./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_power.opt.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/safe019_power.opt.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 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 --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 03:14:00,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:14:00,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:14:00,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:14:00,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:14:00,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:14:00,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:14:00,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:14:00,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:14:00,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:14:00,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:14:00,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:14:00,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:14:00,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:14:00,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:14:00,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:14:00,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:14:00,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:14:00,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:14:00,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:14:00,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:14:00,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:14:00,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:14:00,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:14:00,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:14:00,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:14:00,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:14:00,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:14:00,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:14:00,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:14:00,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:14:00,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:14:00,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:14:00,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:14:00,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:14:00,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:14:00,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:14:00,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:14:00,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:14:00,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:14:00,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:14:00,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:14:00,569 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:14:00,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:14:00,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:14:00,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:14:00,570 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:14:00,571 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:14:00,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:14:00,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:14:00,571 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:14:00,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:14:00,571 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:14:00,572 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:14:00,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:14:00,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:14:00,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:14:00,572 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:14:00,572 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:14:00,572 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:14:00,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:14:00,573 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:14:00,573 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:14:00,573 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:14:00,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:14:00,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:14:00,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:14:00,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:14:00,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:14:00,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:14:00,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:14:00,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:14:00,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:14:00,575 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:14:00,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:14:00,575 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:14:00,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:14:00,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:14:00,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:14:00,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:14:00,880 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:14:00,880 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:14:00,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i [2023-08-30 03:14:02,136 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:14:02,387 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:14:02,388 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i [2023-08-30 03:14:02,406 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfd689d11/247c0aea3ec14c1fabb6c53c001b5eb4/FLAG5634afea4 [2023-08-30 03:14:02,419 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfd689d11/247c0aea3ec14c1fabb6c53c001b5eb4 [2023-08-30 03:14:02,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:14:02,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:14:02,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:14:02,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:14:02,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:14:02,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:14:02" (1/1) ... [2023-08-30 03:14:02,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0c5a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:02, skipping insertion in model container [2023-08-30 03:14:02,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:14:02" (1/1) ... [2023-08-30 03:14:02,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:14:02,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:14:02,608 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/safe019_power.opt.i[994,1007] [2023-08-30 03:14:02,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:14:02,849 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:14:02,862 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/safe019_power.opt.i[994,1007] [2023-08-30 03:14:02,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:14:02,982 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:14:02,982 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:14:02,988 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:14:02,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:02 WrapperNode [2023-08-30 03:14:02,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:14:02,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:14:02,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:14:02,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:14:02,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:02" (1/1) ... [2023-08-30 03:14:03,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:02" (1/1) ... [2023-08-30 03:14:03,058 INFO L138 Inliner]: procedures = 177, calls = 88, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 194 [2023-08-30 03:14:03,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:14:03,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:14:03,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:14:03,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:14:03,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:02" (1/1) ... [2023-08-30 03:14:03,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:02" (1/1) ... [2023-08-30 03:14:03,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:02" (1/1) ... [2023-08-30 03:14:03,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:02" (1/1) ... [2023-08-30 03:14:03,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:02" (1/1) ... [2023-08-30 03:14:03,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:02" (1/1) ... [2023-08-30 03:14:03,122 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:02" (1/1) ... [2023-08-30 03:14:03,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:02" (1/1) ... [2023-08-30 03:14:03,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:14:03,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:14:03,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:14:03,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:14:03,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:02" (1/1) ... [2023-08-30 03:14:03,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:14:03,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:14:03,166 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 03:14:03,174 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 03:14:03,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 03:14:03,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 03:14:03,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 03:14:03,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:14:03,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:14:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:14:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 03:14:03,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 03:14:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 03:14:03,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 03:14:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 