./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.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 ef851e22a0a98929f1b90876fcac5ec793e10efa4691f239ca948c8dc39b94fd --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:50:31,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:50:31,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:50:31,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:50:31,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:50:31,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:50:31,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:50:31,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:50:31,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:50:31,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:50:31,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:50:31,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:50:31,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:50:31,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:50:31,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:50:31,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:50:31,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:50:31,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:50:31,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:50:31,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:50:31,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:50:31,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:50:31,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:50:31,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:50:31,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:50:31,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:50:31,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:50:31,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:50:31,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:50:31,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:50:31,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:50:31,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:50:31,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:50:31,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:50:31,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:50:31,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:50:31,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:50:31,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:50:31,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:50:31,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:50:31,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:50:31,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:50:31,359 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:50:31,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:50:31,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:50:31,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:50:31,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:50:31,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:50:31,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:50:31,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:50:31,363 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:50:31,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:50:31,364 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:50:31,364 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:50:31,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:50:31,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:50:31,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:50:31,365 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:50:31,366 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:50:31,366 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:50:31,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:50:31,366 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:50:31,366 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:50:31,367 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:50:31,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:50:31,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:50:31,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:50:31,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:50:31,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:50:31,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:50:31,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:50:31,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:50:31,369 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:50:31,369 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:50:31,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:50:31,370 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:50:31,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef851e22a0a98929f1b90876fcac5ec793e10efa4691f239ca948c8dc39b94fd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:50:31,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:50:31,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:50:31,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:50:31,737 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:50:31,738 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:50:31,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2023-08-29 20:50:32,808 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:50:33,057 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:50:33,057 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2023-08-29 20:50:33,074 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57b9a22ec/e330a627964d4118b421c05788a95846/FLAG06889dda6 [2023-08-29 20:50:33,087 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57b9a22ec/e330a627964d4118b421c05788a95846 [2023-08-29 20:50:33,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:50:33,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:50:33,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:50:33,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:50:33,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:50:33,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:50:33" (1/1) ... [2023-08-29 20:50:33,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c6e0791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:33, skipping insertion in model container [2023-08-29 20:50:33,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:50:33" (1/1) ... [2023-08-29 20:50:33,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:50:33,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:50:33,324 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i[945,958] [2023-08-29 20:50:33,496 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:50:33,505 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:50:33,518 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i[945,958] [2023-08-29 20:50:33,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:50:33,599 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:50:33,599 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:50:33,605 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:50:33,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:33 WrapperNode [2023-08-29 20:50:33,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:50:33,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:50:33,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:50:33,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:50:33,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:33" (1/1) ... [2023-08-29 20:50:33,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:33" (1/1) ... [2023-08-29 20:50:33,662 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2023-08-29 20:50:33,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:50:33,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:50:33,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:50:33,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:50:33,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:33" (1/1) ... [2023-08-29 20:50:33,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:33" (1/1) ... [2023-08-29 20:50:33,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:33" (1/1) ... [2023-08-29 20:50:33,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:33" (1/1) ... [2023-08-29 20:50:33,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:33" (1/1) ... [2023-08-29 20:50:33,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:33" (1/1) ... [2023-08-29 20:50:33,698 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:33" (1/1) ... [2023-08-29 20:50:33,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:33" (1/1) ... [2023-08-29 20:50:33,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:50:33,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:50:33,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:50:33,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:50:33,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:33" (1/1) ... [2023-08-29 20:50:33,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:50:33,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:50:33,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 20:50:33,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 20:50:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:50:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:50:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:50:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:50:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:50:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-29 20:50:33,787 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-29 20:50:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-29 20:50:33,787 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-29 20:50:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:50:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:50:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:50:33,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:50:33,790 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:50:33,970 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:50:33,972 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:50:34,102 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:50:34,109 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:50:34,109 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:50:34,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:50:34 BoogieIcfgContainer [2023-08-29 20:50:34,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:50:34,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:50:34,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:50:34,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:50:34,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:50:33" (1/3) ... [2023-08-29 20:50:34,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57781de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:50:34, skipping insertion in model container [2023-08-29 20:50:34,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:33" (2/3) ... [2023-08-29 20:50:34,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57781de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:50:34, skipping insertion in model container [2023-08-29 20:50:34,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:50:34" (3/3) ... [2023-08-29 20:50:34,119 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2023-08-29 20:50:34,133 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:50:34,134 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-29 20:50:34,134 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:50:34,224 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:50:34,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 74 transitions, 158 flow [2023-08-29 20:50:34,291 INFO L130 PetriNetUnfolder]: 2/72 cut-off events. [2023-08-29 20:50:34,292 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:50:34,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-29 20:50:34,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 74 transitions, 158 flow [2023-08-29 20:50:34,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 68 transitions, 142 flow [2023-08-29 20:50:34,302 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:50:34,309 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 68 transitions, 142 flow [2023-08-29 20:50:34,311 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 68 transitions, 142 flow [2023-08-29 20:50:34,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 142 flow [2023-08-29 20:50:34,327 INFO L130 PetriNetUnfolder]: 2/68 cut-off events. [2023-08-29 20:50:34,327 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:50:34,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-08-29 20:50:34,328 INFO L119 LiptonReduction]: Number of co-enabled transitions 780 [2023-08-29 20:50:36,302 INFO L134 LiptonReduction]: Checked pairs total: 1510 [2023-08-29 20:50:36,305 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-08-29 20:50:36,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:50:36,332 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;@211ef2a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:50:36,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-29 20:50:36,335 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 20:50:36,335 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:50:36,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:36,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:50:36,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:50:36,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:36,344 INFO L85 PathProgramCache]: Analyzing trace with hash 271, now seen corresponding path program 1 times [2023-08-29 20:50:36,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:36,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861824574] [2023-08-29 20:50:36,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:36,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:50:36,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:36,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861824574] [2023-08-29 20:50:36,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861824574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:36,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:36,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:50:36,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070020046] [2023-08-29 20:50:36,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:36,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:50:36,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:36,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:50:36,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:50:36,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 144 [2023-08-29 20:50:36,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 44 flow. Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:36,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:36,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 144 [2023-08-29 20:50:36,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:36,566 INFO L130 PetriNetUnfolder]: 56/113 cut-off events. [2023-08-29 20:50:36,566 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 20:50:36,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 113 events. 56/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 405 event pairs, 56 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 223. Up to 109 conditions per place. [2023-08-29 20:50:36,569 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 12 selfloop transitions, 0 changer transitions 0/14 dead transitions. [2023-08-29 20:50:36,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 58 flow [2023-08-29 20:50:36,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:50:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:50:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 155 transitions. [2023-08-29 20:50:36,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381944444444444 [2023-08-29 20:50:36,583 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 155 transitions. [2023-08-29 20:50:36,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 155 transitions. [2023-08-29 20:50:36,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:36,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 155 transitions. [2023-08-29 20:50:36,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:36,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:36,626 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:36,628 INFO L175 Difference]: Start difference. First operand has 25 places, 19 transitions, 44 flow. Second operand 2 states and 155 transitions. [2023-08-29 20:50:36,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 58 flow [2023-08-29 20:50:36,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:50:36,631 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 32 flow [2023-08-29 20:50:36,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-29 20:50:36,637 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -5 predicate places. [2023-08-29 20:50:36,637 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 32 flow [2023-08-29 20:50:36,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:36,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:36,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:36,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:50:36,639 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:50:36,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:36,639 INFO L85 PathProgramCache]: Analyzing trace with hash -137552195, now seen corresponding path program 1 times [2023-08-29 20:50:36,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:36,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515081337] [2023-08-29 20:50:36,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:36,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:50:37,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:37,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515081337] [2023-08-29 20:50:37,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515081337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:37,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:37,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:50:37,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686503869] [2023-08-29 20:50:37,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:37,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:50:37,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:37,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:50:37,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:50:37,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 144 [2023-08-29 20:50:37,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 32 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:37,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:37,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 144 [2023-08-29 20:50:37,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:37,150 INFO L130 PetriNetUnfolder]: 44/90 cut-off events. [2023-08-29 20:50:37,151 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:50:37,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 90 events. 44/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 280 event pairs, 30 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 185. Up to 83 conditions per place. [2023-08-29 20:50:37,152 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 11 selfloop transitions, 2 changer transitions 0/15 dead transitions. [2023-08-29 20:50:37,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 15 transitions, 60 flow [2023-08-29 20:50:37,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:50:37,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:50:37,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 246 transitions. [2023-08-29 20:50:37,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2023-08-29 20:50:37,159 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 246 transitions. [2023-08-29 20:50:37,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 246 transitions. [2023-08-29 20:50:37,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:37,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 246 transitions. [2023-08-29 20:50:37,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:37,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:37,167 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:37,167 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 32 flow. Second operand 4 states and 246 transitions. [2023-08-29 20:50:37,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 15 transitions, 60 flow [2023-08-29 20:50:37,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 60 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:50:37,168 INFO L231 Difference]: Finished difference. Result has 22 places, 13 transitions, 34 flow [2023-08-29 20:50:37,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=34, PETRI_PLACES=22, PETRI_TRANSITIONS=13} [2023-08-29 20:50:37,170 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -3 predicate places. [2023-08-29 20:50:37,170 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 13 transitions, 34 flow [2023-08-29 20:50:37,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:37,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:37,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:37,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:50:37,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:50:37,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:37,172 INFO L85 PathProgramCache]: Analyzing trace with hash -137552208, now seen corresponding path program 1 times [2023-08-29 20:50:37,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:37,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289746755] [2023-08-29 20:50:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:37,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:50:37,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:37,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289746755] [2023-08-29 20:50:37,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289746755] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:37,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:37,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:50:37,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773773130] [2023-08-29 20:50:37,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:37,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:50:37,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:37,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:50:37,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:50:37,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 20:50:37,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 13 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:37,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:37,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 20:50:37,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:37,512 INFO L130 PetriNetUnfolder]: 114/221 cut-off events. [2023-08-29 20:50:37,512 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 20:50:37,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 221 events. 114/221 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 879 event pairs, 42 based on Foata normal form. 20/241 useless extension candidates. Maximal degree in co-relation 457. Up to 117 conditions per place. [2023-08-29 20:50:37,514 INFO L137 encePairwiseOnDemand]: 137/144 looper letters, 18 selfloop transitions, 5 changer transitions 13/36 dead transitions. [2023-08-29 20:50:37,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 36 transitions, 156 flow [2023-08-29 20:50:37,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:50:37,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:50:37,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 343 transitions. [2023-08-29 20:50:37,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47638888888888886 [2023-08-29 20:50:37,516 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 343 transitions. [2023-08-29 20:50:37,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 343 transitions. [2023-08-29 20:50:37,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:37,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 343 transitions. [2023-08-29 20:50:37,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:37,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:37,520 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:37,520 INFO L175 Difference]: Start difference. First operand has 22 places, 13 transitions, 34 flow. Second operand 5 states and 343 transitions. [2023-08-29 20:50:37,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 36 transitions, 156 flow [2023-08-29 20:50:37,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 36 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:50:37,522 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 81 flow [2023-08-29 20:50:37,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=81, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-08-29 20:50:37,522 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-08-29 20:50:37,523 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 81 flow [2023-08-29 20:50:37,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:37,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:37,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:37,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:50:37,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:50:37,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:37,524 INFO L85 PathProgramCache]: Analyzing trace with hash 30834971, now seen corresponding path program 1 times [2023-08-29 20:50:37,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:37,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827925992] [2023-08-29 20:50:37,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:37,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:37,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:50:37,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:37,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827925992] [2023-08-29 20:50:37,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827925992] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:37,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:37,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:50:37,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631594106] [2023-08-29 20:50:37,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:37,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:50:37,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:37,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:50:37,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:50:37,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 144 [2023-08-29 20:50:37,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:37,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:37,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 144 [2023-08-29 20:50:37,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:37,751 INFO L130 PetriNetUnfolder]: 74/167 cut-off events. [2023-08-29 20:50:37,751 INFO L131 PetriNetUnfolder]: For 161/165 co-relation queries the response was YES. [2023-08-29 20:50:37,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 167 events. 74/167 cut-off events. For 161/165 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 659 event pairs, 27 based on Foata normal form. 15/182 useless extension candidates. Maximal degree in co-relation 512. Up to 120 conditions per place. [2023-08-29 20:50:37,754 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 17 selfloop transitions, 4 changer transitions 8/31 dead transitions. [2023-08-29 20:50:37,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 204 flow [2023-08-29 20:50:37,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:50:37,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:50:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 347 transitions. [2023-08-29 20:50:37,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48194444444444445 [2023-08-29 20:50:37,756 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 347 transitions. [2023-08-29 20:50:37,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 347 transitions. [2023-08-29 20:50:37,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:37,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 347 transitions. [2023-08-29 20:50:37,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:37,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:37,759 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:37,759 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 81 flow. Second operand 5 states and 347 transitions. [2023-08-29 20:50:37,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 204 flow [2023-08-29 20:50:37,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 178 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-29 20:50:37,762 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 101 flow [2023-08-29 20:50:37,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-08-29 20:50:37,763 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2023-08-29 20:50:37,763 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 101 flow [2023-08-29 20:50:37,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:37,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:37,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:37,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:50:37,764 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:50:37,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:37,765 INFO L85 PathProgramCache]: Analyzing trace with hash 30827283, now seen corresponding path program 1 times [2023-08-29 20:50:37,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:37,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302599480] [2023-08-29 20:50:37,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:37,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:37,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:50:37,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:37,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302599480] [2023-08-29 20:50:37,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302599480] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:37,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:37,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:50:37,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621822077] [2023-08-29 20:50:37,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:37,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:50:37,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:37,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:50:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:50:37,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 20:50:37,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:37,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:37,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 20:50:37,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:37,993 INFO L130 PetriNetUnfolder]: 82/171 cut-off events. [2023-08-29 20:50:37,993 INFO L131 PetriNetUnfolder]: For 317/317 co-relation queries the response was YES. [2023-08-29 20:50:37,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 171 events. 82/171 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 606 event pairs, 11 based on Foata normal form. 14/185 useless extension candidates. Maximal degree in co-relation 571. Up to 100 conditions per place. [2023-08-29 20:50:37,997 INFO L137 encePairwiseOnDemand]: 137/144 looper letters, 21 selfloop transitions, 9 changer transitions 11/41 dead transitions. [2023-08-29 20:50:37,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 273 flow [2023-08-29 20:50:37,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:50:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:50:37,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 469 transitions. [2023-08-29 20:50:38,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2023-08-29 20:50:38,000 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 469 transitions. [2023-08-29 20:50:38,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 469 transitions. [2023-08-29 20:50:38,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:38,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 469 transitions. [2023-08-29 20:50:38,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:38,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:38,004 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:38,004 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 101 flow. Second operand 7 states and 469 transitions. [2023-08-29 20:50:38,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 273 flow [2023-08-29 20:50:38,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 261 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-29 20:50:38,008 INFO L231 Difference]: Finished difference. Result has 37 places, 21 transitions, 131 flow [2023-08-29 20:50:38,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=37, PETRI_TRANSITIONS=21} [2023-08-29 20:50:38,011 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2023-08-29 20:50:38,011 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 21 transitions, 131 flow [2023-08-29 20:50:38,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:38,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:38,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:38,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:50:38,012 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:50:38,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:38,012 INFO L85 PathProgramCache]: Analyzing trace with hash 955862536, now seen corresponding path program 1 times [2023-08-29 20:50:38,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:38,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202996980] [2023-08-29 20:50:38,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:38,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:50:38,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:38,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202996980] [2023-08-29 20:50:38,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202996980] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:38,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:38,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:50:38,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406566578] [2023-08-29 20:50:38,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:38,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:50:38,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:38,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:50:38,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:50:38,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 144 [2023-08-29 20:50:38,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 21 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:38,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:38,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 144 [2023-08-29 20:50:38,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:38,233 INFO L130 PetriNetUnfolder]: 19/63 cut-off events. [2023-08-29 20:50:38,233 INFO L131 PetriNetUnfolder]: For 124/126 co-relation queries the response was YES. [2023-08-29 20:50:38,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 63 events. 19/63 cut-off events. For 124/126 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 174 event pairs, 5 based on Foata normal form. 7/69 useless extension candidates. Maximal degree in co-relation 224. Up to 38 conditions per place. [2023-08-29 20:50:38,234 INFO L137 encePairwiseOnDemand]: 140/144 looper letters, 16 selfloop transitions, 3 changer transitions 4/27 dead transitions. [2023-08-29 20:50:38,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 198 flow [2023-08-29 20:50:38,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:50:38,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:50:38,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2023-08-29 20:50:38,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-29 20:50:38,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2023-08-29 20:50:38,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2023-08-29 20:50:38,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:38,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2023-08-29 20:50:38,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:38,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:38,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:38,238 INFO L175 Difference]: Start difference. First operand has 37 places, 21 transitions, 131 flow. Second operand 3 states and 216 transitions. [2023-08-29 20:50:38,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 198 flow [2023-08-29 20:50:38,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 178 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-29 20:50:38,242 INFO L231 Difference]: Finished difference. Result has 32 places, 19 transitions, 108 flow [2023-08-29 20:50:38,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=32, PETRI_TRANSITIONS=19} [2023-08-29 20:50:38,245 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-08-29 20:50:38,245 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 19 transitions, 108 flow [2023-08-29 20:50:38,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:38,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:38,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:38,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:50:38,247 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:50:38,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:38,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1702259186, now seen corresponding path program 1 times [2023-08-29 20:50:38,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:38,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417890827] [2023-08-29 20:50:38,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:38,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:50:38,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:38,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417890827] [2023-08-29 20:50:38,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417890827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:38,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:38,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:50:38,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104645914] [2023-08-29 20:50:38,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:38,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:50:38,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:38,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:50:38,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:50:38,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 144 [2023-08-29 20:50:38,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 19 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:38,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:38,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 144 [2023-08-29 20:50:38,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:38,446 INFO L130 PetriNetUnfolder]: 8/31 cut-off events. [2023-08-29 20:50:38,446 INFO L131 PetriNetUnfolder]: For 25/28 co-relation queries the response was YES. [2023-08-29 20:50:38,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 31 events. 8/31 cut-off events. For 25/28 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 2 based on Foata normal form. 7/37 useless extension candidates. Maximal degree in co-relation 119. Up to 12 conditions per place. [2023-08-29 20:50:38,446 INFO L137 encePairwiseOnDemand]: 140/144 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-08-29 20:50:38,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 21 transitions, 151 flow [2023-08-29 20:50:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:50:38,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:50:38,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2023-08-29 20:50:38,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2023-08-29 20:50:38,448 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2023-08-29 20:50:38,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2023-08-29 20:50:38,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:38,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2023-08-29 20:50:38,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:38,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:38,450 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:38,450 INFO L175 Difference]: Start difference. First operand has 32 places, 19 transitions, 108 flow. Second operand 4 states and 280 transitions. [2023-08-29 20:50:38,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 21 transitions, 151 flow [2023-08-29 20:50:38,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 21 transitions, 135 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-29 20:50:38,451 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-29 20:50:38,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-29 20:50:38,452 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2023-08-29 20:50:38,452 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-29 20:50:38,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:38,455 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2023-08-29 20:50:38,455 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-08-29 20:50:38,455 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-08-29 20:50:38,455 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-08-29 20:50:38,455 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2023-08-29 20:50:38,456 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-08-29 20:50:38,456 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-29 20:50:38,456 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-29 20:50:38,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:50:38,456 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:38,459 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:50:38,459 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:50:38,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:50:38 BasicIcfg [2023-08-29 20:50:38,462 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:50:38,462 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:50:38,463 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:50:38,463 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:50:38,463 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:50:34" (3/4) ... [2023-08-29 20:50:38,465 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 20:50:38,470 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-29 20:50:38,470 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-29 20:50:38,474 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-29 20:50:38,474 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 20:50:38,474 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 20:50:38,474 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 20:50:38,510 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 20:50:38,510 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:50:38,510 INFO L158 Benchmark]: Toolchain (without parser) took 5419.68ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 64.3MB in the beginning and 39.6MB in the end (delta: 24.6MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. [2023-08-29 20:50:38,511 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:50:38,511 INFO L158 Benchmark]: CACSL2BoogieTranslator took 514.13ms. Allocated memory is still 90.2MB. Free memory was 64.3MB in the beginning and 64.1MB in the end (delta: 200.1kB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2023-08-29 20:50:38,511 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.00ms. Allocated memory is still 90.2MB. Free memory was 64.1MB in the beginning and 62.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:50:38,511 INFO L158 Benchmark]: Boogie Preprocessor took 41.85ms. Allocated memory is still 90.2MB. Free memory was 62.5MB in the beginning and 60.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:50:38,511 INFO L158 Benchmark]: RCFGBuilder took 405.26ms. Allocated memory is still 90.2MB. Free memory was 60.9MB in the beginning and 47.8MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-29 20:50:38,512 INFO L158 Benchmark]: TraceAbstraction took 4348.84ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 47.3MB in the beginning and 42.8MB in the end (delta: 4.5MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2023-08-29 20:50:38,512 INFO L158 Benchmark]: Witness Printer took 47.38ms. Allocated memory is still 115.3MB. Free memory was 42.8MB in the beginning and 39.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:50:38,514 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 514.13ms. Allocated memory is still 90.2MB. Free memory was 64.3MB in the beginning and 64.1MB in the end (delta: 200.1kB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.00ms. Allocated memory is still 90.2MB. Free memory was 64.1MB in the beginning and 62.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.85ms. Allocated memory is still 90.2MB. Free memory was 62.5MB in the beginning and 60.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 405.26ms. Allocated memory is still 90.2MB. Free memory was 60.9MB in the beginning and 47.8MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4348.84ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 47.3MB in the beginning and 42.8MB in the end (delta: 4.5MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. * Witness Printer took 47.38ms. Allocated memory is still 115.3MB. Free memory was 42.8MB in the beginning and 39.6MB in the end (delta: 3.1MB). 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: 2.0s, 73 PlacesBefore, 25 PlacesAfterwards, 68 TransitionsBefore, 19 TransitionsAfterwards, 780 CoEnabledTransitionPairs, 5 FixpointIterations, 24 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 70 TotalNumberOfCompositions, 1510 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 688, independent: 630, independent conditional: 0, independent unconditional: 630, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 422, independent: 403, independent conditional: 0, independent unconditional: 403, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 688, independent: 227, independent conditional: 0, independent unconditional: 227, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 422, unknown conditional: 0, unknown unconditional: 422] , Statistics on independence cache: Total cache size (in pairs): 23, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 754]: 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 5 procedures, 89 locations, 8 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: 4.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 90 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 358 IncrementalHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 27 mSDtfsCounter, 358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=5, InterpolantAutomatonStates: 30, 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, 1.0s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 269 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 20:50:38,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE