./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.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/28-race_reach_85-list2_racefree.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 da9f6c449f4da806b6a3bb0aaf2c3c9171ea9b71d075f7e8b1d9543f656f7b8b --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 22:05:55,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:05:55,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:05:55,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:05:55,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:05:55,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:05:55,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:05:55,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:05:55,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:05:55,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:05:55,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:05:55,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:05:55,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:05:55,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:05:55,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:05:55,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:05:55,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:05:55,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:05:55,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:05:55,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:05:55,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:05:55,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:05:55,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:05:55,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:05:55,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:05:55,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:05:55,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:05:55,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:05:55,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:05:55,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:05:55,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:05:55,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:05:55,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:05:55,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:05:55,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:05:55,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:05:55,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:05:55,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:05:55,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:05:55,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:05:55,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:05:55,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 22:05:55,302 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:05:55,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:05:55,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:05:55,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:05:55,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:05:55,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:05:55,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:05:55,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:05:55,304 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:05:55,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:05:55,305 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:05:55,305 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:05:55,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:05:55,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:05:55,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:05:55,306 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:05:55,306 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:05:55,306 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:05:55,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:05:55,307 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:05:55,307 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:05:55,307 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:05:55,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:05:55,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:05:55,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:05:55,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:05:55,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:05:55,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:05:55,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 22:05:55,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 22:05:55,309 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:05:55,309 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:05:55,309 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:05:55,310 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:05:55,310 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da9f6c449f4da806b6a3bb0aaf2c3c9171ea9b71d075f7e8b1d9543f656f7b8b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:05:55,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:05:55,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:05:55,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:05:55,561 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:05:55,562 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:05:55,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-08-29 22:05:56,533 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:05:56,760 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:05:56,760 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-08-29 22:05:56,770 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3daf17f62/35c3d53cec6d467494cd144188afcdc0/FLAG2e8b05e26 [2023-08-29 22:05:56,781 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3daf17f62/35c3d53cec6d467494cd144188afcdc0 [2023-08-29 22:05:56,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:05:56,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:05:56,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:05:56,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:05:56,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:05:56,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:05:56" (1/1) ... [2023-08-29 22:05:56,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f0c441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:05:56, skipping insertion in model container [2023-08-29 22:05:56,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:05:56" (1/1) ... [2023-08-29 22:05:56,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:05:56,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:05:57,174 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i[47038,47051] [2023-08-29 22:05:57,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:05:57,226 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 22:05:57,260 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i[47038,47051] [2023-08-29 22:05:57,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:05:57,318 INFO L208 MainTranslator]: Completed translation [2023-08-29 22:05:57,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:05:57 WrapperNode [2023-08-29 22:05:57,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:05:57,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 22:05:57,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 22:05:57,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 22:05:57,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:05:57" (1/1) ... [2023-08-29 22:05:57,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:05:57" (1/1) ... [2023-08-29 22:05:57,359 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 344 [2023-08-29 22:05:57,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 22:05:57,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 22:05:57,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 22:05:57,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 22:05:57,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:05:57" (1/1) ... [2023-08-29 22:05:57,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:05:57" (1/1) ... [2023-08-29 22:05:57,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:05:57" (1/1) ... [2023-08-29 22:05:57,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:05:57" (1/1) ... [2023-08-29 22:05:57,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:05:57" (1/1) ... [2023-08-29 22:05:57,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:05:57" (1/1) ... [2023-08-29 22:05:57,381 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:05:57" (1/1) ... [2023-08-29 22:05:57,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:05:57" (1/1) ... [2023-08-29 22:05:57,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 22:05:57,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 22:05:57,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 22:05:57,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 22:05:57,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:05:57" (1/1) ... [2023-08-29 22:05:57,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:05:57,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:05:57,413 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 22:05:57,424 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 22:05:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 22:05:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 22:05:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-29 22:05:57,439 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-29 22:05:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 22:05:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 22:05:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-29 22:05:57,440 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-29 22:05:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 22:05:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 22:05:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 22:05:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 22:05:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 22:05:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-29 22:05:57,441 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-29 22:05:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 22:05:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 22:05:57,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 22:05:57,442 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 22:05:57,616 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 22:05:57,617 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 22:05:58,046 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 22:05:58,058 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 22:05:58,059 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-08-29 22:05:58,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:05:58 BoogieIcfgContainer [2023-08-29 22:05:58,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 22:05:58,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 22:05:58,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 22:05:58,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 22:05:58,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:05:56" (1/3) ... [2023-08-29 22:05:58,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59af7c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:05:58, skipping insertion in model container [2023-08-29 22:05:58,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:05:57" (2/3) ... [2023-08-29 22:05:58,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59af7c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:05:58, skipping insertion in model container [2023-08-29 22:05:58,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:05:58" (3/3) ... [2023-08-29 22:05:58,068 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_85-list2_racefree.i [2023-08-29 22:05:58,079 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 22:05:58,079 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2023-08-29 22:05:58,079 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 22:05:58,195 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-29 22:05:58,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 412 transitions, 866 flow [2023-08-29 22:05:58,472 INFO L130 PetriNetUnfolder]: 164/1274 cut-off events. [2023-08-29 22:05:58,472 INFO L131 PetriNetUnfolder]: For 36/61 co-relation queries the response was YES. [2023-08-29 22:05:58,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 1274 events. 164/1274 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 8885 event pairs, 0 based on Foata normal form. 0/912 useless extension candidates. Maximal degree in co-relation 658. Up to 16 conditions per place. [2023-08-29 22:05:58,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 374 places, 412 transitions, 866 flow [2023-08-29 22:05:58,506 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 412 transitions, 866 flow [2023-08-29 22:05:58,508 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 22:05:58,517 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 412 transitions, 866 flow [2023-08-29 22:05:58,520 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 412 transitions, 866 flow [2023-08-29 22:05:58,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 412 transitions, 866 flow [2023-08-29 22:05:58,667 INFO L130 PetriNetUnfolder]: 164/1274 cut-off events. [2023-08-29 22:05:58,667 INFO L131 PetriNetUnfolder]: For 36/61 co-relation queries the response was YES. [2023-08-29 22:05:58,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 1274 events. 164/1274 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 8885 event pairs, 0 based on Foata normal form. 0/912 useless extension candidates. Maximal degree in co-relation 658. Up to 16 conditions per place. [2023-08-29 22:05:58,725 INFO L119 LiptonReduction]: Number of co-enabled transitions 73218 [2023-08-29 22:06:16,129 INFO L134 LiptonReduction]: Checked pairs total: 203082 [2023-08-29 22:06:16,129 INFO L136 LiptonReduction]: Total number of compositions: 362 [2023-08-29 22:06:16,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 22:06:16,145 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;@7058b1f0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 22:06:16,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 101 error locations. [2023-08-29 22:06:16,146 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 22:06:16,146 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:06:16,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:06:16,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 22:06:16,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t3_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-08-29 22:06:16,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:06:16,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1620, now seen corresponding path program 1 times [2023-08-29 22:06:16,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:06:16,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80057369] [2023-08-29 22:06:16,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:06:16,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:06:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:06:16,240 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 22:06:16,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:06:16,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80057369] [2023-08-29 22:06:16,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80057369] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:06:16,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:06:16,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 22:06:16,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114137894] [2023-08-29 22:06:16,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:06:16,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 22:06:16,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:06:16,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 22:06:16,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 22:06:16,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 774 [2023-08-29 22:06:16,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 176 transitions, 394 flow. Second operand has 2 states, 2 states have (on average 368.5) internal successors, (737), 2 states have internal predecessors, (737), 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 22:06:16,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:06:16,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 774 [2023-08-29 22:06:16,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:07:10,808 INFO L130 PetriNetUnfolder]: 673122/1009369 cut-off events. [2023-08-29 22:07:10,808 INFO L131 PetriNetUnfolder]: For 8904/8904 co-relation queries the response was YES. [2023-08-29 22:07:12,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1908639 conditions, 1009369 events. 673122/1009369 cut-off events. For 8904/8904 co-relation queries the response was YES. Maximal size of possible extension queue 24696. Compared 9853778 event pairs, 632691 based on Foata normal form. 44122/585283 useless extension candidates. Maximal degree in co-relation 1791222. Up to 894018 conditions per place. [2023-08-29 22:07:15,897 INFO L137 encePairwiseOnDemand]: 743/774 looper letters, 111 selfloop transitions, 0 changer transitions 0/145 dead transitions. [2023-08-29 22:07:15,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 145 transitions, 554 flow [2023-08-29 22:07:15,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 22:07:15,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 22:07:15,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 878 transitions. [2023-08-29 22:07:15,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5671834625322998 [2023-08-29 22:07:15,909 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 878 transitions. [2023-08-29 22:07:15,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 878 transitions. [2023-08-29 22:07:15,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:07:15,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 878 transitions. [2023-08-29 22:07:15,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 439.0) internal successors, (878), 2 states have internal predecessors, (878), 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 22:07:15,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 774.0) internal successors, (2322), 3 states have internal predecessors, (2322), 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 22:07:15,921 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 774.0) internal successors, (2322), 3 states have internal predecessors, (2322), 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 22:07:15,922 INFO L175 Difference]: Start difference. First operand has 147 places, 176 transitions, 394 flow. Second operand 2 states and 878 transitions. [2023-08-29 22:07:15,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 145 transitions, 554 flow [2023-08-29 22:07:16,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 145 transitions, 554 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:07:16,218 INFO L231 Difference]: Finished difference. Result has 140 places, 145 transitions, 332 flow [2023-08-29 22:07:16,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=332, PETRI_PLACES=140, PETRI_TRANSITIONS=145} [2023-08-29 22:07:16,221 INFO L281 CegarLoopForPetriNet]: 147 programPoint places, -7 predicate places. [2023-08-29 22:07:16,221 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 145 transitions, 332 flow [2023-08-29 22:07:16,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 368.5) internal successors, (737), 2 states have internal predecessors, (737), 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 22:07:16,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:07:16,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:07:16,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 22:07:16,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t3_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-08-29 22:07:16,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:07:16,223 INFO L85 PathProgramCache]: Analyzing trace with hash 51956, now seen corresponding path program 1 times [2023-08-29 22:07:16,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:07:16,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182781250] [2023-08-29 22:07:16,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:07:16,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:07:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:07:16,403 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 22:07:16,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:07:16,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182781250] [2023-08-29 22:07:16,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182781250] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:07:16,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:07:16,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:07:16,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023277504] [2023-08-29 22:07:16,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:07:16,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:07:16,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:07:16,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:07:16,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:07:16,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 358 out of 774 [2023-08-29 22:07:16,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 145 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 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 22:07:16,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:07:16,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 358 of 774 [2023-08-29 22:07:16,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:08:05,892 INFO L130 PetriNetUnfolder]: 639509/940368 cut-off events. [2023-08-29 22:08:05,893 INFO L131 PetriNetUnfolder]: For 8904/8904 co-relation queries the response was YES. [2023-08-29 22:08:07,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1801241 conditions, 940368 events. 639509/940368 cut-off events. For 8904/8904 co-relation queries the response was YES. Maximal size of possible extension queue 23137. Compared 8917220 event pairs, 440423 based on Foata normal form. 0/510942 useless extension candidates. Maximal degree in co-relation 1801235. Up to 625399 conditions per place. [2023-08-29 22:08:10,769 INFO L137 encePairwiseOnDemand]: 770/774 looper letters, 170 selfloop transitions, 2 changer transitions 0/206 dead transitions. [2023-08-29 22:08:10,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 206 transitions, 798 flow [2023-08-29 22:08:10,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:08:10,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:08:10,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1248 transitions. [2023-08-29 22:08:10,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.537467700258398 [2023-08-29 22:08:10,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1248 transitions. [2023-08-29 22:08:10,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1248 transitions. [2023-08-29 22:08:10,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:08:10,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1248 transitions. [2023-08-29 22:08:10,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 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 22:08:10,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 774.0) internal successors, (3096), 4 states have internal predecessors, (3096), 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 22:08:10,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 774.0) internal successors, (3096), 4 states have internal predecessors, (3096), 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 22:08:10,779 INFO L175 Difference]: Start difference. First operand has 140 places, 145 transitions, 332 flow. Second operand 3 states and 1248 transitions. [2023-08-29 22:08:10,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 206 transitions, 798 flow [2023-08-29 22:08:10,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 206 transitions, 798 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:08:10,913 INFO L231 Difference]: Finished difference. Result has 140 places, 143 transitions, 332 flow [2023-08-29 22:08:10,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=140, PETRI_TRANSITIONS=143} [2023-08-29 22:08:10,913 INFO L281 CegarLoopForPetriNet]: 147 programPoint places, -7 predicate places. [2023-08-29 22:08:10,914 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 143 transitions, 332 flow [2023-08-29 22:08:10,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 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 22:08:10,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:08:10,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:08:10,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 22:08:10,915 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t3_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-08-29 22:08:10,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:08:10,915 INFO L85 PathProgramCache]: Analyzing trace with hash 51955, now seen corresponding path program 1 times [2023-08-29 22:08:10,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:08:10,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991176354] [2023-08-29 22:08:10,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:08:10,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:08:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:08:11,000 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 22:08:11,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:08:11,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991176354] [2023-08-29 22:08:11,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991176354] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:08:11,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:08:11,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:08:11,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755916568] [2023-08-29 22:08:11,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:08:11,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:08:11,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:08:11,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:08:11,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:08:11,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 360 out of 774 [2023-08-29 22:08:11,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 143 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 360.6666666666667) internal successors, (1082), 3 states have internal predecessors, (1082), 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 22:08:11,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:08:11,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 360 of 774 [2023-08-29 22:08:11,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand