./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe001_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/safe001_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 d13e05ad1104a4a5317ff09857a34619cbd86966f0892caf9775309ccc15230d --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 03:02:51,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:02:51,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:02:51,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:02:51,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:02:51,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:02:51,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:02:51,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:02:51,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:02:51,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:02:51,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:02:51,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:02:51,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:02:51,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:02:51,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:02:51,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:02:51,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:02:51,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:02:51,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:02:51,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:02:51,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:02:51,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:02:51,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:02:51,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:02:51,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:02:51,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:02:51,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:02:51,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:02:51,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:02:51,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:02:51,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:02:51,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:02:51,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:02:51,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:02:51,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:02:51,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:02:51,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:02:51,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:02:51,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:02:51,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:02:51,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:02:51,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:02:51,624 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:02:51,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:02:51,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:02:51,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:02:51,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:02:51,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:02:51,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:02:51,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:02:51,626 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:02:51,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:02:51,627 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:02:51,628 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:02:51,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:02:51,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:02:51,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:02:51,628 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:02:51,628 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:02:51,628 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:02:51,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:02:51,629 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:02:51,629 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:02:51,629 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:02:51,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:02:51,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:02:51,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:02:51,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:02:51,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:02:51,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:02:51,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:02:51,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:02:51,631 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:02:51,631 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:02:51,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:02:51,631 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:02:51,631 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d13e05ad1104a4a5317ff09857a34619cbd86966f0892caf9775309ccc15230d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:02:51,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:02:51,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:02:51,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:02:51,922 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:02:51,922 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:02:51,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.i [2023-08-30 03:02:53,011 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:02:53,290 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:02:53,291 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.i [2023-08-30 03:02:53,301 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22f5d3af3/0b43cd290a0c4731b378abbee181caef/FLAGe01e8d217 [2023-08-30 03:02:53,311 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22f5d3af3/0b43cd290a0c4731b378abbee181caef [2023-08-30 03:02:53,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:02:53,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:02:53,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:02:53,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:02:53,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:02:53,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:02:53" (1/1) ... [2023-08-30 03:02:53,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15966110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:02:53, skipping insertion in model container [2023-08-30 03:02:53,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:02:53" (1/1) ... [2023-08-30 03:02:53,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:02:53,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:02:53,470 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/safe001_tso.i[945,958] [2023-08-30 03:02:53,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:02:53,599 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:02:53,609 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/safe001_tso.i[945,958] [2023-08-30 03:02:53,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:02:53,688 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:02:53,689 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:02:53,705 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:02:53,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:02:53 WrapperNode [2023-08-30 03:02:53,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:02:53,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:02:53,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:02:53,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:02:53,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:02:53" (1/1) ... [2023-08-30 03:02:53,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:02:53" (1/1) ... [2023-08-30 03:02:53,765 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-30 03:02:53,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:02:53,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:02:53,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:02:53,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:02:53,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:02:53" (1/1) ... [2023-08-30 03:02:53,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:02:53" (1/1) ... [2023-08-30 03:02:53,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:02:53" (1/1) ... [2023-08-30 03:02:53,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:02:53" (1/1) ... [2023-08-30 03:02:53,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:02:53" (1/1) ... [2023-08-30 03:02:53,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:02:53" (1/1) ... [2023-08-30 03:02:53,799 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:02:53" (1/1) ... [2023-08-30 03:02:53,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:02:53" (1/1) ... [2023-08-30 03:02:53,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:02:53,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:02:53,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:02:53,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:02:53,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:02:53" (1/1) ... [2023-08-30 03:02:53,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:02:53,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:02:53,857 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 03:02:53,877 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 03:02:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 03:02:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 03:02:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:02:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:02:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:02:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 03:02:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 03:02:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 03:02:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 03:02:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 03:02:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 03:02:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 03:02:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 03:02:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:02:53,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:02:53,888 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 03:02:54,044 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:02:54,045 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:02:54,207 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:02:54,212 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:02:54,212 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 03:02:54,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:02:54 BoogieIcfgContainer [2023-08-30 03:02:54,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:02:54,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:02:54,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:02:54,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:02:54,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:02:53" (1/3) ... [2023-08-30 03:02:54,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad966be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:02:54, skipping insertion in model container [2023-08-30 03:02:54,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:02:53" (2/3) ... [2023-08-30 03:02:54,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad966be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:02:54, skipping insertion in model container [2023-08-30 03:02:54,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:02:54" (3/3) ... [2023-08-30 03:02:54,220 INFO L112 eAbstractionObserver]: Analyzing ICFG safe001_tso.i [2023-08-30 03:02:54,231 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:02:54,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 03:02:54,234 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:02:54,278 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 03:02:54,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 203 flow [2023-08-30 03:02:54,332 INFO L130 PetriNetUnfolder]: 2/91 cut-off events. [2023-08-30 03:02:54,332 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:02:54,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 2/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-30 03:02:54,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 94 transitions, 203 flow [2023-08-30 03:02:54,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 87 transitions, 183 flow [2023-08-30 03:02:54,341 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:02:54,346 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 87 transitions, 183 flow [2023-08-30 03:02:54,348 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 87 transitions, 183 flow [2023-08-30 03:02:54,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 87 transitions, 183 flow [2023-08-30 03:02:54,363 INFO L130 PetriNetUnfolder]: 2/87 cut-off events. [2023-08-30 03:02:54,363 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:02:54,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-30 03:02:54,365 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2023-08-30 03:02:56,374 INFO L134 LiptonReduction]: Checked pairs total: 3595 [2023-08-30 03:02:56,375 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-30 03:02:56,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:02:56,390 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;@4ccd7a6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:02:56,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-30 03:02:56,392 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 03:02:56,393 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:02:56,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:02:56,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 03:02:56,394 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 03:02:56,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:02:56,397 INFO L85 PathProgramCache]: Analyzing trace with hash 334, now seen corresponding path program 1 times [2023-08-30 03:02:56,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:02:56,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348737748] [2023-08-30 03:02:56,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:02:56,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:02:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:02:56,490 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 03:02:56,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:02:56,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348737748] [2023-08-30 03:02:56,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348737748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:02:56,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:02:56,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 03:02:56,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774458055] [2023-08-30 03:02:56,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:02:56,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 03:02:56,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:02:56,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 03:02:56,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 03:02:56,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 188 [2023-08-30 03:02:56,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 59 flow. Second operand has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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 03:02:56,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:02:56,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 188 [2023-08-30 03:02:56,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:02:56,575 INFO L130 PetriNetUnfolder]: 218/374 cut-off events. [2023-08-30 03:02:56,575 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 03:02:56,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 374 events. 218/374 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1601 event pairs, 218 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 745. Up to 352 conditions per place. [2023-08-30 03:02:56,578 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 15 selfloop transitions, 0 changer transitions 0/18 dead transitions. [2023-08-30 03:02:56,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 75 flow [2023-08-30 03:02:56,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 03:02:56,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 03:02:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 198 transitions. [2023-08-30 03:02:56,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2023-08-30 03:02:56,587 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 198 transitions. [2023-08-30 03:02:56,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 198 transitions. [2023-08-30 03:02:56,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:02:56,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 198 transitions. [2023-08-30 03:02:56,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 99.0) internal successors, (198), 2 states have internal predecessors, (198), 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 03:02:56,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 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 03:02:56,594 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 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 03:02:56,595 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 59 flow. Second operand 2 states and 198 transitions. [2023-08-30 03:02:56,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 75 flow [2023-08-30 03:02:56,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 03:02:56,597 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 42 flow [2023-08-30 03:02:56,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-30 03:02:56,600 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -8 predicate places. [2023-08-30 03:02:56,601 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 42 flow [2023-08-30 03:02:56,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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 03:02:56,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:02:56,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:02:56,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 03:02:56,602 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 03:02:56,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:02:56,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1192405077, now seen corresponding path program 1 times [2023-08-30 03:02:56,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:02:56,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360762137] [2023-08-30 03:02:56,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:02:56,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:02:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:02:57,044 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 03:02:57,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:02:57,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360762137] [2023-08-30 03:02:57,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360762137] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:02:57,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:02:57,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:02:57,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955784363] [2023-08-30 03:02:57,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:02:57,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:02:57,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:02:57,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:02:57,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:02:57,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 188 [2023-08-30 03:02:57,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 03:02:57,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:02:57,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 188 [2023-08-30 03:02:57,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:02:57,220 INFO L130 PetriNetUnfolder]: 797/1251 cut-off events. [2023-08-30 03:02:57,220 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:02:57,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2555 conditions, 1251 events. 797/1251 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5670 event pairs, 334 based on Foata normal form. 0/1205 useless extension candidates. Maximal degree in co-relation 2552. Up to 712 conditions per place. [2023-08-30 03:02:57,227 INFO L137 encePairwiseOnDemand]: 179/188 looper letters, 25 selfloop transitions, 8 changer transitions 0/33 dead transitions. [2023-08-30 03:02:57,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 142 flow [2023-08-30 03:02:57,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:02:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:02:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-08-30 03:02:57,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475177304964539 [2023-08-30 03:02:57,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-08-30 03:02:57,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-08-30 03:02:57,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:02:57,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-08-30 03:02:57,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 03:02:57,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 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 03:02:57,239 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 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 03:02:57,239 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 42 flow. Second operand 3 states and 268 transitions. [2023-08-30 03:02:57,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 142 flow [2023-08-30 03:02:57,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:02:57,240 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 104 flow [2023-08-30 03:02:57,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-08-30 03:02:57,241 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-30 03:02:57,241 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 104 flow [2023-08-30 03:02:57,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 03:02:57,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:02:57,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:02:57,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 03:02:57,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 03:02:57,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:02:57,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1192405085, now seen corresponding path program 1 times [2023-08-30 03:02:57,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:02:57,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550691932] [2023-08-30 03:02:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:02:57,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:02:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:02:57,494 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 03:02:57,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:02:57,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550691932] [2023-08-30 03:02:57,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550691932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:02:57,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:02:57,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:02:57,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463532470] [2023-08-30 03:02:57,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:02:57,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:02:57,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:02:57,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:02:57,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:02:57,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 188 [2023-08-30 03:02:57,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 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 03:02:57,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:02:57,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 188 [2023-08-30 03:02:57,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:02:57,670 INFO L130 PetriNetUnfolder]: 416/722 cut-off events. [2023-08-30 03:02:57,670 INFO L131 PetriNetUnfolder]: For 407/407 co-relation queries the response was YES. [2023-08-30 03:02:57,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1939 conditions, 722 events. 416/722 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3441 event pairs, 104 based on Foata normal form. 97/817 useless extension candidates. Maximal degree in co-relation 1934. Up to 528 conditions per place. [2023-08-30 03:02:57,675 INFO L137 encePairwiseOnDemand]: 184/188 looper letters, 22 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-30 03:02:57,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 176 flow [2023-08-30 03:02:57,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:02:57,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:02:57,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 386 transitions. [2023-08-30 03:02:57,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4106382978723404 [2023-08-30 03:02:57,676 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 386 transitions. [2023-08-30 03:02:57,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 386 transitions. [2023-08-30 03:02:57,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:02:57,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 386 transitions. [2023-08-30 03:02:57,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 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 03:02:57,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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 03:02:57,679 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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 03:02:57,679 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 104 flow. Second operand 5 states and 386 transitions. [2023-08-30 03:02:57,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 176 flow [2023-08-30 03:02:57,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:02:57,687 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 86 flow [2023-08-30 03:02:57,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2023-08-30 03:02:57,688 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-08-30 03:02:57,688 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 86 flow [2023-08-30 03:02:57,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 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 03:02:57,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:02:57,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:02:57,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 03:02:57,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 03:02:57,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:02:57,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1079603841, now seen corresponding path program 1 times [2023-08-30 03:02:57,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:02:57,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787285446] [2023-08-30 03:02:57,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:02:57,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:02:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:02:57,794 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 03:02:57,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:02:57,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787285446] [2023-08-30 03:02:57,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787285446] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:02:57,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:02:57,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:02:57,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74259312] [2023-08-30 03:02:57,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:02:57,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:02:57,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:02:57,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:02:57,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:02:57,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 188 [2023-08-30 03:02:57,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 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 03:02:57,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:02:57,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 188 [2023-08-30 03:02:57,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:02:57,874 INFO L130 PetriNetUnfolder]: 521/843 cut-off events. [2023-08-30 03:02:57,875 INFO L131 PetriNetUnfolder]: For 184/184 co-relation queries the response was YES. [2023-08-30 03:02:57,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2209 conditions, 843 events. 521/843 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3441 event pairs, 103 based on Foata normal form. 7/850 useless extension candidates. Maximal degree in co-relation 2204. Up to 344 conditions per place. [2023-08-30 03:02:57,878 INFO L137 encePairwiseOnDemand]: 180/188 looper letters, 30 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2023-08-30 03:02:57,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 208 flow [2023-08-30 03:02:57,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:02:57,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:02:57,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2023-08-30 03:02:57,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601063829787234 [2023-08-30 03:02:57,880 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2023-08-30 03:02:57,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2023-08-30 03:02:57,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:02:57,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2023-08-30 03:02:57,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 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 03:02:57,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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 03:02:57,882 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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 03:02:57,882 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 86 flow. Second operand 4 states and 346 transitions. [2023-08-30 03:02:57,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 208 flow [2023-08-30 03:02:57,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 203 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 03:02:57,884 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 139 flow [2023-08-30 03:02:57,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-08-30 03:02:57,884 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-30 03:02:57,885 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 139 flow [2023-08-30 03:02:57,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 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 03:02:57,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:02:57,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:02:57,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 03:02:57,885 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 03:02:57,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:02:57,886 INFO L85 PathProgramCache]: Analyzing trace with hash -855030366, now seen corresponding path program 1 times [2023-08-30 03:02:57,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:02:57,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803966780] [2023-08-30 03:02:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:02:57,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:02:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:02:58,015 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 03:02:58,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:02:58,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803966780] [2023-08-30 03:02:58,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803966780] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:02:58,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:02:58,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:02:58,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509572245] [2023-08-30 03:02:58,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:02:58,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:02:58,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:02:58,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:02:58,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:02:58,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 188 [2023-08-30 03:02:58,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 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 03:02:58,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:02:58,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 188 [2023-08-30 03:02:58,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:02:58,115 INFO L130 PetriNetUnfolder]: 493/800 cut-off events. [2023-08-30 03:02:58,115 INFO L131 PetriNetUnfolder]: For 657/657 co-relation queries the response was YES. [2023-08-30 03:02:58,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2558 conditions, 800 events. 493/800 cut-off events. For 657/657 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3359 event pairs, 88 based on Foata normal form. 9/809 useless extension candidates. Maximal degree in co-relation 2551. Up to 372 conditions per place. [2023-08-30 03:02:58,119 INFO L137 encePairwiseOnDemand]: 180/188 looper letters, 40 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2023-08-30 03:02:58,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 52 transitions, 347 flow [2023-08-30 03:02:58,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:02:58,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:02:58,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2023-08-30 03:02:58,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47074468085106386 [2023-08-30 03:02:58,121 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2023-08-30 03:02:58,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2023-08-30 03:02:58,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:02:58,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2023-08-30 03:02:58,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 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 03:02:58,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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 03:02:58,123 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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 03:02:58,124 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 139 flow. Second operand 4 states and 354 transitions. [2023-08-30 03:02:58,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 52 transitions, 347 flow [2023-08-30 03:02:58,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 52 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:02:58,128 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 241 flow [2023-08-30 03:02:58,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-08-30 03:02:58,130 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-08-30 03:02:58,130 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 241 flow [2023-08-30 03:02:58,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 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 03:02:58,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:02:58,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:02:58,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 03:02:58,131 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 03:02:58,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:02:58,132 INFO L85 PathProgramCache]: Analyzing trace with hash -855808342, now seen corresponding path program 1 times [2023-08-30 03:02:58,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:02:58,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640930052] [2023-08-30 03:02:58,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:02:58,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:02:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:02:58,260 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 03:02:58,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:02:58,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640930052] [2023-08-30 03:02:58,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640930052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:02:58,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:02:58,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:02:58,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322721119] [2023-08-30 03:02:58,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:02:58,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:02:58,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:02:58,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:02:58,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:02:58,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 188 [2023-08-30 03:02:58,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 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 03:02:58,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:02:58,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 188 [2023-08-30 03:02:58,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:02:58,343 INFO L130 PetriNetUnfolder]: 478/776 cut-off events. [2023-08-30 03:02:58,343 INFO L131 PetriNetUnfolder]: For 1319/1319 co-relation queries the response was YES. [2023-08-30 03:02:58,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2940 conditions, 776 events. 478/776 cut-off events. For 1319/1319 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3177 event pairs, 60 based on Foata normal form. 3/779 useless extension candidates. Maximal degree in co-relation 2930. Up to 406 conditions per place. [2023-08-30 03:02:58,347 INFO L137 encePairwiseOnDemand]: 180/188 looper letters, 36 selfloop transitions, 22 changer transitions 0/58 dead transitions. [2023-08-30 03:02:58,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 58 transitions, 505 flow [2023-08-30 03:02:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:02:58,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:02:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2023-08-30 03:02:58,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46941489361702127 [2023-08-30 03:02:58,349 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2023-08-30 03:02:58,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2023-08-30 03:02:58,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:02:58,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2023-08-30 03:02:58,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 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 03:02:58,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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 03:02:58,351 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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 03:02:58,352 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 241 flow. Second operand 4 states and 353 transitions. [2023-08-30 03:02:58,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 58 transitions, 505 flow [2023-08-30 03:02:58,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:02:58,356 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 436 flow [2023-08-30 03:02:58,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=436, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-08-30 03:02:58,357 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2023-08-30 03:02:58,357 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 436 flow [2023-08-30 03:02:58,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 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 03:02:58,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:02:58,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:02:58,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 03:02:58,358 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 03:02:58,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:02:58,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1788964998, now seen corresponding path program 1 times [2023-08-30 03:02:58,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:02:58,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698554213] [2023-08-30 03:02:58,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:02:58,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:02:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:02:58,462 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 03:02:58,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:02:58,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698554213] [2023-08-30 03:02:58,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698554213] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:02:58,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:02:58,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:02:58,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945830411] [2023-08-30 03:02:58,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:02:58,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:02:58,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:02:58,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:02:58,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:02:58,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 188 [2023-08-30 03:02:58,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 436 flow. Second operand has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 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 03:02:58,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:02:58,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 188 [2023-08-30 03:02:58,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:02:58,567 INFO L130 PetriNetUnfolder]: 527/868 cut-off events. [2023-08-30 03:02:58,568 INFO L131 PetriNetUnfolder]: For 3174/3174 co-relation queries the response was YES. [2023-08-30 03:02:58,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3700 conditions, 868 events. 527/868 cut-off events. For 3174/3174 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3678 event pairs, 108 based on Foata normal form. 27/895 useless extension candidates. Maximal degree in co-relation 3687. Up to 476 conditions per place. [2023-08-30 03:02:58,572 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 34 selfloop transitions, 10 changer transitions 34/78 dead transitions. [2023-08-30 03:02:58,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 78 transitions, 885 flow [2023-08-30 03:02:58,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:02:58,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:02:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2023-08-30 03:02:58,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46063829787234045 [2023-08-30 03:02:58,574 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2023-08-30 03:02:58,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2023-08-30 03:02:58,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:02:58,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2023-08-30 03:02:58,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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 03:02:58,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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 03:02:58,576 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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 03:02:58,576 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 436 flow. Second operand 5 states and 433 transitions. [2023-08-30 03:02:58,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 78 transitions, 885 flow [2023-08-30 03:02:58,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 78 transitions, 885 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:02:58,584 INFO L231 Difference]: Finished difference. Result has 50 places, 30 transitions, 300 flow [2023-08-30 03:02:58,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=50, PETRI_TRANSITIONS=30} [2023-08-30 03:02:58,585 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-08-30 03:02:58,585 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 30 transitions, 300 flow [2023-08-30 03:02:58,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 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 03:02:58,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:02:58,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:02:58,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 03:02:58,585 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 03:02:58,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:02:58,586 INFO L85 PathProgramCache]: Analyzing trace with hash 2013724312, now seen corresponding path program 1 times [2023-08-30 03:02:58,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:02:58,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437164153] [2023-08-30 03:02:58,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:02:58,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:02:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:02:58,674 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 03:02:58,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:02:58,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437164153] [2023-08-30 03:02:58,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437164153] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:02:58,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:02:58,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:02:58,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345811007] [2023-08-30 03:02:58,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:02:58,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:02:58,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:02:58,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:02:58,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:02:58,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-08-30 03:02:58,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 30 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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 03:02:58,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:02:58,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-08-30 03:02:58,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:02:58,750 INFO L130 PetriNetUnfolder]: 277/505 cut-off events. [2023-08-30 03:02:58,750 INFO L131 PetriNetUnfolder]: For 1830/1837 co-relation queries the response was YES. [2023-08-30 03:02:58,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 505 events. 277/505 cut-off events. For 1830/1837 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2158 event pairs, 89 based on Foata normal form. 19/517 useless extension candidates. Maximal degree in co-relation 2079. Up to 209 conditions per place. [2023-08-30 03:02:58,753 INFO L137 encePairwiseOnDemand]: 184/188 looper letters, 22 selfloop transitions, 5 changer transitions 15/46 dead transitions. [2023-08-30 03:02:58,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 446 flow [2023-08-30 03:02:58,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:02:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:02:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-08-30 03:02:58,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2023-08-30 03:02:58,755 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-08-30 03:02:58,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-08-30 03:02:58,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:02:58,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-08-30 03:02:58,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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 03:02:58,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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 03:02:58,757 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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 03:02:58,757 INFO L175 Difference]: Start difference. First operand has 50 places, 30 transitions, 300 flow. Second operand 5 states and 450 transitions. [2023-08-30 03:02:58,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 446 flow [2023-08-30 03:02:58,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 400 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-30 03:02:58,762 INFO L231 Difference]: Finished difference. Result has 51 places, 26 transitions, 228 flow [2023-08-30 03:02:58,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=51, PETRI_TRANSITIONS=26} [2023-08-30 03:02:58,763 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-08-30 03:02:58,763 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 26 transitions, 228 flow [2023-08-30 03:02:58,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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 03:02:58,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:02:58,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:02:58,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 03:02:58,764 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 03:02:58,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:02:58,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1557552420, now seen corresponding path program 1 times [2023-08-30 03:02:58,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:02:58,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238764125] [2023-08-30 03:02:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:02:58,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:02:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:02:58,857 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 03:02:58,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:02:58,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238764125] [2023-08-30 03:02:58,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238764125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:02:58,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:02:58,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:02:58,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246275289] [2023-08-30 03:02:58,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:02:58,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:02:58,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:02:58,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:02:58,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:02:58,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 188 [2023-08-30 03:02:58,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 26 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 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 03:02:58,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:02:58,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 188 [2023-08-30 03:02:58,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:02:58,928 INFO L130 PetriNetUnfolder]: 225/406 cut-off events. [2023-08-30 03:02:58,928 INFO L131 PetriNetUnfolder]: For 1441/1441 co-relation queries the response was YES. [2023-08-30 03:02:58,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1589 conditions, 406 events. 225/406 cut-off events. For 1441/1441 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1481 event pairs, 77 based on Foata normal form. 12/418 useless extension candidates. Maximal degree in co-relation 1572. Up to 232 conditions per place. [2023-08-30 03:02:58,930 INFO L137 encePairwiseOnDemand]: 183/188 looper letters, 21 selfloop transitions, 4 changer transitions 14/39 dead transitions. [2023-08-30 03:02:58,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 39 transitions, 353 flow [2023-08-30 03:02:58,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:02:58,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:02:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 422 transitions. [2023-08-30 03:02:58,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44893617021276594 [2023-08-30 03:02:58,932 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 422 transitions. [2023-08-30 03:02:58,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 422 transitions. [2023-08-30 03:02:58,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:02:58,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 422 transitions. [2023-08-30 03:02:58,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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 03:02:58,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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 03:02:58,934 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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 03:02:58,934 INFO L175 Difference]: Start difference. First operand has 51 places, 26 transitions, 228 flow. Second operand 5 states and 422 transitions. [2023-08-30 03:02:58,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 39 transitions, 353 flow [2023-08-30 03:02:58,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 319 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 03:02:58,937 INFO L231 Difference]: Finished difference. Result has 47 places, 17 transitions, 118 flow [2023-08-30 03:02:58,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=47, PETRI_TRANSITIONS=17} [2023-08-30 03:02:58,938 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2023-08-30 03:02:58,938 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 17 transitions, 118 flow [2023-08-30 03:02:58,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 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 03:02:58,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:02:58,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:02:58,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 03:02:58,939 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 03:02:58,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:02:58,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1999099300, now seen corresponding path program 2 times [2023-08-30 03:02:58,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:02:58,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300419127] [2023-08-30 03:02:58,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:02:58,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:02:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:02:59,025 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 03:02:59,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:02:59,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300419127] [2023-08-30 03:02:59,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300419127] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:02:59,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:02:59,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:02:59,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050993518] [2023-08-30 03:02:59,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:02:59,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:02:59,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:02:59,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:02:59,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:02:59,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-08-30 03:02:59,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 17 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:02:59,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:02:59,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-08-30 03:02:59,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:02:59,068 INFO L130 PetriNetUnfolder]: 46/108 cut-off events. [2023-08-30 03:02:59,068 INFO L131 PetriNetUnfolder]: For 319/323 co-relation queries the response was YES. [2023-08-30 03:02:59,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 108 events. 46/108 cut-off events. For 319/323 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 333 event pairs, 12 based on Foata normal form. 6/112 useless extension candidates. Maximal degree in co-relation 355. Up to 62 conditions per place. [2023-08-30 03:02:59,069 INFO L137 encePairwiseOnDemand]: 182/188 looper letters, 17 selfloop transitions, 3 changer transitions 13/36 dead transitions. [2023-08-30 03:02:59,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 36 transitions, 271 flow [2023-08-30 03:02:59,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:02:59,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:02:59,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-08-30 03:02:59,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2023-08-30 03:02:59,071 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-08-30 03:02:59,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-08-30 03:02:59,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:02:59,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-08-30 03:02:59,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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 03:02:59,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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 03:02:59,073 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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 03:02:59,073 INFO L175 Difference]: Start difference. First operand has 47 places, 17 transitions, 118 flow. Second operand 5 states and 450 transitions. [2023-08-30 03:02:59,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 36 transitions, 271 flow [2023-08-30 03:02:59,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 178 flow, removed 12 selfloop flow, removed 16 redundant places. [2023-08-30 03:02:59,074 INFO L231 Difference]: Finished difference. Result has 38 places, 19 transitions, 89 flow [2023-08-30 03:02:59,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=89, PETRI_PLACES=38, PETRI_TRANSITIONS=19} [2023-08-30 03:02:59,075 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-08-30 03:02:59,075 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 19 transitions, 89 flow [2023-08-30 03:02:59,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:02:59,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:02:59,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:02:59,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 03:02:59,076 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 03:02:59,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:02:59,076 INFO L85 PathProgramCache]: Analyzing trace with hash 481796789, now seen corresponding path program 1 times [2023-08-30 03:02:59,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:02:59,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620780533] [2023-08-30 03:02:59,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:02:59,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:02:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:02:59,174 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 03:02:59,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:02:59,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620780533] [2023-08-30 03:02:59,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620780533] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:02:59,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:02:59,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:02:59,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985692132] [2023-08-30 03:02:59,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:02:59,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:02:59,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:02:59,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:02:59,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:02:59,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-08-30 03:02:59,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 19 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 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 03:02:59,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:02:59,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-08-30 03:02:59,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:02:59,222 INFO L130 PetriNetUnfolder]: 24/68 cut-off events. [2023-08-30 03:02:59,223 INFO L131 PetriNetUnfolder]: For 67/74 co-relation queries the response was YES. [2023-08-30 03:02:59,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 68 events. 24/68 cut-off events. For 67/74 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 168 event pairs, 3 based on Foata normal form. 7/73 useless extension candidates. Maximal degree in co-relation 243. Up to 40 conditions per place. [2023-08-30 03:02:59,223 INFO L137 encePairwiseOnDemand]: 182/188 looper letters, 16 selfloop transitions, 5 changer transitions 13/37 dead transitions. [2023-08-30 03:02:59,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 248 flow [2023-08-30 03:02:59,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:02:59,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:02:59,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 534 transitions. [2023-08-30 03:02:59,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734042553191489 [2023-08-30 03:02:59,225 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 534 transitions. [2023-08-30 03:02:59,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 534 transitions. [2023-08-30 03:02:59,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:02:59,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 534 transitions. [2023-08-30 03:02:59,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 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 03:02:59,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 188.0) internal successors, (1316), 7 states have internal predecessors, (1316), 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 03:02:59,230 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 188.0) internal successors, (1316), 7 states have internal predecessors, (1316), 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 03:02:59,230 INFO L175 Difference]: Start difference. First operand has 38 places, 19 transitions, 89 flow. Second operand 6 states and 534 transitions. [2023-08-30 03:02:59,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 248 flow [2023-08-30 03:02:59,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 243 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 03:02:59,231 INFO L231 Difference]: Finished difference. Result has 42 places, 19 transitions, 108 flow [2023-08-30 03:02:59,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=19} [2023-08-30 03:02:59,232 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-30 03:02:59,232 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 19 transitions, 108 flow [2023-08-30 03:02:59,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 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 03:02:59,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:02:59,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:02:59,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 03:02:59,233 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 03:02:59,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:02:59,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2050782753, now seen corresponding path program 1 times [2023-08-30 03:02:59,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:02:59,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179087527] [2023-08-30 03:02:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:02:59,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:02:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:02:59,361 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 03:02:59,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:02:59,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179087527] [2023-08-30 03:02:59,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179087527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:02:59,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:02:59,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:02:59,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133925705] [2023-08-30 03:02:59,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:02:59,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:02:59,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:02:59,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:02:59,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:02:59,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-08-30 03:02:59,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 19 transitions, 108 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 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 03:02:59,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:02:59,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-08-30 03:02:59,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:02:59,408 INFO L130 PetriNetUnfolder]: 11/39 cut-off events. [2023-08-30 03:02:59,408 INFO L131 PetriNetUnfolder]: For 86/95 co-relation queries the response was YES. [2023-08-30 03:02:59,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 39 events. 11/39 cut-off events. For 86/95 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 2 based on Foata normal form. 6/44 useless extension candidates. Maximal degree in co-relation 151. Up to 17 conditions per place. [2023-08-30 03:02:59,408 INFO L137 encePairwiseOnDemand]: 182/188 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-08-30 03:02:59,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 26 transitions, 183 flow [2023-08-30 03:02:59,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:02:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:02:59,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2023-08-30 03:02:59,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45972644376899696 [2023-08-30 03:02:59,410 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2023-08-30 03:02:59,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2023-08-30 03:02:59,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:02:59,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2023-08-30 03:02:59,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 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 03:02:59,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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 03:02:59,413 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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 03:02:59,413 INFO L175 Difference]: Start difference. First operand has 42 places, 19 transitions, 108 flow. Second operand 7 states and 605 transitions. [2023-08-30 03:02:59,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 26 transitions, 183 flow [2023-08-30 03:02:59,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 26 transitions, 156 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-30 03:02:59,414 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-08-30 03:02:59,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-08-30 03:02:59,414 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-08-30 03:02:59,414 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-08-30 03:02:59,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 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 03:02:59,416 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-30 03:02:59,417 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-30 03:02:59,417 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-30 03:02:59,417 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-30 03:02:59,417 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-30 03:02:59,417 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-30 03:02:59,417 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-30 03:02:59,417 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-30 03:02:59,417 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-30 03:02:59,418 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-30 03:02:59,418 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-30 03:02:59,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 03:02:59,418 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:02:59,420 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 03:02:59,420 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 03:02:59,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:02:59 BasicIcfg [2023-08-30 03:02:59,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 03:02:59,422 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 03:02:59,422 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 03:02:59,422 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 03:02:59,423 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:02:54" (3/4) ... [2023-08-30 03:02:59,424 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 03:02:59,428 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 03:02:59,428 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 03:02:59,428 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-30 03:02:59,431 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-30 03:02:59,431 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 03:02:59,431 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 03:02:59,431 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 03:02:59,449 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 03:02:59,449 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 03:02:59,450 INFO L158 Benchmark]: Toolchain (without parser) took 6136.04ms. Allocated memory was 75.5MB in the beginning and 161.5MB in the end (delta: 86.0MB). Free memory was 51.6MB in the beginning and 117.4MB in the end (delta: -65.8MB). Peak memory consumption was 23.3MB. Max. memory is 16.1GB. [2023-08-30 03:02:59,450 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory is still 38.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:02:59,450 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.57ms. Allocated memory is still 75.5MB. Free memory was 51.3MB in the beginning and 53.4MB in the end (delta: -2.1MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2023-08-30 03:02:59,450 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.68ms. Allocated memory is still 75.5MB. Free memory was 53.4MB in the beginning and 51.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:02:59,451 INFO L158 Benchmark]: Boogie Preprocessor took 35.73ms. Allocated memory is still 75.5MB. Free memory was 51.3MB in the beginning and 49.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 03:02:59,451 INFO L158 Benchmark]: RCFGBuilder took 412.28ms. Allocated memory is still 75.5MB. Free memory was 49.6MB in the beginning and 35.2MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 03:02:59,451 INFO L158 Benchmark]: TraceAbstraction took 5206.40ms. Allocated memory was 75.5MB in the beginning and 161.5MB in the end (delta: 86.0MB). Free memory was 34.6MB in the beginning and 120.6MB in the end (delta: -86.0MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2023-08-30 03:02:59,451 INFO L158 Benchmark]: Witness Printer took 26.97ms. Allocated memory is still 161.5MB. Free memory was 120.6MB in the beginning and 117.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 03:02:59,452 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 60.8MB. Free memory is still 38.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 391.57ms. Allocated memory is still 75.5MB. Free memory was 51.3MB in the beginning and 53.4MB in the end (delta: -2.1MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.68ms. Allocated memory is still 75.5MB. Free memory was 53.4MB in the beginning and 51.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.73ms. Allocated memory is still 75.5MB. Free memory was 51.3MB in the beginning and 49.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 412.28ms. Allocated memory is still 75.5MB. Free memory was 49.6MB in the beginning and 35.2MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5206.40ms. Allocated memory was 75.5MB in the beginning and 161.5MB in the end (delta: 86.0MB). Free memory was 34.6MB in the beginning and 120.6MB in the end (delta: -86.0MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * Witness Printer took 26.97ms. Allocated memory is still 161.5MB. Free memory was 120.6MB in the beginning and 117.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 95 PlacesBefore, 34 PlacesAfterwards, 87 TransitionsBefore, 25 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 8 FixpointIterations, 28 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 94 TotalNumberOfCompositions, 3595 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1796, independent: 1667, independent conditional: 0, independent unconditional: 1667, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 854, independent: 820, independent conditional: 0, independent unconditional: 820, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1796, independent: 847, independent conditional: 0, independent unconditional: 847, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 854, unknown conditional: 0, unknown unconditional: 854] , Statistics on independence cache: Total cache size (in pairs): 68, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, 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: -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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 774]: 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 7 procedures, 117 locations, 11 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: 5.1s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 404 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 271 mSDsluCounter, 138 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 77 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 736 IncrementalHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 61 mSDtfsCounter, 736 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=436occurred in iteration=6, InterpolantAutomatonStates: 55, 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, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 698 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 03:02:59,497 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