./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/peterson.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/peterson.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 ee3d1a41e169e13d6fb9bc974b1d8f7c8de5421cb2dfbc7e3d9a400662188398 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:01:53,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:01:53,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:01:53,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:01:53,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:01:53,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:01:53,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:01:53,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:01:53,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:01:53,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:01:53,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:01:53,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:01:53,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:01:53,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:01:53,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:01:53,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:01:53,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:01:53,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:01:53,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:01:53,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:01:53,364 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:01:53,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:01:53,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:01:53,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:01:53,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:01:53,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:01:53,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:01:53,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:01:53,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:01:53,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:01:53,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:01:53,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:01:53,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:01:53,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:01:53,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:01:53,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:01:53,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:01:53,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:01:53,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:01:53,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:01:53,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:01:53,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:01:53,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:01:53,405 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:01:53,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:01:53,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:01:53,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:01:53,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:01:53,407 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:01:53,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:01:53,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:01:53,407 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:01:53,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:01:53,408 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:01:53,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:01:53,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:01:53,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:01:53,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:01:53,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:01:53,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:01:53,409 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:01:53,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:01:53,410 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:01:53,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:01:53,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:01:53,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:01:53,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:01:53,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:01:53,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:01:53,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:01:53,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:01:53,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:01:53,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:01:53,413 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:01:53,413 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:01:53,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:01:53,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee3d1a41e169e13d6fb9bc974b1d8f7c8de5421cb2dfbc7e3d9a400662188398 [2022-07-19 21:01:53,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:01:53,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:01:53,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:01:53,640 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:01:53,641 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:01:53,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/peterson.i [2022-07-19 21:01:53,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b4a42320/170e868ec257418b9d2c1cc35ae16eba/FLAGeffd48818 [2022-07-19 21:01:54,045 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:01:54,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/peterson.i [2022-07-19 21:01:54,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b4a42320/170e868ec257418b9d2c1cc35ae16eba/FLAGeffd48818 [2022-07-19 21:01:54,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b4a42320/170e868ec257418b9d2c1cc35ae16eba [2022-07-19 21:01:54,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:01:54,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:01:54,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:01:54,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:01:54,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:01:54,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:01:54" (1/1) ... [2022-07-19 21:01:54,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12bbac8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:54, skipping insertion in model container [2022-07-19 21:01:54,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:01:54" (1/1) ... [2022-07-19 21:01:54,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:01:54,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:01:54,624 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-19 21:01:54,736 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/peterson.i[30997,31010] [2022-07-19 21:01:54,742 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/peterson.i[31682,31695] [2022-07-19 21:01:54,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:01:54,754 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:01:54,773 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-19 21:01:54,785 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/peterson.i[30997,31010] [2022-07-19 21:01:54,795 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/peterson.i[31682,31695] [2022-07-19 21:01:54,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:01:54,829 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:01:54,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:54 WrapperNode [2022-07-19 21:01:54,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:01:54,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:01:54,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:01:54,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:01:54,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:54" (1/1) ... [2022-07-19 21:01:54,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:54" (1/1) ... [2022-07-19 21:01:54,864 INFO L137 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2022-07-19 21:01:54,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:01:54,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:01:54,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:01:54,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:01:54,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:54" (1/1) ... [2022-07-19 21:01:54,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:54" (1/1) ... [2022-07-19 21:01:54,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:54" (1/1) ... [2022-07-19 21:01:54,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:54" (1/1) ... [2022-07-19 21:01:54,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:54" (1/1) ... [2022-07-19 21:01:54,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:54" (1/1) ... [2022-07-19 21:01:54,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:54" (1/1) ... [2022-07-19 21:01:54,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:01:54,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:01:54,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:01:54,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:01:54,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:54" (1/1) ... [2022-07-19 21:01:54,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:01:54,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:01:54,928 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) [2022-07-19 21:01:54,935 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 [2022-07-19 21:01:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:01:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-07-19 21:01:54,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-07-19 21:01:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-19 21:01:54,960 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-19 21:01:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:01:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:01:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:01:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:01:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:01:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:01:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:01:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:01:54,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:01:54,962 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:01:55,026 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:01:55,027 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:01:55,149 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:01:55,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:01:55,154 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 21:01:55,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:01:55 BoogieIcfgContainer [2022-07-19 21:01:55,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:01:55,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:01:55,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:01:55,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:01:55,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:01:54" (1/3) ... [2022-07-19 21:01:55,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545c089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:01:55, skipping insertion in model container [2022-07-19 21:01:55,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:01:54" (2/3) ... [2022-07-19 21:01:55,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545c089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:01:55, skipping insertion in model container [2022-07-19 21:01:55,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:01:55" (3/3) ... [2022-07-19 21:01:55,174 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2022-07-19 21:01:55,178 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:01:55,186 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:01:55,186 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 21:01:55,186 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:01:55,220 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-19 21:01:55,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 180 flow [2022-07-19 21:01:55,275 INFO L129 PetriNetUnfolder]: 6/80 cut-off events. [2022-07-19 21:01:55,275 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:01:55,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 6/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-07-19 21:01:55,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 82 transitions, 180 flow [2022-07-19 21:01:55,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 70 transitions, 149 flow [2022-07-19 21:01:55,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:01:55,293 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@207654dd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b27b10b [2022-07-19 21:01:55,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-19 21:01:55,305 INFO L129 PetriNetUnfolder]: 3/49 cut-off events. [2022-07-19 21:01:55,305 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:01:55,305 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:01:55,306 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] [2022-07-19 21:01:55,309 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:01:55,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:01:55,313 INFO L85 PathProgramCache]: Analyzing trace with hash -319828652, now seen corresponding path program 1 times [2022-07-19 21:01:55,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:01:55,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433726163] [2022-07-19 21:01:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:01:55,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:01:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:01:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:01:55,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:01:55,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433726163] [2022-07-19 21:01:55,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433726163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:01:55,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:01:55,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:01:55,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824637883] [2022-07-19 21:01:55,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:01:55,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:01:55,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:01:55,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:01:55,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:01:55,538 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2022-07-19 21:01:55,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2022-07-19 21:01:55,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:01:55,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2022-07-19 21:01:55,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:01:55,620 INFO L129 PetriNetUnfolder]: 16/145 cut-off events. [2022-07-19 21:01:55,620 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-07-19 21:01:55,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 145 events. 16/145 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 476 event pairs, 4 based on Foata normal form. 19/152 useless extension candidates. Maximal degree in co-relation 138. Up to 24 conditions per place. [2022-07-19 21:01:55,622 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 11 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2022-07-19 21:01:55,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 180 flow [2022-07-19 21:01:55,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:01:55,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:01:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2022-07-19 21:01:55,634 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9065040650406504 [2022-07-19 21:01:55,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2022-07-19 21:01:55,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2022-07-19 21:01:55,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:01:55,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2022-07-19 21:01:55,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2022-07-19 21:01:55,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2022-07-19 21:01:55,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2022-07-19 21:01:55,649 INFO L186 Difference]: Start difference. First operand has 71 places, 70 transitions, 149 flow. Second operand 3 states and 223 transitions. [2022-07-19 21:01:55,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 180 flow [2022-07-19 21:01:55,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 173 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-19 21:01:55,661 INFO L242 Difference]: Finished difference. Result has 72 places, 67 transitions, 156 flow [2022-07-19 21:01:55,663 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2022-07-19 21:01:55,666 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 1 predicate places. [2022-07-19 21:01:55,666 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 156 flow [2022-07-19 21:01:55,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2022-07-19 21:01:55,667 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:01:55,667 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] [2022-07-19 21:01:55,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:01:55,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:01:55,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:01:55,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1668992913, now seen corresponding path program 1 times [2022-07-19 21:01:55,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:01:55,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251704771] [2022-07-19 21:01:55,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:01:55,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:01:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:01:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:01:55,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:01:55,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251704771] [2022-07-19 21:01:55,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251704771] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:01:55,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:01:55,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:01:55,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650948531] [2022-07-19 21:01:55,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:01:55,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:01:55,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:01:55,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:01:55,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:01:55,767 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2022-07-19 21:01:55,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2022-07-19 21:01:55,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:01:55,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2022-07-19 21:01:55,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:01:55,812 INFO L129 PetriNetUnfolder]: 10/127 cut-off events. [2022-07-19 21:01:55,812 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-07-19 21:01:55,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 127 events. 10/127 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 370 event pairs, 5 based on Foata normal form. 7/129 useless extension candidates. Maximal degree in co-relation 82. Up to 22 conditions per place. [2022-07-19 21:01:55,814 INFO L132 encePairwiseOnDemand]: 78/82 looper letters, 9 selfloop transitions, 2 changer transitions 1/68 dead transitions. [2022-07-19 21:01:55,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 183 flow [2022-07-19 21:01:55,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:01:55,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:01:55,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2022-07-19 21:01:55,819 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8739837398373984 [2022-07-19 21:01:55,819 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2022-07-19 21:01:55,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2022-07-19 21:01:55,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:01:55,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2022-07-19 21:01:55,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2022-07-19 21:01:55,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2022-07-19 21:01:55,822 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2022-07-19 21:01:55,822 INFO L186 Difference]: Start difference. First operand has 72 places, 67 transitions, 156 flow. Second operand 3 states and 215 transitions. [2022-07-19 21:01:55,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 183 flow [2022-07-19 21:01:55,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 68 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:01:55,825 INFO L242 Difference]: Finished difference. Result has 73 places, 67 transitions, 160 flow [2022-07-19 21:01:55,825 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2022-07-19 21:01:55,826 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2022-07-19 21:01:55,826 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 160 flow [2022-07-19 21:01:55,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2022-07-19 21:01:55,826 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:01:55,827 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] [2022-07-19 21:01:55,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:01:55,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:01:55,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:01:55,830 INFO L85 PathProgramCache]: Analyzing trace with hash -814098879, now seen corresponding path program 1 times [2022-07-19 21:01:55,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:01:55,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246760402] [2022-07-19 21:01:55,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:01:55,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:01:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:01:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:01:55,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:01:55,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246760402] [2022-07-19 21:01:55,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246760402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:01:55,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:01:55,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:01:55,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694456175] [2022-07-19 21:01:55,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:01:55,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:01:55,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:01:55,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:01:55,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:01:55,946 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 82 [2022-07-19 21:01:55,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 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) [2022-07-19 21:01:55,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:01:55,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 82 [2022-07-19 21:01:55,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:01:56,113 INFO L129 PetriNetUnfolder]: 83/326 cut-off events. [2022-07-19 21:01:56,114 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-07-19 21:01:56,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 326 events. 83/326 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1529 event pairs, 9 based on Foata normal form. 0/307 useless extension candidates. Maximal degree in co-relation 465. Up to 48 conditions per place. [2022-07-19 21:01:56,116 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 26 selfloop transitions, 13 changer transitions 19/108 dead transitions. [2022-07-19 21:01:56,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 108 transitions, 363 flow [2022-07-19 21:01:56,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:01:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:01:56,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 662 transitions. [2022-07-19 21:01:56,118 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8073170731707318 [2022-07-19 21:01:56,118 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 662 transitions. [2022-07-19 21:01:56,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 662 transitions. [2022-07-19 21:01:56,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:01:56,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 662 transitions. [2022-07-19 21:01:56,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 66.2) internal successors, (662), 10 states have internal predecessors, (662), 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) [2022-07-19 21:01:56,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2022-07-19 21:01:56,122 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2022-07-19 21:01:56,122 INFO L186 Difference]: Start difference. First operand has 73 places, 67 transitions, 160 flow. Second operand 10 states and 662 transitions. [2022-07-19 21:01:56,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 108 transitions, 363 flow [2022-07-19 21:01:56,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 108 transitions, 361 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:01:56,125 INFO L242 Difference]: Finished difference. Result has 90 places, 79 transitions, 266 flow [2022-07-19 21:01:56,125 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=266, PETRI_PLACES=90, PETRI_TRANSITIONS=79} [2022-07-19 21:01:56,126 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 19 predicate places. [2022-07-19 21:01:56,126 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 79 transitions, 266 flow [2022-07-19 21:01:56,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 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) [2022-07-19 21:01:56,126 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:01:56,127 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] [2022-07-19 21:01:56,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:01:56,127 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:01:56,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:01:56,128 INFO L85 PathProgramCache]: Analyzing trace with hash 520676303, now seen corresponding path program 2 times [2022-07-19 21:01:56,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:01:56,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474108745] [2022-07-19 21:01:56,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:01:56,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:01:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:01:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:01:56,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:01:56,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474108745] [2022-07-19 