./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/04-mutex_51-mutex_ptr.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/04-mutex_51-mutex_ptr.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 676d96662ae61a9d27f232e6ef1f1837cf504ffa210b7be2fd6286f04a0fe098 --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 21:15:52,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:15:52,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:15:52,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:15:52,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:15:52,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:15:52,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:15:52,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:15:52,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:15:52,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:15:52,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:15:52,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:15:52,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:15:52,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:15:52,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:15:52,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:15:52,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:15:52,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:15:52,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:15:52,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:15:52,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:15:52,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:15:52,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:15:52,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:15:52,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:15:52,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:15:52,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:15:52,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:15:52,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:15:52,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:15:52,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:15:52,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:15:52,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:15:52,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:15:52,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:15:52,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:15:52,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:15:52,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:15:52,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:15:52,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:15:52,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:15:52,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 21:15:52,899 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:15:52,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:15:52,901 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:15:52,901 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:15:52,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:15:52,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:15:52,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:15:52,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:15:52,903 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:15:52,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:15:52,904 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:15:52,904 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:15:52,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:15:52,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:15:52,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:15:52,905 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:15:52,905 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:15:52,905 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:15:52,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:15:52,905 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:15:52,906 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:15:52,906 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:15:52,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:15:52,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:15:52,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:15:52,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:15:52,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:15:52,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:15:52,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 21:15:52,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 21:15:52,908 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:15:52,908 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:15:52,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:15:52,908 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:15:52,908 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 676d96662ae61a9d27f232e6ef1f1837cf504ffa210b7be2fd6286f04a0fe098 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:15:53,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:15:53,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:15:53,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:15:53,215 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:15:53,215 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:15:53,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_51-mutex_ptr.i [2023-08-29 21:15:54,357 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:15:54,623 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:15:54,624 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_51-mutex_ptr.i [2023-08-29 21:15:54,639 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0db513f84/a82e77bc364c40ad9ded431ff5ef3ff5/FLAG26d28b55f [2023-08-29 21:15:54,655 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0db513f84/a82e77bc364c40ad9ded431ff5ef3ff5 [2023-08-29 21:15:54,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:15:54,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:15:54,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:15:54,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:15:54,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:15:54,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:15:54" (1/1) ... [2023-08-29 21:15:54,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493026bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:15:54, skipping insertion in model container [2023-08-29 21:15:54,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:15:54" (1/1) ... [2023-08-29 21:15:54,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:15:54,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:15:55,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:15:55,126 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:15:55,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:15:55,288 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:15:55,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:15:55 WrapperNode [2023-08-29 21:15:55,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:15:55,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:15:55,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:15:55,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:15:55,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:15:55" (1/1) ... [2023-08-29 21:15:55,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:15:55" (1/1) ... [2023-08-29 21:15:55,349 INFO L138 Inliner]: procedures = 262, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2023-08-29 21:15:55,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:15:55,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:15:55,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:15:55,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:15:55,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:15:55" (1/1) ... [2023-08-29 21:15:55,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:15:55" (1/1) ... [2023-08-29 21:15:55,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:15:55" (1/1) ... [2023-08-29 21:15:55,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:15:55" (1/1) ... [2023-08-29 21:15:55,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:15:55" (1/1) ... [2023-08-29 21:15:55,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:15:55" (1/1) ... [2023-08-29 21:15:55,385 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:15:55" (1/1) ... [2023-08-29 21:15:55,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:15:55" (1/1) ... [2023-08-29 21:15:55,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:15:55,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:15:55,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:15:55,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:15:55,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:15:55" (1/1) ... [2023-08-29 21:15:55,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:15:55,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:15:55,427 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 21:15:55,457 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 21:15:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:15:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:15:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 21:15:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 21:15:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 21:15:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 21:15:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 21:15:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 21:15:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 21:15:55,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:15:55,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:15:55,483 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 21:15:55,650 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:15:55,651 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:15:55,813 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:15:55,819 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:15:55,819 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 21:15:55,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:15:55 BoogieIcfgContainer [2023-08-29 21:15:55,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:15:55,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:15:55,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:15:55,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:15:55,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:15:54" (1/3) ... [2023-08-29 21:15:55,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303c6147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:15:55, skipping insertion in model container [2023-08-29 21:15:55,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:15:55" (2/3) ... [2023-08-29 21:15:55,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303c6147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:15:55, skipping insertion in model container [2023-08-29 21:15:55,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:15:55" (3/3) ... [2023-08-29 21:15:55,828 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_51-mutex_ptr.i [2023-08-29 21:15:55,847 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:15:55,847 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-29 21:15:55,848 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:15:55,916 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 21:15:55,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 78 transitions, 164 flow [2023-08-29 21:15:56,013 INFO L130 PetriNetUnfolder]: 0/77 cut-off events. [2023-08-29 21:15:56,013 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:15:56,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 77 events. 0/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 75 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-29 21:15:56,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 78 transitions, 164 flow [2023-08-29 21:15:56,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 73 transitions, 152 flow [2023-08-29 21:15:56,026 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:15:56,045 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 73 transitions, 152 flow [2023-08-29 21:15:56,049 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 73 transitions, 152 flow [2023-08-29 21:15:56,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 73 transitions, 152 flow [2023-08-29 21:15:56,073 INFO L130 PetriNetUnfolder]: 0/73 cut-off events. [2023-08-29 21:15:56,076 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:15:56,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 73 events. 0/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-29 21:15:56,077 INFO L119 LiptonReduction]: Number of co-enabled transitions 512 [2023-08-29 21:15:58,761 INFO L134 LiptonReduction]: Checked pairs total: 1703 [2023-08-29 21:15:58,762 INFO L136 LiptonReduction]: Total number of compositions: 72 [2023-08-29 21:15:58,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:15:58,779 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;@1ea253f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:15:58,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-29 21:15:58,781 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 21:15:58,781 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:15:58,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:15:58,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 21:15:58,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-08-29 21:15:58,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:15:58,787 INFO L85 PathProgramCache]: Analyzing trace with hash 277, now seen corresponding path program 1 times [2023-08-29 21:15:58,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:15:58,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459269961] [2023-08-29 21:15:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:15:58,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:15:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:15:58,888 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 21:15:58,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:15:58,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459269961] [2023-08-29 21:15:58,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459269961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:15:58,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:15:58,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 21:15:58,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9121506] [2023-08-29 21:15:58,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:15:58,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 21:15:58,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:15:58,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 21:15:58,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 21:15:58,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 150 [2023-08-29 21:15:58,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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 21:15:58,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:15:58,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 150 [2023-08-29 21:15:58,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:15:58,992 INFO L130 PetriNetUnfolder]: 35/100 cut-off events. [2023-08-29 21:15:58,992 INFO L131 PetriNetUnfolder]: For 3/4 co-relation queries the response was YES. [2023-08-29 21:15:58,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 100 events. 35/100 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 367 event pairs, 35 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 178. Up to 87 conditions per place. [2023-08-29 21:15:58,996 INFO L137 encePairwiseOnDemand]: 144/150 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-29 21:15:58,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 19 transitions, 76 flow [2023-08-29 21:15:58,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 21:15:59,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 21:15:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 174 transitions. [2023-08-29 21:15:59,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58 [2023-08-29 21:15:59,011 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 174 transitions. [2023-08-29 21:15:59,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 174 transitions. [2023-08-29 21:15:59,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:15:59,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 174 transitions. [2023-08-29 21:15:59,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 87.0) internal successors, (174), 2 states have internal predecessors, (174), 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 21:15:59,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 21:15:59,026 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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 21:15:59,028 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 56 flow. Second operand 2 states and 174 transitions. [2023-08-29 21:15:59,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 19 transitions, 76 flow [2023-08-29 21:15:59,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:15:59,032 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 40 flow [2023-08-29 21:15:59,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2023-08-29 21:15:59,039 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-08-29 21:15:59,039 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 40 flow [2023-08-29 21:15:59,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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 21:15:59,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:15:59,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:15:59,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 21:15:59,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-08-29 21:15:59,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:15:59,048 INFO L85 PathProgramCache]: Analyzing trace with hash 269868, now seen corresponding path program 1 times [2023-08-29 21:15:59,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:15:59,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806141582] [2023-08-29 21:15:59,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:15:59,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:15:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:15:59,305 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 21:15:59,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:15:59,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806141582] [2023-08-29 21:15:59,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806141582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:15:59,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:15:59,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:15:59,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900485223] [2023-08-29 21:15:59,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:15:59,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:15:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:15:59,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:15:59,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:15:59,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 150 [2023-08-29 21:15:59,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 21:15:59,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:15:59,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 150 [2023-08-29 21:15:59,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:15:59,397 INFO L130 PetriNetUnfolder]: 24/73 cut-off events. [2023-08-29 21:15:59,398 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-29 21:15:59,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 73 events. 24/73 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 245 event pairs, 24 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 136. Up to 61 conditions per place. [2023-08-29 21:15:59,399 INFO L137 encePairwiseOnDemand]: 146/150 looper letters, 12 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2023-08-29 21:15:59,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 64 flow [2023-08-29 21:15:59,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:15:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:15:59,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2023-08-29 21:15:59,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022222222222222 [2023-08-29 21:15:59,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 226 transitions. [2023-08-29 21:15:59,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 226 transitions. [2023-08-29 21:15:59,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:15:59,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 226 transitions. [2023-08-29 21:15:59,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 21:15:59,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 21:15:59,405 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 21:15:59,405 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 40 flow. Second operand 3 states and 226 transitions. [2023-08-29 21:15:59,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 64 flow [2023-08-29 21:15:59,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 64 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:15:59,416 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 40 flow [2023-08-29 21:15:59,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2023-08-29 21:15:59,417 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-08-29 21:15:59,417 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 40 flow [2023-08-29 21:15:59,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 21:15:59,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:15:59,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:15:59,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 21:15:59,419 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-08-29 21:15:59,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:15:59,419 INFO L85 PathProgramCache]: Analyzing trace with hash 269870, now seen corresponding path program 1 times [2023-08-29 21:15:59,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:15:59,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765507808] [2023-08-29 21:15:59,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:15:59,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:15:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:15:59,530 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 21:15:59,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:15:59,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765507808] [2023-08-29 21:15:59,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765507808] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:15:59,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:15:59,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:15:59,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301348544] [2023-08-29 21:15:59,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:15:59,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:15:59,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:15:59,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:15:59,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:15:59,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 150 [2023-08-29 21:15:59,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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 21:15:59,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:15:59,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 150 [2023-08-29 21:15:59,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:15:59,594 INFO L130 PetriNetUnfolder]: 15/50 cut-off events. [2023-08-29 21:15:59,595 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-29 21:15:59,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 50 events. 15/50 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 135 event pairs, 15 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 95. Up to 42 conditions per place. [2023-08-29 21:15:59,595 INFO L137 encePairwiseOnDemand]: 147/150 looper letters, 11 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-08-29 21:15:59,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 15 transitions, 60 flow [2023-08-29 21:15:59,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:15:59,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:15:59,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-08-29 21:15:59,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177777777777778 [2023-08-29 21:15:59,598 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-08-29 21:15:59,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-08-29 21:15:59,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:15:59,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-08-29 21:15:59,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 21:15:59,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 21:15:59,600 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 21:15:59,601 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 40 flow. Second operand 3 states and 233 transitions. [2023-08-29 21:15:59,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 15 transitions, 60 flow [2023-08-29 21:15:59,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:15:59,602 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 34 flow [2023-08-29 21:15:59,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2023-08-29 21:15:59,602 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -9 predicate places. [2023-08-29 21:15:59,603 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 34 flow [2023-08-29 21:15:59,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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 21:15:59,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:15:59,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:15:59,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 21:15:59,604 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-08-29 21:15:59,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:15:59,604 INFO L85 PathProgramCache]: Analyzing trace with hash -550320734, now seen corresponding path program 1 times [2023-08-29 21:15:59,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:15:59,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966594764] [2023-08-29 21:15:59,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:15:59,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:15:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:15:59,638 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 21:15:59,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:15:59,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966594764] [2023-08-29 21:15:59,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966594764] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:15:59,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:15:59,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:15:59,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334823606] [2023-08-29 21:15:59,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:15:59,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:15:59,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:15:59,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:15:59,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:15:59,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 150 [2023-08-29 21:15:59,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 21:15:59,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:15:59,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 150 [2023-08-29 21:15:59,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:15:59,709 INFO L130 PetriNetUnfolder]: 15/47 cut-off events. [2023-08-29 21:15:59,709 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:15:59,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 47 events. 15/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 113 event pairs, 15 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 91. Up to 41 conditions per place. [2023-08-29 21:15:59,710 INFO L137 encePairwiseOnDemand]: 147/150 looper letters, 10 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2023-08-29 21:15:59,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 56 flow [2023-08-29 21:15:59,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:15:59,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:15:59,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2023-08-29 21:15:59,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4822222222222222 [2023-08-29 21:15:59,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2023-08-29 21:15:59,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2023-08-29 21:15:59,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:15:59,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2023-08-29 21:15:59,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 21:15:59,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 21:15:59,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 21:15:59,715 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 34 flow. Second operand 3 states and 217 transitions. [2023-08-29 21:15:59,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 56 flow [2023-08-29 21:15:59,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 55 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:15:59,716 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 35 flow [2023-08-29 21:15:59,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-29 21:15:59,717 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -9 predicate places. [2023-08-29 21:15:59,717 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 35 flow [2023-08-29 21:15:59,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 21:15:59,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:15:59,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:15:59,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 21:15:59,718 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-08-29 21:15:59,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:15:59,718 INFO L85 PathProgramCache]: Analyzing trace with hash -550320733, now seen corresponding path program 1 times [2023-08-29 21:15:59,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:15:59,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914316778] [2023-08-29 21:15:59,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:15:59,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:15:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:15:59,791 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 21:15:59,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:15:59,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914316778] [2023-08-29 21:15:59,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914316778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:15:59,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:15:59,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:15:59,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592890713] [2023-08-29 21:15:59,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:15:59,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:15:59,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:15:59,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:15:59,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:15:59,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 150 [2023-08-29 21:15:59,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:15:59,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:15:59,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 150 [2023-08-29 21:15:59,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:15:59,841 INFO L130 PetriNetUnfolder]: 9/36 cut-off events. [2023-08-29 21:15:59,841 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-29 21:15:59,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 36 events. 9/36 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 77 event pairs, 9 based on Foata normal form. 4/39 useless extension candidates. Maximal degree in co-relation 68. Up to 27 conditions per place. [2023-08-29 21:15:59,842 INFO L137 encePairwiseOnDemand]: 147/150 looper letters, 8 selfloop transitions, 2 changer transitions 0/13 dead transitions. [2023-08-29 21:15:59,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 53 flow [2023-08-29 21:15:59,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:15:59,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:15:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-08-29 21:15:59,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49777777777777776 [2023-08-29 21:15:59,844 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-08-29 21:15:59,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-08-29 21:15:59,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:15:59,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-08-29 21:15:59,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 21:15:59,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 21:15:59,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 21:15:59,846 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 35 flow. Second operand 3 states and 224 transitions. [2023-08-29 21:15:59,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 53 flow [2023-08-29 21:15:59,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 49 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:15:59,847 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 33 flow [2023-08-29 21:15:59,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=33, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2023-08-29 21:15:59,850 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -10 predicate places. [2023-08-29 21:15:59,850 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 33 flow [2023-08-29 21:15:59,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:15:59,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:15:59,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:15:59,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 21:15:59,851 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-08-29 21:15:59,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:15:59,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1115214260, now seen corresponding path program 1 times [2023-08-29 21:15:59,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:15:59,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644722097] [2023-08-29 21:15:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:15:59,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:15:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:15:59,950 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 21:15:59,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:15:59,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644722097] [2023-08-29 21:15:59,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644722097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:15:59,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:15:59,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:15:59,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279494821] [2023-08-29 21:15:59,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:15:59,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:15:59,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:15:59,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:15:59,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:15:59,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 150 [2023-08-29 21:15:59,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 21:15:59,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:15:59,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 150 [2023-08-29 21:15:59,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:15:59,990 INFO L130 PetriNetUnfolder]: 1/21 cut-off events. [2023-08-29 21:15:59,991 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:15:59,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 21 events. 1/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 1 based on Foata normal form. 5/26 useless extension candidates. Maximal degree in co-relation 43. Up to 10 conditions per place. [2023-08-29 21:15:59,994 INFO L137 encePairwiseOnDemand]: 146/150 looper letters, 7 selfloop transitions, 4 changer transitions 0/13 dead transitions. [2023-08-29 21:15:59,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 55 flow [2023-08-29 21:15:59,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:15:59,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:15:59,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-08-29 21:15:59,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4955555555555556 [2023-08-29 21:15:59,995 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-08-29 21:15:59,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-08-29 21:15:59,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:15:59,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-08-29 21:15:59,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:15:59,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 21:15:59,998 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 21:15:59,998 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 33 flow. Second operand 3 states and 223 transitions. [2023-08-29 21:15:59,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 55 flow [2023-08-29 21:15:59,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 51 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:15:59,998 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 37 flow [2023-08-29 21:15:59,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2023-08-29 21:16:00,001 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -10 predicate places. [2023-08-29 21:16:00,001 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 37 flow [2023-08-29 21:16:00,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 21:16:00,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:16:00,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:16:00,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 21:16:00,002 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-08-29 21:16:00,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:16:00,002 INFO L85 PathProgramCache]: Analyzing trace with hash 306913000, now seen corresponding path program 2 times [2023-08-29 21:16:00,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:16:00,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075596807] [2023-08-29 21:16:00,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:16:00,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:16:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:16:00,124 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 21:16:00,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:16:00,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075596807] [2023-08-29 21:16:00,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075596807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:16:00,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:16:00,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:16:00,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770734592] [2023-08-29 21:16:00,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:16:00,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:16:00,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:16:00,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:16:00,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:16:00,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 150 [2023-08-29 21:16:00,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 21:16:00,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:16:00,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 150 [2023-08-29 21:16:00,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:16:00,170 INFO L130 PetriNetUnfolder]: 1/20 cut-off events. [2023-08-29 21:16:00,170 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:16:00,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 20 events. 1/20 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 1 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 45. Up to 15 conditions per place. [2023-08-29 21:16:00,171 INFO L137 encePairwiseOnDemand]: 148/150 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-29 21:16:00,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 53 flow [2023-08-29 21:16:00,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:16:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:16:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2023-08-29 21:16:00,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022222222222222 [2023-08-29 21:16:00,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 226 transitions. [2023-08-29 21:16:00,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 226 transitions. [2023-08-29 21:16:00,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:16:00,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 226 transitions. [2023-08-29 21:16:00,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 21:16:00,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 21:16:00,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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 21:16:00,181 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 37 flow. Second operand 3 states and 226 transitions. [2023-08-29 21:16:00,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 53 flow [2023-08-29 21:16:00,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:16:00,182 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-29 21:16:00,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-29 21:16:00,182 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -10 predicate places. [2023-08-29 21:16:00,182 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-29 21:16:00,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 21:16:00,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2023-08-29 21:16:00,186 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2023-08-29 21:16:00,186 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2023-08-29 21:16:00,186 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2023-08-29 21:16:00,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2023-08-29 21:16:00,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2023-08-29 21:16:00,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2023-08-29 21:16:00,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2023-08-29 21:16:00,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (9 of 18 remaining) [2023-08-29 21:16:00,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-08-29 21:16:00,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2023-08-29 21:16:00,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2023-08-29 21:16:00,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2023-08-29 21:16:00,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2023-08-29 21:16:00,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2023-08-29 21:16:00,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2023-08-29 21:16:00,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2023-08-29 21:16:00,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2023-08-29 21:16:00,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 21:16:00,189 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-08-29 21:16:00,195 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 21:16:00,195 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 21:16:00,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:16:00 BasicIcfg [2023-08-29 21:16:00,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 21:16:00,206 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 21:16:00,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 21:16:00,206 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 21:16:00,206 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:15:55" (3/4) ... [2023-08-29 21:16:00,208 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 21:16:00,213 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-29 21:16:00,217 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-08-29 21:16:00,217 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 21:16:00,218 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:16:00,248 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 21:16:00,248 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 21:16:00,249 INFO L158 Benchmark]: Toolchain (without parser) took 5590.70ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 47.4MB in the beginning and 63.6MB in the end (delta: -16.2MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2023-08-29 21:16:00,249 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 54.5MB. Free memory is still 32.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:16:00,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 630.81ms. Allocated memory is still 71.3MB. Free memory was 47.2MB in the beginning and 36.9MB in the end (delta: 10.3MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2023-08-29 21:16:00,250 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.64ms. Allocated memory is still 71.3MB. Free memory was 36.9MB in the beginning and 34.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:16:00,250 INFO L158 Benchmark]: Boogie Preprocessor took 42.09ms. Allocated memory is still 71.3MB. Free memory was 34.5MB in the beginning and 33.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:16:00,250 INFO L158 Benchmark]: RCFGBuilder took 427.95ms. Allocated memory is still 71.3MB. Free memory was 33.0MB in the beginning and 38.8MB in the end (delta: -5.8MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2023-08-29 21:16:00,250 INFO L158 Benchmark]: TraceAbstraction took 4382.51ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 38.0MB in the beginning and 66.7MB in the end (delta: -28.7MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2023-08-29 21:16:00,251 INFO L158 Benchmark]: Witness Printer took 42.98ms. Allocated memory is still 104.9MB. Free memory was 66.7MB in the beginning and 63.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:16:00,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 54.5MB. Free memory is still 32.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 630.81ms. Allocated memory is still 71.3MB. Free memory was 47.2MB in the beginning and 36.9MB in the end (delta: 10.3MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.64ms. Allocated memory is still 71.3MB. Free memory was 36.9MB in the beginning and 34.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.09ms. Allocated memory is still 71.3MB. Free memory was 34.5MB in the beginning and 33.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 427.95ms. Allocated memory is still 71.3MB. Free memory was 33.0MB in the beginning and 38.8MB in the end (delta: -5.8MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4382.51ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 38.0MB in the beginning and 66.7MB in the end (delta: -28.7MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Witness Printer took 42.98ms. Allocated memory is still 104.9MB. Free memory was 66.7MB in the beginning and 63.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 77 PlacesBefore, 29 PlacesAfterwards, 73 TransitionsBefore, 25 TransitionsAfterwards, 512 CoEnabledTransitionPairs, 6 FixpointIterations, 43 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 72 TotalNumberOfCompositions, 1703 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 965, independent: 833, independent conditional: 0, independent unconditional: 833, dependent: 132, dependent conditional: 0, dependent unconditional: 132, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 348, independent: 327, independent conditional: 0, independent unconditional: 327, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 965, independent: 506, independent conditional: 0, independent unconditional: 506, dependent: 111, dependent conditional: 0, dependent unconditional: 111, unknown: 348, unknown conditional: 0, unknown unconditional: 348] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, 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: -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: 930]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 97 locations, 18 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: 4.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 336 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 302 IncrementalHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 20 mSDtfsCounter, 302 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, InterpolantAutomatonStates: 20, 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, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 188 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 21:16:00,269 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