191 cut-off events. [2022-07-21 08:34:58,567 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-07-21 08:34:58,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 191 events. 27/191 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 589 event pairs, 5 based on Foata normal form. 7/174 useless extension candidates. Maximal degree in co-relation 255. Up to 22 conditions per place. [2022-07-21 08:34:58,569 INFO L132 encePairwiseOnDemand]: 113/117 looper letters, 10 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2022-07-21 08:34:58,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 241 flow [2022-07-21 08:34:58,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:34:58,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:34:58,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2022-07-21 08:34:58,571 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8603988603988604 [2022-07-21 08:34:58,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2022-07-21 08:34:58,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2022-07-21 08:34:58,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:58,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2022-07-21 08:34:58,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2022-07-21 08:34:58,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2022-07-21 08:34:58,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2022-07-21 08:34:58,574 INFO L186 Difference]: Start difference. First operand has 94 places, 96 transitions, 214 flow. Second operand 3 states and 302 transitions. [2022-07-21 08:34:58,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 241 flow [2022-07-21 08:34:58,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 235 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:34:58,577 INFO L242 Difference]: Finished difference. Result has 95 places, 96 transitions, 218 flow [2022-07-21 08:34:58,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=95, PETRI_TRANSITIONS=96} [2022-07-21 08:34:58,578 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 3 predicate places. [2022-07-21 08:34:58,578 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 96 transitions, 218 flow [2022-07-21 08:34:58,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2022-07-21 08:34:58,579 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:58,579 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:34:58,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:34:58,579 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:34:58,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:58,580 INFO L85 PathProgramCache]: Analyzing trace with hash 412261863, now seen corresponding path program 1 times [2022-07-21 08:34:58,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:58,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508197613] [2022-07-21 08:34:58,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:58,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:58,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:58,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:58,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508197613] [2022-07-21 08:34:58,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508197613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:58,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:58,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:34:58,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092558601] [2022-07-21 08:34:58,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:58,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:34:58,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:58,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:34:58,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:34:58,695 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 117 [2022-07-21 08:34:58,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 96 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-07-21 08:34:58,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:58,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 117 [2022-07-21 08:34:58,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:58,881 INFO L129 PetriNetUnfolder]: 195/694 cut-off events. [2022-07-21 08:34:58,882 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-07-21 08:34:58,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 694 events. 195/694 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4127 event pairs, 79 based on Foata normal form. 0/596 useless extension candidates. Maximal degree in co-relation 1095. Up to 220 conditions per place. [2022-07-21 08:34:58,886 INFO L132 encePairwiseOnDemand]: 100/117 looper letters, 33 selfloop transitions, 6 changer transitions 31/138 dead transitions. [2022-07-21 08:34:58,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 138 transitions, 445 flow [2022-07-21 08:34:58,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:34:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:34:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2022-07-21 08:34:58,888 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2022-07-21 08:34:58,888 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2022-07-21 08:34:58,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2022-07-21 08:34:58,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:58,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2022-07-21 08:34:58,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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) [2022-07-21 08:34:58,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2022-07-21 08:34:58,892 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2022-07-21 08:34:58,892 INFO L186 Difference]: Start difference. First operand has 95 places, 96 transitions, 218 flow. Second operand 5 states and 470 transitions. [2022-07-21 08:34:58,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 138 transitions, 445 flow [2022-07-21 08:34:58,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 138 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:34:58,905 INFO L242 Difference]: Finished difference. Result has 101 places, 99 transitions, 286 flow [2022-07-21 08:34:58,905 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2022-07-21 08:34:58,906 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 9 predicate places. [2022-07-21 08:34:58,906 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 286 flow [2022-07-21 08:34:58,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-07-21 08:34:58,907 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:58,907 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:34:58,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:34:58,908 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:34:58,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:58,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1144346019, now seen corresponding path program 2 times [2022-07-21 08:34:58,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:58,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954471053] [2022-07-21 08:34:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:58,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:58,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:58,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954471053] [2022-07-21 08:34:58,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954471053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:58,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:58,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:34:58,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758122149] [2022-07-21 08:34:58,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:58,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:34:58,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:58,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:34:58,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:34:58,951 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 117 [2022-07-21 08:34:58,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-07-21 08:34:58,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:58,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 117 [2022-07-21 08:34:58,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:59,110 INFO L129 PetriNetUnfolder]: 251/871 cut-off events. [2022-07-21 08:34:59,110 INFO L130 PetriNetUnfolder]: For 448/451 co-relation queries the response was YES. [2022-07-21 08:34:59,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 871 events. 251/871 cut-off events. For 448/451 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5458 event pairs, 65 based on Foata normal form. 17/802 useless extension candidates. Maximal degree in co-relation 1671. Up to 183 conditions per place. [2022-07-21 08:34:59,115 INFO L132 encePairwiseOnDemand]: 99/117 looper letters, 54 selfloop transitions, 27 changer transitions 2/151 dead transitions. [2022-07-21 08:34:59,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 151 transitions, 671 flow [2022-07-21 08:34:59,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:34:59,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:34:59,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 474 transitions. [2022-07-21 08:34:59,118 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8102564102564103 [2022-07-21 08:34:59,118 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 474 transitions. [2022-07-21 08:34:59,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 474 transitions. [2022-07-21 08:34:59,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:59,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 474 transitions. [2022-07-21 08:34:59,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 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) [2022-07-21 08:34:59,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2022-07-21 08:34:59,121 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2022-07-21 08:34:59,122 INFO L186 Difference]: Start difference. First operand has 101 places, 99 transitions, 286 flow. Second operand 5 states and 474 transitions. [2022-07-21 08:34:59,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 151 transitions, 671 flow [2022-07-21 08:34:59,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 151 transitions, 611 flow, removed 30 selfloop flow, removed 0 redundant places. [2022-07-21 08:34:59,128 INFO L242 Difference]: Finished difference. Result has 109 places, 122 transitions, 521 flow [2022-07-21 08:34:59,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=521, PETRI_PLACES=109, PETRI_TRANSITIONS=122} [2022-07-21 08:34:59,129 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 17 predicate places. [2022-07-21 08:34:59,129 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 122 transitions, 521 flow [2022-07-21 08:34:59,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-07-21 08:34:59,129 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:59,130 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:34:59,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:34:59,130 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:34:59,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:59,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1348480055, now seen corresponding path program 3 times [2022-07-21 08:34:59,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:59,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267930586] [2022-07-21 08:34:59,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:59,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:59,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:59,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267930586] [2022-07-21 08:34:59,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267930586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:59,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:59,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:34:59,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127392254] [2022-07-21 08:34:59,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:59,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:34:59,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:59,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:34:59,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:34:59,166 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 117 [2022-07-21 08:34:59,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 122 transitions, 521 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-07-21 08:34:59,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:59,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 117 [2022-07-21 08:34:59,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:59,340 INFO L129 PetriNetUnfolder]: 302/1064 cut-off events. [2022-07-21 08:34:59,340 INFO L130 PetriNetUnfolder]: For 1639/1673 co-relation queries the response was YES. [2022-07-21 08:34:59,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2492 conditions, 1064 events. 302/1064 cut-off events. For 1639/1673 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7227 event pairs, 74 based on Foata normal form. 30/966 useless extension candidates. Maximal degree in co-relation 2479. Up to 300 conditions per place. [2022-07-21 08:34:59,348 INFO L132 encePairwiseOnDemand]: 100/117 looper letters, 76 selfloop transitions, 25 changer transitions 1/170 dead transitions. [2022-07-21 08:34:59,349 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 170 transitions, 1011 flow [2022-07-21 08:34:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:34:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:34:59,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2022-07-21 08:34:59,351 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2022-07-21 08:34:59,351 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2022-07-21 08:34:59,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2022-07-21 08:34:59,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:59,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2022-07-21 08:34:59,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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) [2022-07-21 08:34:59,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2022-07-21 08:34:59,354 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2022-07-21 08:34:59,354 INFO L186 Difference]: Start difference. First operand has 109 places, 122 transitions, 521 flow. Second operand 5 states and 470 transitions. [2022-07-21 08:34:59,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 170 transitions, 1011 flow [2022-07-21 08:34:59,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 170 transitions, 997 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-07-21 08:34:59,363 INFO L242 Difference]: Finished difference. Result has 117 places, 143 transitions, 818 flow [2022-07-21 08:34:59,363 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=818, PETRI_PLACES=117, PETRI_TRANSITIONS=143} [2022-07-21 08:34:59,364 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 25 predicate places. [2022-07-21 08:34:59,364 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 143 transitions, 818 flow [2022-07-21 08:34:59,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-07-21 08:34:59,365 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:59,365 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:34:59,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:34:59,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:34:59,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:59,366 INFO L85 PathProgramCache]: Analyzing trace with hash -280044353, now seen corresponding path program 4 times [2022-07-21 08:34:59,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:59,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460462394] [2022-07-21 08:34:59,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:59,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:59,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:59,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460462394] [2022-07-21 08:34:59,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460462394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:59,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:59,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:34:59,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908238020] [2022-07-21 08:34:59,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:59,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:34:59,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:59,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:34:59,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:34:59,402 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 117 [2022-07-21 08:34:59,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 143 transitions, 818 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-07-21 08:34:59,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:59,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 117 [2022-07-21 08:34:59,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:59,664 INFO L129 PetriNetUnfolder]: 355/1161 cut-off events. [2022-07-21 08:34:59,664 INFO L130 PetriNetUnfolder]: For 1533/1572 co-relation queries the response was YES. [2022-07-21 08:34:59,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2997 conditions, 1161 events. 355/1161 cut-off events. For 1533/1572 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8018 event pairs, 93 based on Foata normal form. 16/1055 useless extension candidates. Maximal degree in co-relation 2980. Up to 443 conditions per place. [2022-07-21 08:34:59,670 INFO L132 encePairwiseOnDemand]: 100/117 looper letters, 0 selfloop transitions, 0 changer transitions 177/177 dead transitions. [2022-07-21 08:34:59,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 177 transitions, 997 flow [2022-07-21 08:34:59,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:34:59,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:34:59,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2022-07-21 08:34:59,672 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2022-07-21 08:34:59,673 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2022-07-21 08:34:59,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2022-07-21 08:34:59,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:59,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2022-07-21 08:34:59,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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) [2022-07-21 08:34:59,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2022-07-21 08:34:59,686 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2022-07-21 08:34:59,686 INFO L186 Difference]: Start difference. First operand has 117 places, 143 transitions, 818 flow. Second operand 5 states and 470 transitions. [2022-07-21 08:34:59,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 177 transitions, 997 flow [2022-07-21 08:34:59,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 177 transitions, 963 flow, removed 16 selfloop flow, removed 1 redundant places. [2022-07-21 08:34:59,694 INFO L242 Difference]: Finished difference. Result has 116 places, 0 transitions, 0 flow [2022-07-21 08:34:59,695 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=116, PETRI_TRANSITIONS=0} [2022-07-21 08:34:59,695 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 24 predicate places. [2022-07-21 08:34:59,695 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 0 transitions, 0 flow [2022-07-21 08:34:59,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-07-21 08:34:59,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-07-21 08:34:59,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-21 08:34:59,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-07-21 08:34:59,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-07-21 08:34:59,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-21 08:34:59,700 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-21 08:34:59,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:34:59,700 INFO L356 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-07-21 08:34:59,706 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 08:34:59,707 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:34:59,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:34:59 BasicIcfg [2022-07-21 08:34:59,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:34:59,712 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:34:59,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:34:59,712 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:34:59,712 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:34:57" (3/4) ... [2022-07-21 08:34:59,714 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 08:34:59,719 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2022-07-21 08:34:59,719 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-07-21 08:34:59,723 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-07-21 08:34:59,723 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-21 08:34:59,723 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 08:34:59,723 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 08:34:59,754 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:34:59,754 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:34:59,755 INFO L158 Benchmark]: Toolchain (without parser) took 3106.94ms. Allocated memory was 48.2MB in the beginning and 96.5MB in the end (delta: 48.2MB). Free memory was 22.7MB in the beginning and 62.6MB in the end (delta: -39.9MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2022-07-21 08:34:59,755 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 48.2MB. Free memory was 30.6MB in the beginning and 30.5MB in the end (delta: 33.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:34:59,756 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.87ms. Allocated memory is still 58.7MB. Free memory was 43.9MB in the beginning and 36.5MB in the end (delta: 7.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-21 08:34:59,757 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.06ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 34.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:34:59,757 INFO L158 Benchmark]: Boogie Preprocessor took 47.68ms. Allocated memory is still 58.7MB. Free memory was 34.5MB in the beginning and 32.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:34:59,758 INFO L158 Benchmark]: RCFGBuilder took 428.59ms. Allocated memory is still 58.7MB. Free memory was 32.9MB in the beginning and 34.3MB in the end (delta: -1.4MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-07-21 08:34:59,758 INFO L158 Benchmark]: TraceAbstraction took 2109.45ms. Allocated memory was 58.7MB in the beginning and 96.5MB in the end (delta: 37.7MB). Free memory was 33.6MB in the beginning and 65.2MB in the end (delta: -31.6MB). Peak memory consumption was 54.4MB. Max. memory is 16.1GB. [2022-07-21 08:34:59,758 INFO L158 Benchmark]: Witness Printer took 42.31ms. Allocated memory is still 96.5MB. Free memory was 64.7MB in the beginning and 62.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:34:59,761 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 48.2MB. Free memory was 30.6MB in the beginning and 30.5MB in the end (delta: 33.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 419.87ms. Allocated memory is still 58.7MB. Free memory was 43.9MB in the beginning and 36.5MB in the end (delta: 7.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.06ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 34.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.68ms. Allocated memory is still 58.7MB. Free memory was 34.5MB in the beginning and 32.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 428.59ms. Allocated memory is still 58.7MB. Free memory was 32.9MB in the beginning and 34.3MB in the end (delta: -1.4MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2109.45ms. Allocated memory was 58.7MB in the beginning and 96.5MB in the end (delta: 37.7MB). Free memory was 33.6MB in the beginning and 65.2MB in the end (delta: -31.6MB). Peak memory consumption was 54.4MB. Max. memory is 16.1GB. * Witness Printer took 42.31ms. Allocated memory is still 96.5MB. Free memory was 64.7MB in the beginning and 62.6MB 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: - PositiveResult [Line: 802]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 745]: 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, 154 locations, 6 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: 2.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 141 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 141 mSDsluCounter, 239 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 94 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 376 IncrementalHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 175 mSDtfsCounter, 376 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=818occurred in iteration=6, InterpolantAutomatonStates: 28, 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, 0.3s InterpolantComputationTime, 312 NumberOfCodeBlocks, 312 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 305 ConstructedInterpolants, 0 QuantifiedInterpolants, 373 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-21 08:34:59,803 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