./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi002_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 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:00:14,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:00:14,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:00:14,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:00:14,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:00:14,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:00:14,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:00:14,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:00:14,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:00:14,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:00:14,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:00:14,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:00:14,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:00:14,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:00:14,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:00:14,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:00:14,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:00:14,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:00:14,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:00:14,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:00:14,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:00:14,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:00:14,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:00:14,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:00:14,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:00:14,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:00:14,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:00:14,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:00:14,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:00:14,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:00:14,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:00:14,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:00:14,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:00:14,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:00:14,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:00:14,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:00:14,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:00:14,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:00:14,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:00:14,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:00:14,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:00:14,553 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:00:14,578 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:00:14,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:00:14,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:00:14,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:00:14,581 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:00:14,581 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:00:14,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:00:14,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:00:14,581 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:00:14,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:00:14,582 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:00:14,582 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:00:14,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:00:14,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:00:14,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:00:14,583 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:00:14,583 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:00:14,583 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:00:14,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:00:14,584 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:00:14,584 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:00:14,584 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:00:14,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:00:14,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:00:14,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:00:14,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:00:14,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:00:14,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:00:14,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:00:14,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:00:14,585 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:00:14,585 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:00:14,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:00:14,586 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:00:14,586 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:00:14,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:00:14,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:00:14,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:00:14,857 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:00:14,857 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:00:14,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-08-30 03:00:15,851 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:00:16,067 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:00:16,067 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-08-30 03:00:16,080 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69e5f0d19/9118007993c74ddb9642988e97a9e3d8/FLAGf00667e4e [2023-08-30 03:00:16,089 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69e5f0d19/9118007993c74ddb9642988e97a9e3d8 [2023-08-30 03:00:16,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:00:16,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:00:16,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:00:16,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:00:16,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:00:16,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:00:16" (1/1) ... [2023-08-30 03:00:16,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ff96aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:16, skipping insertion in model container [2023-08-30 03:00:16,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:00:16" (1/1) ... [2023-08-30 03:00:16,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:00:16,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:00:16,243 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/rfi002_tso.i[987,1000] [2023-08-30 03:00:16,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:00:16,443 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:00:16,454 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/rfi002_tso.i[987,1000] [2023-08-30 03:00:16,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:00:16,552 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:00:16,553 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:00:16,557 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:00:16,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:16 WrapperNode [2023-08-30 03:00:16,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:00:16,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:00:16,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:00:16,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:00:16,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:16" (1/1) ... [2023-08-30 03:00:16,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:16" (1/1) ... [2023-08-30 03:00:16,623 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 209 [2023-08-30 03:00:16,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:00:16,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:00:16,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:00:16,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:00:16,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:16" (1/1) ... [2023-08-30 03:00:16,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:16" (1/1) ... [2023-08-30 03:00:16,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:16" (1/1) ... [2023-08-30 03:00:16,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:16" (1/1) ... [2023-08-30 03:00:16,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:16" (1/1) ... [2023-08-30 03:00:16,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:16" (1/1) ... [2023-08-30 03:00:16,653 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:16" (1/1) ... [2023-08-30 03:00:16,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:16" (1/1) ... [2023-08-30 03:00:16,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:00:16,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:00:16,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:00:16,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:00:16,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:16" (1/1) ... [2023-08-30 03:00:16,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:00:16,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:00:16,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 03:00:16,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 03:00:16,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 03:00:16,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 03:00:16,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:00:16,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:00:16,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:00:16,735 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 03:00:16,735 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 03:00:16,736 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 03:00:16,736 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 03:00:16,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 03:00:16,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 03:00:16,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:00:16,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:00:16,737 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 03:00:16,859 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:00:16,874 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:00:17,199 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:00:17,360 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:00:17,360 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 03:00:17,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:00:17 BoogieIcfgContainer [2023-08-30 03:00:17,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:00:17,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:00:17,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:00:17,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:00:17,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:00:16" (1/3) ... [2023-08-30 03:00:17,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b23b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:00:17, skipping insertion in model container [2023-08-30 03:00:17,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:00:16" (2/3) ... [2023-08-30 03:00:17,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b23b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:00:17, skipping insertion in model container [2023-08-30 03:00:17,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:00:17" (3/3) ... [2023-08-30 03:00:17,367 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2023-08-30 03:00:17,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:00:17,380 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 03:00:17,380 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:00:17,420 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 03:00:17,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 115 transitions, 240 flow [2023-08-30 03:00:17,494 INFO L130 PetriNetUnfolder]: 2/113 cut-off events. [2023-08-30 03:00:17,494 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:00:17,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 113 events. 2/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-08-30 03:00:17,499 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 115 transitions, 240 flow [2023-08-30 03:00:17,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 113 transitions, 232 flow [2023-08-30 03:00:17,508 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:00:17,520 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 113 transitions, 232 flow [2023-08-30 03:00:17,522 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 113 transitions, 232 flow [2023-08-30 03:00:17,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 113 transitions, 232 flow [2023-08-30 03:00:17,542 INFO L130 PetriNetUnfolder]: 2/113 cut-off events. [2023-08-30 03:00:17,543 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:00:17,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 113 events. 2/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-08-30 03:00:17,544 INFO L119 LiptonReduction]: Number of co-enabled transitions 1460 [2023-08-30 03:00:22,392 INFO L134 LiptonReduction]: Checked pairs total: 4743 [2023-08-30 03:00:22,393 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-08-30 03:00:22,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:00:22,406 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;@1f9e5bf1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:00:22,406 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 03:00:22,407 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 03:00:22,407 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:00:22,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:22,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 03:00:22,408 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:22,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:22,411 INFO L85 PathProgramCache]: Analyzing trace with hash 664, now seen corresponding path program 1 times [2023-08-30 03:00:22,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:22,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458307705] [2023-08-30 03:00:22,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:22,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:22,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:22,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458307705] [2023-08-30 03:00:22,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458307705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:22,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:22,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 03:00:22,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797310517] [2023-08-30 03:00:22,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:22,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 03:00:22,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:22,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 03:00:22,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 03:00:22,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 229 [2023-08-30 03:00:22,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 58 flow. Second operand has 2 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:22,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:22,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 229 [2023-08-30 03:00:22,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:22,777 INFO L130 PetriNetUnfolder]: 515/852 cut-off events. [2023-08-30 03:00:22,777 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 03:00:22,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1722 conditions, 852 events. 515/852 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3506 event pairs, 515 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 1712. Up to 853 conditions per place. [2023-08-30 03:00:22,786 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 22 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2023-08-30 03:00:22,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 94 flow [2023-08-30 03:00:22,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 03:00:22,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 03:00:22,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 222 transitions. [2023-08-30 03:00:22,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847161572052402 [2023-08-30 03:00:22,796 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 222 transitions. [2023-08-30 03:00:22,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 222 transitions. [2023-08-30 03:00:22,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:22,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 222 transitions. [2023-08-30 03:00:22,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:22,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:22,803 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:22,804 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 58 flow. Second operand 2 states and 222 transitions. [2023-08-30 03:00:22,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 94 flow [2023-08-30 03:00:22,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:00:22,807 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 48 flow [2023-08-30 03:00:22,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=48, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-30 03:00:22,811 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-08-30 03:00:22,811 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 48 flow [2023-08-30 03:00:22,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:22,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:22,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 03:00:22,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 03:00:22,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:22,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:22,812 INFO L85 PathProgramCache]: Analyzing trace with hash 631124598, now seen corresponding path program 1 times [2023-08-30 03:00:22,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:22,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162388878] [2023-08-30 03:00:22,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:22,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:23,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:23,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162388878] [2023-08-30 03:00:23,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162388878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:23,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:23,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:00:23,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852542973] [2023-08-30 03:00:23,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:23,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:00:23,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:23,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:00:23,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:00:23,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 229 [2023-08-30 03:00:23,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:23,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:23,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 229 [2023-08-30 03:00:23,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:23,187 INFO L130 PetriNetUnfolder]: 455/756 cut-off events. [2023-08-30 03:00:23,188 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:00:23,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 756 events. 455/756 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3247 event pairs, 35 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 1526. Up to 673 conditions per place. [2023-08-30 03:00:23,190 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 29 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-30 03:00:23,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 128 flow [2023-08-30 03:00:23,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:00:23,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:00:23,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-08-30 03:00:23,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47016011644832606 [2023-08-30 03:00:23,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-08-30 03:00:23,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-08-30 03:00:23,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:23,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-08-30 03:00:23,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:23,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:23,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:23,197 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 48 flow. Second operand 3 states and 323 transitions. [2023-08-30 03:00:23,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 128 flow [2023-08-30 03:00:23,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:00:23,198 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 50 flow [2023-08-30 03:00:23,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-08-30 03:00:23,198 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-08-30 03:00:23,199 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 50 flow [2023-08-30 03:00:23,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:23,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:23,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:00:23,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 03:00:23,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:23,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:23,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1909973401, now seen corresponding path program 1 times [2023-08-30 03:00:23,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:23,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637617332] [2023-08-30 03:00:23,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:23,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:23,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:23,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637617332] [2023-08-30 03:00:23,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637617332] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:23,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:23,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:00:23,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6188138] [2023-08-30 03:00:23,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:23,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:00:23,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:23,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:00:23,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:00:23,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 229 [2023-08-30 03:00:23,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:23,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:23,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 229 [2023-08-30 03:00:23,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:23,483 INFO L130 PetriNetUnfolder]: 395/660 cut-off events. [2023-08-30 03:00:23,484 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-08-30 03:00:23,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 660 events. 395/660 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2606 event pairs, 95 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 1371. Up to 481 conditions per place. [2023-08-30 03:00:23,486 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 26 selfloop transitions, 2 changer transitions 2/30 dead transitions. [2023-08-30 03:00:23,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 128 flow [2023-08-30 03:00:23,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:00:23,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:00:23,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-08-30 03:00:23,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46870451237263466 [2023-08-30 03:00:23,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-08-30 03:00:23,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-08-30 03:00:23,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:23,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-08-30 03:00:23,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:23,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:23,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:23,492 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 50 flow. Second operand 3 states and 322 transitions. [2023-08-30 03:00:23,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 128 flow [2023-08-30 03:00:23,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:00:23,493 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 46 flow [2023-08-30 03:00:23,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2023-08-30 03:00:23,494 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-08-30 03:00:23,494 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 46 flow [2023-08-30 03:00:23,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:23,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:23,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:00:23,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 03:00:23,495 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:23,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:23,496 INFO L85 PathProgramCache]: Analyzing trace with hash 920443590, now seen corresponding path program 1 times [2023-08-30 03:00:23,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:23,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124212496] [2023-08-30 03:00:23,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:23,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:24,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:24,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124212496] [2023-08-30 03:00:24,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124212496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:24,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:24,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:00:24,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498481088] [2023-08-30 03:00:24,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:24,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:00:24,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:24,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:00:24,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:00:24,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 229 [2023-08-30 03:00:24,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:24,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:24,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 229 [2023-08-30 03:00:24,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:24,351 INFO L130 PetriNetUnfolder]: 305/534 cut-off events. [2023-08-30 03:00:24,352 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 03:00:24,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 534 events. 305/534 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2049 event pairs, 119 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 1107. Up to 311 conditions per place. [2023-08-30 03:00:24,357 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 27 selfloop transitions, 8 changer transitions 0/35 dead transitions. [2023-08-30 03:00:24,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 148 flow [2023-08-30 03:00:24,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:00:24,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:00:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 400 transitions. [2023-08-30 03:00:24,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366812227074236 [2023-08-30 03:00:24,360 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 400 transitions. [2023-08-30 03:00:24,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 400 transitions. [2023-08-30 03:00:24,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:24,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 400 transitions. [2023-08-30 03:00:24,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:24,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:24,369 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:24,369 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 46 flow. Second operand 4 states and 400 transitions. [2023-08-30 03:00:24,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 148 flow [2023-08-30 03:00:24,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:00:24,371 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 100 flow [2023-08-30 03:00:24,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-08-30 03:00:24,373 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-08-30 03:00:24,373 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 100 flow [2023-08-30 03:00:24,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:24,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:24,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:00:24,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 03:00:24,374 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:24,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:24,375 INFO L85 PathProgramCache]: Analyzing trace with hash 920443601, now seen corresponding path program 1 times [2023-08-30 03:00:24,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:24,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767846061] [2023-08-30 03:00:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:24,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:24,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:24,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767846061] [2023-08-30 03:00:24,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767846061] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:24,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:24,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:00:24,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11010357] [2023-08-30 03:00:24,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:24,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:00:24,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:24,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:00:24,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:00:24,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 229 [2023-08-30 03:00:24,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:24,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:24,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 229 [2023-08-30 03:00:24,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:24,751 INFO L130 PetriNetUnfolder]: 351/625 cut-off events. [2023-08-30 03:00:24,751 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2023-08-30 03:00:24,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 625 events. 351/625 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2508 event pairs, 289 based on Foata normal form. 42/667 useless extension candidates. Maximal degree in co-relation 1613. Up to 373 conditions per place. [2023-08-30 03:00:24,754 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 36 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-08-30 03:00:24,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 39 transitions, 216 flow [2023-08-30 03:00:24,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:00:24,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:00:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2023-08-30 03:00:24,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42358078602620086 [2023-08-30 03:00:24,756 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 388 transitions. [2023-08-30 03:00:24,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 388 transitions. [2023-08-30 03:00:24,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:24,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 388 transitions. [2023-08-30 03:00:24,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:24,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:24,760 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:24,760 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 100 flow. Second operand 4 states and 388 transitions. [2023-08-30 03:00:24,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 39 transitions, 216 flow [2023-08-30 03:00:24,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:00:24,763 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 110 flow [2023-08-30 03:00:24,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-08-30 03:00:24,765 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2023-08-30 03:00:24,766 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 110 flow [2023-08-30 03:00:24,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:24,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:24,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:00:24,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 03:00:24,767 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:24,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:24,768 INFO L85 PathProgramCache]: Analyzing trace with hash -323829963, now seen corresponding path program 1 times [2023-08-30 03:00:24,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:24,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082091539] [2023-08-30 03:00:24,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:24,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:25,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:25,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082091539] [2023-08-30 03:00:25,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082091539] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:25,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:25,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:00:25,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86834876] [2023-08-30 03:00:25,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:25,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:00:25,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:25,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:00:25,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:00:25,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 229 [2023-08-30 03:00:25,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:25,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:25,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 229 [2023-08-30 03:00:25,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:25,487 INFO L130 PetriNetUnfolder]: 335/605 cut-off events. [2023-08-30 03:00:25,488 INFO L131 PetriNetUnfolder]: For 220/220 co-relation queries the response was YES. [2023-08-30 03:00:25,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1618 conditions, 605 events. 335/605 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2510 event pairs, 197 based on Foata normal form. 12/617 useless extension candidates. Maximal degree in co-relation 1609. Up to 422 conditions per place. [2023-08-30 03:00:25,491 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 29 selfloop transitions, 11 changer transitions 0/40 dead transitions. [2023-08-30 03:00:25,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 234 flow [2023-08-30 03:00:25,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:00:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:00:25,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2023-08-30 03:00:25,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388646288209607 [2023-08-30 03:00:25,492 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2023-08-30 03:00:25,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2023-08-30 03:00:25,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:25,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2023-08-30 03:00:25,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:25,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:25,495 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:25,495 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 110 flow. Second operand 4 states and 402 transitions. [2023-08-30 03:00:25,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 234 flow [2023-08-30 03:00:25,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:00:25,497 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 160 flow [2023-08-30 03:00:25,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-08-30 03:00:25,498 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-08-30 03:00:25,498 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 160 flow [2023-08-30 03:00:25,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:25,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:25,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:00:25,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 03:00:25,499 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:25,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:25,499 INFO L85 PathProgramCache]: Analyzing trace with hash -887303660, now seen corresponding path program 1 times [2023-08-30 03:00:25,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:25,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477947484] [2023-08-30 03:00:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:25,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:25,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:25,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477947484] [2023-08-30 03:00:25,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477947484] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:25,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:25,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:00:25,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717681953] [2023-08-30 03:00:25,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:25,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:00:25,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:25,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:00:25,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:00:25,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 229 [2023-08-30 03:00:25,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:25,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:25,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 229 [2023-08-30 03:00:25,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:25,861 INFO L130 PetriNetUnfolder]: 293/522 cut-off events. [2023-08-30 03:00:25,861 INFO L131 PetriNetUnfolder]: For 555/555 co-relation queries the response was YES. [2023-08-30 03:00:25,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 522 events. 293/522 cut-off events. For 555/555 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2033 event pairs, 197 based on Foata normal form. 21/543 useless extension candidates. Maximal degree in co-relation 1519. Up to 515 conditions per place. [2023-08-30 03:00:25,864 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 21 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2023-08-30 03:00:25,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 24 transitions, 155 flow [2023-08-30 03:00:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:00:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:00:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2023-08-30 03:00:25,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40611353711790393 [2023-08-30 03:00:25,866 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2023-08-30 03:00:25,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2023-08-30 03:00:25,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:25,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2023-08-30 03:00:25,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:25,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:25,868 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:25,868 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 160 flow. Second operand 4 states and 372 transitions. [2023-08-30 03:00:25,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 24 transitions, 155 flow [2023-08-30 03:00:25,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 144 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 03:00:25,870 INFO L231 Difference]: Finished difference. Result has 34 places, 20 transitions, 88 flow [2023-08-30 03:00:25,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2023-08-30 03:00:25,871 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-08-30 03:00:25,871 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 88 flow [2023-08-30 03:00:25,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:25,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:25,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:00:25,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 03:00:25,872 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:25,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:25,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1621822068, now seen corresponding path program 1 times [2023-08-30 03:00:25,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:25,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766977586] [2023-08-30 03:00:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:25,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:26,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:26,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766977586] [2023-08-30 03:00:26,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766977586] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:26,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:26,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 03:00:26,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373517054] [2023-08-30 03:00:26,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:26,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 03:00:26,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:26,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 03:00:26,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 03:00:26,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 229 [2023-08-30 03:00:26,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 88 flow. Second operand has 8 states, 8 states have (on average 92.625) internal successors, (741), 8 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:26,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:26,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 229 [2023-08-30 03:00:26,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:27,153 INFO L130 PetriNetUnfolder]: 393/693 cut-off events. [2023-08-30 03:00:27,154 INFO L131 PetriNetUnfolder]: For 310/310 co-relation queries the response was YES. [2023-08-30 03:00:27,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1964 conditions, 693 events. 393/693 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2971 event pairs, 74 based on Foata normal form. 7/700 useless extension candidates. Maximal degree in co-relation 1955. Up to 467 conditions per place. [2023-08-30 03:00:27,157 INFO L137 encePairwiseOnDemand]: 221/229 looper letters, 37 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2023-08-30 03:00:27,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 281 flow [2023-08-30 03:00:27,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:00:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:00:27,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 593 transitions. [2023-08-30 03:00:27,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315866084425036 [2023-08-30 03:00:27,165 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 593 transitions. [2023-08-30 03:00:27,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 593 transitions. [2023-08-30 03:00:27,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:27,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 593 transitions. [2023-08-30 03:00:27,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.83333333333333) internal successors, (593), 6 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:27,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:27,169 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:27,169 INFO L175 Difference]: Start difference. First operand has 34 places, 20 transitions, 88 flow. Second operand 6 states and 593 transitions. [2023-08-30 03:00:27,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 47 transitions, 281 flow [2023-08-30 03:00:27,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:00:27,171 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 168 flow [2023-08-30 03:00:27,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2023-08-30 03:00:27,173 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2023-08-30 03:00:27,173 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 168 flow [2023-08-30 03:00:27,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 92.625) internal successors, (741), 8 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:27,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:27,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:00:27,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 03:00:27,174 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:27,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:27,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1308085620, now seen corresponding path program 2 times [2023-08-30 03:00:27,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:27,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810589223] [2023-08-30 03:00:27,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:27,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:28,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:28,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810589223] [2023-08-30 03:00:28,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810589223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:28,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:28,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 03:00:28,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655806943] [2023-08-30 03:00:28,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:28,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 03:00:28,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:28,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 03:00:28,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 03:00:28,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 229 [2023-08-30 03:00:28,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 168 flow. Second operand has 8 states, 8 states have (on average 94.625) internal successors, (757), 8 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:28,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:28,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 229 [2023-08-30 03:00:28,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:28,594 INFO L130 PetriNetUnfolder]: 463/816 cut-off events. [2023-08-30 03:00:28,594 INFO L131 PetriNetUnfolder]: For 963/963 co-relation queries the response was YES. [2023-08-30 03:00:28,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2755 conditions, 816 events. 463/816 cut-off events. For 963/963 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3678 event pairs, 106 based on Foata normal form. 6/822 useless extension candidates. Maximal degree in co-relation 2743. Up to 530 conditions per place. [2023-08-30 03:00:28,599 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 53 selfloop transitions, 9 changer transitions 0/62 dead transitions. [2023-08-30 03:00:28,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 62 transitions, 451 flow [2023-08-30 03:00:28,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:00:28,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:00:28,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 707 transitions. [2023-08-30 03:00:28,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410480349344978 [2023-08-30 03:00:28,602 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 707 transitions. [2023-08-30 03:00:28,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 707 transitions. [2023-08-30 03:00:28,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:28,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 707 transitions. [2023-08-30 03:00:28,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:28,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:28,606 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:28,606 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 168 flow. Second operand 7 states and 707 transitions. [2023-08-30 03:00:28,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 62 transitions, 451 flow [2023-08-30 03:00:28,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 433 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-30 03:00:28,611 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 218 flow [2023-08-30 03:00:28,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2023-08-30 03:00:28,612 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-08-30 03:00:28,612 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 218 flow [2023-08-30 03:00:28,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 94.625) internal successors, (757), 8 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:28,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:28,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:00:28,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 03:00:28,613 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:28,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:28,614 INFO L85 PathProgramCache]: Analyzing trace with hash -44446627, now seen corresponding path program 1 times [2023-08-30 03:00:28,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:28,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104024738] [2023-08-30 03:00:28,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:28,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:29,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:29,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104024738] [2023-08-30 03:00:29,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104024738] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:29,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:29,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 03:00:29,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081122717] [2023-08-30 03:00:29,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:29,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 03:00:29,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:29,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 03:00:29,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-30 03:00:30,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 229 [2023-08-30 03:00:30,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 218 flow. Second operand has 9 states, 9 states have (on average 94.55555555555556) internal successors, (851), 9 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:30,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:30,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 229 [2023-08-30 03:00:30,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:30,286 INFO L130 PetriNetUnfolder]: 457/806 cut-off events. [2023-08-30 03:00:30,286 INFO L131 PetriNetUnfolder]: For 1226/1226 co-relation queries the response was YES. [2023-08-30 03:00:30,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2830 conditions, 806 events. 457/806 cut-off events. For 1226/1226 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3624 event pairs, 104 based on Foata normal form. 4/810 useless extension candidates. Maximal degree in co-relation 2814. Up to 456 conditions per place. [2023-08-30 03:00:30,291 INFO L137 encePairwiseOnDemand]: 224/229 looper letters, 38 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2023-08-30 03:00:30,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 392 flow [2023-08-30 03:00:30,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:00:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:00:30,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2023-08-30 03:00:30,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393013100436681 [2023-08-30 03:00:30,293 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 503 transitions. [2023-08-30 03:00:30,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 503 transitions. [2023-08-30 03:00:30,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:30,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 503 transitions. [2023-08-30 03:00:30,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:30,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:30,303 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:30,303 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 218 flow. Second operand 5 states and 503 transitions. [2023-08-30 03:00:30,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 392 flow [2023-08-30 03:00:30,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 378 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 03:00:30,306 INFO L231 Difference]: Finished difference. Result has 52 places, 33 transitions, 237 flow [2023-08-30 03:00:30,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=52, PETRI_TRANSITIONS=33} [2023-08-30 03:00:30,307 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2023-08-30 03:00:30,307 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 33 transitions, 237 flow [2023-08-30 03:00:30,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 94.55555555555556) internal successors, (851), 9 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:30,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:30,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:00:30,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 03:00:30,308 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:30,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:30,308 INFO L85 PathProgramCache]: Analyzing trace with hash -44437947, now seen corresponding path program 1 times [2023-08-30 03:00:30,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:30,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632351631] [2023-08-30 03:00:30,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:30,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:31,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:31,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632351631] [2023-08-30 03:00:31,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632351631] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:31,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:31,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 03:00:31,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970197998] [2023-08-30 03:00:31,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:31,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 03:00:31,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:31,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 03:00:31,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-30 03:00:31,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 229 [2023-08-30 03:00:31,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 33 transitions, 237 flow. Second operand has 10 states, 10 states have (on average 87.4) internal successors, (874), 10 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:31,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:31,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 229 [2023-08-30 03:00:31,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:31,903 INFO L130 PetriNetUnfolder]: 559/1028 cut-off events. [2023-08-30 03:00:31,903 INFO L131 PetriNetUnfolder]: For 2328/2328 co-relation queries the response was YES. [2023-08-30 03:00:31,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3802 conditions, 1028 events. 559/1028 cut-off events. For 2328/2328 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5233 event pairs, 117 based on Foata normal form. 18/1046 useless extension candidates. Maximal degree in co-relation 3784. Up to 405 conditions per place. [2023-08-30 03:00:31,907 INFO L137 encePairwiseOnDemand]: 218/229 looper letters, 40 selfloop transitions, 6 changer transitions 40/86 dead transitions. [2023-08-30 03:00:31,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 86 transitions, 702 flow [2023-08-30 03:00:31,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 03:00:31,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 03:00:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 754 transitions. [2023-08-30 03:00:31,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115720524017467 [2023-08-30 03:00:31,910 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 754 transitions. [2023-08-30 03:00:31,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 754 transitions. [2023-08-30 03:00:31,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:31,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 754 transitions. [2023-08-30 03:00:31,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 94.25) internal successors, (754), 8 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:31,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:31,915 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:31,915 INFO L175 Difference]: Start difference. First operand has 52 places, 33 transitions, 237 flow. Second operand 8 states and 754 transitions. [2023-08-30 03:00:31,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 86 transitions, 702 flow [2023-08-30 03:00:31,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 86 transitions, 658 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-30 03:00:31,921 INFO L231 Difference]: Finished difference. Result has 59 places, 34 transitions, 257 flow [2023-08-30 03:00:31,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=257, PETRI_PLACES=59, PETRI_TRANSITIONS=34} [2023-08-30 03:00:31,922 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2023-08-30 03:00:31,922 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 34 transitions, 257 flow [2023-08-30 03:00:31,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.4) internal successors, (874), 10 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:31,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:31,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:00:31,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 03:00:31,923 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:31,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:31,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1000490425, now seen corresponding path program 2 times [2023-08-30 03:00:31,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:31,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200030259] [2023-08-30 03:00:31,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:31,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:32,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:32,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:32,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200030259] [2023-08-30 03:00:32,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200030259] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:32,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:32,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:00:32,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630509851] [2023-08-30 03:00:32,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:32,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:00:32,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:32,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:00:32,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:00:32,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 229 [2023-08-30 03:00:32,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 34 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:32,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:32,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 229 [2023-08-30 03:00:32,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:32,436 INFO L130 PetriNetUnfolder]: 287/572 cut-off events. [2023-08-30 03:00:32,436 INFO L131 PetriNetUnfolder]: For 1756/1756 co-relation queries the response was YES. [2023-08-30 03:00:32,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 572 events. 287/572 cut-off events. For 1756/1756 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2647 event pairs, 122 based on Foata normal form. 18/590 useless extension candidates. Maximal degree in co-relation 2333. Up to 370 conditions per place. [2023-08-30 03:00:32,440 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 30 selfloop transitions, 8 changer transitions 13/51 dead transitions. [2023-08-30 03:00:32,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 450 flow [2023-08-30 03:00:32,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:00:32,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:00:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 414 transitions. [2023-08-30 03:00:32,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519650655021834 [2023-08-30 03:00:32,442 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 414 transitions. [2023-08-30 03:00:32,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 414 transitions. [2023-08-30 03:00:32,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:32,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 414 transitions. [2023-08-30 03:00:32,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:32,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:32,445 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:32,445 INFO L175 Difference]: Start difference. First operand has 59 places, 34 transitions, 257 flow. Second operand 4 states and 414 transitions. [2023-08-30 03:00:32,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 450 flow [2023-08-30 03:00:32,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 434 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-30 03:00:32,450 INFO L231 Difference]: Finished difference. Result has 57 places, 34 transitions, 272 flow [2023-08-30 03:00:32,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=57, PETRI_TRANSITIONS=34} [2023-08-30 03:00:32,451 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-08-30 03:00:32,451 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 34 transitions, 272 flow [2023-08-30 03:00:32,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:32,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:32,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:00:32,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 03:00:32,452 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:32,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:32,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1986469247, now seen corresponding path program 3 times [2023-08-30 03:00:32,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:32,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921639990] [2023-08-30 03:00:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:32,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:33,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:33,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:33,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921639990] [2023-08-30 03:00:33,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921639990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:33,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:33,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 03:00:33,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363637872] [2023-08-30 03:00:33,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:33,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 03:00:33,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:33,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 03:00:33,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-30 03:00:33,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 229 [2023-08-30 03:00:33,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 34 transitions, 272 flow. Second operand has 11 states, 11 states have (on average 91.27272727272727) internal successors, (1004), 11 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:33,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:33,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 229 [2023-08-30 03:00:33,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:33,801 INFO L130 PetriNetUnfolder]: 205/433 cut-off events. [2023-08-30 03:00:33,801 INFO L131 PetriNetUnfolder]: For 1613/1613 co-relation queries the response was YES. [2023-08-30 03:00:33,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1903 conditions, 433 events. 205/433 cut-off events. For 1613/1613 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1928 event pairs, 91 based on Foata normal form. 15/448 useless extension candidates. Maximal degree in co-relation 1881. Up to 251 conditions per place. [2023-08-30 03:00:33,803 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 20 selfloop transitions, 2 changer transitions 44/66 dead transitions. [2023-08-30 03:00:33,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 644 flow [2023-08-30 03:00:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 03:00:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 03:00:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 771 transitions. [2023-08-30 03:00:33,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42085152838427947 [2023-08-30 03:00:33,806 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 771 transitions. [2023-08-30 03:00:33,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 771 transitions. [2023-08-30 03:00:33,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:33,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 771 transitions. [2023-08-30 03:00:33,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.375) internal successors, (771), 8 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:33,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:33,810 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:33,810 INFO L175 Difference]: Start difference. First operand has 57 places, 34 transitions, 272 flow. Second operand 8 states and 771 transitions. [2023-08-30 03:00:33,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 644 flow [2023-08-30 03:00:33,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 620 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 03:00:33,814 INFO L231 Difference]: Finished difference. Result has 63 places, 20 transitions, 144 flow [2023-08-30 03:00:33,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=144, PETRI_PLACES=63, PETRI_TRANSITIONS=20} [2023-08-30 03:00:33,815 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2023-08-30 03:00:33,815 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 20 transitions, 144 flow [2023-08-30 03:00:33,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 91.27272727272727) internal successors, (1004), 11 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:33,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:33,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:00:33,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 03:00:33,816 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:33,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:33,816 INFO L85 PathProgramCache]: Analyzing trace with hash 255562789, now seen corresponding path program 4 times [2023-08-30 03:00:33,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:33,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146595736] [2023-08-30 03:00:33,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:33,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:34,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:34,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:34,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146595736] [2023-08-30 03:00:34,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146595736] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:34,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:34,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:00:34,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157794000] [2023-08-30 03:00:34,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:34,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:00:34,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:34,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:00:34,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:00:34,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 229 [2023-08-30 03:00:34,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 20 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:34,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:34,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 229 [2023-08-30 03:00:34,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:34,406 INFO L130 PetriNetUnfolder]: 153/282 cut-off events. [2023-08-30 03:00:34,407 INFO L131 PetriNetUnfolder]: For 934/934 co-relation queries the response was YES. [2023-08-30 03:00:34,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 282 events. 153/282 cut-off events. For 934/934 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 937 event pairs, 40 based on Foata normal form. 3/285 useless extension candidates. Maximal degree in co-relation 1214. Up to 204 conditions per place. [2023-08-30 03:00:34,408 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 25 selfloop transitions, 9 changer transitions 0/34 dead transitions. [2023-08-30 03:00:34,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 34 transitions, 301 flow [2023-08-30 03:00:34,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:00:34,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:00:34,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 493 transitions. [2023-08-30 03:00:34,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43056768558951963 [2023-08-30 03:00:34,411 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 493 transitions. [2023-08-30 03:00:34,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 493 transitions. [2023-08-30 03:00:34,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:34,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 493 transitions. [2023-08-30 03:00:34,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.6) internal successors, (493), 5 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:34,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:34,414 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:34,414 INFO L175 Difference]: Start difference. First operand has 63 places, 20 transitions, 144 flow. Second operand 5 states and 493 transitions. [2023-08-30 03:00:34,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 34 transitions, 301 flow [2023-08-30 03:00:34,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 241 flow, removed 20 selfloop flow, removed 15 redundant places. [2023-08-30 03:00:34,417 INFO L231 Difference]: Finished difference. Result has 43 places, 26 transitions, 185 flow [2023-08-30 03:00:34,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2023-08-30 03:00:34,417 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-30 03:00:34,418 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 185 flow [2023-08-30 03:00:34,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:34,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:34,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:00:34,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 03:00:34,418 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:34,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:34,419 INFO L85 PathProgramCache]: Analyzing trace with hash 255573019, now seen corresponding path program 5 times [2023-08-30 03:00:34,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:34,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886380247] [2023-08-30 03:00:34,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:34,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:34,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:34,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886380247] [2023-08-30 03:00:34,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886380247] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:34,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:34,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 03:00:34,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762821632] [2023-08-30 03:00:34,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:34,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 03:00:34,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:34,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 03:00:34,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 03:00:35,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 229 [2023-08-30 03:00:35,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 185 flow. Second operand has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:35,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:35,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 229 [2023-08-30 03:00:35,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:35,374 INFO L130 PetriNetUnfolder]: 201/403 cut-off events. [2023-08-30 03:00:35,374 INFO L131 PetriNetUnfolder]: For 1119/1119 co-relation queries the response was YES. [2023-08-30 03:00:35,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 403 events. 201/403 cut-off events. For 1119/1119 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1732 event pairs, 34 based on Foata normal form. 18/421 useless extension candidates. Maximal degree in co-relation 1723. Up to 169 conditions per place. [2023-08-30 03:00:35,376 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 34 selfloop transitions, 6 changer transitions 23/63 dead transitions. [2023-08-30 03:00:35,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 63 transitions, 567 flow [2023-08-30 03:00:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:00:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:00:35,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 691 transitions. [2023-08-30 03:00:35,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310667498440424 [2023-08-30 03:00:35,378 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 691 transitions. [2023-08-30 03:00:35,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 691 transitions. [2023-08-30 03:00:35,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:35,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 691 transitions. [2023-08-30 03:00:35,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.71428571428571) internal successors, (691), 7 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:35,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:35,382 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:35,383 INFO L175 Difference]: Start difference. First operand has 43 places, 26 transitions, 185 flow. Second operand 7 states and 691 transitions. [2023-08-30 03:00:35,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 63 transitions, 567 flow [2023-08-30 03:00:35,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 480 flow, removed 42 selfloop flow, removed 4 redundant places. [2023-08-30 03:00:35,386 INFO L231 Difference]: Finished difference. Result has 48 places, 27 transitions, 188 flow [2023-08-30 03:00:35,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=48, PETRI_TRANSITIONS=27} [2023-08-30 03:00:35,386 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-08-30 03:00:35,387 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 27 transitions, 188 flow [2023-08-30 03:00:35,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:35,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:35,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:00:35,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 03:00:35,387 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:35,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:35,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1190269735, now seen corresponding path program 6 times [2023-08-30 03:00:35,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:35,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987802496] [2023-08-30 03:00:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:35,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:35,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:35,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987802496] [2023-08-30 03:00:35,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987802496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:35,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:35,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:00:35,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975101307] [2023-08-30 03:00:35,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:35,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:00:35,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:35,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:00:35,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:00:35,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 229 [2023-08-30 03:00:35,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 27 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:35,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:35,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 229 [2023-08-30 03:00:35,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:35,878 INFO L130 PetriNetUnfolder]: 114/247 cut-off events. [2023-08-30 03:00:35,879 INFO L131 PetriNetUnfolder]: For 825/825 co-relation queries the response was YES. [2023-08-30 03:00:35,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 247 events. 114/247 cut-off events. For 825/825 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 913 event pairs, 41 based on Foata normal form. 18/265 useless extension candidates. Maximal degree in co-relation 984. Up to 149 conditions per place. [2023-08-30 03:00:35,880 INFO L137 encePairwiseOnDemand]: 221/229 looper letters, 25 selfloop transitions, 6 changer transitions 16/47 dead transitions. [2023-08-30 03:00:35,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 397 flow [2023-08-30 03:00:35,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:00:35,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:00:35,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 594 transitions. [2023-08-30 03:00:35,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43231441048034935 [2023-08-30 03:00:35,882 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 594 transitions. [2023-08-30 03:00:35,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 594 transitions. [2023-08-30 03:00:35,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:35,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 594 transitions. [2023-08-30 03:00:35,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:35,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:35,886 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:35,886 INFO L175 Difference]: Start difference. First operand has 48 places, 27 transitions, 188 flow. Second operand 6 states and 594 transitions. [2023-08-30 03:00:35,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 397 flow [2023-08-30 03:00:35,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 382 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 03:00:35,888 INFO L231 Difference]: Finished difference. Result has 49 places, 25 transitions, 188 flow [2023-08-30 03:00:35,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=49, PETRI_TRANSITIONS=25} [2023-08-30 03:00:35,890 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-08-30 03:00:35,890 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 25 transitions, 188 flow [2023-08-30 03:00:35,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:35,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:35,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:00:35,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 03:00:35,891 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:35,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:35,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1530125255, now seen corresponding path program 7 times [2023-08-30 03:00:35,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:35,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115105051] [2023-08-30 03:00:35,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:35,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:36,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:36,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115105051] [2023-08-30 03:00:36,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115105051] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:36,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:36,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 03:00:36,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053457627] [2023-08-30 03:00:36,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:36,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 03:00:36,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:36,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 03:00:36,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-30 03:00:36,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 229 [2023-08-30 03:00:36,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 25 transitions, 188 flow. Second operand has 10 states, 10 states have (on average 90.4) internal successors, (904), 10 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:36,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:36,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 229 [2023-08-30 03:00:36,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:37,101 INFO L130 PetriNetUnfolder]: 123/248 cut-off events. [2023-08-30 03:00:37,101 INFO L131 PetriNetUnfolder]: For 849/849 co-relation queries the response was YES. [2023-08-30 03:00:37,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 248 events. 123/248 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 882 event pairs, 17 based on Foata normal form. 9/257 useless extension candidates. Maximal degree in co-relation 1112. Up to 89 conditions per place. [2023-08-30 03:00:37,103 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 24 selfloop transitions, 4 changer transitions 55/83 dead transitions. [2023-08-30 03:00:37,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 804 flow [2023-08-30 03:00:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 03:00:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 03:00:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1041 transitions. [2023-08-30 03:00:37,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132592298531163 [2023-08-30 03:00:37,106 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1041 transitions. [2023-08-30 03:00:37,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1041 transitions. [2023-08-30 03:00:37,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:37,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1041 transitions. [2023-08-30 03:00:37,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 94.63636363636364) internal successors, (1041), 11 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:37,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:37,110 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:37,111 INFO L175 Difference]: Start difference. First operand has 49 places, 25 transitions, 188 flow. Second operand 11 states and 1041 transitions. [2023-08-30 03:00:37,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 804 flow [2023-08-30 03:00:37,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 83 transitions, 736 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-08-30 03:00:37,113 INFO L231 Difference]: Finished difference. Result has 60 places, 25 transitions, 205 flow [2023-08-30 03:00:37,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=205, PETRI_PLACES=60, PETRI_TRANSITIONS=25} [2023-08-30 03:00:37,116 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-08-30 03:00:37,116 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 25 transitions, 205 flow [2023-08-30 03:00:37,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.4) internal successors, (904), 10 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:37,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:00:37,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:00:37,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 03:00:37,117 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 03:00:37,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:00:37,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1899426405, now seen corresponding path program 8 times [2023-08-30 03:00:37,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:00:37,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362732032] [2023-08-30 03:00:37,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:00:37,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:00:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:00:37,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:00:37,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:00:37,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362732032] [2023-08-30 03:00:37,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362732032] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:00:37,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:00:37,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 03:00:37,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409236363] [2023-08-30 03:00:37,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:00:37,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 03:00:37,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:00:37,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 03:00:37,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 03:00:37,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 229 [2023-08-30 03:00:37,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 25 transitions, 205 flow. Second operand has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:37,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:00:37,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 229 [2023-08-30 03:00:37,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:00:37,887 INFO L130 PetriNetUnfolder]: 23/64 cut-off events. [2023-08-30 03:00:37,887 INFO L131 PetriNetUnfolder]: For 363/363 co-relation queries the response was YES. [2023-08-30 03:00:37,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 64 events. 23/64 cut-off events. For 363/363 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 2 based on Foata normal form. 9/73 useless extension candidates. Maximal degree in co-relation 290. Up to 26 conditions per place. [2023-08-30 03:00:37,888 INFO L137 encePairwiseOnDemand]: 224/229 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-08-30 03:00:37,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 29 transitions, 268 flow [2023-08-30 03:00:37,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:00:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:00:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 587 transitions. [2023-08-30 03:00:37,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4272197962154294 [2023-08-30 03:00:37,890 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 587 transitions. [2023-08-30 03:00:37,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 587 transitions. [2023-08-30 03:00:37,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:00:37,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 587 transitions. [2023-08-30 03:00:37,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:37,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:37,893 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:37,893 INFO L175 Difference]: Start difference. First operand has 60 places, 25 transitions, 205 flow. Second operand 6 states and 587 transitions. [2023-08-30 03:00:37,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 29 transitions, 268 flow [2023-08-30 03:00:37,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 29 transitions, 203 flow, removed 21 selfloop flow, removed 15 redundant places. [2023-08-30 03:00:37,894 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-30 03:00:37,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-30 03:00:37,894 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-30 03:00:37,894 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-30 03:00:37,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:00:37,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2023-08-30 03:00:37,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONMEMORY_LEAK (10 of 12 remaining) [2023-08-30 03:00:37,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-30 03:00:37,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-30 03:00:37,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-30 03:00:37,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-30 03:00:37,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (5 of 12 remaining) [2023-08-30 03:00:37,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (4 of 12 remaining) [2023-08-30 03:00:37,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2023-08-30 03:00:37,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2023-08-30 03:00:37,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2023-08-30 03:00:37,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONMEMORY_LEAK (0 of 12 remaining) [2023-08-30 03:00:37,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 03:00:37,899 INFO L445 BasicCegarLoop]: Path program histogram: [8, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:00:37,902 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 03:00:37,902 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 03:00:37,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:00:37 BasicIcfg [2023-08-30 03:00:37,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 03:00:37,904 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 03:00:37,904 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 03:00:37,904 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 03:00:37,905 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:00:17" (3/4) ... [2023-08-30 03:00:37,906 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 03:00:37,909 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 03:00:37,909 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 03:00:37,912 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2023-08-30 03:00:37,912 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-08-30 03:00:37,913 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 03:00:37,913 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 03:00:37,939 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 03:00:37,939 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 03:00:37,940 INFO L158 Benchmark]: Toolchain (without parser) took 21848.57ms. Allocated memory was 81.8MB in the beginning and 476.1MB in the end (delta: 394.3MB). Free memory was 60.0MB in the beginning and 279.3MB in the end (delta: -219.3MB). Peak memory consumption was 175.7MB. Max. memory is 16.1GB. [2023-08-30 03:00:37,940 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:00:37,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 465.94ms. Allocated memory is still 81.8MB. Free memory was 59.8MB in the beginning and 51.8MB in the end (delta: 8.0MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2023-08-30 03:00:37,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.92ms. Allocated memory is still 81.8MB. Free memory was 51.8MB in the beginning and 48.2MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 03:00:37,941 INFO L158 Benchmark]: Boogie Preprocessor took 28.70ms. Allocated memory is still 81.8MB. Free memory was 48.2MB in the beginning and 45.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 03:00:37,941 INFO L158 Benchmark]: RCFGBuilder took 704.83ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 45.5MB in the beginning and 72.8MB in the end (delta: -27.3MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2023-08-30 03:00:37,941 INFO L158 Benchmark]: TraceAbstraction took 20540.78ms. Allocated memory was 98.6MB in the beginning and 476.1MB in the end (delta: 377.5MB). Free memory was 72.2MB in the beginning and 282.5MB in the end (delta: -210.3MB). Peak memory consumption was 167.0MB. Max. memory is 16.1GB. [2023-08-30 03:00:37,942 INFO L158 Benchmark]: Witness Printer took 35.35ms. Allocated memory is still 476.1MB. Free memory was 282.5MB in the beginning and 279.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 03:00:37,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 465.94ms. Allocated memory is still 81.8MB. Free memory was 59.8MB in the beginning and 51.8MB in the end (delta: 8.0MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.92ms. Allocated memory is still 81.8MB. Free memory was 51.8MB in the beginning and 48.2MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.70ms. Allocated memory is still 81.8MB. Free memory was 48.2MB in the beginning and 45.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 704.83ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 45.5MB in the beginning and 72.8MB in the end (delta: -27.3MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * TraceAbstraction took 20540.78ms. Allocated memory was 98.6MB in the beginning and 476.1MB in the end (delta: 377.5MB). Free memory was 72.2MB in the beginning and 282.5MB in the end (delta: -210.3MB). Peak memory consumption was 167.0MB. Max. memory is 16.1GB. * Witness Printer took 35.35ms. Allocated memory is still 476.1MB. Free memory was 282.5MB in the beginning and 279.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 118 PlacesBefore, 33 PlacesAfterwards, 113 TransitionsBefore, 26 TransitionsAfterwards, 1460 CoEnabledTransitionPairs, 7 FixpointIterations, 63 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 114 TotalNumberOfCompositions, 4743 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1480, independent: 1278, independent conditional: 0, independent unconditional: 1278, dependent: 202, dependent conditional: 0, dependent unconditional: 202, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 745, independent: 708, independent conditional: 0, independent unconditional: 708, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1480, independent: 570, independent conditional: 0, independent unconditional: 570, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 745, unknown conditional: 0, unknown unconditional: 745] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 874]: 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, 137 locations, 12 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: 20.5s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 833 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 582 mSDsluCounter, 1010 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 874 mSDsCounter, 420 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2706 IncrementalHoareTripleChecker+Invalid, 3126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 420 mSolverCounterUnsat, 136 mSDtfsCounter, 2706 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=272occurred in iteration=12, InterpolantAutomatonStates: 97, 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, 0.7s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 198 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 3409 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 03:00:37,966 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