./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/10-synch_03-two_unique.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/10-synch_03-two_unique.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9672e6ae87a72de159ae3bc4275af34a3d8ca73d27f8f7f38f7b3aa006285dad --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 21:33:28,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:33:28,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:33:28,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:33:28,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:33:28,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:33:28,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:33:28,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:33:28,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:33:28,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:33:28,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:33:28,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:33:28,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:33:28,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:33:28,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:33:28,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:33:28,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:33:28,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:33:28,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:33:28,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:33:28,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:33:28,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:33:28,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:33:28,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:33:28,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:33:28,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:33:28,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:33:28,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:33:28,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:33:28,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:33:28,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:33:28,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:33:28,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:33:28,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:33:28,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:33:28,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:33:28,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:33:28,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:33:28,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:33:28,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:33:28,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:33:28,573 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 21:33:28,606 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:33:28,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:33:28,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:33:28,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:33:28,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:33:28,609 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:33:28,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:33:28,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:33:28,610 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:33:28,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:33:28,611 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:33:28,611 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:33:28,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:33:28,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:33:28,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:33:28,612 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:33:28,612 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:33:28,612 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:33:28,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:33:28,613 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:33:28,613 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:33:28,613 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:33:28,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:33:28,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:33:28,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:33:28,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:33:28,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:33:28,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:33:28,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 21:33:28,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 21:33:28,615 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:33:28,615 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:33:28,615 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:33:28,616 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:33:28,616 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9672e6ae87a72de159ae3bc4275af34a3d8ca73d27f8f7f38f7b3aa006285dad Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:33:28,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:33:28,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:33:28,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:33:28,973 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:33:28,974 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:33:28,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/10-synch_03-two_unique.i [2023-08-29 21:33:30,160 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:33:30,422 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:33:30,422 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/10-synch_03-two_unique.i [2023-08-29 21:33:30,459 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0359de8/1e4267e3f5d146319c29fa9c5c7aebce/FLAGc50ae22e9 [2023-08-29 21:33:30,474 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0359de8/1e4267e3f5d146319c29fa9c5c7aebce [2023-08-29 21:33:30,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:33:30,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:33:30,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:33:30,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:33:30,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:33:30,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:33:30" (1/1) ... [2023-08-29 21:33:30,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212f437e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:30, skipping insertion in model container [2023-08-29 21:33:30,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:33:30" (1/1) ... [2023-08-29 21:33:30,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:33:30,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:33:30,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:33:30,819 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:33:30,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:33:30,934 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:33:30,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:30 WrapperNode [2023-08-29 21:33:30,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:33:30,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:33:30,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:33:30,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:33:30,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:30" (1/1) ... [2023-08-29 21:33:30,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:30" (1/1) ... [2023-08-29 21:33:30,969 INFO L138 Inliner]: procedures = 260, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2023-08-29 21:33:30,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:33:30,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:33:30,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:33:30,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:33:30,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:30" (1/1) ... [2023-08-29 21:33:30,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:30" (1/1) ... [2023-08-29 21:33:30,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:30" (1/1) ... [2023-08-29 21:33:30,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:30" (1/1) ... [2023-08-29 21:33:30,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:30" (1/1) ... [2023-08-29 21:33:30,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:30" (1/1) ... [2023-08-29 21:33:30,985 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:30" (1/1) ... [2023-08-29 21:33:30,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:30" (1/1) ... [2023-08-29 21:33:30,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:33:30,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:33:30,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:33:30,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:33:30,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:30" (1/1) ... [2023-08-29 21:33:31,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:33:31,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:33:31,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 21:33:31,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 21:33:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2023-08-29 21:33:31,060 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2023-08-29 21:33:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2023-08-29 21:33:31,061 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2023-08-29 21:33:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:33:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:33:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 21:33:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:33:31,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:33:31,062 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 21:33:31,245 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:33:31,247 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:33:31,373 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:33:31,378 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:33:31,378 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 21:33:31,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:33:31 BoogieIcfgContainer [2023-08-29 21:33:31,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:33:31,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:33:31,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:33:31,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:33:31,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:33:30" (1/3) ... [2023-08-29 21:33:31,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c646f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:33:31, skipping insertion in model container [2023-08-29 21:33:31,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:30" (2/3) ... [2023-08-29 21:33:31,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c646f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:33:31, skipping insertion in model container [2023-08-29 21:33:31,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:33:31" (3/3) ... [2023-08-29 21:33:31,387 INFO L112 eAbstractionObserver]: Analyzing ICFG 10-synch_03-two_unique.i [2023-08-29 21:33:31,413 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:33:31,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-29 21:33:31,414 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:33:31,471 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 21:33:31,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 46 transitions, 102 flow [2023-08-29 21:33:31,527 INFO L130 PetriNetUnfolder]: 0/44 cut-off events. [2023-08-29 21:33:31,528 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:33:31,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 44 events. 0/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-29 21:33:31,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 46 transitions, 102 flow [2023-08-29 21:33:31,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 40 transitions, 86 flow [2023-08-29 21:33:31,540 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:33:31,547 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 40 transitions, 86 flow [2023-08-29 21:33:31,552 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 40 transitions, 86 flow [2023-08-29 21:33:31,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 40 transitions, 86 flow [2023-08-29 21:33:31,562 INFO L130 PetriNetUnfolder]: 0/40 cut-off events. [2023-08-29 21:33:31,563 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:33:31,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-29 21:33:31,564 INFO L119 LiptonReduction]: Number of co-enabled transitions 224 [2023-08-29 21:33:33,176 INFO L134 LiptonReduction]: Checked pairs total: 154 [2023-08-29 21:33:33,176 INFO L136 LiptonReduction]: Total number of compositions: 41 [2023-08-29 21:33:33,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:33:33,193 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3146de6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:33:33,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-29 21:33:33,194 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 21:33:33,195 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:33:33,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:33:33,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 21:33:33,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-29 21:33:33,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:33:33,202 INFO L85 PathProgramCache]: Analyzing trace with hash 172, now seen corresponding path program 1 times [2023-08-29 21:33:33,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:33:33,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256674579] [2023-08-29 21:33:33,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:33:33,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:33:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:33:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:33:33,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:33:33,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256674579] [2023-08-29 21:33:33,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256674579] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:33:33,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:33:33,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 21:33:33,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271016392] [2023-08-29 21:33:33,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:33:33,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 21:33:33,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:33:33,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 21:33:33,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 21:33:33,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 87 [2023-08-29 21:33:33,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 28 flow. Second operand has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:33,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:33:33,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 87 [2023-08-29 21:33:33,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:33:33,390 INFO L130 PetriNetUnfolder]: 9/26 cut-off events. [2023-08-29 21:33:33,390 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:33:33,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 26 events. 9/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 44 event pairs, 9 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 52. Up to 27 conditions per place. [2023-08-29 21:33:33,393 INFO L137 encePairwiseOnDemand]: 85/87 looper letters, 9 selfloop transitions, 0 changer transitions 0/9 dead transitions. [2023-08-29 21:33:33,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 9 transitions, 42 flow [2023-08-29 21:33:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 21:33:33,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 21:33:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 99 transitions. [2023-08-29 21:33:33,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2023-08-29 21:33:33,404 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 99 transitions. [2023-08-29 21:33:33,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 99 transitions. [2023-08-29 21:33:33,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:33:33,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 99 transitions. [2023-08-29 21:33:33,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:33,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:33,416 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:33,417 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 28 flow. Second operand 2 states and 99 transitions. [2023-08-29 21:33:33,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 9 transitions, 42 flow [2023-08-29 21:33:33,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 9 transitions, 40 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:33:33,422 INFO L231 Difference]: Finished difference. Result has 15 places, 9 transitions, 22 flow [2023-08-29 21:33:33,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=22, PETRI_PLACES=15, PETRI_TRANSITIONS=9} [2023-08-29 21:33:33,426 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -3 predicate places. [2023-08-29 21:33:33,426 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 9 transitions, 22 flow [2023-08-29 21:33:33,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:33,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:33:33,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:33:33,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 21:33:33,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-29 21:33:33,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:33:33,429 INFO L85 PathProgramCache]: Analyzing trace with hash 169457, now seen corresponding path program 1 times [2023-08-29 21:33:33,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:33:33,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078278409] [2023-08-29 21:33:33,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:33:33,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:33:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:33:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:33:33,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:33:33,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078278409] [2023-08-29 21:33:33,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078278409] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:33:33,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:33:33,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:33:33,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819045253] [2023-08-29 21:33:33,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:33:33,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:33:33,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:33:33,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:33:33,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:33:33,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 87 [2023-08-29 21:33:33,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 9 transitions, 22 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:33,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:33:33,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 87 [2023-08-29 21:33:33,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:33:33,683 INFO L130 PetriNetUnfolder]: 8/23 cut-off events. [2023-08-29 21:33:33,683 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:33:33,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 23 events. 8/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 4 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 52. Up to 15 conditions per place. [2023-08-29 21:33:33,684 INFO L137 encePairwiseOnDemand]: 84/87 looper letters, 8 selfloop transitions, 2 changer transitions 0/10 dead transitions. [2023-08-29 21:33:33,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 10 transitions, 44 flow [2023-08-29 21:33:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:33:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:33:33,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2023-08-29 21:33:33,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019157088122606 [2023-08-29 21:33:33,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 131 transitions. [2023-08-29 21:33:33,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 131 transitions. [2023-08-29 21:33:33,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:33:33,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 131 transitions. [2023-08-29 21:33:33,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:33,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:33,689 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:33,689 INFO L175 Difference]: Start difference. First operand has 15 places, 9 transitions, 22 flow. Second operand 3 states and 131 transitions. [2023-08-29 21:33:33,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 10 transitions, 44 flow [2023-08-29 21:33:33,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 10 transitions, 44 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:33:33,690 INFO L231 Difference]: Finished difference. Result has 16 places, 8 transitions, 24 flow [2023-08-29 21:33:33,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=24, PETRI_PLACES=16, PETRI_TRANSITIONS=8} [2023-08-29 21:33:33,691 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -2 predicate places. [2023-08-29 21:33:33,691 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 8 transitions, 24 flow [2023-08-29 21:33:33,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:33,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:33:33,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:33:33,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 21:33:33,692 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-29 21:33:33,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:33:33,693 INFO L85 PathProgramCache]: Analyzing trace with hash 169456, now seen corresponding path program 1 times [2023-08-29 21:33:33,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:33:33,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091867242] [2023-08-29 21:33:33,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:33:33,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:33:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:33:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:33:33,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:33:33,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091867242] [2023-08-29 21:33:33,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091867242] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:33:33,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:33:33,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:33:33,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545467180] [2023-08-29 21:33:33,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:33:33,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:33:33,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:33:33,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:33:33,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:33:33,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 87 [2023-08-29 21:33:33,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 8 transitions, 24 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:33,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:33:33,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 87 [2023-08-29 21:33:33,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:33:33,804 INFO L130 PetriNetUnfolder]: 7/20 cut-off events. [2023-08-29 21:33:33,804 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 21:33:33,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 20 events. 7/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 3 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 51. Up to 12 conditions per place. [2023-08-29 21:33:33,805 INFO L137 encePairwiseOnDemand]: 84/87 looper letters, 7 selfloop transitions, 2 changer transitions 0/9 dead transitions. [2023-08-29 21:33:33,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 9 transitions, 44 flow [2023-08-29 21:33:33,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:33:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:33:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2023-08-29 21:33:33,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46360153256704983 [2023-08-29 21:33:33,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2023-08-29 21:33:33,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2023-08-29 21:33:33,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:33:33,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2023-08-29 21:33:33,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:33,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:33,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:33,810 INFO L175 Difference]: Start difference. First operand has 16 places, 8 transitions, 24 flow. Second operand 3 states and 121 transitions. [2023-08-29 21:33:33,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 9 transitions, 44 flow [2023-08-29 21:33:33,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 9 transitions, 40 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:33:33,811 INFO L231 Difference]: Finished difference. Result has 15 places, 7 transitions, 22 flow [2023-08-29 21:33:33,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=22, PETRI_PLACES=15, PETRI_TRANSITIONS=7} [2023-08-29 21:33:33,812 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -3 predicate places. [2023-08-29 21:33:33,812 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 7 transitions, 22 flow [2023-08-29 21:33:33,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:33,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:33:33,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 21:33:33,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 21:33:33,813 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-29 21:33:33,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:33:33,814 INFO L85 PathProgramCache]: Analyzing trace with hash 162849525, now seen corresponding path program 1 times [2023-08-29 21:33:33,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:33:33,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485019091] [2023-08-29 21:33:33,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:33:33,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:33:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:33:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:33:33,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:33:33,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485019091] [2023-08-29 21:33:33,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485019091] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:33:33,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:33:33,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:33:33,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512925327] [2023-08-29 21:33:33,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:33:33,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:33:33,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:33:34,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:33:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:33:34,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 87 [2023-08-29 21:33:34,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 7 transitions, 22 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:34,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:33:34,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 87 [2023-08-29 21:33:34,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:33:34,045 INFO L130 PetriNetUnfolder]: 3/12 cut-off events. [2023-08-29 21:33:34,045 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 21:33:34,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 12 events. 3/12 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 3 based on Foata normal form. 4/16 useless extension candidates. Maximal degree in co-relation 31. Up to 12 conditions per place. [2023-08-29 21:33:34,046 INFO L137 encePairwiseOnDemand]: 85/87 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-08-29 21:33:34,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 6 transitions, 30 flow [2023-08-29 21:33:34,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:33:34,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:33:34,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2023-08-29 21:33:34,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46360153256704983 [2023-08-29 21:33:34,050 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2023-08-29 21:33:34,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2023-08-29 21:33:34,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:33:34,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2023-08-29 21:33:34,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:34,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:34,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:34,058 INFO L175 Difference]: Start difference. First operand has 15 places, 7 transitions, 22 flow. Second operand 3 states and 121 transitions. [2023-08-29 21:33:34,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 6 transitions, 30 flow [2023-08-29 21:33:34,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 6 transitions, 29 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:33:34,059 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-08-29 21:33:34,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-08-29 21:33:34,064 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -3 predicate places. [2023-08-29 21:33:34,064 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-08-29 21:33:34,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:34,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2023-08-29 21:33:34,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2023-08-29 21:33:34,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-08-29 21:33:34,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-08-29 21:33:34,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2023-08-29 21:33:34,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-29 21:33:34,069 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-08-29 21:33:34,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 21:33:34,069 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-29 21:33:34,073 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 21:33:34,073 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 21:33:34,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:33:34 BasicIcfg [2023-08-29 21:33:34,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 21:33:34,082 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 21:33:34,082 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 21:33:34,082 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 21:33:34,083 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:33:31" (3/4) ... [2023-08-29 21:33:34,085 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 21:33:34,091 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f1 [2023-08-29 21:33:34,091 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2023-08-29 21:33:34,094 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-08-29 21:33:34,095 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:33:34,095 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:33:34,118 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 21:33:34,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 21:33:34,119 INFO L158 Benchmark]: Toolchain (without parser) took 3642.37ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 54.2MB in the beginning and 37.1MB in the end (delta: 17.1MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. [2023-08-29 21:33:34,120 INFO L158 Benchmark]: CDTParser took 0.79ms. Allocated memory is still 60.8MB. Free memory is still 38.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:33:34,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 457.14ms. Allocated memory is still 77.6MB. Free memory was 54.2MB in the beginning and 47.3MB in the end (delta: 6.9MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2023-08-29 21:33:34,120 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.97ms. Allocated memory is still 77.6MB. Free memory was 47.3MB in the beginning and 45.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:33:34,121 INFO L158 Benchmark]: Boogie Preprocessor took 17.51ms. Allocated memory is still 77.6MB. Free memory was 45.2MB in the beginning and 43.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:33:34,121 INFO L158 Benchmark]: RCFGBuilder took 392.14ms. Allocated memory is still 77.6MB. Free memory was 43.8MB in the beginning and 32.3MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-29 21:33:34,121 INFO L158 Benchmark]: TraceAbstraction took 2699.98ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 31.6MB in the beginning and 40.0MB in the end (delta: -8.4MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2023-08-29 21:33:34,122 INFO L158 Benchmark]: Witness Printer took 36.68ms. Allocated memory is still 94.4MB. Free memory was 40.0MB in the beginning and 37.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 21:33:34,123 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79ms. Allocated memory is still 60.8MB. Free memory is still 38.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 457.14ms. Allocated memory is still 77.6MB. Free memory was 54.2MB in the beginning and 47.3MB in the end (delta: 6.9MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.97ms. Allocated memory is still 77.6MB. Free memory was 47.3MB in the beginning and 45.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.51ms. Allocated memory is still 77.6MB. Free memory was 45.2MB in the beginning and 43.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 392.14ms. Allocated memory is still 77.6MB. Free memory was 43.8MB in the beginning and 32.3MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2699.98ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 31.6MB in the beginning and 40.0MB in the end (delta: -8.4MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Witness Printer took 36.68ms. Allocated memory is still 94.4MB. Free memory was 40.0MB in the beginning and 37.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 47 PlacesBefore, 18 PlacesAfterwards, 40 TransitionsBefore, 11 TransitionsAfterwards, 224 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 41 TotalNumberOfCompositions, 154 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 154, independent: 154, independent conditional: 0, independent unconditional: 154, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 107, independent: 107, independent conditional: 0, independent unconditional: 107, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 154, independent: 47, independent conditional: 0, independent unconditional: 47, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 107, unknown conditional: 0, unknown unconditional: 107] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 927]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 59 locations, 7 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: 2.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 101 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 107 IncrementalHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 10 mSDtfsCounter, 107 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 0.4s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 84 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 21:33:34,142 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