./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/04-mutex_02-simple_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/04-mutex_02-simple_nr.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 d425dfbbfb78faa29f27010b68bbdf8cfe9cd77f6a5b55b60367dae1036de9f1 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 00:04:23,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:04:23,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:04:23,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:04:23,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:04:23,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:04:23,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:04:23,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:04:23,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:04:23,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:04:23,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:04:23,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:04:23,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:04:23,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:04:23,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:04:23,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:04:23,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:04:23,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:04:23,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:04:23,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:04:23,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:04:23,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:04:23,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:04:23,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:04:23,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:04:23,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:04:23,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:04:23,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:04:23,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:04:23,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:04:23,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:04:23,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:04:23,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:04:23,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:04:23,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:04:23,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:04:23,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:04:23,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:04:23,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:04:23,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:04:23,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:04:23,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:04:23,407 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:04:23,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:04:23,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:04:23,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:04:23,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:04:23,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:04:23,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:04:23,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:04:23,411 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:04:23,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:04:23,412 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:04:23,412 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:04:23,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:04:23,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:04:23,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:04:23,413 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:04:23,413 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:04:23,413 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:04:23,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:04:23,414 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:04:23,414 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:04:23,414 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:04:23,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:04:23,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:04:23,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:04:23,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:04:23,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:04:23,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:04:23,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:04:23,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:04:23,416 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:04:23,416 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:04:23,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:04:23,417 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:04:23,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d425dfbbfb78faa29f27010b68bbdf8cfe9cd77f6a5b55b60367dae1036de9f1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:04:23,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:04:23,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:04:23,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:04:23,738 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:04:23,739 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:04:23,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_02-simple_nr.i [2023-09-01 00:04:24,841 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:04:25,096 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:04:25,097 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_02-simple_nr.i [2023-09-01 00:04:25,110 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ee3006f/2e2d39f005904a869847f5d42392497e/FLAG84a1a9bba [2023-09-01 00:04:25,123 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ee3006f/2e2d39f005904a869847f5d42392497e [2023-09-01 00:04:25,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:04:25,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:04:25,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:04:25,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:04:25,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:04:25,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:04:25" (1/1) ... [2023-09-01 00:04:25,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84346fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:04:25, skipping insertion in model container [2023-09-01 00:04:25,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:04:25" (1/1) ... [2023-09-01 00:04:25,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:04:25,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:04:25,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:04:25,536 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:04:25,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:04:25,619 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:04:25,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:04:25 WrapperNode [2023-09-01 00:04:25,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:04:25,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:04:25,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:04:25,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:04:25,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:04:25" (1/1) ... [2023-09-01 00:04:25,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:04:25" (1/1) ... [2023-09-01 00:04:25,657 INFO L138 Inliner]: procedures = 262, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2023-09-01 00:04:25,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:04:25,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:04:25,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:04:25,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:04:25,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:04:25" (1/1) ... [2023-09-01 00:04:25,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:04:25" (1/1) ... [2023-09-01 00:04:25,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:04:25" (1/1) ... [2023-09-01 00:04:25,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:04:25" (1/1) ... [2023-09-01 00:04:25,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:04:25" (1/1) ... [2023-09-01 00:04:25,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:04:25" (1/1) ... [2023-09-01 00:04:25,677 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:04:25" (1/1) ... [2023-09-01 00:04:25,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:04:25" (1/1) ... [2023-09-01 00:04:25,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:04:25,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:04:25,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:04:25,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:04:25,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:04:25" (1/1) ... [2023-09-01 00:04:25,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:04:25,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:04:25,731 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) [2023-09-01 00:04:25,757 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 [2023-09-01 00:04:25,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:04:25,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:04:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:04:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:04:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:04:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:04:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:04:25,769 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:04:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:04:25,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:04:25,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:04:25,771 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 00:04:25,958 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:04:25,960 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:04:26,115 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:04:26,120 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:04:26,120 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 00:04:26,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:04:26 BoogieIcfgContainer [2023-09-01 00:04:26,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:04:26,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:04:26,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:04:26,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:04:26,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:04:25" (1/3) ... [2023-09-01 00:04:26,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:04:26, skipping insertion in model container [2023-09-01 00:04:26,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:04:25" (2/3) ... [2023-09-01 00:04:26,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:04:26, skipping insertion in model container [2023-09-01 00:04:26,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:04:26" (3/3) ... [2023-09-01 00:04:26,128 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_02-simple_nr.i [2023-09-01 00:04:26,143 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:04:26,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-09-01 00:04:26,144 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:04:26,204 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:04:26,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 57 transitions, 122 flow [2023-09-01 00:04:26,310 INFO L130 PetriNetUnfolder]: 0/56 cut-off events. [2023-09-01 00:04:26,310 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:04:26,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 56 events. 0/56 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-09-01 00:04:26,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 57 transitions, 122 flow [2023-09-01 00:04:26,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 52 transitions, 110 flow [2023-09-01 00:04:26,321 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:04:26,340 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 52 transitions, 110 flow [2023-09-01 00:04:26,344 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 52 transitions, 110 flow [2023-09-01 00:04:26,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 52 transitions, 110 flow [2023-09-01 00:04:26,368 INFO L130 PetriNetUnfolder]: 0/52 cut-off events. [2023-09-01 00:04:26,368 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:04:26,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 52 events. 0/52 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-09-01 00:04:26,370 INFO L119 LiptonReduction]: Number of co-enabled transitions 126 [2023-09-01 00:04:28,199 INFO L134 LiptonReduction]: Checked pairs total: 450 [2023-09-01 00:04:28,200 INFO L136 LiptonReduction]: Total number of compositions: 48 [2023-09-01 00:04:28,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 00:04:28,227 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;@76c48ff8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:04:28,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-09-01 00:04:28,229 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 00:04:28,229 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:04:28,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:04:28,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 00:04:28,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-09-01 00:04:28,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:04:28,236 INFO L85 PathProgramCache]: Analyzing trace with hash 202, now seen corresponding path program 1 times [2023-09-01 00:04:28,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:04:28,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981277021] [2023-09-01 00:04:28,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:04:28,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:04:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:04:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:04:28,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:04:28,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981277021] [2023-09-01 00:04:28,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981277021] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:04:28,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:04:28,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 00:04:28,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411856141] [2023-09-01 00:04:28,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:04:28,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 00:04:28,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:04:28,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 00:04:28,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 00:04:28,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2023-09-01 00:04:28,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 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) [2023-09-01 00:04:28,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:04:28,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2023-09-01 00:04:28,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:04:28,451 INFO L130 PetriNetUnfolder]: 12/37 cut-off events. [2023-09-01 00:04:28,452 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:04:28,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 37 events. 12/37 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 103 event pairs, 12 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 64. Up to 36 conditions per place. [2023-09-01 00:04:28,454 INFO L137 encePairwiseOnDemand]: 103/105 looper letters, 11 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2023-09-01 00:04:28,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 12 transitions, 52 flow [2023-09-01 00:04:28,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 00:04:28,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 00:04:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 123 transitions. [2023-09-01 00:04:28,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2023-09-01 00:04:28,466 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 123 transitions. [2023-09-01 00:04:28,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 123 transitions. [2023-09-01 00:04:28,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:04:28,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 123 transitions. [2023-09-01 00:04:28,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 61.5) internal successors, (123), 2 states have internal predecessors, (123), 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) [2023-09-01 00:04:28,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2023-09-01 00:04:28,475 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2023-09-01 00:04:28,477 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 2 states and 123 transitions. [2023-09-01 00:04:28,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 12 transitions, 52 flow [2023-09-01 00:04:28,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 12 transitions, 48 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:04:28,483 INFO L231 Difference]: Finished difference. Result has 15 places, 12 transitions, 26 flow [2023-09-01 00:04:28,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=26, PETRI_PLACES=15, PETRI_TRANSITIONS=12} [2023-09-01 00:04:28,488 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -3 predicate places. [2023-09-01 00:04:28,488 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 12 transitions, 26 flow [2023-09-01 00:04:28,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 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) [2023-09-01 00:04:28,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:04:28,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 00:04:28,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:04:28,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-09-01 00:04:28,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:04:28,497 INFO L85 PathProgramCache]: Analyzing trace with hash 188493053, now seen corresponding path program 1 times [2023-09-01 00:04:28,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:04:28,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190210439] [2023-09-01 00:04:28,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:04:28,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:04:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:04:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:04:28,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:04:28,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190210439] [2023-09-01 00:04:28,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190210439] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:04:28,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:04:28,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:04:28,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007936166] [2023-09-01 00:04:28,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:04:28,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:04:28,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:04:28,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:04:28,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:04:28,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 105 [2023-09-01 00:04:28,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 12 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-09-01 00:04:28,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:04:28,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 105 [2023-09-01 00:04:28,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:04:28,744 INFO L130 PetriNetUnfolder]: 9/30 cut-off events. [2023-09-01 00:04:28,745 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:04:28,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 30 events. 9/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 70 event pairs, 9 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 59. Up to 27 conditions per place. [2023-09-01 00:04:28,746 INFO L137 encePairwiseOnDemand]: 102/105 looper letters, 8 selfloop transitions, 2 changer transitions 0/11 dead transitions. [2023-09-01 00:04:28,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 11 transitions, 44 flow [2023-09-01 00:04:28,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:04:28,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:04:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2023-09-01 00:04:28,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48253968253968255 [2023-09-01 00:04:28,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2023-09-01 00:04:28,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2023-09-01 00:04:28,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:04:28,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2023-09-01 00:04:28,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-09-01 00:04:28,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-09-01 00:04:28,760 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-09-01 00:04:28,760 INFO L175 Difference]: Start difference. First operand has 15 places, 12 transitions, 26 flow. Second operand 3 states and 152 transitions. [2023-09-01 00:04:28,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 11 transitions, 44 flow [2023-09-01 00:04:28,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 44 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 00:04:28,761 INFO L231 Difference]: Finished difference. Result has 16 places, 11 transitions, 28 flow [2023-09-01 00:04:28,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=28, PETRI_PLACES=16, PETRI_TRANSITIONS=11} [2023-09-01 00:04:28,763 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -2 predicate places. [2023-09-01 00:04:28,763 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 11 transitions, 28 flow [2023-09-01 00:04:28,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-09-01 00:04:28,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:04:28,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 00:04:28,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:04:28,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-09-01 00:04:28,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:04:28,765 INFO L85 PathProgramCache]: Analyzing trace with hash 188493054, now seen corresponding path program 1 times [2023-09-01 00:04:28,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:04:28,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231095450] [2023-09-01 00:04:28,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:04:28,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:04:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:04:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:04:28,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:04:28,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231095450] [2023-09-01 00:04:28,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231095450] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:04:28,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:04:28,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:04:28,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722515141] [2023-09-01 00:04:28,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:04:28,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:04:28,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:04:28,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:04:28,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:04:28,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 105 [2023-09-01 00:04:28,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 11 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-09-01 00:04:28,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:04:28,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 105 [2023-09-01 00:04:28,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:04:28,912 INFO L130 PetriNetUnfolder]: 6/23 cut-off events. [2023-09-01 00:04:28,913 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:04:28,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 23 events. 6/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 6 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 47. Up to 20 conditions per place. [2023-09-01 00:04:28,914 INFO L137 encePairwiseOnDemand]: 102/105 looper letters, 7 selfloop transitions, 2 changer transitions 0/10 dead transitions. [2023-09-01 00:04:28,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 10 transitions, 44 flow [2023-09-01 00:04:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:04:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:04:28,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2023-09-01 00:04:28,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2023-09-01 00:04:28,918 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 154 transitions. [2023-09-01 00:04:28,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 154 transitions. [2023-09-01 00:04:28,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:04:28,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 154 transitions. [2023-09-01 00:04:28,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-09-01 00:04:28,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-09-01 00:04:28,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-09-01 00:04:28,933 INFO L175 Difference]: Start difference. First operand has 16 places, 11 transitions, 28 flow. Second operand 3 states and 154 transitions. [2023-09-01 00:04:28,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 10 transitions, 44 flow [2023-09-01 00:04:28,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 10 transitions, 40 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:04:28,934 INFO L231 Difference]: Finished difference. Result has 15 places, 10 transitions, 26 flow [2023-09-01 00:04:28,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=15, PETRI_TRANSITIONS=10} [2023-09-01 00:04:28,936 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -3 predicate places. [2023-09-01 00:04:28,936 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 26 flow [2023-09-01 00:04:28,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-09-01 00:04:28,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:04:28,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:04:28,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:04:28,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-09-01 00:04:28,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:04:28,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1243340697, now seen corresponding path program 1 times [2023-09-01 00:04:28,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:04:28,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217994623] [2023-09-01 00:04:28,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:04:28,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:04:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:04:29,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:04:29,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:04:29,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217994623] [2023-09-01 00:04:29,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217994623] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:04:29,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:04:29,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:04:29,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766891638] [2023-09-01 00:04:29,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:04:29,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:04:29,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:04:29,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:04:29,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:04:29,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 105 [2023-09-01 00:04:29,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2023-09-01 00:04:29,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:04:29,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 105 [2023-09-01 00:04:29,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:04:29,134 INFO L130 PetriNetUnfolder]: 1/16 cut-off events. [2023-09-01 00:04:29,135 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:04:29,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 16 events. 1/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 1 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 33. Up to 9 conditions per place. [2023-09-01 00:04:29,135 INFO L137 encePairwiseOnDemand]: 101/105 looper letters, 5 selfloop transitions, 4 changer transitions 0/10 dead transitions. [2023-09-01 00:04:29,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 10 transitions, 44 flow [2023-09-01 00:04:29,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:04:29,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:04:29,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2023-09-01 00:04:29,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2023-09-01 00:04:29,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 161 transitions. [2023-09-01 00:04:29,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 161 transitions. [2023-09-01 00:04:29,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:04:29,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 161 transitions. [2023-09-01 00:04:29,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2023-09-01 00:04:29,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-09-01 00:04:29,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-09-01 00:04:29,140 INFO L175 Difference]: Start difference. First operand has 15 places, 10 transitions, 26 flow. Second operand 3 states and 161 transitions. [2023-09-01 00:04:29,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 10 transitions, 44 flow [2023-09-01 00:04:29,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 10 transitions, 40 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:04:29,141 INFO L231 Difference]: Finished difference. Result has 15 places, 10 transitions, 30 flow [2023-09-01 00:04:29,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=15, PETRI_TRANSITIONS=10} [2023-09-01 00:04:29,142 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -3 predicate places. [2023-09-01 00:04:29,142 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 30 flow [2023-09-01 00:04:29,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2023-09-01 00:04:29,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:04:29,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:04:29,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:04:29,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-09-01 00:04:29,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:04:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1990848677, now seen corresponding path program 2 times [2023-09-01 00:04:29,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:04:29,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734480122] [2023-09-01 00:04:29,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:04:29,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:04:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:04:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:04:29,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:04:29,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734480122] [2023-09-01 00:04:29,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734480122] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:04:29,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:04:29,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:04:29,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948143391] [2023-09-01 00:04:29,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:04:29,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:04:29,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:04:29,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:04:29,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:04:29,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 105 [2023-09-01 00:04:29,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2023-09-01 00:04:29,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:04:29,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 105 [2023-09-01 00:04:29,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:04:29,307 INFO L130 PetriNetUnfolder]: 1/15 cut-off events. [2023-09-01 00:04:29,307 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 00:04:29,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 15 events. 1/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 1 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 37. Up to 13 conditions per place. [2023-09-01 00:04:29,308 INFO L137 encePairwiseOnDemand]: 103/105 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2023-09-01 00:04:29,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 9 transitions, 44 flow [2023-09-01 00:04:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:04:29,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:04:29,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2023-09-01 00:04:29,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2023-09-01 00:04:29,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 162 transitions. [2023-09-01 00:04:29,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 162 transitions. [2023-09-01 00:04:29,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:04:29,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 162 transitions. [2023-09-01 00:04:29,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2023-09-01 00:04:29,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-09-01 00:04:29,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-09-01 00:04:29,325 INFO L175 Difference]: Start difference. First operand has 15 places, 10 transitions, 30 flow. Second operand 3 states and 162 transitions. [2023-09-01 00:04:29,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 9 transitions, 44 flow [2023-09-01 00:04:29,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 9 transitions, 40 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:04:29,325 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-09-01 00:04:29,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-09-01 00:04:29,326 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -3 predicate places. [2023-09-01 00:04:29,327 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-09-01 00:04:29,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2023-09-01 00:04:29,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-09-01 00:04:29,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-09-01 00:04:29,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-09-01 00:04:29,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-09-01 00:04:29,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-09-01 00:04:29,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-09-01 00:04:29,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:04:29,331 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-09-01 00:04:29,334 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 00:04:29,335 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 00:04:29,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 12:04:29 BasicIcfg [2023-09-01 00:04:29,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 00:04:29,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 00:04:29,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 00:04:29,339 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 00:04:29,339 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:04:26" (3/4) ... [2023-09-01 00:04:29,342 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 00:04:29,348 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-09-01 00:04:29,351 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-09-01 00:04:29,352 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 00:04:29,352 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 00:04:29,380 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 00:04:29,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 00:04:29,381 INFO L158 Benchmark]: Toolchain (without parser) took 4254.48ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 44.5MB in the beginning and 72.3MB in the end (delta: -27.8MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2023-09-01 00:04:29,381 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 34.3MB in the beginning and 34.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:04:29,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 492.97ms. Allocated memory is still 69.2MB. Free memory was 44.5MB in the beginning and 34.3MB in the end (delta: 10.2MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2023-09-01 00:04:29,382 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.49ms. Allocated memory is still 69.2MB. Free memory was 34.3MB in the beginning and 31.9MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 00:04:29,382 INFO L158 Benchmark]: Boogie Preprocessor took 21.77ms. Allocated memory is still 69.2MB. Free memory was 31.9MB in the beginning and 30.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:04:29,382 INFO L158 Benchmark]: RCFGBuilder took 440.71ms. Allocated memory is still 69.2MB. Free memory was 30.6MB in the beginning and 36.7MB in the end (delta: -6.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 00:04:29,383 INFO L158 Benchmark]: TraceAbstraction took 3214.71ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 36.0MB in the beginning and 74.4MB in the end (delta: -38.4MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2023-09-01 00:04:29,383 INFO L158 Benchmark]: Witness Printer took 41.43ms. Allocated memory is still 100.7MB. Free memory was 74.4MB in the beginning and 72.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 00:04:29,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 34.3MB in the beginning and 34.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 492.97ms. Allocated memory is still 69.2MB. Free memory was 44.5MB in the beginning and 34.3MB in the end (delta: 10.2MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.49ms. Allocated memory is still 69.2MB. Free memory was 34.3MB in the beginning and 31.9MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.77ms. Allocated memory is still 69.2MB. Free memory was 31.9MB in the beginning and 30.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 440.71ms. Allocated memory is still 69.2MB. Free memory was 30.6MB in the beginning and 36.7MB in the end (delta: -6.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3214.71ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 36.0MB in the beginning and 74.4MB in the end (delta: -38.4MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. * Witness Printer took 41.43ms. Allocated memory is still 100.7MB. Free memory was 74.4MB in the beginning and 72.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 56 PlacesBefore, 18 PlacesAfterwards, 52 TransitionsBefore, 14 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 48 TotalNumberOfCompositions, 450 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 237, independent: 148, independent conditional: 0, independent unconditional: 148, dependent: 89, dependent conditional: 0, dependent unconditional: 89, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 73, independent: 62, independent conditional: 0, independent unconditional: 62, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 237, independent: 86, independent conditional: 0, independent unconditional: 86, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 73, unknown conditional: 0, unknown unconditional: 73] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 926]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 67 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 132 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 138 IncrementalHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 16 mSDtfsCounter, 138 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 00:04:29,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE