./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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_09-ptrmunge_racing.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 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 04:05:53,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 04:05:53,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 04:05:53,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 04:05:53,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 04:05:53,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 04:05:53,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 04:05:53,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 04:05:53,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 04:05:53,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 04:05:53,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 04:05:53,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 04:05:53,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 04:05:53,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 04:05:53,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 04:05:53,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 04:05:53,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 04:05:53,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 04:05:53,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 04:05:53,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 04:05:53,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 04:05:53,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 04:05:53,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 04:05:53,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 04:05:53,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 04:05:53,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 04:05:53,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 04:05:53,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 04:05:53,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 04:05:53,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 04:05:53,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 04:05:53,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 04:05:53,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 04:05:53,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 04:05:53,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 04:05:53,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 04:05:53,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 04:05:53,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 04:05:53,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 04:05:53,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 04:05:53,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 04:05:53,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 04:05:53,635 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 04:05:53,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 04:05:53,636 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 04:05:53,636 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 04:05:53,637 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 04:05:53,637 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 04:05:53,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 04:05:53,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 04:05:53,639 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 04:05:53,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 04:05:53,640 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 04:05:53,640 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 04:05:53,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 04:05:53,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 04:05:53,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 04:05:53,641 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 04:05:53,641 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 04:05:53,641 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 04:05:53,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 04:05:53,642 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 04:05:53,642 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 04:05:53,642 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 04:05:53,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 04:05:53,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 04:05:53,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 04:05:53,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:05:53,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 04:05:53,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 04:05:53,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 04:05:53,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 04:05:53,644 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 04:05:53,644 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 04:05:53,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 04:05:53,645 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 04:05:53,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 04:05:53,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 04:05:53,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 04:05:53,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 04:05:53,974 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 04:05:53,975 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 04:05:53,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-08-30 04:05:55,182 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 04:05:55,482 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 04:05:55,483 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-08-30 04:05:55,499 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6beecd646/b3b76e5cd44c40969e803bf673acc811/FLAG01fb0d26b [2023-08-30 04:05:55,511 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6beecd646/b3b76e5cd44c40969e803bf673acc811 [2023-08-30 04:05:55,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 04:05:55,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 04:05:55,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 04:05:55,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 04:05:55,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 04:05:55,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:05:55" (1/1) ... [2023-08-30 04:05:55,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c29ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:05:55, skipping insertion in model container [2023-08-30 04:05:55,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:05:55" (1/1) ... [2023-08-30 04:05:55,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 04:05:55,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:05:55,892 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_09-ptrmunge_racing.i[30176,30189] [2023-08-30 04:05:55,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:05:55,940 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 04:05:55,976 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_09-ptrmunge_racing.i[30176,30189] [2023-08-30 04:05:55,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:05:56,025 INFO L208 MainTranslator]: Completed translation [2023-08-30 04:05:56,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:05:56 WrapperNode [2023-08-30 04:05:56,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 04:05:56,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 04:05:56,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 04:05:56,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 04:05:56,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:05:56" (1/1) ... [2023-08-30 04:05:56,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:05:56" (1/1) ... [2023-08-30 04:05:56,072 INFO L138 Inliner]: procedures = 172, calls = 50, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 218 [2023-08-30 04:05:56,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 04:05:56,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 04:05:56,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 04:05:56,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 04:05:56,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:05:56" (1/1) ... [2023-08-30 04:05:56,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:05:56" (1/1) ... [2023-08-30 04:05:56,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:05:56" (1/1) ... [2023-08-30 04:05:56,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:05:56" (1/1) ... [2023-08-30 04:05:56,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:05:56" (1/1) ... [2023-08-30 04:05:56,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:05:56" (1/1) ... [2023-08-30 04:05:56,102 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:05:56" (1/1) ... [2023-08-30 04:05:56,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:05:56" (1/1) ... [2023-08-30 04:05:56,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 04:05:56,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 04:05:56,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 04:05:56,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 04:05:56,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:05:56" (1/1) ... [2023-08-30 04:05:56,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:05:56,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:05:56,150 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) [2023-08-30 04:05:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 04:05:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-30 04:05:56,194 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-30 04:05:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 04:05:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 04:05:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 04:05:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 04:05:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-30 04:05:56,195 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-30 04:05:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 04:05:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 04:05:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 04:05:56,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 04:05:56,197 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 04:05:56,183 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 [2023-08-30 04:05:56,384 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 04:05:56,386 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 04:05:56,808 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 04:05:56,817 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 04:05:56,818 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-30 04:05:56,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:05:56 BoogieIcfgContainer [2023-08-30 04:05:56,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 04:05:56,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 04:05:56,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 04:05:56,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 04:05:56,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:05:55" (1/3) ... [2023-08-30 04:05:56,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f962628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:05:56, skipping insertion in model container [2023-08-30 04:05:56,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:05:56" (2/3) ... [2023-08-30 04:05:56,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f962628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:05:56, skipping insertion in model container [2023-08-30 04:05:56,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:05:56" (3/3) ... [2023-08-30 04:05:56,828 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_09-ptrmunge_racing.i [2023-08-30 04:05:56,845 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 04:05:56,845 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-08-30 04:05:56,846 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 04:05:57,014 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 04:05:57,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 247 transitions, 516 flow [2023-08-30 04:05:57,245 INFO L130 PetriNetUnfolder]: 58/451 cut-off events. [2023-08-30 04:05:57,246 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-08-30 04:05:57,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 451 events. 58/451 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2216 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2023-08-30 04:05:57,259 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 247 transitions, 516 flow [2023-08-30 04:05:57,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 247 transitions, 516 flow [2023-08-30 04:05:57,274 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 04:05:57,286 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 247 transitions, 516 flow [2023-08-30 04:05:57,290 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 247 transitions, 516 flow [2023-08-30 04:05:57,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 247 transitions, 516 flow [2023-08-30 04:05:57,370 INFO L130 PetriNetUnfolder]: 58/451 cut-off events. [2023-08-30 04:05:57,371 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-08-30 04:05:57,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 451 events. 58/451 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2216 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2023-08-30 04:05:57,393 INFO L119 LiptonReduction]: Number of co-enabled transitions 26128 [2023-08-30 04:06:02,461 INFO L134 LiptonReduction]: Checked pairs total: 65338 [2023-08-30 04:06:02,461 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-08-30 04:06:02,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 04:06:02,479 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;@3bf0cbfc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 04:06:02,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2023-08-30 04:06:02,481 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 04:06:02,482 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:06:02,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:06:02,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 04:06:02,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-08-30 04:06:02,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:06:02,487 INFO L85 PathProgramCache]: Analyzing trace with hash 31695, now seen corresponding path program 1 times [2023-08-30 04:06:02,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:06:02,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524391513] [2023-08-30 04:06:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:06:02,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:06:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:06:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:06:02,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:06:02,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524391513] [2023-08-30 04:06:02,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524391513] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:06:02,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:06:02,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:06:02,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328413746] [2023-08-30 04:06:02,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:06:02,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:06:02,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:06:02,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:06:02,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:06:02,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 446 [2023-08-30 04:06:02,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 109 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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) [2023-08-30 04:06:02,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:06:02,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 446 [2023-08-30 04:06:02,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:06:04,821 INFO L130 PetriNetUnfolder]: 12861/21606 cut-off events. [2023-08-30 04:06:04,822 INFO L131 PetriNetUnfolder]: For 165/165 co-relation queries the response was YES. [2023-08-30 04:06:04,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41193 conditions, 21606 events. 12861/21606 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 1251. Compared 180669 event pairs, 9752 based on Foata normal form. 1969/13751 useless extension candidates. Maximal degree in co-relation 39531. Up to 15528 conditions per place. [2023-08-30 04:06:04,972 INFO L137 encePairwiseOnDemand]: 420/446 looper letters, 103 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2023-08-30 04:06:04,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 124 transitions, 480 flow [2023-08-30 04:06:04,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:06:04,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:06:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 763 transitions. [2023-08-30 04:06:04,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.570254110612855 [2023-08-30 04:06:04,987 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 763 transitions. [2023-08-30 04:06:04,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 763 transitions. [2023-08-30 04:06:04,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:06:04,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 763 transitions. [2023-08-30 04:06:04,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 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) [2023-08-30 04:06:05,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 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) [2023-08-30 04:06:05,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 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) [2023-08-30 04:06:05,008 INFO L175 Difference]: Start difference. First operand has 88 places, 109 transitions, 240 flow. Second operand 3 states and 763 transitions. [2023-08-30 04:06:05,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 124 transitions, 480 flow [2023-08-30 04:06:05,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 124 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:06:05,018 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 196 flow [2023-08-30 04:06:05,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2023-08-30 04:06:05,023 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -2 predicate places. [2023-08-30 04:06:05,023 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 196 flow [2023-08-30 04:06:05,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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) [2023-08-30 04:06:05,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:06:05,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 04:06:05,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 04:06:05,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-08-30 04:06:05,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:06:05,026 INFO L85 PathProgramCache]: Analyzing trace with hash 31696, now seen corresponding path program 1 times [2023-08-30 04:06:05,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:06:05,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637102047] [2023-08-30 04:06:05,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:06:05,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:06:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:06:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:06:05,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:06:05,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637102047] [2023-08-30 04:06:05,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637102047] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:06:05,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:06:05,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:06:05,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781441350] [2023-08-30 04:06:05,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:06:05,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:06:05,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:06:05,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:06:05,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:06:05,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 446 [2023-08-30 04:06:05,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 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) [2023-08-30 04:06:05,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:06:05,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 446 [2023-08-30 04:06:05,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:06:06,760 INFO L130 PetriNetUnfolder]: 12820/21608 cut-off events. [2023-08-30 04:06:06,760 INFO L131 PetriNetUnfolder]: For 564/564 co-relation queries the response was YES. [2023-08-30 04:06:06,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41449 conditions, 21608 events. 12820/21608 cut-off events. For 564/564 co-relation queries the response was YES. Maximal size of possible extension queue 1175. Compared 179158 event pairs, 11168 based on Foata normal form. 0/12266 useless extension candidates. Maximal degree in co-relation 40228. Up to 19195 conditions per place. [2023-08-30 04:06:06,898 INFO L137 encePairwiseOnDemand]: 442/446 looper letters, 84 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-08-30 04:06:06,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 105 transitions, 408 flow [2023-08-30 04:06:06,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:06:06,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:06:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 712 transitions. [2023-08-30 04:06:06,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321375186846039 [2023-08-30 04:06:06,902 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 712 transitions. [2023-08-30 04:06:06,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 712 transitions. [2023-08-30 04:06:06,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:06:06,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 712 transitions. [2023-08-30 04:06:06,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2023-08-30 04:06:06,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 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) [2023-08-30 04:06:06,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 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) [2023-08-30 04:06:06,911 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 196 flow. Second operand 3 states and 712 transitions. [2023-08-30 04:06:06,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 105 transitions, 408 flow [2023-08-30 04:06:06,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 105 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:06:06,927 INFO L231 Difference]: Finished difference. Result has 87 places, 85 transitions, 202 flow [2023-08-30 04:06:06,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=87, PETRI_TRANSITIONS=85} [2023-08-30 04:06:06,929 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -1 predicate places. [2023-08-30 04:06:06,929 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 85 transitions, 202 flow [2023-08-30 04:06:06,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 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) [2023-08-30 04:06:06,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:06:06,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:06:06,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 04:06:06,931 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-08-30 04:06:06,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:06:06,934 INFO L85 PathProgramCache]: Analyzing trace with hash 944955220, now seen corresponding path program 1 times [2023-08-30 04:06:06,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:06:06,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309692875] [2023-08-30 04:06:06,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:06:06,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:06:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:06:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:06:07,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:06:07,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309692875] [2023-08-30 04:06:07,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309692875] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:06:07,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740794926] [2023-08-30 04:06:07,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:06:07,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:06:07,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:06:07,097 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 04:06:07,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 04:06:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:06:07,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 04:06:07,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:06:07,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 04:06:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:06:07,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:06:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:06:07,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740794926] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:06:07,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 04:06:07,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-08-30 04:06:07,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518268692] [2023-08-30 04:06:07,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 04:06:07,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 04:06:07,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:06:07,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 04:06:07,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-30 04:06:07,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 446 [2023-08-30 04:06:07,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 202 flow. Second operand has 8 states, 8 states have (on average 204.875) internal successors, (1639), 8 states have internal predecessors, (1639), 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) [2023-08-30 04:06:07,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:06:07,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 446 [2023-08-30 04:06:07,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:06:07,751 INFO L130 PetriNetUnfolder]: 41/126 cut-off events. [2023-08-30 04:06:07,751 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-08-30 04:06:07,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 126 events. 41/126 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 474 event pairs, 16 based on Foata normal form. 20/113 useless extension candidates. Maximal degree in co-relation 276. Up to 78 conditions per place. [2023-08-30 04:06:07,752 INFO L137 encePairwiseOnDemand]: 442/446 looper letters, 41 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-30 04:06:07,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 203 flow [2023-08-30 04:06:07,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:06:07,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:06:07,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 857 transitions. [2023-08-30 04:06:07,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48038116591928254 [2023-08-30 04:06:07,756 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 857 transitions. [2023-08-30 04:06:07,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 857 transitions. [2023-08-30 04:06:07,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:06:07,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 857 transitions. [2023-08-30 04:06:07,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 214.25) internal successors, (857), 4 states have internal predecessors, (857), 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) [2023-08-30 04:06:07,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 446.0) internal successors, (2230), 5 states have internal predecessors, (2230), 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) [2023-08-30 04:06:07,762 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 446.0) internal successors, (2230), 5 states have internal predecessors, (2230), 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) [2023-08-30 04:06:07,763 INFO L175 Difference]: Start difference. First operand has 87 places, 85 transitions, 202 flow. Second operand 4 states and 857 transitions. [2023-08-30 04:06:07,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 203 flow [2023-08-30 04:06:07,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 197 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 04:06:07,764 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 75 flow [2023-08-30 04:06:07,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-08-30 04:06:07,765 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -49 predicate places. [2023-08-30 04:06:07,766 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 75 flow [2023-08-30 04:06:07,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 204.875) internal successors, (1639), 8 states have internal predecessors, (1639), 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) [2023-08-30 04:06:07,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:06:07,771 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 04:06:07,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 04:06:07,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:06:07,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-08-30 04:06:07,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:06:07,977 INFO L85 PathProgramCache]: Analyzing trace with hash -771158556, now seen corresponding path program 1 times [2023-08-30 04:06:07,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:06:07,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458994339] [2023-08-30 04:06:07,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:06:07,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:06:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 04:06:08,000 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 04:06:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 04:06:08,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 04:06:08,036 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 04:06:08,037 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (54 of 55 remaining) [2023-08-30 04:06:08,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 55 remaining) [2023-08-30 04:06:08,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 55 remaining) [2023-08-30 04:06:08,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 55 remaining) [2023-08-30 04:06:08,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 55 remaining) [2023-08-30 04:06:08,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 55 remaining) [2023-08-30 04:06:08,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 55 remaining) [2023-08-30 04:06:08,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 55 remaining) [2023-08-30 04:06:08,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 55 remaining) [2023-08-30 04:06:08,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 55 remaining) [2023-08-30 04:06:08,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 55 remaining) [2023-08-30 04:06:08,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10ASSERT_VIOLATIONMEMORY_LEAK (43 of 55 remaining) [2023-08-30 04:06:08,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 55 remaining) [2023-08-30 04:06:08,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 55 remaining) [2023-08-30 04:06:08,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 55 remaining) [2023-08-30 04:06:08,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 55 remaining) [2023-08-30 04:06:08,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 55 remaining) [2023-08-30 04:06:08,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 55 remaining) [2023-08-30 04:06:08,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 55 remaining) [2023-08-30 04:06:08,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 55 remaining) [2023-08-30 04:06:08,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (34 of 55 remaining) [2023-08-30 04:06:08,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 55 remaining) [2023-08-30 04:06:08,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 55 remaining) [2023-08-30 04:06:08,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 55 remaining) [2023-08-30 04:06:08,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 55 remaining) [2023-08-30 04:06:08,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 55 remaining) [2023-08-30 04:06:08,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 55 remaining) [2023-08-30 04:06:08,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 55 remaining) [2023-08-30 04:06:08,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 55 remaining) [2023-08-30 04:06:08,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 55 remaining) [2023-08-30 04:06:08,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 55 remaining) [2023-08-30 04:06:08,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 55 remaining) [2023-08-30 04:06:08,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr10ASSERT_VIOLATIONMEMORY_LEAK (22 of 55 remaining) [2023-08-30 04:06:08,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 55 remaining) [2023-08-30 04:06:08,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 55 remaining) [2023-08-30 04:06:08,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 55 remaining) [2023-08-30 04:06:08,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 55 remaining) [2023-08-30 04:06:08,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 55 remaining) [2023-08-30 04:06:08,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 55 remaining) [2023-08-30 04:06:08,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 55 remaining) [2023-08-30 04:06:08,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 55 remaining) [2023-08-30 04:06:08,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 55 remaining) [2023-08-30 04:06:08,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 55 remaining) [2023-08-30 04:06:08,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10ASSERT_VIOLATIONMEMORY_LEAK (11 of 55 remaining) [2023-08-30 04:06:08,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 55 remaining) [2023-08-30 04:06:08,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 55 remaining) [2023-08-30 04:06:08,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 55 remaining) [2023-08-30 04:06:08,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 55 remaining) [2023-08-30 04:06:08,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 55 remaining) [2023-08-30 04:06:08,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 55 remaining) [2023-08-30 04:06:08,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 55 remaining) [2023-08-30 04:06:08,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 55 remaining) [2023-08-30 04:06:08,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 55 remaining) [2023-08-30 04:06:08,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 55 remaining) [2023-08-30 04:06:08,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 55 remaining) [2023-08-30 04:06:08,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 04:06:08,065 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-30 04:06:08,067 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 04:06:08,067 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 04:06:08,139 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-30 04:06:08,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 395 transitions, 838 flow [2023-08-30 04:06:08,475 INFO L130 PetriNetUnfolder]: 197/1320 cut-off events. [2023-08-30 04:06:08,476 INFO L131 PetriNetUnfolder]: For 72/81 co-relation queries the response was YES. [2023-08-30 04:06:08,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1417 conditions, 1320 events. 197/1320 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8775 event pairs, 1 based on Foata normal form. 0/944 useless extension candidates. Maximal degree in co-relation 794. Up to 32 conditions per place. [2023-08-30 04:06:08,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 395 transitions, 838 flow [2023-08-30 04:06:08,532 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 344 places, 395 transitions, 838 flow [2023-08-30 04:06:08,532 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 04:06:08,532 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 344 places, 395 transitions, 838 flow [2023-08-30 04:06:08,533 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 344 places, 395 transitions, 838 flow [2023-08-30 04:06:08,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 395 transitions, 838 flow [2023-08-30 04:06:08,776 INFO L130 PetriNetUnfolder]: 197/1320 cut-off events. [2023-08-30 04:06:08,776 INFO L131 PetriNetUnfolder]: For 72/81 co-relation queries the response was YES. [2023-08-30 04:06:08,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1417 conditions, 1320 events. 197/1320 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8775 event pairs, 1 based on Foata normal form. 0/944 useless extension candidates. Maximal degree in co-relation 794. Up to 32 conditions per place. [2023-08-30 04:06:08,890 INFO L119 LiptonReduction]: Number of co-enabled transitions 95424 [2023-08-30 04:06:15,197 INFO L134 LiptonReduction]: Checked pairs total: 272387 [2023-08-30 04:06:15,197 INFO L136 LiptonReduction]: Total number of compositions: 302 [2023-08-30 04:06:15,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 04:06:15,200 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;@3bf0cbfc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 04:06:15,200 INFO L358 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2023-08-30 04:06:15,201 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 04:06:15,201 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:06:15,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:06:15,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 04:06:15,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-08-30 04:06:15,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:06:15,202 INFO L85 PathProgramCache]: Analyzing trace with hash 58644, now seen corresponding path program 1 times [2023-08-30 04:06:15,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:06:15,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755036202] [2023-08-30 04:06:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:06:15,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:06:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:06:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:06:15,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:06:15,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755036202] [2023-08-30 04:06:15,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755036202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:06:15,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:06:15,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:06:15,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084665063] [2023-08-30 04:06:15,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:06:15,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:06:15,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:06:15,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:06:15,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:06:15,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 697 [2023-08-30 04:06:15,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 195 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 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) [2023-08-30 04:06:15,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:06:15,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 697 [2023-08-30 04:06:15,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand