./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/sync01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/sync01.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 8f929a317f167560539ae4b4d441a695b43dc484839e0d977f902275d758b932 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:15:56,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:15:56,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:15:56,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:15:56,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:15:56,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:15:56,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:15:56,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:15:56,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:15:56,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:15:56,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:15:56,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:15:56,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:15:56,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:15:56,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:15:56,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:15:56,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:15:56,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:15:56,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:15:56,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:15:56,641 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:15:56,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:15:56,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:15:56,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:15:56,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:15:56,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:15:56,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:15:56,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:15:56,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:15:56,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:15:56,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:15:56,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:15:56,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:15:56,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:15:56,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:15:56,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:15:56,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:15:56,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:15:56,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:15:56,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:15:56,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:15:56,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:15:56,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:15:56,679 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:15:56,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:15:56,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:15:56,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:15:56,681 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:15:56,681 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:15:56,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:15:56,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:15:56,682 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:15:56,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:15:56,682 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:15:56,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:15:56,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:15:56,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:15:56,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:15:56,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:15:56,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:15:56,683 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:15:56,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:15:56,684 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:15:56,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:15:56,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:15:56,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:15:56,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:15:56,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:15:56,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:15:56,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:15:56,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:15:56,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:15:56,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:15:56,686 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:15:56,686 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:15:56,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:15:56,686 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f929a317f167560539ae4b4d441a695b43dc484839e0d977f902275d758b932 [2022-07-22 21:15:56,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:15:56,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:15:56,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:15:56,874 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:15:56,875 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:15:56,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/sync01.i [2022-07-22 21:15:56,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2429f1aee/d817e8a3559d46e18f60b03c8087e081/FLAG25f39b8a9 [2022-07-22 21:15:57,374 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:15:57,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/sync01.i [2022-07-22 21:15:57,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2429f1aee/d817e8a3559d46e18f60b03c8087e081/FLAG25f39b8a9 [2022-07-22 21:15:57,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2429f1aee/d817e8a3559d46e18f60b03c8087e081 [2022-07-22 21:15:57,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:15:57,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:15:57,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:15:57,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:15:57,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:15:57,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:15:57" (1/1) ... [2022-07-22 21:15:57,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@586983da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:57, skipping insertion in model container [2022-07-22 21:15:57,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:15:57" (1/1) ... [2022-07-22 21:15:57,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:15:57,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:15:57,733 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/sync01.i[42004,42017] [2022-07-22 21:15:57,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:15:57,746 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:15:57,781 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/sync01.i[42004,42017] [2022-07-22 21:15:57,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:15:57,840 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:15:57,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:57 WrapperNode [2022-07-22 21:15:57,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:15:57,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:15:57,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:15:57,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:15:57,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:57" (1/1) ... [2022-07-22 21:15:57,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:57" (1/1) ... [2022-07-22 21:15:57,894 INFO L137 Inliner]: procedures = 268, calls = 46, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2022-07-22 21:15:57,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:15:57,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:15:57,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:15:57,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:15:57,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:57" (1/1) ... [2022-07-22 21:15:57,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:57" (1/1) ... [2022-07-22 21:15:57,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:57" (1/1) ... [2022-07-22 21:15:57,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:57" (1/1) ... [2022-07-22 21:15:57,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:57" (1/1) ... [2022-07-22 21:15:57,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:57" (1/1) ... [2022-07-22 21:15:57,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:57" (1/1) ... [2022-07-22 21:15:57,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:15:57,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:15:57,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:15:57,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:15:57,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:57" (1/1) ... [2022-07-22 21:15:57,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:15:57,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:15:57,962 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) [2022-07-22 21:15:57,963 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 [2022-07-22 21:15:57,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:15:57,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:15:57,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:15:57,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:15:57,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:15:57,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:15:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:15:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:15:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-22 21:15:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:15:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:15:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:15:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:15:57,997 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:15:58,154 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:15:58,155 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:15:58,345 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:15:58,349 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:15:58,351 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 21:15:58,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:15:58 BoogieIcfgContainer [2022-07-22 21:15:58,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:15:58,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:15:58,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:15:58,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:15:58,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:15:57" (1/3) ... [2022-07-22 21:15:58,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9be4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:15:58, skipping insertion in model container [2022-07-22 21:15:58,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:57" (2/3) ... [2022-07-22 21:15:58,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9be4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:15:58, skipping insertion in model container [2022-07-22 21:15:58,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:15:58" (3/3) ... [2022-07-22 21:15:58,359 INFO L111 eAbstractionObserver]: Analyzing ICFG sync01.i [2022-07-22 21:15:58,362 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:15:58,368 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:15:58,369 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:15:58,369 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:15:58,425 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-22 21:15:58,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 109 places, 107 transitions, 230 flow [2022-07-22 21:15:58,474 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2022-07-22 21:15:58,475 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:15:58,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 105 events. 5/105 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-07-22 21:15:58,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 107 transitions, 230 flow [2022-07-22 21:15:58,479 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 94 transitions, 200 flow [2022-07-22 21:15:58,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:15:58,505 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@10e83b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@60d5e8ec [2022-07-22 21:15:58,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-22 21:15:58,519 INFO L129 PetriNetUnfolder]: 4/93 cut-off events. [2022-07-22 21:15:58,520 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:15:58,520 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:15:58,520 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, 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] [2022-07-22 21:15:58,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:15:58,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:15:58,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1601244882, now seen corresponding path program 1 times [2022-07-22 21:15:58,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:15:58,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086936904] [2022-07-22 21:15:58,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:15:58,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:15:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:15:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:15:58,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:15:58,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086936904] [2022-07-22 21:15:58,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086936904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:15:58,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:15:58,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:15:58,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481554497] [2022-07-22 21:15:58,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:15:58,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:15:58,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:15:58,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:15:58,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:15:58,771 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 107 [2022-07-22 21:15:58,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 200 flow. Second operand has 2 states, 2 states have (on average 102.0) internal successors, (204), 2 states have internal predecessors, (204), 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) [2022-07-22 21:15:58,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:15:58,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 107 [2022-07-22 21:15:58,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:15:58,815 INFO L129 PetriNetUnfolder]: 2/92 cut-off events. [2022-07-22 21:15:58,817 INFO L130 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-07-22 21:15:58,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 92 events. 2/92 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 4/94 useless extension candidates. Maximal degree in co-relation 70. Up to 5 conditions per place. [2022-07-22 21:15:58,819 INFO L132 encePairwiseOnDemand]: 105/107 looper letters, 4 selfloop transitions, 0 changer transitions 0/92 dead transitions. [2022-07-22 21:15:58,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 92 transitions, 204 flow [2022-07-22 21:15:58,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:15:58,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:15:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 204 transitions. [2022-07-22 21:15:58,828 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9532710280373832 [2022-07-22 21:15:58,828 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 204 transitions. [2022-07-22 21:15:58,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 204 transitions. [2022-07-22 21:15:58,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:15:58,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 204 transitions. [2022-07-22 21:15:58,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 102.0) internal successors, (204), 2 states have internal predecessors, (204), 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) [2022-07-22 21:15:58,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2022-07-22 21:15:58,839 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2022-07-22 21:15:58,840 INFO L186 Difference]: Start difference. First operand has 97 places, 94 transitions, 200 flow. Second operand 2 states and 204 transitions. [2022-07-22 21:15:58,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 92 transitions, 204 flow [2022-07-22 21:15:58,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 196 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:15:58,844 INFO L242 Difference]: Finished difference. Result has 94 places, 92 transitions, 188 flow [2022-07-22 21:15:58,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=188, PETRI_PLACES=94, PETRI_TRANSITIONS=92} [2022-07-22 21:15:58,848 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, -3 predicate places. [2022-07-22 21:15:58,848 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 92 transitions, 188 flow [2022-07-22 21:15:58,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 102.0) internal successors, (204), 2 states have internal predecessors, (204), 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) [2022-07-22 21:15:58,848 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:15:58,848 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, 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] [2022-07-22 21:15:58,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:15:58,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:15:58,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:15:58,849 INFO L85 PathProgramCache]: Analyzing trace with hash 883040944, now seen corresponding path program 1 times [2022-07-22 21:15:58,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:15:58,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371652015] [2022-07-22 21:15:58,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:15:58,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:15:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:15:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:15:59,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:15:59,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371652015] [2022-07-22 21:15:59,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371652015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:15:59,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:15:59,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:15:59,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646034060] [2022-07-22 21:15:59,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:15:59,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:15:59,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:15:59,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:15:59,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:15:59,081 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 107 [2022-07-22 21:15:59,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 92 transitions, 188 flow. Second operand has 7 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 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) [2022-07-22 21:15:59,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:15:59,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 107 [2022-07-22 21:15:59,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:15:59,228 INFO L129 PetriNetUnfolder]: 14/126 cut-off events. [2022-07-22 21:15:59,229 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:15:59,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 126 events. 14/126 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 157 event pairs, 2 based on Foata normal form. 1/126 useless extension candidates. Maximal degree in co-relation 167. Up to 16 conditions per place. [2022-07-22 21:15:59,230 INFO L132 encePairwiseOnDemand]: 95/107 looper letters, 0 selfloop transitions, 0 changer transitions 95/95 dead transitions. [2022-07-22 21:15:59,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 95 transitions, 243 flow [2022-07-22 21:15:59,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:15:59,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:15:59,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 880 transitions. [2022-07-22 21:15:59,234 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.822429906542056 [2022-07-22 21:15:59,234 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 880 transitions. [2022-07-22 21:15:59,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 880 transitions. [2022-07-22 21:15:59,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:15:59,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 880 transitions. [2022-07-22 21:15:59,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.0) internal successors, (880), 10 states have internal predecessors, (880), 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) [2022-07-22 21:15:59,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-07-22 21:15:59,243 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-07-22 21:15:59,243 INFO L186 Difference]: Start difference. First operand has 94 places, 92 transitions, 188 flow. Second operand 10 states and 880 transitions. [2022-07-22 21:15:59,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 95 transitions, 243 flow [2022-07-22 21:15:59,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 243 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:15:59,244 INFO L242 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2022-07-22 21:15:59,244 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2022-07-22 21:15:59,244 INFO L279 CegarLoopForPetriNet]: 97 programPoint places, 1 predicate places. [2022-07-22 21:15:59,245 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2022-07-22 21:15:59,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 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) [2022-07-22 21:15:59,247 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-22 21:15:59,247 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-22 21:15:59,247 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-22 21:15:59,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:15:59,248 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 21:15:59,250 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-22 21:15:59,250 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:15:59,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:15:59 BasicIcfg [2022-07-22 21:15:59,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:15:59,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:15:59,254 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:15:59,254 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:15:59,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:15:58" (3/4) ... [2022-07-22 21:15:59,255 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 21:15:59,259 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-22 21:15:59,259 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-22 21:15:59,262 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-07-22 21:15:59,262 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-22 21:15:59,262 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 21:15:59,262 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 21:15:59,285 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 21:15:59,285 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:15:59,286 INFO L158 Benchmark]: Toolchain (without parser) took 1881.48ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 66.4MB in the beginning and 92.4MB in the end (delta: -26.0MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2022-07-22 21:15:59,286 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:15:59,286 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.88ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 66.1MB in the beginning and 88.3MB in the end (delta: -22.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 21:15:59,286 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.70ms. Allocated memory is still 130.0MB. Free memory was 88.3MB in the beginning and 85.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:15:59,287 INFO L158 Benchmark]: Boogie Preprocessor took 43.29ms. Allocated memory is still 130.0MB. Free memory was 85.7MB in the beginning and 84.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:15:59,287 INFO L158 Benchmark]: RCFGBuilder took 413.54ms. Allocated memory is still 130.0MB. Free memory was 84.0MB in the beginning and 105.2MB in the end (delta: -21.2MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2022-07-22 21:15:59,287 INFO L158 Benchmark]: TraceAbstraction took 898.95ms. Allocated memory is still 130.0MB. Free memory was 104.3MB in the beginning and 94.5MB in the end (delta: 9.8MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2022-07-22 21:15:59,287 INFO L158 Benchmark]: Witness Printer took 31.63ms. Allocated memory is still 130.0MB. Free memory was 94.5MB in the beginning and 92.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:15:59,289 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 96.5MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 434.88ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 66.1MB in the beginning and 88.3MB in the end (delta: -22.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.70ms. Allocated memory is still 130.0MB. Free memory was 88.3MB in the beginning and 85.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.29ms. Allocated memory is still 130.0MB. Free memory was 85.7MB in the beginning and 84.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 413.54ms. Allocated memory is still 130.0MB. Free memory was 84.0MB in the beginning and 105.2MB in the end (delta: -21.2MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. * TraceAbstraction took 898.95ms. Allocated memory is still 130.0MB. Free memory was 104.3MB in the beginning and 94.5MB in the end (delta: 9.8MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * Witness Printer took 31.63ms. Allocated memory is still 130.0MB. Free memory was 94.5MB in the beginning and 92.4MB 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: 966]: 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, 133 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53 IncrementalHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 6 mSDtfsCounter, 53 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-22 21:15:59,314 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