21:01:56,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474108745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:01:56,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:01:56,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:01:56,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745920021] [2022-07-19 21:01:56,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:01:56,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:01:56,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:01:56,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:01:56,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:01:56,188 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 82 [2022-07-19 21:01:56,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 79 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 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) [2022-07-19 21:01:56,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:01:56,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 82 [2022-07-19 21:01:56,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:01:56,299 INFO L129 PetriNetUnfolder]: 93/307 cut-off events. [2022-07-19 21:01:56,300 INFO L130 PetriNetUnfolder]: For 215/237 co-relation queries the response was YES. [2022-07-19 21:01:56,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 307 events. 93/307 cut-off events. For 215/237 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1322 event pairs, 9 based on Foata normal form. 8/305 useless extension candidates. Maximal degree in co-relation 693. Up to 55 conditions per place. [2022-07-19 21:01:56,301 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2022-07-19 21:01:56,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 114 transitions, 523 flow [2022-07-19 21:01:56,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:01:56,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:01:56,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 656 transitions. [2022-07-19 21:01:56,303 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-07-19 21:01:56,303 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 656 transitions. [2022-07-19 21:01:56,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 656 transitions. [2022-07-19 21:01:56,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:01:56,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 656 transitions. [2022-07-19 21:01:56,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.6) internal successors, (656), 10 states have internal predecessors, (656), 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) [2022-07-19 21:01:56,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2022-07-19 21:01:56,307 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2022-07-19 21:01:56,307 INFO L186 Difference]: Start difference. First operand has 90 places, 79 transitions, 266 flow. Second operand 10 states and 656 transitions. [2022-07-19 21:01:56,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 114 transitions, 523 flow [2022-07-19 21:01:56,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 114 transitions, 493 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-07-19 21:01:56,311 INFO L242 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2022-07-19 21:01:56,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2022-07-19 21:01:56,312 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 19 predicate places. [2022-07-19 21:01:56,312 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2022-07-19 21:01:56,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 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) [2022-07-19 21:01:56,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-07-19 21:01:56,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-19 21:01:56,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-07-19 21:01:56,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-07-19 21:01:56,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-19 21:01:56,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-19 21:01:56,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:01:56,316 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-07-19 21:01:56,321 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:01:56,321 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:01:56,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:01:56 BasicIcfg [2022-07-19 21:01:56,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:01:56,333 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:01:56,333 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:01:56,333 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:01:56,333 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:01:55" (3/4) ... [2022-07-19 21:01:56,335 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:01:56,339 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2022-07-19 21:01:56,339 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-07-19 21:01:56,342 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-07-19 21:01:56,342 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:01:56,342 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:01:56,342 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:01:56,368 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:01:56,368 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:01:56,369 INFO L158 Benchmark]: Toolchain (without parser) took 1938.86ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 61.7MB in the beginning and 51.5MB in the end (delta: 10.2MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2022-07-19 21:01:56,369 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory is still 50.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:01:56,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 397.37ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 61.4MB in the beginning and 78.5MB in the end (delta: -17.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 21:01:56,369 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.65ms. Allocated memory is still 113.2MB. Free memory was 78.5MB in the beginning and 76.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:01:56,369 INFO L158 Benchmark]: Boogie Preprocessor took 33.75ms. Allocated memory is still 113.2MB. Free memory was 76.4MB in the beginning and 74.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:01:56,369 INFO L158 Benchmark]: RCFGBuilder took 260.56ms. Allocated memory is still 113.2MB. Free memory was 74.9MB in the beginning and 62.9MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 21:01:56,371 INFO L158 Benchmark]: TraceAbstraction took 1170.41ms. Allocated memory is still 113.2MB. Free memory was 62.3MB in the beginning and 53.6MB in the end (delta: 8.7MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-07-19 21:01:56,371 INFO L158 Benchmark]: Witness Printer took 35.24ms. Allocated memory is still 113.2MB. Free memory was 53.6MB in the beginning and 51.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:01:56,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory is still 50.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 397.37ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 61.4MB in the beginning and 78.5MB in the end (delta: -17.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.65ms. Allocated memory is still 113.2MB. Free memory was 78.5MB in the beginning and 76.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.75ms. Allocated memory is still 113.2MB. Free memory was 76.4MB in the beginning and 74.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 260.56ms. Allocated memory is still 113.2MB. Free memory was 74.9MB in the beginning and 62.9MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1170.41ms. Allocated memory is still 113.2MB. Free memory was 62.3MB in the beginning and 53.6MB in the end (delta: 8.7MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Witness Printer took 35.24ms. Allocated memory is still 113.2MB. Free memory was 53.6MB in the beginning and 51.5MB 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: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: 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, 111 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: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 83 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 243 IncrementalHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 61 mSDtfsCounter, 243 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=266occurred in iteration=3, InterpolantAutomatonStates: 26, 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, 0.2s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 236 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2022-07-19 21:01:56,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE