./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_03-priv_inv.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/13-privatized_03-priv_inv.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 f20707f1105ba10067156ebf4074b2c6b4682bff1e09b23f43a3f8b7604511aa --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 21:33:32,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:33:32,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:33:32,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:33:32,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:33:32,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:33:32,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:33:33,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:33:33,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:33:33,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:33:33,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:33:33,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:33:33,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:33:33,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:33:33,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:33:33,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:33:33,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:33:33,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:33:33,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:33:33,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:33:33,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:33:33,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:33:33,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:33:33,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:33:33,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:33:33,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:33:33,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:33:33,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:33:33,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:33:33,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:33:33,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:33:33,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:33:33,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:33:33,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:33:33,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:33:33,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:33:33,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:33:33,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:33:33,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:33:33,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:33:33,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:33:33,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 21:33:33,077 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:33:33,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:33:33,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:33:33,079 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:33:33,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:33:33,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:33:33,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:33:33,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:33:33,080 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:33:33,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:33:33,081 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:33:33,081 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:33:33,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:33:33,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:33:33,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:33:33,082 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:33:33,082 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:33:33,082 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:33:33,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:33:33,083 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:33:33,083 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:33:33,083 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:33:33,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:33:33,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:33:33,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:33:33,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:33:33,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:33:33,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:33:33,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 21:33:33,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 21:33:33,085 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:33:33,085 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:33:33,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:33:33,085 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:33:33,086 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f20707f1105ba10067156ebf4074b2c6b4682bff1e09b23f43a3f8b7604511aa Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:33:33,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:33:33,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:33:33,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:33:33,378 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:33:33,379 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:33:33,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_03-priv_inv.i [2023-08-29 21:33:34,473 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:33:34,715 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:33:34,715 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_03-priv_inv.i [2023-08-29 21:33:34,728 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e58236db3/98d16b0099164a05a91eb8b6b5d68239/FLAGd5eede52d [2023-08-29 21:33:34,739 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e58236db3/98d16b0099164a05a91eb8b6b5d68239 [2023-08-29 21:33:34,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:33:34,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:33:34,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:33:34,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:33:34,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:33:34,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:33:34" (1/1) ... [2023-08-29 21:33:34,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b04ecf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:34, skipping insertion in model container [2023-08-29 21:33:34,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:33:34" (1/1) ... [2023-08-29 21:33:34,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:33:34,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:33:35,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:33:35,100 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:33:35,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:33:35,188 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:33:35,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:35 WrapperNode [2023-08-29 21:33:35,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:33:35,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:33:35,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:33:35,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:33:35,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:35" (1/1) ... [2023-08-29 21:33:35,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:35" (1/1) ... [2023-08-29 21:33:35,249 INFO L138 Inliner]: procedures = 165, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 66 [2023-08-29 21:33:35,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:33:35,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:33:35,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:33:35,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:33:35,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:35" (1/1) ... [2023-08-29 21:33:35,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:35" (1/1) ... [2023-08-29 21:33:35,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:35" (1/1) ... [2023-08-29 21:33:35,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:35" (1/1) ... [2023-08-29 21:33:35,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:35" (1/1) ... [2023-08-29 21:33:35,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:35" (1/1) ... [2023-08-29 21:33:35,291 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:35" (1/1) ... [2023-08-29 21:33:35,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:35" (1/1) ... [2023-08-29 21:33:35,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:33:35,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:33:35,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:33:35,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:33:35,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:35" (1/1) ... [2023-08-29 21:33:35,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:33:35,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:33:35,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 21:33:35,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 21:33:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 21:33:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 21:33:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 21:33:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 21:33:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:33:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 21:33:35,385 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 21:33:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:33:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 21:33:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:33:35,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:33:35,387 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 21:33:35,550 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:33:35,551 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:33:35,716 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:33:35,722 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:33:35,722 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 21:33:35,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:33:35 BoogieIcfgContainer [2023-08-29 21:33:35,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:33:35,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:33:35,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:33:35,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:33:35,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:33:34" (1/3) ... [2023-08-29 21:33:35,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6804aeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:33:35, skipping insertion in model container [2023-08-29 21:33:35,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:35" (2/3) ... [2023-08-29 21:33:35,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6804aeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:33:35, skipping insertion in model container [2023-08-29 21:33:35,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:33:35" (3/3) ... [2023-08-29 21:33:35,737 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_03-priv_inv.i [2023-08-29 21:33:35,752 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:33:35,752 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-29 21:33:35,752 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:33:35,815 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 21:33:35,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 88 transitions, 184 flow [2023-08-29 21:33:35,916 INFO L130 PetriNetUnfolder]: 3/87 cut-off events. [2023-08-29 21:33:35,917 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:33:35,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 87 events. 3/87 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-29 21:33:35,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 88 transitions, 184 flow [2023-08-29 21:33:35,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 83 transitions, 172 flow [2023-08-29 21:33:35,930 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:33:35,944 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 83 transitions, 172 flow [2023-08-29 21:33:35,954 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 83 transitions, 172 flow [2023-08-29 21:33:35,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 83 transitions, 172 flow [2023-08-29 21:33:35,980 INFO L130 PetriNetUnfolder]: 3/83 cut-off events. [2023-08-29 21:33:35,981 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:33:35,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 83 events. 3/83 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-29 21:33:35,982 INFO L119 LiptonReduction]: Number of co-enabled transitions 308 [2023-08-29 21:33:39,322 INFO L134 LiptonReduction]: Checked pairs total: 1307 [2023-08-29 21:33:39,322 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-29 21:33:39,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:33:39,354 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;@4f0a0825, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:33:39,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-29 21:33:39,358 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 21:33:39,358 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:33:39,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:33:39,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 21:33:39,360 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-29 21:33:39,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:33:39,365 INFO L85 PathProgramCache]: Analyzing trace with hash 309, now seen corresponding path program 1 times [2023-08-29 21:33:39,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:33:39,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278921300] [2023-08-29 21:33:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:33:39,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:33:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:33:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:33:39,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:33:39,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278921300] [2023-08-29 21:33:39,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278921300] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:33:39,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:33:39,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 21:33:39,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459463309] [2023-08-29 21:33:39,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:33:39,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 21:33:39,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:33:39,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 21:33:39,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 21:33:39,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 168 [2023-08-29 21:33:39,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:39,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:33:39,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 168 [2023-08-29 21:33:39,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:33:39,542 INFO L130 PetriNetUnfolder]: 26/69 cut-off events. [2023-08-29 21:33:39,542 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:33:39,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 69 events. 26/69 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 195 event pairs, 20 based on Foata normal form. 5/56 useless extension candidates. Maximal degree in co-relation 120. Up to 60 conditions per place. [2023-08-29 21:33:39,544 INFO L137 encePairwiseOnDemand]: 165/168 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-29 21:33:39,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 68 flow [2023-08-29 21:33:39,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 21:33:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 21:33:39,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 185 transitions. [2023-08-29 21:33:39,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5505952380952381 [2023-08-29 21:33:39,555 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 185 transitions. [2023-08-29 21:33:39,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 185 transitions. [2023-08-29 21:33:39,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:33:39,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 185 transitions. [2023-08-29 21:33:39,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 92.5) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:39,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:39,565 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:39,567 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 46 flow. Second operand 2 states and 185 transitions. [2023-08-29 21:33:39,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 68 flow [2023-08-29 21:33:39,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 17 transitions, 64 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:33:39,570 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 36 flow [2023-08-29 21:33:39,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2023-08-29 21:33:39,574 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2023-08-29 21:33:39,575 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 36 flow [2023-08-29 21:33:39,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:39,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:33:39,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:33:39,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 21:33:39,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-29 21:33:39,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:33:39,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1854126867, now seen corresponding path program 1 times [2023-08-29 21:33:39,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:33:39,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028063983] [2023-08-29 21:33:39,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:33:39,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:33:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:33:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:33:39,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:33:39,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028063983] [2023-08-29 21:33:39,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028063983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:33:39,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:33:39,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:33:39,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454590919] [2023-08-29 21:33:39,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:33:39,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:33:39,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:33:39,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:33:39,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:33:39,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 168 [2023-08-29 21:33:39,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 36 flow. Second operand has 3 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 21:33:39,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:33:39,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 168 [2023-08-29 21:33:39,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:33:39,828 INFO L130 PetriNetUnfolder]: 21/59 cut-off events. [2023-08-29 21:33:39,828 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:33:39,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 59 events. 21/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 155 event pairs, 16 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 109. Up to 48 conditions per place. [2023-08-29 21:33:39,829 INFO L137 encePairwiseOnDemand]: 165/168 looper letters, 11 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2023-08-29 21:33:39,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 16 transitions, 60 flow [2023-08-29 21:33:39,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:33:39,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:33:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-08-29 21:33:39,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801587301587302 [2023-08-29 21:33:39,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-08-29 21:33:39,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-08-29 21:33:39,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:33:39,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-08-29 21:33:39,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:39,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:39,836 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:39,836 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 36 flow. Second operand 3 states and 242 transitions. [2023-08-29 21:33:39,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 16 transitions, 60 flow [2023-08-29 21:33:39,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 60 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:33:39,837 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 38 flow [2023-08-29 21:33:39,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=20, PETRI_TRANSITIONS=16} [2023-08-29 21:33:39,838 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-08-29 21:33:39,838 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 38 flow [2023-08-29 21:33:39,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 21:33:39,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:33:39,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:33:39,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 21:33:39,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-29 21:33:39,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:33:39,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1854126868, now seen corresponding path program 1 times [2023-08-29 21:33:39,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:33:39,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192517464] [2023-08-29 21:33:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:33:39,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:33:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:33:39,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:33:39,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:33:39,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192517464] [2023-08-29 21:33:39,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192517464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:33:39,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:33:39,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:33:39,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367825644] [2023-08-29 21:33:39,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:33:39,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:33:39,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:33:39,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:33:39,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:33:39,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 168 [2023-08-29 21:33:39,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:39,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:33:39,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 168 [2023-08-29 21:33:39,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:33:40,008 INFO L130 PetriNetUnfolder]: 16/49 cut-off events. [2023-08-29 21:33:40,009 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:33:40,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 49 events. 16/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 118 event pairs, 12 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 91. Up to 38 conditions per place. [2023-08-29 21:33:40,010 INFO L137 encePairwiseOnDemand]: 165/168 looper letters, 10 selfloop transitions, 2 changer transitions 0/15 dead transitions. [2023-08-29 21:33:40,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 60 flow [2023-08-29 21:33:40,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:33:40,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:33:40,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2023-08-29 21:33:40,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2023-08-29 21:33:40,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2023-08-29 21:33:40,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2023-08-29 21:33:40,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:33:40,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2023-08-29 21:33:40,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:40,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:40,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:40,015 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 38 flow. Second operand 3 states and 250 transitions. [2023-08-29 21:33:40,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 60 flow [2023-08-29 21:33:40,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:33:40,016 INFO L231 Difference]: Finished difference. Result has 19 places, 15 transitions, 36 flow [2023-08-29 21:33:40,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=19, PETRI_TRANSITIONS=15} [2023-08-29 21:33:40,017 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2023-08-29 21:33:40,017 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 36 flow [2023-08-29 21:33:40,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:40,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:33:40,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:33:40,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 21:33:40,019 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-29 21:33:40,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:33:40,019 INFO L85 PathProgramCache]: Analyzing trace with hash -121227558, now seen corresponding path program 1 times [2023-08-29 21:33:40,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:33:40,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651560265] [2023-08-29 21:33:40,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:33:40,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:33:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:33:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:33:40,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:33:40,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651560265] [2023-08-29 21:33:40,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651560265] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:33:40,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:33:40,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:33:40,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181061472] [2023-08-29 21:33:40,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:33:40,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:33:40,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:33:40,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:33:40,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:33:40,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 168 [2023-08-29 21:33:40,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:40,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:33:40,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 168 [2023-08-29 21:33:40,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:33:40,162 INFO L130 PetriNetUnfolder]: 6/33 cut-off events. [2023-08-29 21:33:40,162 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:33:40,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 33 events. 6/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 2 based on Foata normal form. 5/36 useless extension candidates. Maximal degree in co-relation 63. Up to 14 conditions per place. [2023-08-29 21:33:40,163 INFO L137 encePairwiseOnDemand]: 163/168 looper letters, 9 selfloop transitions, 5 changer transitions 0/16 dead transitions. [2023-08-29 21:33:40,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 66 flow [2023-08-29 21:33:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:33:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:33:40,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2023-08-29 21:33:40,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2023-08-29 21:33:40,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2023-08-29 21:33:40,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2023-08-29 21:33:40,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:33:40,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2023-08-29 21:33:40,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:40,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:40,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:40,168 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 36 flow. Second operand 3 states and 250 transitions. [2023-08-29 21:33:40,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 66 flow [2023-08-29 21:33:40,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 16 transitions, 62 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:33:40,169 INFO L231 Difference]: Finished difference. Result has 19 places, 15 transitions, 42 flow [2023-08-29 21:33:40,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=19, PETRI_TRANSITIONS=15} [2023-08-29 21:33:40,170 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2023-08-29 21:33:40,170 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 42 flow [2023-08-29 21:33:40,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:40,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:33:40,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:33:40,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 21:33:40,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-29 21:33:40,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:33:40,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1813365522, now seen corresponding path program 2 times [2023-08-29 21:33:40,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:33:40,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79900152] [2023-08-29 21:33:40,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:33:40,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:33:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:33:40,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:33:40,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:33:40,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79900152] [2023-08-29 21:33:40,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79900152] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:33:40,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:33:40,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:33:40,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191221116] [2023-08-29 21:33:40,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:33:40,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:33:40,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:33:40,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:33:40,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:33:40,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 168 [2023-08-29 21:33:40,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:40,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:33:40,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 168 [2023-08-29 21:33:40,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:33:40,316 INFO L130 PetriNetUnfolder]: 6/32 cut-off events. [2023-08-29 21:33:40,316 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-29 21:33:40,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 32 events. 6/32 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 2 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 69. Up to 24 conditions per place. [2023-08-29 21:33:40,317 INFO L137 encePairwiseOnDemand]: 166/168 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-08-29 21:33:40,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 14 transitions, 62 flow [2023-08-29 21:33:40,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:33:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:33:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2023-08-29 21:33:40,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-29 21:33:40,319 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 252 transitions. [2023-08-29 21:33:40,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 252 transitions. [2023-08-29 21:33:40,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:33:40,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 252 transitions. [2023-08-29 21:33:40,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:40,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:40,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:40,323 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 42 flow. Second operand 3 states and 252 transitions. [2023-08-29 21:33:40,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 14 transitions, 62 flow [2023-08-29 21:33:40,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 14 transitions, 57 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:33:40,324 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-29 21:33:40,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-29 21:33:40,327 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2023-08-29 21:33:40,327 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-29 21:33:40,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:33:40,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-08-29 21:33:40,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-08-29 21:33:40,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-08-29 21:33:40,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-08-29 21:33:40,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-08-29 21:33:40,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-08-29 21:33:40,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 21:33:40,334 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-08-29 21:33:40,337 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 21:33:40,337 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 21:33:40,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:33:40 BasicIcfg [2023-08-29 21:33:40,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 21:33:40,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 21:33:40,346 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 21:33:40,346 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 21:33:40,346 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:33:35" (3/4) ... [2023-08-29 21:33:40,350 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 21:33:40,356 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-29 21:33:40,360 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-08-29 21:33:40,361 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-08-29 21:33:40,361 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-29 21:33:40,362 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-29 21:33:40,362 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 21:33:40,400 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 21:33:40,401 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 21:33:40,401 INFO L158 Benchmark]: Toolchain (without parser) took 5659.78ms. Allocated memory was 69.2MB in the beginning and 107.0MB in the end (delta: 37.7MB). Free memory was 34.5MB in the beginning and 38.7MB in the end (delta: -4.2MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. [2023-08-29 21:33:40,402 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 69.2MB. Free memory is still 46.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:33:40,402 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.47ms. Allocated memory is still 69.2MB. Free memory was 34.2MB in the beginning and 34.1MB in the end (delta: 147.6kB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2023-08-29 21:33:40,402 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.99ms. Allocated memory is still 69.2MB. Free memory was 33.8MB in the beginning and 31.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:33:40,403 INFO L158 Benchmark]: Boogie Preprocessor took 54.95ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 31.8MB in the beginning and 67.3MB in the end (delta: -35.5MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2023-08-29 21:33:40,403 INFO L158 Benchmark]: RCFGBuilder took 417.79ms. Allocated memory is still 88.1MB. Free memory was 67.3MB in the beginning and 53.6MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-29 21:33:40,403 INFO L158 Benchmark]: TraceAbstraction took 4619.63ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 52.6MB in the beginning and 41.2MB in the end (delta: 11.5MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2023-08-29 21:33:40,403 INFO L158 Benchmark]: Witness Printer took 55.57ms. Allocated memory is still 107.0MB. Free memory was 41.2MB in the beginning and 38.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:33:40,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 69.2MB. Free memory is still 46.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 447.47ms. Allocated memory is still 69.2MB. Free memory was 34.2MB in the beginning and 34.1MB in the end (delta: 147.6kB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.99ms. Allocated memory is still 69.2MB. Free memory was 33.8MB in the beginning and 31.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.95ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 31.8MB in the beginning and 67.3MB in the end (delta: -35.5MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * RCFGBuilder took 417.79ms. Allocated memory is still 88.1MB. Free memory was 67.3MB in the beginning and 53.6MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4619.63ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 52.6MB in the beginning and 41.2MB in the end (delta: 11.5MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. * Witness Printer took 55.57ms. Allocated memory is still 107.0MB. Free memory was 41.2MB in the beginning and 38.7MB in the end (delta: 2.5MB). 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: 3.4s, 84 PlacesBefore, 22 PlacesAfterwards, 83 TransitionsBefore, 20 TransitionsAfterwards, 308 CoEnabledTransitionPairs, 7 FixpointIterations, 61 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 80 TotalNumberOfCompositions, 1307 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 544, independent: 400, independent conditional: 0, independent unconditional: 400, dependent: 144, dependent conditional: 0, dependent unconditional: 144, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 171, independent: 150, independent conditional: 0, independent unconditional: 150, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 544, independent: 250, independent conditional: 0, independent unconditional: 250, dependent: 123, dependent conditional: 0, dependent unconditional: 123, unknown: 171, unknown conditional: 0, unknown unconditional: 171] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 15, Positive conditional cache size: 0, Positive unconditional cache size: 15, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, 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: 702]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 98 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 183 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 183 IncrementalHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 11 mSDtfsCounter, 183 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 167 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 21:33:40,443 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