03:14:03,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 03:14:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-30 03:14:03,202 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-30 03:14:03,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 03:14:03,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 03:14:03,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:14:03,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:14:03,203 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 03:14:03,419 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:14:03,421 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:14:03,980 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:14:04,533 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:14:04,533 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 03:14:04,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:14:04 BoogieIcfgContainer [2023-08-30 03:14:04,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:14:04,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:14:04,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:14:04,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:14:04,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:14:02" (1/3) ... [2023-08-30 03:14:04,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27929d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:14:04, skipping insertion in model container [2023-08-30 03:14:04,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:02" (2/3) ... [2023-08-30 03:14:04,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27929d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:14:04, skipping insertion in model container [2023-08-30 03:14:04,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:14:04" (3/3) ... [2023-08-30 03:14:04,543 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_power.opt.i [2023-08-30 03:14:04,559 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:14:04,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2023-08-30 03:14:04,560 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:14:04,759 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 03:14:04,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 203 transitions, 426 flow [2023-08-30 03:14:04,900 INFO L130 PetriNetUnfolder]: 2/199 cut-off events. [2023-08-30 03:14:04,900 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:14:04,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 199 events. 2/199 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 328 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2023-08-30 03:14:04,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 203 transitions, 426 flow [2023-08-30 03:14:04,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 199 transitions, 410 flow [2023-08-30 03:14:04,925 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:14:04,940 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 199 transitions, 410 flow [2023-08-30 03:14:04,944 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 199 transitions, 410 flow [2023-08-30 03:14:04,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 199 transitions, 410 flow [2023-08-30 03:14:04,996 INFO L130 PetriNetUnfolder]: 2/199 cut-off events. [2023-08-30 03:14:04,996 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:14:04,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 199 events. 2/199 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 325 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2023-08-30 03:14:05,002 INFO L119 LiptonReduction]: Number of co-enabled transitions 10216 [2023-08-30 03:14:16,682 INFO L134 LiptonReduction]: Checked pairs total: 55615 [2023-08-30 03:14:16,683 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-08-30 03:14:16,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:14:16,699 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;@49e36e00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:14:16,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2023-08-30 03:14:16,701 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 03:14:16,701 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:14:16,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:14:16,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 03:14:16,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-30 03:14:16,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:14:16,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1281, now seen corresponding path program 1 times [2023-08-30 03:14:16,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:14:16,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036620871] [2023-08-30 03:14:16,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:14:16,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:14:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:14:16,807 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 03:14:16,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:14:16,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036620871] [2023-08-30 03:14:16,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036620871] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:14:16,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:14:16,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 03:14:16,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282586283] [2023-08-30 03:14:16,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:14:16,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 03:14:16,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:14:16,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 03:14:16,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 03:14:16,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 366 [2023-08-30 03:14:16,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 192 flow. Second operand has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 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 03:14:16,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:14:16,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 366 [2023-08-30 03:14:16,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:14:54,069 INFO L130 PetriNetUnfolder]: 241951/317300 cut-off events. [2023-08-30 03:14:54,070 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2023-08-30 03:14:54,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631380 conditions, 317300 events. 241951/317300 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 18073. Compared 2232899 event pairs, 241951 based on Foata normal form. 4320/142652 useless extension candidates. Maximal degree in co-relation 631368. Up to 312873 conditions per place. [2023-08-30 03:14:56,056 INFO L137 encePairwiseOnDemand]: 333/366 looper letters, 55 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2023-08-30 03:14:56,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 57 transitions, 236 flow [2023-08-30 03:14:56,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 03:14:56,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 03:14:56,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 370 transitions. [2023-08-30 03:14:56,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505464480874317 [2023-08-30 03:14:56,067 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 370 transitions. [2023-08-30 03:14:56,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 370 transitions. [2023-08-30 03:14:56,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:14:56,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 370 transitions. [2023-08-30 03:14:56,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 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 03:14:56,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 366.0) internal successors, (1098), 3 states have internal predecessors, (1098), 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 03:14:56,096 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 366.0) internal successors, (1098), 3 states have internal predecessors, (1098), 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 03:14:56,097 INFO L175 Difference]: Start difference. First operand has 102 places, 90 transitions, 192 flow. Second operand 2 states and 370 transitions. [2023-08-30 03:14:56,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 57 transitions, 236 flow [2023-08-30 03:14:56,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 57 transitions, 232 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:14:56,187 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 122 flow [2023-08-30 03:14:56,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=122, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2023-08-30 03:14:56,191 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -35 predicate places. [2023-08-30 03:14:56,191 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 122 flow [2023-08-30 03:14:56,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 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 03:14:56,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:14:56,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:14:56,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 03:14:56,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-30 03:14:56,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:14:56,194 INFO L85 PathProgramCache]: Analyzing trace with hash 39214187, now seen corresponding path program 1 times [2023-08-30 03:14:56,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:14:56,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455649908] [2023-08-30 03:14:56,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:14:56,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:14:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:14:56,424 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 03:14:56,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:14:56,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455649908] [2023-08-30 03:14:56,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455649908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:14:56,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:14:56,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:14:56,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665492858] [2023-08-30 03:14:56,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:14:56,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:14:56,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:14:56,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:14:56,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:14:56,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 366 [2023-08-30 03:14:56,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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 03:14:56,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:14:56,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 366 [2023-08-30 03:14:56,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:15:20,300 INFO L130 PetriNetUnfolder]: 163615/219861 cut-off events. [2023-08-30 03:15:20,300 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:15:20,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438607 conditions, 219861 events. 163615/219861 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10616. Compared 1565539 event pairs, 97625 based on Foata normal form. 0/121370 useless extension candidates. Maximal degree in co-relation 438604. Up to 122981 conditions per place. [2023-08-30 03:15:21,524 INFO L137 encePairwiseOnDemand]: 345/366 looper letters, 68 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2023-08-30 03:15:21,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 326 flow [2023-08-30 03:15:21,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:15:21,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:15:21,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-08-30 03:15:21,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45264116575591984 [2023-08-30 03:15:21,528 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-08-30 03:15:21,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-08-30 03:15:21,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:15:21,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-08-30 03:15:21,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 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 03:15:21,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:15:21,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:15:21,534 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 122 flow. Second operand 3 states and 497 transitions. [2023-08-30 03:15:21,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 326 flow [2023-08-30 03:15:21,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 80 transitions, 326 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:15:21,536 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 214 flow [2023-08-30 03:15:21,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2023-08-30 03:15:21,537 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -33 predicate places. [2023-08-30 03:15:21,537 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 214 flow [2023-08-30 03:15:21,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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 03:15:21,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:15:21,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:15:21,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 03:15:21,539 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-30 03:15:21,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:15:21,539 INFO L85 PathProgramCache]: Analyzing trace with hash 39214188, now seen corresponding path program 1 times [2023-08-30 03:15:21,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:15:21,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261398706] [2023-08-30 03:15:21,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:15:21,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:15:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:15:21,652 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 03:15:21,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:15:21,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261398706] [2023-08-30 03:15:21,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261398706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:15:21,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:15:21,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:15:21,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441606037] [2023-08-30 03:15:21,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:15:21,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:15:21,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:15:21,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:15:21,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:15:21,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 366 [2023-08-30 03:15:21,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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 03:15:21,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:15:21,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 366 [2023-08-30 03:15:21,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:15:29,346 INFO L130 PetriNetUnfolder]: 42246/59359 cut-off events. [2023-08-30 03:15:29,346 INFO L131 PetriNetUnfolder]: For 15701/15701 co-relation queries the response was YES. [2023-08-30 03:15:29,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160105 conditions, 59359 events. 42246/59359 cut-off events. For 15701/15701 co-relation queries the response was YES. Maximal size of possible extension queue 3209. Compared 400453 event pairs, 33266 based on Foata normal form. 13376/63042 useless extension candidates. Maximal degree in co-relation 160100. Up to 56464 conditions per place. [2023-08-30 03:15:29,643 INFO L137 encePairwiseOnDemand]: 355/366 looper letters, 50 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-08-30 03:15:29,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 296 flow [2023-08-30 03:15:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:15:29,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:15:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-08-30 03:15:29,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307832422586521 [2023-08-30 03:15:29,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-08-30 03:15:29,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-08-30 03:15:29,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:15:29,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-08-30 03:15:29,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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 03:15:29,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:15:29,650 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:15:29,650 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 214 flow. Second operand 3 states and 473 transitions. [2023-08-30 03:15:29,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 296 flow [2023-08-30 03:15:29,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:15:29,776 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 174 flow [2023-08-30 03:15:29,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-30 03:15:29,777 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -43 predicate places. [2023-08-30 03:15:29,777 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 174 flow [2023-08-30 03:15:29,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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 03:15:29,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:15:29,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:15:29,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 03:15:29,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-30 03:15:29,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:15:29,779 INFO L85 PathProgramCache]: Analyzing trace with hash -968223769, now seen corresponding path program 1 times [2023-08-30 03:15:29,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:15:29,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728066060] [2023-08-30 03:15:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:15:29,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:15:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:15:29,929 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 03:15:29,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:15:29,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728066060] [2023-08-30 03:15:29,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728066060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:15:29,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:15:29,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:15:29,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988127409] [2023-08-30 03:15:29,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:15:29,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:15:29,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:15:29,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:15:29,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:15:29,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 366 [2023-08-30 03:15:29,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 03:15:29,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:15:29,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 366 [2023-08-30 03:15:29,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:15:36,180 INFO L130 PetriNetUnfolder]: 35015/49232 cut-off events. [2023-08-30 03:15:36,180 INFO L131 PetriNetUnfolder]: For 5735/5783 co-relation queries the response was YES. [2023-08-30 03:15:36,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125876 conditions, 49232 events. 35015/49232 cut-off events. For 5735/5783 co-relation queries the response was YES. Maximal size of possible extension queue 2679. Compared 332825 event pairs, 9930 based on Foata normal form. 48/37720 useless extension candidates. Maximal degree in co-relation 125871. Up to 40604 conditions per place. [2023-08-30 03:15:36,609 INFO L137 encePairwiseOnDemand]: 363/366 looper letters, 85 selfloop transitions, 2 changer transitions 2/92 dead transitions. [2023-08-30 03:15:36,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 92 transitions, 474 flow [2023-08-30 03:15:36,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:15:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:15:36,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-08-30 03:15:36,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45081967213114754 [2023-08-30 03:15:36,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-08-30 03:15:36,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-08-30 03:15:36,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:15:36,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-08-30 03:15:36,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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 03:15:36,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:15:36,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:15:36,617 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 174 flow. Second operand 3 states and 495 transitions. [2023-08-30 03:15:36,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 92 transitions, 474 flow [2023-08-30 03:15:36,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 92 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:15:36,620 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 173 flow [2023-08-30 03:15:36,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-08-30 03:15:36,621 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -43 predicate places. [2023-08-30 03:15:36,621 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 173 flow [2023-08-30 03:15:36,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 03:15:36,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:15:36,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:15:36,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 03:15:36,622 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-30 03:15:36,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:15:36,623 INFO L85 PathProgramCache]: Analyzing trace with hash -257249967, now seen corresponding path program 1 times [2023-08-30 03:15:36,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:15:36,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552290510] [2023-08-30 03:15:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:15:36,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:15:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:15:36,756 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 03:15:36,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:15:36,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552290510] [2023-08-30 03:15:36,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552290510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:15:36,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:15:36,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:15:36,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994279021] [2023-08-30 03:15:36,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:15:36,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:15:36,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:15:36,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:15:36,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:15:36,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 366 [2023-08-30 03:15:36,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 03:15:36,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:15:36,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 366 [2023-08-30 03:15:36,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:15:42,908 INFO L130 PetriNetUnfolder]: 34038/48863 cut-off events. [2023-08-30 03:15:42,908 INFO L131 PetriNetUnfolder]: For 7461/7461 co-relation queries the response was YES. [2023-08-30 03:15:43,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125807 conditions, 48863 events. 34038/48863 cut-off events. For 7461/7461 co-relation queries the response was YES. Maximal size of possible extension queue 2774. Compared 339444 event pairs, 11946 based on Foata normal form. 0/37735 useless extension candidates. Maximal degree in co-relation 125802. Up to 35309 conditions per place. [2023-08-30 03:15:43,139 INFO L137 encePairwiseOnDemand]: 362/366 looper letters, 77 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-08-30 03:15:43,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 435 flow [2023-08-30 03:15:43,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:15:43,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:15:43,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-08-30 03:15:43,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-30 03:15:43,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-08-30 03:15:43,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-08-30 03:15:43,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:15:43,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-08-30 03:15:43,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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 03:15:43,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:15:43,145 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:15:43,145 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 173 flow. Second operand 3 states and 488 transitions. [2023-08-30 03:15:43,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 435 flow [2023-08-30 03:15:43,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 429 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:15:43,149 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 182 flow [2023-08-30 03:15:43,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-08-30 03:15:43,150 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -43 predicate places. [2023-08-30 03:15:43,150 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 182 flow [2023-08-30 03:15:43,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 03:15:43,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:15:43,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:15:43,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 03:15:43,151 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-30 03:15:43,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:15:43,152 INFO L85 PathProgramCache]: Analyzing trace with hash -257249715, now seen corresponding path program 1 times [2023-08-30 03:15:43,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:15:43,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122170872] [2023-08-30 03:15:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:15:43,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:15:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:15:43,523 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 03:15:43,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:15:43,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122170872] [2023-08-30 03:15:43,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122170872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:15:43,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:15:43,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:15:43,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047389699] [2023-08-30 03:15:43,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:15:43,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:15:43,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:15:43,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:15:43,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:15:43,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 366 [2023-08-30 03:15:43,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 03:15:43,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:15:43,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 366 [2023-08-30 03:15:43,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:15:50,066 INFO L130 PetriNetUnfolder]: 40320/56141 cut-off events. [2023-08-30 03:15:50,066 INFO L131 PetriNetUnfolder]: For 9184/9200 co-relation queries the response was YES. [2023-08-30 03:15:50,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146964 conditions, 56141 events. 40320/56141 cut-off events. For 9184/9200 co-relation queries the response was YES. Maximal size of possible extension queue 2442. Compared 356238 event pairs, 13860 based on Foata normal form. 16/44869 useless extension candidates. Maximal degree in co-relation 146958. Up to 52631 conditions per place. [2023-08-30 03:15:50,343 INFO L137 encePairwiseOnDemand]: 362/366 looper letters, 74 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2023-08-30 03:15:50,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 436 flow [2023-08-30 03:15:50,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:15:50,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:15:50,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-08-30 03:15:50,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43897996357012753 [2023-08-30 03:15:50,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-08-30 03:15:50,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-08-30 03:15:50,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:15:50,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-08-30 03:15:50,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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 03:15:50,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:15:50,349 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:15:50,349 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 182 flow. Second operand 3 states and 482 transitions. [2023-08-30 03:15:50,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 436 flow [2023-08-30 03:15:50,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:15:50,357 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 208 flow [2023-08-30 03:15:50,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-30 03:15:50,358 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -42 predicate places. [2023-08-30 03:15:50,358 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 208 flow [2023-08-30 03:15:50,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 03:15:50,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:15:50,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:15:50,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 03:15:50,359 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-30 03:15:50,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:15:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash 615192729, now seen corresponding path program 1 times [2023-08-30 03:15:50,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:15:50,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476470612] [2023-08-30 03:15:50,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:15:50,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:15:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:15:50,797 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 03:15:50,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:15:50,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476470612] [2023-08-30 03:15:50,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476470612] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:15:50,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:15:50,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:15:50,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485916623] [2023-08-30 03:15:50,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:15:50,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:15:50,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:15:50,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:15:50,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:15:50,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 366 [2023-08-30 03:15:50,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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 03:15:50,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:15:50,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 366 [2023-08-30 03:15:50,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:15:57,770 INFO L130 PetriNetUnfolder]: 40068/55841 cut-off events. [2023-08-30 03:15:57,770 INFO L131 PetriNetUnfolder]: For 11013/11141 co-relation queries the response was YES. [2023-08-30 03:15:57,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150153 conditions, 55841 events. 40068/55841 cut-off events. For 11013/11141 co-relation queries the response was YES. Maximal size of possible extension queue 2461. Compared 356604 event pairs, 11139 based on Foata normal form. 96/44845 useless extension candidates. Maximal degree in co-relation 150146. Up to 51165 conditions per place. [2023-08-30 03:15:58,030 INFO L137 encePairwiseOnDemand]: 362/366 looper letters, 78 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2023-08-30 03:15:58,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 84 transitions, 468 flow [2023-08-30 03:15:58,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:15:58,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:15:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-08-30 03:15:58,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43897996357012753 [2023-08-30 03:15:58,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-08-30 03:15:58,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-08-30 03:15:58,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:15:58,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-08-30 03:15:58,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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 03:15:58,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:15:58,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:15:58,037 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 208 flow. Second operand 3 states and 482 transitions. [2023-08-30 03:15:58,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 84 transitions, 468 flow [2023-08-30 03:15:58,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 84 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:15:58,042 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 228 flow [2023-08-30 03:15:58,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-08-30 03:15:58,043 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -40 predicate places. [2023-08-30 03:15:58,043 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 228 flow [2023-08-30 03:15:58,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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 03:15:58,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:15:58,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:15:58,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 03:15:58,044 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-30 03:15:58,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:15:58,044 INFO L85 PathProgramCache]: Analyzing trace with hash 48665703, now seen corresponding path program 1 times [2023-08-30 03:15:58,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:15:58,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346307477] [2023-08-30 03:15:58,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:15:58,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:15:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:15:58,276 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 03:15:58,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:15:58,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346307477] [2023-08-30 03:15:58,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346307477] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:15:58,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:15:58,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:15:58,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730882383] [2023-08-30 03:15:58,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:15:58,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:15:58,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:15:58,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:15:58,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:15:58,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 366 [2023-08-30 03:15:58,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 132.5) internal successors, (795), 6 states have internal predecessors, (795), 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 03:15:58,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:15:58,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 366 [2023-08-30 03:15:58,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:16:05,105 INFO L130 PetriNetUnfolder]: 38056/53455 cut-off events. [2023-08-30 03:16:05,106 INFO L131 PetriNetUnfolder]: For 16011/16011 co-relation queries the response was YES. [2023-08-30 03:16:05,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149801 conditions, 53455 events. 38056/53455 cut-off events. For 16011/16011 co-relation queries the response was YES. Maximal size of possible extension queue 2464. Compared 344599 event pairs, 13692 based on Foata normal form. 0/42927 useless extension candidates. Maximal degree in co-relation 149793. Up to 20966 conditions per place. [2023-08-30 03:16:05,578 INFO L137 encePairwiseOnDemand]: 354/366 looper letters, 80 selfloop transitions, 14 changer transitions 0/96 dead transitions. [2023-08-30 03:16:05,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 96 transitions, 547 flow [2023-08-30 03:16:05,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:16:05,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:16:05,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 733 transitions. [2023-08-30 03:16:05,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005464480874317 [2023-08-30 03:16:05,581 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 733 transitions. [2023-08-30 03:16:05,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 733 transitions. [2023-08-30 03:16:05,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:16:05,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 733 transitions. [2023-08-30 03:16:05,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 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 03:16:05,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 366.0) internal successors, (2196), 6 states have internal predecessors, (2196), 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 03:16:05,586 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 366.0) internal successors, (2196), 6 states have internal predecessors, (2196), 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 03:16:05,586 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 228 flow. Second operand 5 states and 733 transitions. [2023-08-30 03:16:05,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 96 transitions, 547 flow [2023-08-30 03:16:05,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 96 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:16:05,590 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 318 flow [2023-08-30 03:16:05,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2023-08-30 03:16:05,591 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -36 predicate places. [2023-08-30 03:16:05,591 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 318 flow [2023-08-30 03:16:05,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.5) internal successors, (795), 6 states have internal predecessors, (795), 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 03:16:05,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:16:05,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:16:05,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 03:16:05,592 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-30 03:16:05,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:16:05,592 INFO L85 PathProgramCache]: Analyzing trace with hash 615192478, now seen corresponding path program 1 times [2023-08-30 03:16:05,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:16:05,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269575526] [2023-08-30 03:16:05,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:16:05,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:16:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:16:05,892 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 03:16:05,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:16:05,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269575526] [2023-08-30 03:16:05,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269575526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:16:05,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:16:05,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:16:05,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518071412] [2023-08-30 03:16:05,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:16:05,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:16:05,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:16:05,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:16:05,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:16:05,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 366 [2023-08-30 03:16:05,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 318 flow. Second operand has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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 03:16:05,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:16:05,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 366 [2023-08-30 03:16:05,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:16:12,652 INFO L130 PetriNetUnfolder]: 36314/51473 cut-off events. [2023-08-30 03:16:12,652 INFO L131 PetriNetUnfolder]: For 44456/44456 co-relation queries the response was YES. [2023-08-30 03:16:12,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159448 conditions, 51473 events. 36314/51473 cut-off events. For 44456/44456 co-relation queries the response was YES. Maximal size of possible extension queue 2441. Compared 337422 event pairs, 15784 based on Foata normal form. 240/45870 useless extension candidates. Maximal degree in co-relation 159438. Up to 38172 conditions per place. [2023-08-30 03:16:12,934 INFO L137 encePairwiseOnDemand]: 363/366 looper letters, 76 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2023-08-30 03:16:12,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 550 flow [2023-08-30 03:16:12,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:16:12,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:16:12,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 621 transitions. [2023-08-30 03:16:12,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42418032786885246 [2023-08-30 03:16:12,936 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 621 transitions. [2023-08-30 03:16:12,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 621 transitions. [2023-08-30 03:16:12,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:16:12,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 621 transitions. [2023-08-30 03:16:12,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 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 03:16:12,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 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 03:16:12,940 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 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 03:16:12,940 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 318 flow. Second operand 4 states and 621 transitions. [2023-08-30 03:16:12,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 550 flow [2023-08-30 03:16:13,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 86 transitions, 539 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 03:16:13,306 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 313 flow [2023-08-30 03:16:13,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-08-30 03:16:13,307 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -37 predicate places. [2023-08-30 03:16:13,307 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 313 flow [2023-08-30 03:16:13,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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 03:16:13,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:16:13,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:16:13,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 03:16:13,309 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-30 03:16:13,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:16:13,309 INFO L85 PathProgramCache]: Analyzing trace with hash 615065257, now seen corresponding path program 1 times [2023-08-30 03:16:13,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:16:13,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325472798] [2023-08-30 03:16:13,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:16:13,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:16:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:16:13,490 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 03:16:13,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:16:13,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325472798] [2023-08-30 03:16:13,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325472798] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:16:13,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:16:13,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:16:13,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574796643] [2023-08-30 03:16:13,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:16:13,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:16:13,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:16:13,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:16:13,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:16:13,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 366 [2023-08-30 03:16:13,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:13,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:16:13,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 366 [2023-08-30 03:16:13,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:16:20,235 INFO L130 PetriNetUnfolder]: 35844/50649 cut-off events. [2023-08-30 03:16:20,235 INFO L131 PetriNetUnfolder]: For 48872/48960 co-relation queries the response was YES. [2023-08-30 03:16:20,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157733 conditions, 50649 events. 35844/50649 cut-off events. For 48872/48960 co-relation queries the response was YES. Maximal size of possible extension queue 2444. Compared 342993 event pairs, 10599 based on Foata normal form. 160/44934 useless extension candidates. Maximal degree in co-relation 157724. Up to 41180 conditions per place. [2023-08-30 03:16:20,522 INFO L137 encePairwiseOnDemand]: 363/366 looper letters, 105 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-08-30 03:16:20,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 112 transitions, 767 flow [2023-08-30 03:16:20,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:16:20,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:16:20,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2023-08-30 03:16:20,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453551912568306 [2023-08-30 03:16:20,524 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2023-08-30 03:16:20,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2023-08-30 03:16:20,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:16:20,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2023-08-30 03:16:20,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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 03:16:20,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:16:20,526 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:16:20,526 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 313 flow. Second operand 3 states and 489 transitions. [2023-08-30 03:16:20,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 112 transitions, 767 flow [2023-08-30 03:16:20,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 112 transitions, 757 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:16:20,851 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 315 flow [2023-08-30 03:16:20,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2023-08-30 03:16:20,852 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -36 predicate places. [2023-08-30 03:16:20,852 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 315 flow [2023-08-30 03:16:20,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:20,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:16:20,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:16:20,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 03:16:20,853 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-30 03:16:20,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:16:20,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1887153147, now seen corresponding path program 1 times [2023-08-30 03:16:20,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:16:20,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761201155] [2023-08-30 03:16:20,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:16:20,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:16:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:16:21,119 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 03:16:21,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:16:21,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761201155] [2023-08-30 03:16:21,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761201155] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:16:21,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:16:21,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:16:21,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968028612] [2023-08-30 03:16:21,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:16:21,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:16:21,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:16:21,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:16:21,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:16:21,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 366 [2023-08-30 03:16:21,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 03:16:21,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:16:21,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 366 [2023-08-30 03:16:21,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:16:27,896 INFO L130 PetriNetUnfolder]: 35969/51020 cut-off events. [2023-08-30 03:16:27,897 INFO L131 PetriNetUnfolder]: For 40834/40834 co-relation queries the response was YES. [2023-08-30 03:16:28,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163665 conditions, 51020 events. 35969/51020 cut-off events. For 40834/40834 co-relation queries the response was YES. Maximal size of possible extension queue 2438. Compared 334927 event pairs, 15604 based on Foata normal form. 36/45213 useless extension candidates. Maximal degree in co-relation 163655. Up to 37884 conditions per place. [2023-08-30 03:16:28,221 INFO L137 encePairwiseOnDemand]: 363/366 looper letters, 75 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2023-08-30 03:16:28,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 85 transitions, 546 flow [2023-08-30 03:16:28,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:16:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:16:28,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-30 03:16:28,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435336976320583 [2023-08-30 03:16:28,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-30 03:16:28,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-30 03:16:28,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:16:28,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-30 03:16:28,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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 03:16:28,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:16:28,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:16:28,227 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 315 flow. Second operand 3 states and 487 transitions. [2023-08-30 03:16:28,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 85 transitions, 546 flow [2023-08-30 03:16:28,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 540 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:16:28,765 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 328 flow [2023-08-30 03:16:28,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2023-08-30 03:16:28,766 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -35 predicate places. [2023-08-30 03:16:28,766 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 328 flow [2023-08-30 03:16:28,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 03:16:28,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:16:28,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:16:28,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 03:16:28,767 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-30 03:16:28,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:16:28,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1891124355, now seen corresponding path program 1 times [2023-08-30 03:16:28,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:16:28,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835232073] [2023-08-30 03:16:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:16:28,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:16:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:16:28,895 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 03:16:28,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:16:28,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835232073] [2023-08-30 03:16:28,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835232073] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:16:28,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:16:28,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:16:28,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221041422] [2023-08-30 03:16:28,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:16:28,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:16:28,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:16:28,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:16:28,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:16:28,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 366 [2023-08-30 03:16:28,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 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 03:16:28,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:16:28,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 366 [2023-08-30 03:16:28,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:16:34,747 INFO L130 PetriNetUnfolder]: 31769/44682 cut-off events. [2023-08-30 03:16:34,747 INFO L131 PetriNetUnfolder]: For 40133/40133 co-relation queries the response was YES. [2023-08-30 03:16:34,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146357 conditions, 44682 events. 31769/44682 cut-off events. For 40133/40133 co-relation queries the response was YES. Maximal size of possible extension queue 2231. Compared 281841 event pairs, 10035 based on Foata normal form. 360/39838 useless extension candidates. Maximal degree in co-relation 146346. Up to 22169 conditions per place. [2023-08-30 03:16:34,964 INFO L137 encePairwiseOnDemand]: 347/366 looper letters, 73 selfloop transitions, 21 changer transitions 0/96 dead transitions. [2023-08-30 03:16:34,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 692 flow [2023-08-30 03:16:34,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:16:34,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:16:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 603 transitions. [2023-08-30 03:16:34,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41188524590163933 [2023-08-30 03:16:34,966 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 603 transitions. [2023-08-30 03:16:34,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 603 transitions. [2023-08-30 03:16:34,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:16:34,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 603 transitions. [2023-08-30 03:16:34,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 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 03:16:34,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 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 03:16:34,970 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 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 03:16:34,970 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 328 flow. Second operand 4 states and 603 transitions. [2023-08-30 03:16:34,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 692 flow [2023-08-30 03:16:35,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 96 transitions, 674 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:16:35,203 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 503 flow [2023-08-30 03:16:35,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=503, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2023-08-30 03:16:35,204 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -32 predicate places. [2023-08-30 03:16:35,204 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 503 flow [2023-08-30 03:16:35,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 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 03:16:35,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:16:35,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:16:35,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 03:16:35,205 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-30 03:16:35,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:16:35,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1976179172, now seen corresponding path program 1 times [2023-08-30 03:16:35,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:16:35,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101094154] [2023-08-30 03:16:35,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:16:35,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:16:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:16:35,479 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 03:16:35,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:16:35,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101094154] [2023-08-30 03:16:35,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101094154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:16:35,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:16:35,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:16:35,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967804112] [2023-08-30 03:16:35,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:16:35,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:16:35,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:16:35,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:16:35,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:16:35,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 366 [2023-08-30 03:16:35,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 503 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 03:16:35,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:16:35,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 366 [2023-08-30 03:16:35,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:16:43,969 INFO L130 PetriNetUnfolder]: 48927/68560 cut-off events. [2023-08-30 03:16:43,970 INFO L131 PetriNetUnfolder]: For 116812/116940 co-relation queries the response was YES. [2023-08-30 03:16:44,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256985 conditions, 68560 events. 48927/68560 cut-off events. For 116812/116940 co-relation queries the response was YES. Maximal size of possible extension queue 3356. Compared 460746 event pairs, 19620 based on Foata normal form. 272/60400 useless extension candidates. Maximal degree in co-relation 256973. Up to 39512 conditions per place. [2023-08-30 03:16:44,405 INFO L137 encePairwiseOnDemand]: 363/366 looper letters, 104 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-08-30 03:16:44,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 949 flow [2023-08-30 03:16:44,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:16:44,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:16:44,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-30 03:16:44,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43989071038251365 [2023-08-30 03:16:44,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-30 03:16:44,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-30 03:16:44,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:16:44,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-30 03:16:44,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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 03:16:44,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:16:44,411 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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 03:16:44,411 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 503 flow. Second operand 3 states and 483 transitions. [2023-08-30 03:16:44,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 949 flow [2023-08-30 03:16:44,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 110 transitions, 945 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:16:44,932 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 511 flow [2023-08-30 03:16:44,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=511, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2023-08-30 03:16:44,932 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -30 predicate places. [2023-08-30 03:16:44,932 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 511 flow [2023-08-30 03:16:44,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 03:16:44,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:16:44,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:16:44,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 03:16:44,933 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-30 03:16:44,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:16:44,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1966221305, now seen corresponding path program 1 times [2023-08-30 03:16:44,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:16:44,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232833422] [2023-08-30 03:16:44,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:16:44,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:16:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:16:45,200 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 03:16:45,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:16:45,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232833422] [2023-08-30 03:16:45,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232833422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:16:45,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:16:45,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:16:45,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606051502] [2023-08-30 03:16:45,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:16:45,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:16:45,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:16:45,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:16:45,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:16:45,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 366 [2023-08-30 03:16:45,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 511 flow. Second operand has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 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 03:16:45,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:16:45,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 366 [2023-08-30 03:16:45,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:17:00,189 INFO L130 PetriNetUnfolder]: 84398/118677 cut-off events. [2023-08-30 03:17:00,189 INFO L131 PetriNetUnfolder]: For 236323/237249 co-relation queries the response was YES. [2023-08-30 03:17:00,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455212 conditions, 118677 events. 84398/118677 cut-off events. For 236323/237249 co-relation queries the response was YES. Maximal size of possible extension queue 5939. Compared 866652 event pairs, 21352 based on Foata normal form. 503/103982 useless extension candidates. Maximal degree in co-relation 455198. Up to 61206 conditions per place. [2023-08-30 03:17:00,996 INFO L137 encePairwiseOnDemand]: 361/366 looper letters, 152 selfloop transitions, 5 changer transitions 0/160 dead transitions. [2023-08-30 03:17:00,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 160 transitions, 1434 flow [2023-08-30 03:17:00,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:17:00,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:17:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 638 transitions. [2023-08-30 03:17:00,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43579234972677594 [2023-08-30 03:17:00,998 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 638 transitions. [2023-08-30 03:17:00,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 638 transitions. [2023-08-30 03:17:00,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:17:00,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 638 transitions. [2023-08-30 03:17:01,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.5) internal successors, (638), 4 states have internal predecessors, (638), 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 03:17:01,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 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 03:17:01,002 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 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 03:17:01,002 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 511 flow. Second operand 4 states and 638 transitions. [2023-08-30 03:17:01,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 160 transitions, 1434 flow [2023-08-30 03:17:02,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 160 transitions, 1421 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 03:17:02,855 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 525 flow [2023-08-30 03:17:02,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=525, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2023-08-30 03:17:02,855 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -27 predicate places. [2023-08-30 03:17:02,856 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 525 flow [2023-08-30 03:17:02,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 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 03:17:02,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:17:02,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:17:02,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 03:17:02,857 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-30 03:17:02,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:17:02,857 INFO L85 PathProgramCache]: Analyzing trace with hash -476739357, now seen corresponding path program 2 times [2023-08-30 03:17:02,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:17:02,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882204592] [2023-08-30 03:17:02,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:17:02,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:17:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:17:04,586 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 03:17:04,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:17:04,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882204592] [2023-08-30 03:17:04,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882204592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:17:04,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:17:04,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 03:17:04,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015570829] [2023-08-30 03:17:04,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:17:04,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 03:17:04,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:17:04,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 03:17:04,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-30 03:17:04,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 366 [2023-08-30 03:17:04,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 525 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 states have internal predecessors, (1197), 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 03:17:04,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:17:04,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 366 [2023-08-30 03:17:04,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand