./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_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_81-list_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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --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 04:18:48,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 04:18:48,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 04:18:48,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 04:18:48,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 04:18:48,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 04:18:48,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 04:18:48,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 04:18:48,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 04:18:48,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 04:18:48,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 04:18:48,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 04:18:48,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 04:18:48,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 04:18:48,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 04:18:48,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 04:18:48,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 04:18:48,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 04:18:48,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 04:18:48,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 04:18:48,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 04:18:48,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 04:18:48,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 04:18:48,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 04:18:48,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 04:18:48,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 04:18:48,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 04:18:48,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 04:18:48,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 04:18:48,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 04:18:48,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 04:18:48,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 04:18:48,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 04:18:48,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 04:18:48,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 04:18:48,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 04:18:48,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 04:18:48,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 04:18:48,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 04:18:48,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 04:18:48,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 04:18:48,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 04:18:48,869 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 04:18:48,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 04:18:48,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 04:18:48,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 04:18:48,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 04:18:48,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 04:18:48,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 04:18:48,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 04:18:48,872 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 04:18:48,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 04:18:48,872 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 04:18:48,873 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 04:18:48,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 04:18:48,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 04:18:48,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 04:18:48,873 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 04:18:48,874 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 04:18:48,874 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 04:18:48,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 04:18:48,874 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 04:18:48,874 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 04:18:48,874 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 04:18:48,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 04:18:48,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 04:18:48,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 04:18:48,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:18:48,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 04:18:48,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 04:18:48,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 04:18:48,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 04:18:48,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 04:18:48,876 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 04:18:48,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 04:18:48,877 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 04:18:48,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 04:18:49,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 04:18:49,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 04:18:49,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 04:18:49,136 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 04:18:49,137 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 04:18:49,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-08-30 04:18:50,143 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 04:18:50,347 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 04:18:50,350 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2023-08-30 04:18:50,366 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68407cbe0/0cf14f26b96846d99fa3650f0b9d9a74/FLAG5bd9afef7 [2023-08-30 04:18:50,387 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68407cbe0/0cf14f26b96846d99fa3650f0b9d9a74 [2023-08-30 04:18:50,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 04:18:50,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 04:18:50,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 04:18:50,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 04:18:50,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 04:18:50,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:18:50" (1/1) ... [2023-08-30 04:18:50,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237f9964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:18:50, skipping insertion in model container [2023-08-30 04:18:50,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:18:50" (1/1) ... [2023-08-30 04:18:50,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 04:18:50,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:18:50,742 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_81-list_racing.i[47038,47051] [2023-08-30 04:18:50,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:18:50,793 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 04:18:50,824 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_81-list_racing.i[47038,47051] [2023-08-30 04:18:50,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:18:50,874 INFO L208 MainTranslator]: Completed translation [2023-08-30 04:18:50,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:18:50 WrapperNode [2023-08-30 04:18:50,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 04:18:50,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 04:18:50,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 04:18:50,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 04:18:50,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:18:50" (1/1) ... [2023-08-30 04:18:50,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:18:50" (1/1) ... [2023-08-30 04:18:50,914 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 206 [2023-08-30 04:18:50,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 04:18:50,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 04:18:50,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 04:18:50,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 04:18:50,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:18:50" (1/1) ... [2023-08-30 04:18:50,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:18:50" (1/1) ... [2023-08-30 04:18:50,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:18:50" (1/1) ... [2023-08-30 04:18:50,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:18:50" (1/1) ... [2023-08-30 04:18:50,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:18:50" (1/1) ... [2023-08-30 04:18:50,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:18:50" (1/1) ... [2023-08-30 04:18:50,938 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:18:50" (1/1) ... [2023-08-30 04:18:50,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:18:50" (1/1) ... [2023-08-30 04:18:50,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 04:18:50,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 04:18:50,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 04:18:50,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 04:18:50,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:18:50" (1/1) ... [2023-08-30 04:18:50,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:18:50,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:18:50,964 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 04:18:50,998 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 04:18:51,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 04:18:51,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 04:18:51,007 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-30 04:18:51,007 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-30 04:18:51,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 04:18:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 04:18:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-30 04:18:51,008 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-30 04:18:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 04:18:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 04:18:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 04:18:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 04:18:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 04:18:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 04:18:51,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 04:18:51,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 04:18:51,010 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 04:18:51,131 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 04:18:51,136 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 04:18:51,504 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 04:18:51,513 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 04:18:51,514 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-08-30 04:18:51,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:18:51 BoogieIcfgContainer [2023-08-30 04:18:51,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 04:18:51,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 04:18:51,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 04:18:51,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 04:18:51,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:18:50" (1/3) ... [2023-08-30 04:18:51,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8062e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:18:51, skipping insertion in model container [2023-08-30 04:18:51,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:18:50" (2/3) ... [2023-08-30 04:18:51,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8062e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:18:51, skipping insertion in model container [2023-08-30 04:18:51,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:18:51" (3/3) ... [2023-08-30 04:18:51,522 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-08-30 04:18:51,535 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 04:18:51,535 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2023-08-30 04:18:51,535 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 04:18:51,628 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 04:18:51,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 249 transitions, 520 flow [2023-08-30 04:18:51,772 INFO L130 PetriNetUnfolder]: 52/481 cut-off events. [2023-08-30 04:18:51,772 INFO L131 PetriNetUnfolder]: For 8/15 co-relation queries the response was YES. [2023-08-30 04:18:51,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 481 events. 52/481 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2230 event pairs, 0 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 244. Up to 8 conditions per place. [2023-08-30 04:18:51,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 249 transitions, 520 flow [2023-08-30 04:18:51,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 249 transitions, 520 flow [2023-08-30 04:18:51,797 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 04:18:51,802 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 249 transitions, 520 flow [2023-08-30 04:18:51,804 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 249 transitions, 520 flow [2023-08-30 04:18:51,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 249 transitions, 520 flow [2023-08-30 04:18:51,871 INFO L130 PetriNetUnfolder]: 52/481 cut-off events. [2023-08-30 04:18:51,871 INFO L131 PetriNetUnfolder]: For 8/15 co-relation queries the response was YES. [2023-08-30 04:18:51,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 481 events. 52/481 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2230 event pairs, 0 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 244. Up to 8 conditions per place. [2023-08-30 04:18:51,883 INFO L119 LiptonReduction]: Number of co-enabled transitions 20328 [2023-08-30 04:18:57,983 INFO L134 LiptonReduction]: Checked pairs total: 61398 [2023-08-30 04:18:57,984 INFO L136 LiptonReduction]: Total number of compositions: 203 [2023-08-30 04:18:58,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 04:18:58,008 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;@4ff7cc8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 04:18:58,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2023-08-30 04:18:58,011 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 04:18:58,011 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:18:58,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:18:58,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 04:18:58,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-08-30 04:18:58,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:18:58,021 INFO L85 PathProgramCache]: Analyzing trace with hash 962, now seen corresponding path program 1 times [2023-08-30 04:18:58,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:18:58,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922128099] [2023-08-30 04:18:58,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:18:58,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:18:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:18:58,114 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 04:18:58,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:18:58,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922128099] [2023-08-30 04:18:58,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922128099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:18:58,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:18:58,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 04:18:58,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317689545] [2023-08-30 04:18:58,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:18:58,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 04:18:58,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:18:58,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 04:18:58,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 04:18:58,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 452 [2023-08-30 04:18:58,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 228 flow. Second operand has 2 states, 2 states have (on average 226.5) internal successors, (453), 2 states have internal predecessors, (453), 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 04:18:58,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:18:58,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 452 [2023-08-30 04:18:58,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:18:59,003 INFO L130 PetriNetUnfolder]: 6848/13016 cut-off events. [2023-08-30 04:18:59,004 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2023-08-30 04:18:59,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23748 conditions, 13016 events. 6848/13016 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 107405 event pairs, 6456 based on Foata normal form. 648/8158 useless extension candidates. Maximal degree in co-relation 21691. Up to 10632 conditions per place. [2023-08-30 04:18:59,073 INFO L137 encePairwiseOnDemand]: 437/452 looper letters, 60 selfloop transitions, 0 changer transitions 0/88 dead transitions. [2023-08-30 04:18:59,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 88 transitions, 318 flow [2023-08-30 04:18:59,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 04:18:59,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 04:18:59,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 527 transitions. [2023-08-30 04:18:59,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5829646017699115 [2023-08-30 04:18:59,085 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 527 transitions. [2023-08-30 04:18:59,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 527 transitions. [2023-08-30 04:18:59,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:18:59,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 527 transitions. [2023-08-30 04:18:59,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 263.5) internal successors, (527), 2 states have internal predecessors, (527), 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 04:18:59,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 452.0) internal successors, (1356), 3 states have internal predecessors, (1356), 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 04:18:59,094 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 452.0) internal successors, (1356), 3 states have internal predecessors, (1356), 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 04:18:59,095 INFO L175 Difference]: Start difference. First operand has 91 places, 103 transitions, 228 flow. Second operand 2 states and 527 transitions. [2023-08-30 04:18:59,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 88 transitions, 318 flow [2023-08-30 04:18:59,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 318 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:18:59,105 INFO L231 Difference]: Finished difference. Result has 88 places, 88 transitions, 198 flow [2023-08-30 04:18:59,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=198, PETRI_PLACES=88, PETRI_TRANSITIONS=88} [2023-08-30 04:18:59,108 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -3 predicate places. [2023-08-30 04:18:59,109 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 88 transitions, 198 flow [2023-08-30 04:18:59,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 226.5) internal successors, (453), 2 states have internal predecessors, (453), 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 04:18:59,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:18:59,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 04:18:59,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 04:18:59,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-08-30 04:18:59,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:18:59,110 INFO L85 PathProgramCache]: Analyzing trace with hash 30624, now seen corresponding path program 1 times [2023-08-30 04:18:59,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:18:59,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372195512] [2023-08-30 04:18:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:18:59,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:18:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:18:59,333 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 04:18:59,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:18:59,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372195512] [2023-08-30 04:18:59,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372195512] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:18:59,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:18:59,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:18:59,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960469066] [2023-08-30 04:18:59,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:18:59,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:18:59,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:18:59,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:18:59,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:18:59,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 452 [2023-08-30 04:18:59,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 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 04:18:59,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:18:59,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 452 [2023-08-30 04:18:59,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:19:00,224 INFO L130 PetriNetUnfolder]: 6726/12320 cut-off events. [2023-08-30 04:19:00,225 INFO L131 PetriNetUnfolder]: For 158/158 co-relation queries the response was YES. [2023-08-30 04:19:00,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22815 conditions, 12320 events. 6726/12320 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 95616 event pairs, 5979 based on Foata normal form. 0/7311 useless extension candidates. Maximal degree in co-relation 22810. Up to 10391 conditions per place. [2023-08-30 04:19:00,265 INFO L137 encePairwiseOnDemand]: 447/452 looper letters, 61 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2023-08-30 04:19:00,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 92 transitions, 334 flow [2023-08-30 04:19:00,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:19:00,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:19:00,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 723 transitions. [2023-08-30 04:19:00,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331858407079646 [2023-08-30 04:19:00,268 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 723 transitions. [2023-08-30 04:19:00,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 723 transitions. [2023-08-30 04:19:00,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:19:00,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 723 transitions. [2023-08-30 04:19:00,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 04:19:00,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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 04:19:00,273 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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 04:19:00,273 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 198 flow. Second operand 3 states and 723 transitions. [2023-08-30 04:19:00,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 92 transitions, 334 flow [2023-08-30 04:19:00,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 92 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:19:00,275 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 219 flow [2023-08-30 04:19:00,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2023-08-30 04:19:00,276 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 0 predicate places. [2023-08-30 04:19:00,276 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 219 flow [2023-08-30 04:19:00,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 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 04:19:00,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:19:00,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 04:19:00,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 04:19:00,277 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-08-30 04:19:00,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:19:00,277 INFO L85 PathProgramCache]: Analyzing trace with hash 30625, now seen corresponding path program 1 times [2023-08-30 04:19:00,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:19:00,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98789629] [2023-08-30 04:19:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:19:00,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:19:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:19:00,310 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 04:19:00,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:19:00,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98789629] [2023-08-30 04:19:00,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98789629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:19:00,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:19:00,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:19:00,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210564067] [2023-08-30 04:19:00,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:19:00,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:19:00,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:19:00,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:19:00,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:19:00,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 452 [2023-08-30 04:19:00,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 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 04:19:00,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:19:00,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 452 [2023-08-30 04:19:00,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:19:01,227 INFO L130 PetriNetUnfolder]: 6256/11603 cut-off events. [2023-08-30 04:19:01,228 INFO L131 PetriNetUnfolder]: For 532/532 co-relation queries the response was YES. [2023-08-30 04:19:01,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21815 conditions, 11603 events. 6256/11603 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 91344 event pairs, 4420 based on Foata normal form. 0/6971 useless extension candidates. Maximal degree in co-relation 21808. Up to 7728 conditions per place. [2023-08-30 04:19:01,262 INFO L137 encePairwiseOnDemand]: 448/452 looper letters, 89 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2023-08-30 04:19:01,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 119 transitions, 461 flow [2023-08-30 04:19:01,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:19:01,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:19:01,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 742 transitions. [2023-08-30 04:19:01,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471976401179941 [2023-08-30 04:19:01,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 742 transitions. [2023-08-30 04:19:01,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 742 transitions. [2023-08-30 04:19:01,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:19:01,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 742 transitions. [2023-08-30 04:19:01,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 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 04:19:01,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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 04:19:01,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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 04:19:01,269 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 219 flow. Second operand 3 states and 742 transitions. [2023-08-30 04:19:01,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 119 transitions, 461 flow [2023-08-30 04:19:01,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 119 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:19:01,271 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 216 flow [2023-08-30 04:19:01,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2023-08-30 04:19:01,272 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -1 predicate places. [2023-08-30 04:19:01,272 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 216 flow [2023-08-30 04:19:01,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 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 04:19:01,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:19:01,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:19:01,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 04:19:01,273 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-08-30 04:19:01,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:19:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash 913012262, now seen corresponding path program 1 times [2023-08-30 04:19:01,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:19:01,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113881908] [2023-08-30 04:19:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:19:01,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:19:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:19:01,339 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 04:19:01,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:19:01,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113881908] [2023-08-30 04:19:01,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113881908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:19:01,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:19:01,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 04:19:01,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630901775] [2023-08-30 04:19:01,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:19:01,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:19:01,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:19:01,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:19:01,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:19:01,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 452 [2023-08-30 04:19:01,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 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 04:19:01,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:19:01,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 452 [2023-08-30 04:19:01,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:19:02,355 INFO L130 PetriNetUnfolder]: 8211/15154 cut-off events. [2023-08-30 04:19:02,357 INFO L131 PetriNetUnfolder]: For 774/774 co-relation queries the response was YES. [2023-08-30 04:19:02,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28696 conditions, 15154 events. 8211/15154 cut-off events. For 774/774 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 122814 event pairs, 5824 based on Foata normal form. 0/9718 useless extension candidates. Maximal degree in co-relation 28689. Up to 9647 conditions per place. [2023-08-30 04:19:02,418 INFO L137 encePairwiseOnDemand]: 445/452 looper letters, 110 selfloop transitions, 6 changer transitions 0/141 dead transitions. [2023-08-30 04:19:02,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 141 transitions, 569 flow [2023-08-30 04:19:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:19:02,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:19:02,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 771 transitions. [2023-08-30 04:19:02,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5685840707964602 [2023-08-30 04:19:02,420 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 771 transitions. [2023-08-30 04:19:02,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 771 transitions. [2023-08-30 04:19:02,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:19:02,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 771 transitions. [2023-08-30 04:19:02,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 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 04:19:02,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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 04:19:02,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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 04:19:02,428 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 216 flow. Second operand 3 states and 771 transitions. [2023-08-30 04:19:02,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 141 transitions, 569 flow [2023-08-30 04:19:02,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 141 transitions, 563 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:19:02,433 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 256 flow [2023-08-30 04:19:02,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=92, PETRI_TRANSITIONS=92} [2023-08-30 04:19:02,435 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 1 predicate places. [2023-08-30 04:19:02,435 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 256 flow [2023-08-30 04:19:02,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 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 04:19:02,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:19:02,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:19:02,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 04:19:02,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-08-30 04:19:02,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:19:02,436 INFO L85 PathProgramCache]: Analyzing trace with hash 913012263, now seen corresponding path program 1 times [2023-08-30 04:19:02,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:19:02,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248493810] [2023-08-30 04:19:02,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:19:02,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:19:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:19:02,542 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 04:19:02,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:19:02,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248493810] [2023-08-30 04:19:02,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248493810] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:19:02,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:19:02,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 04:19:02,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999527520] [2023-08-30 04:19:02,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:19:02,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:19:02,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:19:02,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:19:02,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:19:02,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 452 [2023-08-30 04:19:02,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 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 04:19:02,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:19:02,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 452 [2023-08-30 04:19:02,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:19:04,355 INFO L130 PetriNetUnfolder]: 15439/28840 cut-off events. [2023-08-30 04:19:04,355 INFO L131 PetriNetUnfolder]: For 6946/7716 co-relation queries the response was YES. [2023-08-30 04:19:04,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57953 conditions, 28840 events. 15439/28840 cut-off events. For 6946/7716 co-relation queries the response was YES. Maximal size of possible extension queue 1363. Compared 267765 event pairs, 8077 based on Foata normal form. 938/19380 useless extension candidates. Maximal degree in co-relation 57945. Up to 13223 conditions per place. [2023-08-30 04:19:04,572 INFO L137 encePairwiseOnDemand]: 448/452 looper letters, 118 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2023-08-30 04:19:04,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 148 transitions, 645 flow [2023-08-30 04:19:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:19:04,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:19:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2023-08-30 04:19:04,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5730088495575221 [2023-08-30 04:19:04,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2023-08-30 04:19:04,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2023-08-30 04:19:04,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:19:04,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2023-08-30 04:19:04,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 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 04:19:04,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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 04:19:04,579 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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 04:19:04,579 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 256 flow. Second operand 3 states and 777 transitions. [2023-08-30 04:19:04,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 148 transitions, 645 flow [2023-08-30 04:19:04,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 148 transitions, 627 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:19:04,586 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 263 flow [2023-08-30 04:19:04,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2023-08-30 04:19:04,588 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2023-08-30 04:19:04,588 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 263 flow [2023-08-30 04:19:04,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 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 04:19:04,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:19:04,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:19:04,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 04:19:04,589 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-08-30 04:19:04,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:19:04,590 INFO L85 PathProgramCache]: Analyzing trace with hash 913012647, now seen corresponding path program 1 times [2023-08-30 04:19:04,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:19:04,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982404298] [2023-08-30 04:19:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:19:04,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:19:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:19:04,672 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 04:19:04,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:19:04,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982404298] [2023-08-30 04:19:04,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982404298] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:19:04,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273522840] [2023-08-30 04:19:04,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:19:04,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:19:04,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:19:04,678 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 04:19:04,679 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 04:19:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:19:04,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 04:19:04,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:19:04,819 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 04:19:04,820 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-08-30 04:19:04,867 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 04:19:04,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:19:04,899 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 04:19:04,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273522840] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:19:04,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 04:19:04,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-08-30 04:19:04,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792804621] [2023-08-30 04:19:04,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 04:19:04,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 04:19:04,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:19:04,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 04:19:04,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-30 04:19:05,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 452 [2023-08-30 04:19:05,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 263 flow. Second operand has 8 states, 8 states have (on average 215.875) internal successors, (1727), 8 states have internal predecessors, (1727), 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 04:19:05,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:19:05,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 452 [2023-08-30 04:19:05,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:19:05,957 INFO L130 PetriNetUnfolder]: 6609/12308 cut-off events. [2023-08-30 04:19:05,958 INFO L131 PetriNetUnfolder]: For 1259/1745 co-relation queries the response was YES. [2023-08-30 04:19:05,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23957 conditions, 12308 events. 6609/12308 cut-off events. For 1259/1745 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 100013 event pairs, 3513 based on Foata normal form. 76/7893 useless extension candidates. Maximal degree in co-relation 23948. Up to 10274 conditions per place. [2023-08-30 04:19:06,002 INFO L137 encePairwiseOnDemand]: 447/452 looper letters, 71 selfloop transitions, 6 changer transitions 0/106 dead transitions. [2023-08-30 04:19:06,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 106 transitions, 439 flow [2023-08-30 04:19:06,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 04:19:06,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 04:19:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1362 transitions. [2023-08-30 04:19:06,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022123893805309 [2023-08-30 04:19:06,005 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1362 transitions. [2023-08-30 04:19:06,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1362 transitions. [2023-08-30 04:19:06,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:19:06,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1362 transitions. [2023-08-30 04:19:06,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 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 04:19:06,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 452.0) internal successors, (3164), 7 states have internal predecessors, (3164), 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 04:19:06,012 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 452.0) internal successors, (3164), 7 states have internal predecessors, (3164), 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 04:19:06,013 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 263 flow. Second operand 6 states and 1362 transitions. [2023-08-30 04:19:06,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 106 transitions, 439 flow [2023-08-30 04:19:06,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 106 transitions, 436 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:19:06,015 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 258 flow [2023-08-30 04:19:06,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2023-08-30 04:19:06,016 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2023-08-30 04:19:06,016 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 258 flow [2023-08-30 04:19:06,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 215.875) internal successors, (1727), 8 states have internal predecessors, (1727), 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 04:19:06,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:19:06,017 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 04:19:06,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 04:19:06,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 04:19:06,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-08-30 04:19:06,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:19:06,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1761378325, now seen corresponding path program 1 times [2023-08-30 04:19:06,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:19:06,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302355477] [2023-08-30 04:19:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:19:06,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:19:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 04:19:06,239 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 04:19:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 04:19:06,263 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 04:19:06,263 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 04:19:06,264 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (64 of 65 remaining) [2023-08-30 04:19:06,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 65 remaining) [2023-08-30 04:19:06,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 65 remaining) [2023-08-30 04:19:06,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 65 remaining) [2023-08-30 04:19:06,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 65 remaining) [2023-08-30 04:19:06,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 65 remaining) [2023-08-30 04:19:06,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 65 remaining) [2023-08-30 04:19:06,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 65 remaining) [2023-08-30 04:19:06,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 65 remaining) [2023-08-30 04:19:06,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 65 remaining) [2023-08-30 04:19:06,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 65 remaining) [2023-08-30 04:19:06,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 65 remaining) [2023-08-30 04:19:06,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 65 remaining) [2023-08-30 04:19:06,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 65 remaining) [2023-08-30 04:19:06,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 65 remaining) [2023-08-30 04:19:06,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14ASSERT_VIOLATIONMEMORY_LEAK (49 of 65 remaining) [2023-08-30 04:19:06,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 65 remaining) [2023-08-30 04:19:06,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 65 remaining) [2023-08-30 04:19:06,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 65 remaining) [2023-08-30 04:19:06,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 65 remaining) [2023-08-30 04:19:06,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 65 remaining) [2023-08-30 04:19:06,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 65 remaining) [2023-08-30 04:19:06,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 65 remaining) [2023-08-30 04:19:06,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 65 remaining) [2023-08-30 04:19:06,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 65 remaining) [2023-08-30 04:19:06,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 65 remaining) [2023-08-30 04:19:06,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 65 remaining) [2023-08-30 04:19:06,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 65 remaining) [2023-08-30 04:19:06,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (36 of 65 remaining) [2023-08-30 04:19:06,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 65 remaining) [2023-08-30 04:19:06,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 65 remaining) [2023-08-30 04:19:06,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 65 remaining) [2023-08-30 04:19:06,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 65 remaining) [2023-08-30 04:19:06,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 65 remaining) [2023-08-30 04:19:06,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 65 remaining) [2023-08-30 04:19:06,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 65 remaining) [2023-08-30 04:19:06,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 65 remaining) [2023-08-30 04:19:06,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 65 remaining) [2023-08-30 04:19:06,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 65 remaining) [2023-08-30 04:19:06,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 65 remaining) [2023-08-30 04:19:06,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 65 remaining) [2023-08-30 04:19:06,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 65 remaining) [2023-08-30 04:19:06,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 65 remaining) [2023-08-30 04:19:06,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 65 remaining) [2023-08-30 04:19:06,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 65 remaining) [2023-08-30 04:19:06,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 65 remaining) [2023-08-30 04:19:06,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 65 remaining) [2023-08-30 04:19:06,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 65 remaining) [2023-08-30 04:19:06,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 65 remaining) [2023-08-30 04:19:06,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 65 remaining) [2023-08-30 04:19:06,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 65 remaining) [2023-08-30 04:19:06,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 65 remaining) [2023-08-30 04:19:06,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 65 remaining) [2023-08-30 04:19:06,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 65 remaining) [2023-08-30 04:19:06,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14ASSERT_VIOLATIONMEMORY_LEAK (10 of 65 remaining) [2023-08-30 04:19:06,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 65 remaining) [2023-08-30 04:19:06,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 65 remaining) [2023-08-30 04:19:06,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 65 remaining) [2023-08-30 04:19:06,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 65 remaining) [2023-08-30 04:19:06,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 65 remaining) [2023-08-30 04:19:06,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 65 remaining) [2023-08-30 04:19:06,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 65 remaining) [2023-08-30 04:19:06,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 65 remaining) [2023-08-30 04:19:06,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 65 remaining) [2023-08-30 04:19:06,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 65 remaining) [2023-08-30 04:19:06,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 04:19:06,276 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:19:06,278 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 04:19:06,278 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 04:19:06,347 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-30 04:19:06,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 387 transitions, 822 flow [2023-08-30 04:19:06,524 INFO L130 PetriNetUnfolder]: 191/1424 cut-off events. [2023-08-30 04:19:06,525 INFO L131 PetriNetUnfolder]: For 72/95 co-relation queries the response was YES. [2023-08-30 04:19:06,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 1424 events. 191/1424 cut-off events. For 72/95 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 9739 event pairs, 2 based on Foata normal form. 0/1025 useless extension candidates. Maximal degree in co-relation 888. Up to 32 conditions per place. [2023-08-30 04:19:06,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 354 places, 387 transitions, 822 flow [2023-08-30 04:19:06,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 354 places, 387 transitions, 822 flow [2023-08-30 04:19:06,613 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 04:19:06,613 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 354 places, 387 transitions, 822 flow [2023-08-30 04:19:06,613 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 354 places, 387 transitions, 822 flow [2023-08-30 04:19:06,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 387 transitions, 822 flow [2023-08-30 04:19:06,750 INFO L130 PetriNetUnfolder]: 191/1424 cut-off events. [2023-08-30 04:19:06,750 INFO L131 PetriNetUnfolder]: For 72/95 co-relation queries the response was YES. [2023-08-30 04:19:06,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 1424 events. 191/1424 cut-off events. For 72/95 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 9739 event pairs, 2 based on Foata normal form. 0/1025 useless extension candidates. Maximal degree in co-relation 888. Up to 32 conditions per place. [2023-08-30 04:19:06,821 INFO L119 LiptonReduction]: Number of co-enabled transitions 78012 [2023-08-30 04:19:15,138 INFO L134 LiptonReduction]: Checked pairs total: 282899 [2023-08-30 04:19:15,138 INFO L136 LiptonReduction]: Total number of compositions: 326 [2023-08-30 04:19:15,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 04:19:15,140 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;@4ff7cc8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 04:19:15,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2023-08-30 04:19:15,140 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 04:19:15,140 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:19:15,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:19:15,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 04:19:15,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 87 more)] === [2023-08-30 04:19:15,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:19:15,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1806, now seen corresponding path program 1 times [2023-08-30 04:19:15,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:19:15,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711589825] [2023-08-30 04:19:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:19:15,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:19:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:19:15,145 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 04:19:15,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:19:15,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711589825] [2023-08-30 04:19:15,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711589825] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:19:15,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:19:15,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 04:19:15,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467865216] [2023-08-30 04:19:15,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:19:15,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 04:19:15,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:19:15,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 04:19:15,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 04:19:15,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 713 [2023-08-30 04:19:15,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 175 transitions, 398 flow. Second operand has 2 states, 2 states have (on average 345.5) internal successors, (691), 2 states have internal predecessors, (691), 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 04:19:15,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:19:15,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 713 [2023-08-30 04:19:15,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand