./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.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 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:51:50,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:51:50,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:51:50,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:51:50,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:51:50,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:51:50,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:51:50,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:51:50,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:51:50,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:51:50,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:51:50,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:51:50,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:51:50,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:51:50,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:51:50,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:51:50,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:51:50,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:51:50,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:51:50,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:51:50,077 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:51:50,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:51:50,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:51:50,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:51:50,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:51:50,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:51:50,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:51:50,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:51:50,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:51:50,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:51:50,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:51:50,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:51:50,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:51:50,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:51:50,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:51:50,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:51:50,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:51:50,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:51:50,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:51:50,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:51:50,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:51:50,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:51:50,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:51:50,132 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:51:50,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:51:50,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:51:50,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:51:50,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:51:50,134 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:51:50,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:51:50,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:51:50,135 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:51:50,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:51:50,136 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:51:50,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:51:50,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:51:50,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:51:50,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:51:50,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:51:50,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:51:50,138 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:51:50,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:51:50,138 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:51:50,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:51:50,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:51:50,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:51:50,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:51:50,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:51:50,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:51:50,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:51:50,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:51:50,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:51:50,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:51:50,141 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:51:50,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:51:50,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:51:50,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 [2022-07-21 08:51:50,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:51:50,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:51:50,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:51:50,458 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:51:50,459 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:51:50,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i [2022-07-21 08:51:50,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f321f2a/f4aa46b28d6c4d4bad1318da1a058d41/FLAGa9c90ded0 [2022-07-21 08:51:51,030 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:51:51,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i [2022-07-21 08:51:51,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f321f2a/f4aa46b28d6c4d4bad1318da1a058d41/FLAGa9c90ded0 [2022-07-21 08:51:51,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f321f2a/f4aa46b28d6c4d4bad1318da1a058d41 [2022-07-21 08:51:51,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:51:51,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:51:51,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:51:51,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:51:51,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:51:51,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:51:51" (1/1) ... [2022-07-21 08:51:51,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@751e76b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:51, skipping insertion in model container [2022-07-21 08:51:51,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:51:51" (1/1) ... [2022-07-21 08:51:51,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:51:51,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:51:51,658 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/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2022-07-21 08:51:51,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:51:51,691 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:51:51,742 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/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2022-07-21 08:51:51,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:51:51,800 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:51:51,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:51 WrapperNode [2022-07-21 08:51:51,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:51:51,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:51:51,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:51:51,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:51:51,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:51" (1/1) ... [2022-07-21 08:51:51,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:51" (1/1) ... [2022-07-21 08:51:51,863 INFO L137 Inliner]: procedures = 170, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-07-21 08:51:51,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:51:51,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:51:51,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:51:51,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:51:51,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:51" (1/1) ... [2022-07-21 08:51:51,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:51" (1/1) ... [2022-07-21 08:51:51,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:51" (1/1) ... [2022-07-21 08:51:51,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:51" (1/1) ... [2022-07-21 08:51:51,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:51" (1/1) ... [2022-07-21 08:51:51,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:51" (1/1) ... [2022-07-21 08:51:51,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:51" (1/1) ... [2022-07-21 08:51:51,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:51:51,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:51:51,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:51:51,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:51:51,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:51" (1/1) ... [2022-07-21 08:51:51,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:51:51,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:51:51,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:51:51,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:51:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:51:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:51:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-21 08:51:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:51:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:51:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-21 08:51:51,963 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-21 08:51:51,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:51:51,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:51:51,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:51:51,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:51:51,964 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:51:52,064 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:51:52,066 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:51:52,351 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:51:52,364 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:51:52,365 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-21 08:51:52,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:51:52 BoogieIcfgContainer [2022-07-21 08:51:52,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:51:52,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:51:52,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:51:52,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:51:52,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:51:51" (1/3) ... [2022-07-21 08:51:52,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796df26a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:51:52, skipping insertion in model container [2022-07-21 08:51:52,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:51:51" (2/3) ... [2022-07-21 08:51:52,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796df26a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:51:52, skipping insertion in model container [2022-07-21 08:51:52,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:51:52" (3/3) ... [2022-07-21 08:51:52,373 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_46-escape_racefree.i [2022-07-21 08:51:52,378 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:51:52,385 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:51:52,386 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:51:52,386 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:51:52,459 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-21 08:51:52,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 110 transitions, 228 flow [2022-07-21 08:51:52,596 INFO L129 PetriNetUnfolder]: 9/109 cut-off events. [2022-07-21 08:51:52,597 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-21 08:51:52,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 109 events. 9/109 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 158 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 57. Up to 3 conditions per place. [2022-07-21 08:51:52,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 110 transitions, 228 flow [2022-07-21 08:51:52,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 99 transitions, 201 flow [2022-07-21 08:51:52,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:51:52,627 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@12d8fec, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a6486a1 [2022-07-21 08:51:52,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:51:52,655 INFO L129 PetriNetUnfolder]: 4/88 cut-off events. [2022-07-21 08:51:52,656 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:51:52,657 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:51:52,657 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] [2022-07-21 08:51:52,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:51:52,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:51:52,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1929624586, now seen corresponding path program 1 times [2022-07-21 08:51:52,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:51:52,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495048232] [2022-07-21 08:51:52,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:51:52,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:51:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:51:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:51:52,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:51:52,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495048232] [2022-07-21 08:51:52,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495048232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:51:52,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:51:52,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:51:52,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262944237] [2022-07-21 08:51:52,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:51:52,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:51:52,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:51:53,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:51:53,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:51:53,011 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 110 [2022-07-21 08:51:53,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 201 flow. Second operand has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:51:53,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:51:53,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 110 [2022-07-21 08:51:53,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:51:53,345 INFO L129 PetriNetUnfolder]: 41/308 cut-off events. [2022-07-21 08:51:53,345 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:51:53,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 308 events. 41/308 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1418 event pairs, 10 based on Foata normal form. 96/401 useless extension candidates. Maximal degree in co-relation 370. Up to 29 conditions per place. [2022-07-21 08:51:53,348 INFO L132 encePairwiseOnDemand]: 91/110 looper letters, 28 selfloop transitions, 4 changer transitions 38/120 dead transitions. [2022-07-21 08:51:53,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 120 transitions, 375 flow [2022-07-21 08:51:53,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:51:53,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:51:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 948 transitions. [2022-07-21 08:51:53,369 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6155844155844156 [2022-07-21 08:51:53,369 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 948 transitions. [2022-07-21 08:51:53,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 948 transitions. [2022-07-21 08:51:53,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:51:53,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 948 transitions. [2022-07-21 08:51:53,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 67.71428571428571) internal successors, (948), 14 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:51:53,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 110.0) internal successors, (1650), 15 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:51:53,391 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 110.0) internal successors, (1650), 15 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:51:53,393 INFO L186 Difference]: Start difference. First operand has 94 places, 99 transitions, 201 flow. Second operand 14 states and 948 transitions. [2022-07-21 08:51:53,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 120 transitions, 375 flow [2022-07-21 08:51:53,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 120 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:51:53,400 INFO L242 Difference]: Finished difference. Result has 112 places, 82 transitions, 190 flow [2022-07-21 08:51:53,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=190, PETRI_PLACES=112, PETRI_TRANSITIONS=82} [2022-07-21 08:51:53,407 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 18 predicate places. [2022-07-21 08:51:53,407 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 82 transitions, 190 flow [2022-07-21 08:51:53,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:51:53,408 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:51:53,409 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] [2022-07-21 08:51:53,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:51:53,409 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:51:53,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:51:53,411 INFO L85 PathProgramCache]: Analyzing trace with hash -2129046964, now seen corresponding path program 1 times [2022-07-21 08:51:53,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:51:53,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600757145] [2022-07-21 08:51:53,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:51:53,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:51:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:51:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:51:53,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:51:53,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600757145] [2022-07-21 08:51:53,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600757145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:51:53,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:51:53,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:51:53,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955330835] [2022-07-21 08:51:53,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:51:53,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:51:53,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:51:53,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:51:53,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:51:53,596 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 110 [2022-07-21 08:51:53,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 82 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:51:53,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:51:53,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 110 [2022-07-21 08:51:53,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:51:53,677 INFO L129 PetriNetUnfolder]: 0/86 cut-off events. [2022-07-21 08:51:53,677 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:51:53,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 86 events. 0/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 7/93 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2022-07-21 08:51:53,679 INFO L132 encePairwiseOnDemand]: 105/110 looper letters, 16 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2022-07-21 08:51:53,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 82 transitions, 232 flow [2022-07-21 08:51:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:51:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:51:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 403 transitions. [2022-07-21 08:51:53,685 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7327272727272728 [2022-07-21 08:51:53,685 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 403 transitions. [2022-07-21 08:51:53,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 403 transitions. [2022-07-21 08:51:53,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:51:53,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 403 transitions. [2022-07-21 08:51:53,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:51:53,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:51:53,688 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:51:53,689 INFO L186 Difference]: Start difference. First operand has 112 places, 82 transitions, 190 flow. Second operand 5 states and 403 transitions. [2022-07-21 08:51:53,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 82 transitions, 232 flow [2022-07-21 08:51:53,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 82 transitions, 212 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-07-21 08:51:53,692 INFO L242 Difference]: Finished difference. Result has 90 places, 82 transitions, 180 flow [2022-07-21 08:51:53,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2022-07-21 08:51:53,693 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, -4 predicate places. [2022-07-21 08:51:53,693 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 180 flow [2022-07-21 08:51:53,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:51:53,694 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:51:53,695 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] [2022-07-21 08:51:53,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:51:53,695 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:51:53,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:51:53,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1261698595, now seen corresponding path program 1 times [2022-07-21 08:51:53,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:51:53,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429125756] [2022-07-21 08:51:53,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:51:53,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:51:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:51:54,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:51:54,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:51:54,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429125756] [2022-07-21 08:51:54,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429125756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:51:54,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:51:54,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-21 08:51:54,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831179328] [2022-07-21 08:51:54,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:51:54,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 08:51:54,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:51:54,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 08:51:54,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:51:54,086 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 110 [2022-07-21 08:51:54,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 180 flow. Second operand has 17 states, 17 states have (on average 54.35294117647059) internal successors, (924), 17 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:51:54,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:51:54,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 110 [2022-07-21 08:51:54,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:51:54,687 INFO L129 PetriNetUnfolder]: 0/84 cut-off events. [2022-07-21 08:51:54,688 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-21 08:51:54,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 84 events. 0/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 0. Up to 19 conditions per place. [2022-07-21 08:51:54,688 INFO L132 encePairwiseOnDemand]: 90/110 looper letters, 0 selfloop transitions, 0 changer transitions 80/80 dead transitions. [2022-07-21 08:51:54,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 80 transitions, 254 flow [2022-07-21 08:51:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 08:51:54,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-21 08:51:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1132 transitions. [2022-07-21 08:51:54,691 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.49004329004329006 [2022-07-21 08:51:54,691 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1132 transitions. [2022-07-21 08:51:54,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1132 transitions. [2022-07-21 08:51:54,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:51:54,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1132 transitions. [2022-07-21 08:51:54,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 53.904761904761905) internal successors, (1132), 21 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:51:54,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 110.0) internal successors, (2420), 22 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:51:54,702 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 110.0) internal successors, (2420), 22 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:51:54,702 INFO L186 Difference]: Start difference. First operand has 90 places, 82 transitions, 180 flow. Second operand 21 states and 1132 transitions. [2022-07-21 08:51:54,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 80 transitions, 254 flow [2022-07-21 08:51:54,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 80 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-21 08:51:54,705 INFO L242 Difference]: Finished difference. Result has 105 places, 0 transitions, 0 flow [2022-07-21 08:51:54,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=0, PETRI_PLACES=105, PETRI_TRANSITIONS=0} [2022-07-21 08:51:54,707 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2022-07-21 08:51:54,707 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 0 transitions, 0 flow [2022-07-21 08:51:54,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.35294117647059) internal successors, (924), 17 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:51:54,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-21 08:51:54,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-07-21 08:51:54,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:51:54,712 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-21 08:51:54,715 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 08:51:54,715 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:51:54,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:51:54 BasicIcfg [2022-07-21 08:51:54,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:51:54,725 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:51:54,725 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:51:54,725 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:51:54,726 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:51:52" (3/4) ... [2022-07-21 08:51:54,728 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 08:51:54,733 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-07-21 08:51:54,738 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-07-21 08:51:54,738 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-21 08:51:54,738 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 08:51:54,738 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 08:51:54,776 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:51:54,776 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:51:54,777 INFO L158 Benchmark]: Toolchain (without parser) took 3412.36ms. Allocated memory was 54.5MB in the beginning and 88.1MB in the end (delta: 33.6MB). Free memory was 30.1MB in the beginning and 29.6MB in the end (delta: 552.2kB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2022-07-21 08:51:54,777 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 54.5MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:51:54,778 INFO L158 Benchmark]: CACSL2BoogieTranslator took 435.83ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 29.9MB in the beginning and 43.1MB in the end (delta: -13.2MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2022-07-21 08:51:54,778 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.38ms. Allocated memory is still 69.2MB. Free memory was 43.1MB in the beginning and 41.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:51:54,778 INFO L158 Benchmark]: Boogie Preprocessor took 32.09ms. Allocated memory is still 69.2MB. Free memory was 41.0MB in the beginning and 39.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:51:54,779 INFO L158 Benchmark]: RCFGBuilder took 469.55ms. Allocated memory is still 69.2MB. Free memory was 39.4MB in the beginning and 43.1MB in the end (delta: -3.7MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2022-07-21 08:51:54,779 INFO L158 Benchmark]: TraceAbstraction took 2356.07ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 42.5MB in the beginning and 32.3MB in the end (delta: 10.2MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-07-21 08:51:54,780 INFO L158 Benchmark]: Witness Printer took 51.58ms. Allocated memory is still 88.1MB. Free memory was 32.3MB in the beginning and 29.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:51:54,781 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 54.5MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 435.83ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 29.9MB in the beginning and 43.1MB in the end (delta: -13.2MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.38ms. Allocated memory is still 69.2MB. Free memory was 43.1MB in the beginning and 41.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.09ms. Allocated memory is still 69.2MB. Free memory was 41.0MB in the beginning and 39.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 469.55ms. Allocated memory is still 69.2MB. Free memory was 39.4MB in the beginning and 43.1MB in the end (delta: -3.7MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2356.07ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 42.5MB in the beginning and 32.3MB in the end (delta: 10.2MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * Witness Printer took 51.58ms. Allocated memory is still 88.1MB. Free memory was 32.3MB in the beginning and 29.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 691]: 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 3 procedures, 131 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 185 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 185 mSDsluCounter, 410 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 355 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 385 IncrementalHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 57 mSDtfsCounter, 385 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=201occurred in iteration=0, InterpolantAutomatonStates: 40, 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, 0.6s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 908 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-21 08:51:54,807 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