./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.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_83-list2_racing1.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 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d --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 04:19:43,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 04:19:43,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 04:19:43,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 04:19:43,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 04:19:43,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 04:19:43,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 04:19:43,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 04:19:43,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 04:19:43,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 04:19:43,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 04:19:43,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 04:19:43,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 04:19:43,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 04:19:43,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 04:19:43,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 04:19:43,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 04:19:43,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 04:19:43,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 04:19:43,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 04:19:43,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 04:19:43,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 04:19:43,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 04:19:43,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 04:19:43,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 04:19:43,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 04:19:43,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 04:19:43,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 04:19:43,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 04:19:43,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 04:19:43,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 04:19:43,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 04:19:43,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 04:19:43,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 04:19:43,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 04:19:43,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 04:19:43,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 04:19:43,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 04:19:43,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 04:19:43,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 04:19:43,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 04:19:43,152 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 04:19:43,187 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 04:19:43,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 04:19:43,189 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 04:19:43,189 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 04:19:43,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 04:19:43,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 04:19:43,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 04:19:43,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 04:19:43,191 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 04:19:43,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 04:19:43,192 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 04:19:43,192 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 04:19:43,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 04:19:43,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 04:19:43,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 04:19:43,193 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 04:19:43,193 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 04:19:43,193 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 04:19:43,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 04:19:43,193 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 04:19:43,193 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 04:19:43,194 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 04:19:43,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 04:19:43,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 04:19:43,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 04:19:43,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:19:43,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 04:19:43,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 04:19:43,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 04:19:43,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 04:19:43,195 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 04:19:43,195 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 04:19:43,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 04:19:43,196 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 04:19:43,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 04:19:43,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 04:19:43,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 04:19:43,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 04:19:43,544 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 04:19:43,544 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 04:19:43,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-08-30 04:19:44,801 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 04:19:45,099 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 04:19:45,100 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-08-30 04:19:45,115 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cfd1940e/542f5ae225ab4a73ada20ee039e00862/FLAG4446e187d [2023-08-30 04:19:45,130 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cfd1940e/542f5ae225ab4a73ada20ee039e00862 [2023-08-30 04:19:45,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 04:19:45,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 04:19:45,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 04:19:45,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 04:19:45,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 04:19:45,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:19:45" (1/1) ... [2023-08-30 04:19:45,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b63512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:19:45, skipping insertion in model container [2023-08-30 04:19:45,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:19:45" (1/1) ... [2023-08-30 04:19:45,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 04:19:45,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:19:45,724 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_83-list2_racing1.i[47038,47051] [2023-08-30 04:19:45,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:19:45,816 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 04:19:45,861 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_83-list2_racing1.i[47038,47051] [2023-08-30 04:19:45,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:19:45,966 INFO L208 MainTranslator]: Completed translation [2023-08-30 04:19:45,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:19:45 WrapperNode [2023-08-30 04:19:45,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 04:19:45,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 04:19:45,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 04:19:45,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 04:19:45,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:19:45" (1/1) ... [2023-08-30 04:19:46,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:19:45" (1/1) ... [2023-08-30 04:19:46,059 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 344 [2023-08-30 04:19:46,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 04:19:46,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 04:19:46,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 04:19:46,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 04:19:46,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:19:45" (1/1) ... [2023-08-30 04:19:46,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:19:45" (1/1) ... [2023-08-30 04:19:46,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:19:45" (1/1) ... [2023-08-30 04:19:46,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:19:45" (1/1) ... [2023-08-30 04:19:46,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:19:45" (1/1) ... [2023-08-30 04:19:46,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:19:45" (1/1) ... [2023-08-30 04:19:46,114 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:19:45" (1/1) ... [2023-08-30 04:19:46,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:19:45" (1/1) ... [2023-08-30 04:19:46,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 04:19:46,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 04:19:46,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 04:19:46,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 04:19:46,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:19:45" (1/1) ... [2023-08-30 04:19:46,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:19:46,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:19:46,167 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 04:19:46,188 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 04:19:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 04:19:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 04:19:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-30 04:19:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-30 04:19:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 04:19:46,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 04:19:46,199 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-30 04:19:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-30 04:19:46,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 04:19:46,199 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 04:19:46,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 04:19:46,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 04:19:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 04:19:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-30 04:19:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-30 04:19:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 04:19:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 04:19:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 04:19:46,202 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 04:19:46,385 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 04:19:46,387 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 04:19:46,908 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 04:19:46,917 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 04:19:46,917 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-08-30 04:19:46,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:19:46 BoogieIcfgContainer [2023-08-30 04:19:46,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 04:19:46,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 04:19:46,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 04:19:46,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 04:19:46,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:19:45" (1/3) ... [2023-08-30 04:19:46,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a0c078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:19:46, skipping insertion in model container [2023-08-30 04:19:46,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:19:45" (2/3) ... [2023-08-30 04:19:46,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a0c078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:19:46, skipping insertion in model container [2023-08-30 04:19:46,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:19:46" (3/3) ... [2023-08-30 04:19:46,932 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_83-list2_racing1.i [2023-08-30 04:19:46,947 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 04:19:46,947 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2023-08-30 04:19:46,948 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 04:19:47,127 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-30 04:19:47,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 412 transitions, 866 flow [2023-08-30 04:19:47,528 INFO L130 PetriNetUnfolder]: 164/1274 cut-off events. [2023-08-30 04:19:47,528 INFO L131 PetriNetUnfolder]: For 36/61 co-relation queries the response was YES. [2023-08-30 04:19:47,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 1274 events. 164/1274 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 8885 event pairs, 0 based on Foata normal form. 0/912 useless extension candidates. Maximal degree in co-relation 658. Up to 16 conditions per place. [2023-08-30 04:19:47,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 374 places, 412 transitions, 866 flow [2023-08-30 04:19:47,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 412 transitions, 866 flow [2023-08-30 04:19:47,578 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 04:19:47,591 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 412 transitions, 866 flow [2023-08-30 04:19:47,597 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 412 transitions, 866 flow [2023-08-30 04:19:47,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 412 transitions, 866 flow [2023-08-30 04:19:47,834 INFO L130 PetriNetUnfolder]: 164/1274 cut-off events. [2023-08-30 04:19:47,834 INFO L131 PetriNetUnfolder]: For 36/61 co-relation queries the response was YES. [2023-08-30 04:19:47,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 1274 events. 164/1274 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 8885 event pairs, 0 based on Foata normal form. 0/912 useless extension candidates. Maximal degree in co-relation 658. Up to 16 conditions per place. [2023-08-30 04:19:47,920 INFO L119 LiptonReduction]: Number of co-enabled transitions 73218 [2023-08-30 04:20:07,725 INFO L134 LiptonReduction]: Checked pairs total: 203082 [2023-08-30 04:20:07,725 INFO L136 LiptonReduction]: Total number of compositions: 362 [2023-08-30 04:20:07,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 04:20:07,743 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;@6c7b5fd2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 04:20:07,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 104 error locations. [2023-08-30 04:20:07,745 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 04:20:07,745 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:20:07,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:20:07,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 04:20:07,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2023-08-30 04:20:07,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:20:07,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1620, now seen corresponding path program 1 times [2023-08-30 04:20:07,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:20:07,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112631340] [2023-08-30 04:20:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:20:07,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:20:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:20:07,870 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 04:20:07,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:20:07,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112631340] [2023-08-30 04:20:07,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112631340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:20:07,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:20:07,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 04:20:07,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652134711] [2023-08-30 04:20:07,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:20:07,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 04:20:07,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:20:07,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 04:20:07,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 04:20:07,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 774 [2023-08-30 04:20:07,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 176 transitions, 394 flow. Second operand has 2 states, 2 states have (on average 368.5) internal successors, (737), 2 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:20:07,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:20:07,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 774 [2023-08-30 04:20:07,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:21:11,931 INFO L130 PetriNetUnfolder]: 673122/1009369 cut-off events. [2023-08-30 04:21:11,931 INFO L131 PetriNetUnfolder]: For 8904/8904 co-relation queries the response was YES. [2023-08-30 04:21:13,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1908639 conditions, 1009369 events. 673122/1009369 cut-off events. For 8904/8904 co-relation queries the response was YES. Maximal size of possible extension queue 24696. Compared 9853778 event pairs, 632691 based on Foata normal form. 44122/585283 useless extension candidates. Maximal degree in co-relation 1791222. Up to 894018 conditions per place. [2023-08-30 04:21:18,052 INFO L137 encePairwiseOnDemand]: 743/774 looper letters, 111 selfloop transitions, 0 changer transitions 0/145 dead transitions. [2023-08-30 04:21:18,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 145 transitions, 554 flow [2023-08-30 04:21:18,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 04:21:18,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 04:21:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 878 transitions. [2023-08-30 04:21:18,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5671834625322998 [2023-08-30 04:21:18,068 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 878 transitions. [2023-08-30 04:21:18,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 878 transitions. [2023-08-30 04:21:18,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:21:18,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 878 transitions. [2023-08-30 04:21:18,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 439.0) internal successors, (878), 2 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:21:18,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 774.0) internal successors, (2322), 3 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:21:18,087 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 774.0) internal successors, (2322), 3 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:21:18,088 INFO L175 Difference]: Start difference. First operand has 147 places, 176 transitions, 394 flow. Second operand 2 states and 878 transitions. [2023-08-30 04:21:18,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 145 transitions, 554 flow [2023-08-30 04:21:18,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 145 transitions, 554 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:21:18,380 INFO L231 Difference]: Finished difference. Result has 140 places, 145 transitions, 332 flow [2023-08-30 04:21:18,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=332, PETRI_PLACES=140, PETRI_TRANSITIONS=145} [2023-08-30 04:21:18,385 INFO L281 CegarLoopForPetriNet]: 147 programPoint places, -7 predicate places. [2023-08-30 04:21:18,385 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 145 transitions, 332 flow [2023-08-30 04:21:18,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 368.5) internal successors, (737), 2 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:21:18,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:21:18,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 04:21:18,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 04:21:18,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2023-08-30 04:21:18,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:21:18,399 INFO L85 PathProgramCache]: Analyzing trace with hash 51956, now seen corresponding path program 1 times [2023-08-30 04:21:18,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:21:18,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133502548] [2023-08-30 04:21:18,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:21:18,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:21:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:21:18,640 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 04:21:18,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:21:18,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133502548] [2023-08-30 04:21:18,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133502548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:21:18,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:21:18,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:21:18,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540272676] [2023-08-30 04:21:18,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:21:18,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:21:18,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:21:18,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:21:18,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:21:18,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 358 out of 774 [2023-08-30 04:21:18,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 145 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:21:18,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:21:18,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 358 of 774 [2023-08-30 04:21:18,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:22:17,265 INFO L130 PetriNetUnfolder]: 639509/940368 cut-off events. [2023-08-30 04:22:17,265 INFO L131 PetriNetUnfolder]: For 8904/8904 co-relation queries the response was YES. [2023-08-30 04:22:19,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1801241 conditions, 940368 events. 639509/940368 cut-off events. For 8904/8904 co-relation queries the response was YES. Maximal size of possible extension queue 23137. Compared 8917220 event pairs, 440423 based on Foata normal form. 0/510942 useless extension candidates. Maximal degree in co-relation 1801235. Up to 625399 conditions per place. [2023-08-30 04:22:23,232 INFO L137 encePairwiseOnDemand]: 770/774 looper letters, 170 selfloop transitions, 2 changer transitions 0/206 dead transitions. [2023-08-30 04:22:23,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 206 transitions, 798 flow [2023-08-30 04:22:23,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:22:23,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:22:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1248 transitions. [2023-08-30 04:22:23,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.537467700258398 [2023-08-30 04:22:23,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1248 transitions. [2023-08-30 04:22:23,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1248 transitions. [2023-08-30 04:22:23,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:22:23,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1248 transitions. [2023-08-30 04:22:23,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:22:23,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 774.0) internal successors, (3096), 4 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:22:23,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 774.0) internal successors, (3096), 4 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:22:23,253 INFO L175 Difference]: Start difference. First operand has 140 places, 145 transitions, 332 flow. Second operand 3 states and 1248 transitions. [2023-08-30 04:22:23,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 206 transitions, 798 flow [2023-08-30 04:22:23,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 206 transitions, 798 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:22:23,379 INFO L231 Difference]: Finished difference. Result has 140 places, 143 transitions, 332 flow [2023-08-30 04:22:23,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=140, PETRI_TRANSITIONS=143} [2023-08-30 04:22:23,381 INFO L281 CegarLoopForPetriNet]: 147 programPoint places, -7 predicate places. [2023-08-30 04:22:23,381 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 143 transitions, 332 flow [2023-08-30 04:22:23,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:22:23,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:22:23,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 04:22:23,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 04:22:23,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2023-08-30 04:22:23,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:22:23,383 INFO L85 PathProgramCache]: Analyzing trace with hash 51955, now seen corresponding path program 1 times [2023-08-30 04:22:23,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:22:23,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174816012] [2023-08-30 04:22:23,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:22:23,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:22:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:22:23,561 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 04:22:23,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:22:23,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174816012] [2023-08-30 04:22:23,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174816012] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:22:23,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:22:23,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:22:23,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122447128] [2023-08-30 04:22:23,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:22:23,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:22:23,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:22:23,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:22:23,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:22:23,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 360 out of 774 [2023-08-30 04:22:23,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 143 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 360.6666666666667) internal successors, (1082), 3 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:22:23,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:22:23,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 360 of 774 [2023-08-30 04:22:23,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:23:24,328 INFO L130 PetriNetUnfolder]: 637241/947077 cut-off events. [2023-08-30 04:23:24,329 INFO L131 PetriNetUnfolder]: For 19536/19536 co-relation queries the response was YES. [2023-08-30 04:23:26,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1807973 conditions, 947077 events. 637241/947077 cut-off events. For 19536/19536 co-relation queries the response was YES. Maximal size of possible extension queue 22761. Compared 9014111 event pairs, 584416 based on Foata normal form. 0/527308 useless extension candidates. Maximal degree in co-relation 1807966. Up to 845511 conditions per place. [2023-08-30 04:23:30,108 INFO L137 encePairwiseOnDemand]: 769/774 looper letters, 109 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2023-08-30 04:23:30,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 146 transitions, 562 flow [2023-08-30 04:23:30,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:23:30,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:23:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1194 transitions. [2023-08-30 04:23:30,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142118863049095 [2023-08-30 04:23:30,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1194 transitions. [2023-08-30 04:23:30,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1194 transitions. [2023-08-30 04:23:30,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:23:30,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1194 transitions. [2023-08-30 04:23:30,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 398.0) internal successors, (1194), 3 states have internal predecessors, (1194), 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 04:23:30,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 774.0) internal successors, (3096), 4 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:23:30,120 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 774.0) internal successors, (3096), 4 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:23:30,120 INFO L175 Difference]: Start difference. First operand has 140 places, 143 transitions, 332 flow. Second operand 3 states and 1194 transitions. [2023-08-30 04:23:30,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 146 transitions, 562 flow [2023-08-30 04:23:32,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 146 transitions, 558 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:23:32,409 INFO L231 Difference]: Finished difference. Result has 141 places, 145 transitions, 349 flow [2023-08-30 04:23:32,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=141, PETRI_TRANSITIONS=145} [2023-08-30 04:23:32,410 INFO L281 CegarLoopForPetriNet]: 147 programPoint places, -6 predicate places. [2023-08-30 04:23:32,410 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 145 transitions, 349 flow [2023-08-30 04:23:32,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 360.6666666666667) internal successors, (1082), 3 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:23:32,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:23:32,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:23:32,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 04:23:32,411 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2023-08-30 04:23:32,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:23:32,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1549074958, now seen corresponding path program 1 times [2023-08-30 04:23:32,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:23:32,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815507034] [2023-08-30 04:23:32,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:23:32,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:23:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:23:32,564 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 04:23:32,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:23:32,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815507034] [2023-08-30 04:23:32,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815507034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:23:32,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:23:32,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 04:23:32,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077180808] [2023-08-30 04:23:32,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:23:32,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:23:32,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:23:32,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:23:32,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:23:32,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 774 [2023-08-30 04:23:32,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 145 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 368.6666666666667) internal successors, (1106), 3 states have internal predecessors, (1106), 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 04:23:32,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:23:32,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 774 [2023-08-30 04:23:32,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:24:28,784 INFO L130 PetriNetUnfolder]: 592679/889394 cut-off events. [2023-08-30 04:24:28,784 INFO L131 PetriNetUnfolder]: For 24902/24902 co-relation queries the response was YES. [2023-08-30 04:24:30,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1696473 conditions, 889394 events. 592679/889394 cut-off events. For 24902/24902 co-relation queries the response was YES. Maximal size of possible extension queue 21718. Compared 8630072 event pairs, 232735 based on Foata normal form. 0/490116 useless extension candidates. Maximal degree in co-relation 1696465. Up to 743530 conditions per place. [2023-08-30 04:24:34,045 INFO L137 encePairwiseOnDemand]: 772/774 looper letters, 198 selfloop transitions, 2 changer transitions 0/234 dead transitions. [2023-08-30 04:24:34,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 234 transitions, 955 flow [2023-08-30 04:24:34,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:24:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:24:34,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1301 transitions. [2023-08-30 04:24:34,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602928509905254 [2023-08-30 04:24:34,050 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1301 transitions. [2023-08-30 04:24:34,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1301 transitions. [2023-08-30 04:24:34,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:24:34,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1301 transitions. [2023-08-30 04:24:34,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 433.6666666666667) internal successors, (1301), 3 states have internal predecessors, (1301), 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 04:24:34,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 774.0) internal successors, (3096), 4 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:24:34,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 774.0) internal successors, (3096), 4 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:24:34,059 INFO L175 Difference]: Start difference. First operand has 141 places, 145 transitions, 349 flow. Second operand 3 states and 1301 transitions. [2023-08-30 04:24:34,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 234 transitions, 955 flow [2023-08-30 04:24:34,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 234 transitions, 952 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:24:34,149 INFO L231 Difference]: Finished difference. Result has 141 places, 144 transitions, 348 flow [2023-08-30 04:24:34,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=141, PETRI_TRANSITIONS=144} [2023-08-30 04:24:34,150 INFO L281 CegarLoopForPetriNet]: 147 programPoint places, -6 predicate places. [2023-08-30 04:24:34,150 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 144 transitions, 348 flow [2023-08-30 04:24:34,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 368.6666666666667) internal successors, (1106), 3 states have internal predecessors, (1106), 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 04:24:34,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:24:34,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:24:34,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 04:24:34,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2023-08-30 04:24:34,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:24:34,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1549078245, now seen corresponding path program 1 times [2023-08-30 04:24:34,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:24:34,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656017265] [2023-08-30 04:24:34,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:24:34,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:24:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:24:34,260 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 04:24:34,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:24:34,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656017265] [2023-08-30 04:24:34,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656017265] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:24:34,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306506079] [2023-08-30 04:24:34,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:24:34,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:24:34,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:24:34,265 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 04:24:34,296 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 04:24:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:24:34,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 04:24:34,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:24:34,525 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-30 04:24:34,526 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 2 case distinctions, treesize of input 12 treesize of output 27 [2023-08-30 04:24:34,570 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 04:24:34,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:24:34,608 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 04:24:34,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306506079] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:24:34,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 04:24:34,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-08-30 04:24:34,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968176512] [2023-08-30 04:24:34,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 04:24:34,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 04:24:34,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:24:34,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 04:24:34,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-30 04:24:35,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 774 [2023-08-30 04:24:35,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 144 transitions, 348 flow. Second operand has 8 states, 8 states have (on average 355.875) internal successors, (2847), 8 states have internal predecessors, (2847), 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 04:24:35,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:24:35,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 774 [2023-08-30 04:24:35,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:25:29,287 INFO L130 PetriNetUnfolder]: 548108/817265 cut-off events. [2023-08-30 04:25:29,288 INFO L131 PetriNetUnfolder]: For 9200/9200 co-relation queries the response was YES. [2023-08-30 04:25:31,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550542 conditions, 817265 events. 548108/817265 cut-off events. For 9200/9200 co-relation queries the response was YES. Maximal size of possible extension queue 21046. Compared 7743339 event pairs, 349040 based on Foata normal form. 1/446587 useless extension candidates. Maximal degree in co-relation 1550534. Up to 728337 conditions per place. [2023-08-30 04:25:34,490 INFO L137 encePairwiseOnDemand]: 769/774 looper letters, 127 selfloop transitions, 6 changer transitions 0/167 dead transitions. [2023-08-30 04:25:34,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 167 transitions, 658 flow [2023-08-30 04:25:34,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 04:25:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 04:25:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2260 transitions. [2023-08-30 04:25:34,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48664944013781225 [2023-08-30 04:25:34,496 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2260 transitions. [2023-08-30 04:25:34,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2260 transitions. [2023-08-30 04:25:34,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:25:34,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2260 transitions. [2023-08-30 04:25:34,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 376.6666666666667) internal successors, (2260), 6 states have internal predecessors, (2260), 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 04:25:34,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 774.0) internal successors, (5418), 7 states have internal predecessors, (5418), 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 04:25:34,512 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 774.0) internal successors, (5418), 7 states have internal predecessors, (5418), 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 04:25:34,512 INFO L175 Difference]: Start difference. First operand has 141 places, 144 transitions, 348 flow. Second operand 6 states and 2260 transitions. [2023-08-30 04:25:34,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 167 transitions, 658 flow [2023-08-30 04:25:34,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 167 transitions, 656 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:25:34,530 INFO L231 Difference]: Finished difference. Result has 144 places, 143 transitions, 354 flow [2023-08-30 04:25:34,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=144, PETRI_TRANSITIONS=143} [2023-08-30 04:25:34,531 INFO L281 CegarLoopForPetriNet]: 147 programPoint places, -3 predicate places. [2023-08-30 04:25:34,531 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 143 transitions, 354 flow [2023-08-30 04:25:34,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 355.875) internal successors, (2847), 8 states have internal predecessors, (2847), 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 04:25:34,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:25:34,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:25:34,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 04:25:34,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:25:34,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2023-08-30 04:25:34,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:25:34,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1549074959, now seen corresponding path program 1 times [2023-08-30 04:25:34,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:25:34,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000158020] [2023-08-30 04:25:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:25:34,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:25:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:25:34,826 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 04:25:34,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:25:34,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000158020] [2023-08-30 04:25:34,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000158020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:25:34,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:25:34,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 04:25:34,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854419829] [2023-08-30 04:25:34,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:25:34,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:25:34,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:25:34,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:25:34,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:25:34,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 774 [2023-08-30 04:25:34,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 143 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 365.6666666666667) internal successors, (1097), 3 states have internal predecessors, (1097), 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 04:25:34,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:25:34,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 774 [2023-08-30 04:25:34,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:26:36,324 INFO L130 PetriNetUnfolder]: 621678/913734 cut-off events. [2023-08-30 04:26:36,324 INFO L131 PetriNetUnfolder]: For 9182/9182 co-relation queries the response was YES. [2023-08-30 04:26:38,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1751537 conditions, 913734 events. 621678/913734 cut-off events. For 9182/9182 co-relation queries the response was YES. Maximal size of possible extension queue 22543. Compared 8624467 event pairs, 421053 based on Foata normal form. 0/521966 useless extension candidates. Maximal degree in co-relation 1751529. Up to 625925 conditions per place. [2023-08-30 04:26:42,219 INFO L137 encePairwiseOnDemand]: 768/774 looper letters, 169 selfloop transitions, 6 changer transitions 0/209 dead transitions. [2023-08-30 04:26:42,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 209 transitions, 836 flow [2023-08-30 04:26:42,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:26:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:26:42,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1267 transitions. [2023-08-30 04:26:42,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545650301464255 [2023-08-30 04:26:42,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1267 transitions. [2023-08-30 04:26:42,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1267 transitions. [2023-08-30 04:26:42,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:26:42,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1267 transitions. [2023-08-30 04:26:42,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.3333333333333) internal successors, (1267), 3 states have internal predecessors, (1267), 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 04:26:42,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 774.0) internal successors, (3096), 4 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:26:42,230 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 774.0) internal successors, (3096), 4 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:26:42,230 INFO L175 Difference]: Start difference. First operand has 144 places, 143 transitions, 354 flow. Second operand 3 states and 1267 transitions. [2023-08-30 04:26:42,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 209 transitions, 836 flow [2023-08-30 04:26:42,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 209 transitions, 822 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 04:26:42,320 INFO L231 Difference]: Finished difference. Result has 145 places, 146 transitions, 378 flow [2023-08-30 04:26:42,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=145, PETRI_TRANSITIONS=146} [2023-08-30 04:26:42,321 INFO L281 CegarLoopForPetriNet]: 147 programPoint places, -2 predicate places. [2023-08-30 04:26:42,322 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 146 transitions, 378 flow [2023-08-30 04:26:42,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 365.6666666666667) internal successors, (1097), 3 states have internal predecessors, (1097), 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 04:26:42,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:26:42,322 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 04:26:42,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 04:26:42,323 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2023-08-30 04:26:42,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:26:42,323 INFO L85 PathProgramCache]: Analyzing trace with hash 776786626, now seen corresponding path program 1 times [2023-08-30 04:26:42,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:26:42,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225610543] [2023-08-30 04:26:42,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:26:42,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:26:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 04:26:42,344 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 04:26:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 04:26:42,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 04:26:42,373 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 04:26:42,374 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (103 of 104 remaining) [2023-08-30 04:26:42,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 104 remaining) [2023-08-30 04:26:42,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 104 remaining) [2023-08-30 04:26:42,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 104 remaining) [2023-08-30 04:26:42,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 104 remaining) [2023-08-30 04:26:42,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 104 remaining) [2023-08-30 04:26:42,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 104 remaining) [2023-08-30 04:26:42,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 104 remaining) [2023-08-30 04:26:42,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 104 remaining) [2023-08-30 04:26:42,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 104 remaining) [2023-08-30 04:26:42,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 104 remaining) [2023-08-30 04:26:42,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 104 remaining) [2023-08-30 04:26:42,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 104 remaining) [2023-08-30 04:26:42,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 104 remaining) [2023-08-30 04:26:42,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 104 remaining) [2023-08-30 04:26:42,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14ASSERT_VIOLATIONMEMORY_LEAK (88 of 104 remaining) [2023-08-30 04:26:42,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 104 remaining) [2023-08-30 04:26:42,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 104 remaining) [2023-08-30 04:26:42,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 104 remaining) [2023-08-30 04:26:42,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 104 remaining) [2023-08-30 04:26:42,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 104 remaining) [2023-08-30 04:26:42,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 104 remaining) [2023-08-30 04:26:42,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 104 remaining) [2023-08-30 04:26:42,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 104 remaining) [2023-08-30 04:26:42,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 104 remaining) [2023-08-30 04:26:42,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 104 remaining) [2023-08-30 04:26:42,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 104 remaining) [2023-08-30 04:26:42,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 104 remaining) [2023-08-30 04:26:42,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 104 remaining) [2023-08-30 04:26:42,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 104 remaining) [2023-08-30 04:26:42,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr14ASSERT_VIOLATIONMEMORY_LEAK (73 of 104 remaining) [2023-08-30 04:26:42,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 104 remaining) [2023-08-30 04:26:42,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 104 remaining) [2023-08-30 04:26:42,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 104 remaining) [2023-08-30 04:26:42,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 104 remaining) [2023-08-30 04:26:42,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 104 remaining) [2023-08-30 04:26:42,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 104 remaining) [2023-08-30 04:26:42,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 104 remaining) [2023-08-30 04:26:42,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 104 remaining) [2023-08-30 04:26:42,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 104 remaining) [2023-08-30 04:26:42,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 104 remaining) [2023-08-30 04:26:42,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 104 remaining) [2023-08-30 04:26:42,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 104 remaining) [2023-08-30 04:26:42,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 104 remaining) [2023-08-30 04:26:42,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 104 remaining) [2023-08-30 04:26:42,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 104 remaining) [2023-08-30 04:26:42,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 104 remaining) [2023-08-30 04:26:42,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 104 remaining) [2023-08-30 04:26:42,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 104 remaining) [2023-08-30 04:26:42,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 104 remaining) [2023-08-30 04:26:42,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 104 remaining) [2023-08-30 04:26:42,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK (52 of 104 remaining) [2023-08-30 04:26:42,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (51 of 104 remaining) [2023-08-30 04:26:42,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (50 of 104 remaining) [2023-08-30 04:26:42,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 104 remaining) [2023-08-30 04:26:42,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 104 remaining) [2023-08-30 04:26:42,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 104 remaining) [2023-08-30 04:26:42,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 104 remaining) [2023-08-30 04:26:42,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 104 remaining) [2023-08-30 04:26:42,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 104 remaining) [2023-08-30 04:26:42,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 104 remaining) [2023-08-30 04:26:42,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 104 remaining) [2023-08-30 04:26:42,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 104 remaining) [2023-08-30 04:26:42,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 104 remaining) [2023-08-30 04:26:42,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 104 remaining) [2023-08-30 04:26:42,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 104 remaining) [2023-08-30 04:26:42,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 104 remaining) [2023-08-30 04:26:42,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 104 remaining) [2023-08-30 04:26:42,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 104 remaining) [2023-08-30 04:26:42,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 104 remaining) [2023-08-30 04:26:42,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 104 remaining) [2023-08-30 04:26:42,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 104 remaining) [2023-08-30 04:26:42,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 104 remaining) [2023-08-30 04:26:42,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 104 remaining) [2023-08-30 04:26:42,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 104 remaining) [2023-08-30 04:26:42,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 104 remaining) [2023-08-30 04:26:42,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 104 remaining) [2023-08-30 04:26:42,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 104 remaining) [2023-08-30 04:26:42,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14ASSERT_VIOLATIONMEMORY_LEAK (25 of 104 remaining) [2023-08-30 04:26:42,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 104 remaining) [2023-08-30 04:26:42,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 104 remaining) [2023-08-30 04:26:42,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 104 remaining) [2023-08-30 04:26:42,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 104 remaining) [2023-08-30 04:26:42,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 104 remaining) [2023-08-30 04:26:42,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 104 remaining) [2023-08-30 04:26:42,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 104 remaining) [2023-08-30 04:26:42,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 104 remaining) [2023-08-30 04:26:42,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 104 remaining) [2023-08-30 04:26:42,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 104 remaining) [2023-08-30 04:26:42,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 104 remaining) [2023-08-30 04:26:42,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 104 remaining) [2023-08-30 04:26:42,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 104 remaining) [2023-08-30 04:26:42,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 104 remaining) [2023-08-30 04:26:42,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr14ASSERT_VIOLATIONMEMORY_LEAK (10 of 104 remaining) [2023-08-30 04:26:42,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 104 remaining) [2023-08-30 04:26:42,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 104 remaining) [2023-08-30 04:26:42,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 104 remaining) [2023-08-30 04:26:42,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 104 remaining) [2023-08-30 04:26:42,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 104 remaining) [2023-08-30 04:26:42,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 104 remaining) [2023-08-30 04:26:42,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 104 remaining) [2023-08-30 04:26:42,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 104 remaining) [2023-08-30 04:26:42,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 104 remaining) [2023-08-30 04:26:42,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 104 remaining) [2023-08-30 04:26:42,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 04:26:42,393 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:26:42,395 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 04:26:42,395 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 04:26:42,482 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-30 04:26:42,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 594 places, 665 transitions, 1420 flow [2023-08-30 04:26:44,236 INFO L130 PetriNetUnfolder]: 1130/6502 cut-off events. [2023-08-30 04:26:44,236 INFO L131 PetriNetUnfolder]: For 602/700 co-relation queries the response was YES. [2023-08-30 04:26:44,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7176 conditions, 6502 events. 1130/6502 cut-off events. For 602/700 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 63605 event pairs, 22 based on Foata normal form. 0/4752 useless extension candidates. Maximal degree in co-relation 4023. Up to 192 conditions per place. [2023-08-30 04:26:44,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 594 places, 665 transitions, 1420 flow [2023-08-30 04:26:44,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 594 places, 665 transitions, 1420 flow [2023-08-30 04:26:44,549 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 04:26:44,549 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 594 places, 665 transitions, 1420 flow [2023-08-30 04:26:44,550 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 594 places, 665 transitions, 1420 flow [2023-08-30 04:26:44,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 594 places, 665 transitions, 1420 flow [2023-08-30 04:26:45,963 INFO L130 PetriNetUnfolder]: 1130/6502 cut-off events. [2023-08-30 04:26:45,963 INFO L131 PetriNetUnfolder]: For 602/700 co-relation queries the response was YES. [2023-08-30 04:26:46,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7176 conditions, 6502 events. 1130/6502 cut-off events. For 602/700 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 63605 event pairs, 22 based on Foata normal form. 0/4752 useless extension candidates. Maximal degree in co-relation 4023. Up to 192 conditions per place. [2023-08-30 04:26:46,568 INFO L119 LiptonReduction]: Number of co-enabled transitions 272460 [2023-08-30 04:27:09,467 INFO L134 LiptonReduction]: Checked pairs total: 835580 [2023-08-30 04:27:09,468 INFO L136 LiptonReduction]: Total number of compositions: 536 [2023-08-30 04:27:09,470 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 04:27:09,470 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;@6c7b5fd2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 04:27:09,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 144 error locations. [2023-08-30 04:27:09,471 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 04:27:09,471 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:27:09,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:27:09,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 04:27:09,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 141 more)] === [2023-08-30 04:27:09,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:27:09,472 INFO L85 PathProgramCache]: Analyzing trace with hash 3071, now seen corresponding path program 1 times [2023-08-30 04:27:09,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:27:09,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047447152] [2023-08-30 04:27:09,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:27:09,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:27:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:27:09,478 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 04:27:09,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:27:09,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047447152] [2023-08-30 04:27:09,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047447152] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:27:09,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:27:09,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 04:27:09,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675955090] [2023-08-30 04:27:09,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:27:09,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 04:27:09,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:27:09,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 04:27:09,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 04:27:09,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 1201 [2023-08-30 04:27:09,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 302 transitions, 694 flow. Second operand has 2 states, 2 states have (on average 583.5) internal successors, (1167), 2 states have internal predecessors, (1167), 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 04:27:09,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:27:09,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 1201 [2023-08-30 04:27:09,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand