./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.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 e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:38:49,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:38:49,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:38:49,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:38:49,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:38:49,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:38:49,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:38:49,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:38:49,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:38:49,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:38:49,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:38:49,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:38:49,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:38:49,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:38:49,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:38:49,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:38:49,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:38:49,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:38:49,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:38:49,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:38:49,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:38:49,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:38:49,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:38:49,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:38:49,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:38:49,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:38:49,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:38:49,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:38:49,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:38:49,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:38:49,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:38:49,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:38:49,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:38:49,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:38:49,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:38:49,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:38:49,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:38:49,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:38:49,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:38:49,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:38:49,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:38:49,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:38:49,640 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:38:49,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:38:49,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:38:49,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:38:49,643 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:38:49,643 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:38:49,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:38:49,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:38:49,644 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:38:49,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:38:49,645 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:38:49,645 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:38:49,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:38:49,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:38:49,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:38:49,646 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:38:49,646 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:38:49,646 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:38:49,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:38:49,647 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:38:49,647 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:38:49,647 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:38:49,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:38:49,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:38:49,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:38:49,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:38:49,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:38:49,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:38:49,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:38:49,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:38:49,649 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:38:49,649 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:38:49,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:38:49,649 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:38:49,649 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:38:49,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:38:49,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:38:49,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:38:49,972 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:38:49,972 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:38:49,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-31 23:38:51,093 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:38:51,328 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:38:51,329 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-31 23:38:51,342 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80ff2c61/dfefbdab9c06488c9d3606067bb3730a/FLAGc78853851 [2023-08-31 23:38:51,353 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80ff2c61/dfefbdab9c06488c9d3606067bb3730a [2023-08-31 23:38:51,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:38:51,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:38:51,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:38:51,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:38:51,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:38:51,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:38:51" (1/1) ... [2023-08-31 23:38:51,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5d341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:51, skipping insertion in model container [2023-08-31 23:38:51,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:38:51" (1/1) ... [2023-08-31 23:38:51,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:38:51,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:38:51,572 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-31 23:38:51,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:38:51,755 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:38:51,768 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-31 23:38:51,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:38:51,844 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:38:51,844 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:38:51,849 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:38:51,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:51 WrapperNode [2023-08-31 23:38:51,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:38:51,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:38:51,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:38:51,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:38:51,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:51" (1/1) ... [2023-08-31 23:38:51,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:51" (1/1) ... [2023-08-31 23:38:51,920 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-31 23:38:51,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:38:51,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:38:51,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:38:51,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:38:51,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:51" (1/1) ... [2023-08-31 23:38:51,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:51" (1/1) ... [2023-08-31 23:38:51,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:51" (1/1) ... [2023-08-31 23:38:51,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:51" (1/1) ... [2023-08-31 23:38:51,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:51" (1/1) ... [2023-08-31 23:38:51,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:51" (1/1) ... [2023-08-31 23:38:51,981 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:51" (1/1) ... [2023-08-31 23:38:51,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:51" (1/1) ... [2023-08-31 23:38:51,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:38:51,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:38:51,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:38:51,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:38:51,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:51" (1/1) ... [2023-08-31 23:38:52,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:38:52,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:38:52,024 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) [2023-08-31 23:38:52,036 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 [2023-08-31 23:38:52,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:38:52,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:38:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:38:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:38:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:38:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:38:52,060 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:38:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:38:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:38:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-31 23:38:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-31 23:38:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:38:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:38:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:38:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:38:52,063 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:38:52,212 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:38:52,214 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:38:52,368 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:38:52,380 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:38:52,380 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:38:52,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:38:52 BoogieIcfgContainer [2023-08-31 23:38:52,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:38:52,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:38:52,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:38:52,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:38:52,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:38:51" (1/3) ... [2023-08-31 23:38:52,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ea821c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:38:52, skipping insertion in model container [2023-08-31 23:38:52,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:51" (2/3) ... [2023-08-31 23:38:52,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ea821c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:38:52, skipping insertion in model container [2023-08-31 23:38:52,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:38:52" (3/3) ... [2023-08-31 23:38:52,390 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-31 23:38:52,406 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:38:52,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-31 23:38:52,406 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:38:52,462 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:38:52,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 203 flow [2023-08-31 23:38:52,561 INFO L130 PetriNetUnfolder]: 2/91 cut-off events. [2023-08-31 23:38:52,561 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:38:52,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 2/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2023-08-31 23:38:52,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 94 transitions, 203 flow [2023-08-31 23:38:52,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 87 transitions, 183 flow [2023-08-31 23:38:52,574 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:38:52,585 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 87 transitions, 183 flow [2023-08-31 23:38:52,588 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 87 transitions, 183 flow [2023-08-31 23:38:52,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 87 transitions, 183 flow [2023-08-31 23:38:52,623 INFO L130 PetriNetUnfolder]: 2/87 cut-off events. [2023-08-31 23:38:52,624 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:38:52,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-08-31 23:38:52,626 INFO L119 LiptonReduction]: Number of co-enabled transitions 1416 [2023-08-31 23:38:55,271 INFO L134 LiptonReduction]: Checked pairs total: 3009 [2023-08-31 23:38:55,271 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-08-31 23:38:55,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:38:55,294 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;@2726c56c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:38:55,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-31 23:38:55,296 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 23:38:55,296 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:38:55,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:55,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:38:55,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:55,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:55,302 INFO L85 PathProgramCache]: Analyzing trace with hash 337, now seen corresponding path program 1 times [2023-08-31 23:38:55,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:55,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260778765] [2023-08-31 23:38:55,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:55,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:55,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:55,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260778765] [2023-08-31 23:38:55,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260778765] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:55,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:55,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:38:55,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19136106] [2023-08-31 23:38:55,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:55,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:38:55,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:55,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:38:55,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:38:55,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 186 [2023-08-31 23:38:55,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 57 flow. Second operand has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:55,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:55,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 186 [2023-08-31 23:38:55,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:55,509 INFO L130 PetriNetUnfolder]: 218/362 cut-off events. [2023-08-31 23:38:55,509 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-31 23:38:55,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 744 conditions, 362 events. 218/362 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1449 event pairs, 218 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 733. Up to 352 conditions per place. [2023-08-31 23:38:55,513 INFO L137 encePairwiseOnDemand]: 179/186 looper letters, 15 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-31 23:38:55,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 73 flow [2023-08-31 23:38:55,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:38:55,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:38:55,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 198 transitions. [2023-08-31 23:38:55,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2023-08-31 23:38:55,527 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 198 transitions. [2023-08-31 23:38:55,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 198 transitions. [2023-08-31 23:38:55,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:55,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 198 transitions. [2023-08-31 23:38:55,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 99.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:55,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:55,544 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:55,545 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 57 flow. Second operand 2 states and 198 transitions. [2023-08-31 23:38:55,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 73 flow [2023-08-31 23:38:55,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 70 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:38:55,550 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2023-08-31 23:38:55,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-08-31 23:38:55,555 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -8 predicate places. [2023-08-31 23:38:55,555 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2023-08-31 23:38:55,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:55,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:55,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:55,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:38:55,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:55,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:55,561 INFO L85 PathProgramCache]: Analyzing trace with hash 246718762, now seen corresponding path program 1 times [2023-08-31 23:38:55,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:55,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829132123] [2023-08-31 23:38:55,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:55,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:56,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:56,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829132123] [2023-08-31 23:38:56,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829132123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:56,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:56,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:38:56,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241579760] [2023-08-31 23:38:56,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:56,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:38:56,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:56,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:38:56,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:38:56,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 186 [2023-08-31 23:38:56,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:56,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:56,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 186 [2023-08-31 23:38:56,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:56,150 INFO L130 PetriNetUnfolder]: 331/574 cut-off events. [2023-08-31 23:38:56,150 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:38:56,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 574 events. 331/574 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2609 event pairs, 111 based on Foata normal form. 0/541 useless extension candidates. Maximal degree in co-relation 1146. Up to 437 conditions per place. [2023-08-31 23:38:56,157 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 24 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2023-08-31 23:38:56,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 30 transitions, 128 flow [2023-08-31 23:38:56,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:38:56,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:38:56,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-08-31 23:38:56,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946236559139785 [2023-08-31 23:38:56,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-08-31 23:38:56,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-08-31 23:38:56,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:56,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-08-31 23:38:56,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:56,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:56,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:56,169 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 276 transitions. [2023-08-31 23:38:56,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 30 transitions, 128 flow [2023-08-31 23:38:56,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:38:56,171 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 78 flow [2023-08-31 23:38:56,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-08-31 23:38:56,172 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-08-31 23:38:56,172 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 78 flow [2023-08-31 23:38:56,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:56,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:56,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:56,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:38:56,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:56,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:56,176 INFO L85 PathProgramCache]: Analyzing trace with hash 246718772, now seen corresponding path program 1 times [2023-08-31 23:38:56,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:56,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556981054] [2023-08-31 23:38:56,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:56,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:56,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:56,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556981054] [2023-08-31 23:38:56,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556981054] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:56,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:56,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:38:56,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100974364] [2023-08-31 23:38:56,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:56,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:38:56,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:56,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:38:56,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:38:56,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 186 [2023-08-31 23:38:56,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:56,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:56,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 186 [2023-08-31 23:38:56,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:56,786 INFO L130 PetriNetUnfolder]: 247/426 cut-off events. [2023-08-31 23:38:56,786 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-08-31 23:38:56,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 426 events. 247/426 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1836 event pairs, 196 based on Foata normal form. 15/410 useless extension candidates. Maximal degree in co-relation 1079. Up to 343 conditions per place. [2023-08-31 23:38:56,789 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 23 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2023-08-31 23:38:56,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 33 transitions, 176 flow [2023-08-31 23:38:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:38:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:38:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-08-31 23:38:56,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2023-08-31 23:38:56,791 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-08-31 23:38:56,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-08-31 23:38:56,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:56,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-08-31 23:38:56,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:56,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:56,795 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:56,795 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 78 flow. Second operand 5 states and 400 transitions. [2023-08-31 23:38:56,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 33 transitions, 176 flow [2023-08-31 23:38:56,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:38:56,798 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 107 flow [2023-08-31 23:38:56,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-08-31 23:38:56,799 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-08-31 23:38:56,799 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 107 flow [2023-08-31 23:38:56,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:56,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:56,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:56,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:38:56,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:56,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:56,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1941121925, now seen corresponding path program 1 times [2023-08-31 23:38:56,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:56,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596203149] [2023-08-31 23:38:56,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:56,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:57,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:57,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596203149] [2023-08-31 23:38:57,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596203149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:57,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:57,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:38:57,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919284956] [2023-08-31 23:38:57,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:57,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:38:57,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:57,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:38:57,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:38:57,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 186 [2023-08-31 23:38:57,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:57,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:57,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 186 [2023-08-31 23:38:57,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:57,248 INFO L130 PetriNetUnfolder]: 181/333 cut-off events. [2023-08-31 23:38:57,249 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-31 23:38:57,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874 conditions, 333 events. 181/333 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1388 event pairs, 33 based on Foata normal form. 6/312 useless extension candidates. Maximal degree in co-relation 866. Up to 210 conditions per place. [2023-08-31 23:38:57,251 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 22 selfloop transitions, 7 changer transitions 0/32 dead transitions. [2023-08-31 23:38:57,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 181 flow [2023-08-31 23:38:57,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:38:57,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:38:57,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 398 transitions. [2023-08-31 23:38:57,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42795698924731185 [2023-08-31 23:38:57,254 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 398 transitions. [2023-08-31 23:38:57,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 398 transitions. [2023-08-31 23:38:57,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:57,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 398 transitions. [2023-08-31 23:38:57,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:57,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:57,257 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:57,258 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 107 flow. Second operand 5 states and 398 transitions. [2023-08-31 23:38:57,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 181 flow [2023-08-31 23:38:57,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:38:57,260 INFO L231 Difference]: Finished difference. Result has 38 places, 24 transitions, 124 flow [2023-08-31 23:38:57,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=38, PETRI_TRANSITIONS=24} [2023-08-31 23:38:57,261 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2023-08-31 23:38:57,261 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 24 transitions, 124 flow [2023-08-31 23:38:57,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:57,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:57,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:57,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:38:57,262 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:57,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:57,262 INFO L85 PathProgramCache]: Analyzing trace with hash 45236133, now seen corresponding path program 1 times [2023-08-31 23:38:57,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:57,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383215854] [2023-08-31 23:38:57,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:57,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:57,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:57,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383215854] [2023-08-31 23:38:57,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383215854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:57,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:57,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:38:57,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558227292] [2023-08-31 23:38:57,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:57,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:38:57,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:57,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:38:57,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:38:57,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 186 [2023-08-31 23:38:57,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 24 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 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) [2023-08-31 23:38:57,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:57,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 186 [2023-08-31 23:38:57,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:57,872 INFO L130 PetriNetUnfolder]: 183/341 cut-off events. [2023-08-31 23:38:57,872 INFO L131 PetriNetUnfolder]: For 323/323 co-relation queries the response was YES. [2023-08-31 23:38:57,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 341 events. 183/341 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1493 event pairs, 70 based on Foata normal form. 13/332 useless extension candidates. Maximal degree in co-relation 935. Up to 190 conditions per place. [2023-08-31 23:38:57,875 INFO L137 encePairwiseOnDemand]: 179/186 looper letters, 24 selfloop transitions, 7 changer transitions 12/46 dead transitions. [2023-08-31 23:38:57,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 294 flow [2023-08-31 23:38:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:38:57,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:38:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 523 transitions. [2023-08-31 23:38:57,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40168970814132104 [2023-08-31 23:38:57,877 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 523 transitions. [2023-08-31 23:38:57,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 523 transitions. [2023-08-31 23:38:57,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:57,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 523 transitions. [2023-08-31 23:38:57,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:57,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:57,881 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:57,881 INFO L175 Difference]: Start difference. First operand has 38 places, 24 transitions, 124 flow. Second operand 7 states and 523 transitions. [2023-08-31 23:38:57,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 294 flow [2023-08-31 23:38:57,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 272 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:38:57,884 INFO L231 Difference]: Finished difference. Result has 44 places, 27 transitions, 162 flow [2023-08-31 23:38:57,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2023-08-31 23:38:57,885 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-08-31 23:38:57,885 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 27 transitions, 162 flow [2023-08-31 23:38:57,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 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) [2023-08-31 23:38:57,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:57,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:57,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:38:57,885 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:57,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:57,886 INFO L85 PathProgramCache]: Analyzing trace with hash 64941153, now seen corresponding path program 1 times [2023-08-31 23:38:57,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:57,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567647517] [2023-08-31 23:38:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:57,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:58,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:58,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567647517] [2023-08-31 23:38:58,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567647517] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:58,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:58,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:38:58,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241394975] [2023-08-31 23:38:58,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:58,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:38:58,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:58,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:38:58,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:38:58,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 186 [2023-08-31 23:38:58,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 27 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:58,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:58,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 186 [2023-08-31 23:38:58,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:58,431 INFO L130 PetriNetUnfolder]: 236/424 cut-off events. [2023-08-31 23:38:58,431 INFO L131 PetriNetUnfolder]: For 622/622 co-relation queries the response was YES. [2023-08-31 23:38:58,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 424 events. 236/424 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1798 event pairs, 106 based on Foata normal form. 14/406 useless extension candidates. Maximal degree in co-relation 1294. Up to 242 conditions per place. [2023-08-31 23:38:58,434 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 25 selfloop transitions, 7 changer transitions 8/42 dead transitions. [2023-08-31 23:38:58,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 299 flow [2023-08-31 23:38:58,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:38:58,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:38:58,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2023-08-31 23:38:58,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4182795698924731 [2023-08-31 23:38:58,436 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 389 transitions. [2023-08-31 23:38:58,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 389 transitions. [2023-08-31 23:38:58,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:58,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 389 transitions. [2023-08-31 23:38:58,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:58,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:58,439 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:58,440 INFO L175 Difference]: Start difference. First operand has 44 places, 27 transitions, 162 flow. Second operand 5 states and 389 transitions. [2023-08-31 23:38:58,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 299 flow [2023-08-31 23:38:58,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 283 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-31 23:38:58,443 INFO L231 Difference]: Finished difference. Result has 44 places, 25 transitions, 166 flow [2023-08-31 23:38:58,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=44, PETRI_TRANSITIONS=25} [2023-08-31 23:38:58,444 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-08-31 23:38:58,445 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 25 transitions, 166 flow [2023-08-31 23:38:58,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:58,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:58,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:58,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:38:58,446 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:58,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:58,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1891532903, now seen corresponding path program 2 times [2023-08-31 23:38:58,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:58,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760156152] [2023-08-31 23:38:58,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:58,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:58,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:58,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:58,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760156152] [2023-08-31 23:38:58,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760156152] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:58,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:58,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:38:58,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163182786] [2023-08-31 23:38:58,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:58,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:38:58,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:58,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:38:58,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:38:58,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 186 [2023-08-31 23:38:58,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 25 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 71.83333333333333) internal successors, (431), 6 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) [2023-08-31 23:38:58,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:58,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 186 [2023-08-31 23:38:58,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:59,012 INFO L130 PetriNetUnfolder]: 240/433 cut-off events. [2023-08-31 23:38:59,012 INFO L131 PetriNetUnfolder]: For 578/578 co-relation queries the response was YES. [2023-08-31 23:38:59,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1306 conditions, 433 events. 240/433 cut-off events. For 578/578 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1764 event pairs, 114 based on Foata normal form. 14/423 useless extension candidates. Maximal degree in co-relation 1293. Up to 281 conditions per place. [2023-08-31 23:38:59,029 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 17 selfloop transitions, 4 changer transitions 15/38 dead transitions. [2023-08-31 23:38:59,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 38 transitions, 277 flow [2023-08-31 23:38:59,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:38:59,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:38:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 454 transitions. [2023-08-31 23:38:59,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068100358422939 [2023-08-31 23:38:59,031 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 454 transitions. [2023-08-31 23:38:59,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 454 transitions. [2023-08-31 23:38:59,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:59,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 454 transitions. [2023-08-31 23:38:59,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:59,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:59,034 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:59,034 INFO L175 Difference]: Start difference. First operand has 44 places, 25 transitions, 166 flow. Second operand 6 states and 454 transitions. [2023-08-31 23:38:59,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 38 transitions, 277 flow [2023-08-31 23:38:59,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 239 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-31 23:38:59,036 INFO L231 Difference]: Finished difference. Result has 41 places, 22 transitions, 119 flow [2023-08-31 23:38:59,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=41, PETRI_TRANSITIONS=22} [2023-08-31 23:38:59,037 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-08-31 23:38:59,037 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 22 transitions, 119 flow [2023-08-31 23:38:59,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.83333333333333) internal successors, (431), 6 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) [2023-08-31 23:38:59,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:59,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:59,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:38:59,038 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:59,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:59,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1496298443, now seen corresponding path program 3 times [2023-08-31 23:38:59,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:59,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020176058] [2023-08-31 23:38:59,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:59,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:59,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:59,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020176058] [2023-08-31 23:38:59,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020176058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:59,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:59,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:38:59,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681379198] [2023-08-31 23:38:59,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:59,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:38:59,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:59,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:38:59,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:38:59,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 186 [2023-08-31 23:38:59,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 22 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:59,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:59,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 186 [2023-08-31 23:38:59,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:59,600 INFO L130 PetriNetUnfolder]: 162/308 cut-off events. [2023-08-31 23:38:59,600 INFO L131 PetriNetUnfolder]: For 331/331 co-relation queries the response was YES. [2023-08-31 23:38:59,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 308 events. 162/308 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1139 event pairs, 44 based on Foata normal form. 18/314 useless extension candidates. Maximal degree in co-relation 851. Up to 121 conditions per place. [2023-08-31 23:38:59,602 INFO L137 encePairwiseOnDemand]: 179/186 looper letters, 16 selfloop transitions, 5 changer transitions 13/36 dead transitions. [2023-08-31 23:38:59,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 222 flow [2023-08-31 23:38:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:38:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:38:59,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 519 transitions. [2023-08-31 23:38:59,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3986175115207373 [2023-08-31 23:38:59,604 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 519 transitions. [2023-08-31 23:38:59,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 519 transitions. [2023-08-31 23:38:59,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:59,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 519 transitions. [2023-08-31 23:38:59,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:59,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:59,608 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:59,608 INFO L175 Difference]: Start difference. First operand has 41 places, 22 transitions, 119 flow. Second operand 7 states and 519 transitions. [2023-08-31 23:38:59,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 222 flow [2023-08-31 23:38:59,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 36 transitions, 204 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-31 23:38:59,610 INFO L231 Difference]: Finished difference. Result has 42 places, 20 transitions, 112 flow [2023-08-31 23:38:59,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=20} [2023-08-31 23:38:59,611 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-08-31 23:38:59,611 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 20 transitions, 112 flow [2023-08-31 23:38:59,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:59,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:59,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:59,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:38:59,612 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:59,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:59,613 INFO L85 PathProgramCache]: Analyzing trace with hash 884279040, now seen corresponding path program 1 times [2023-08-31 23:38:59,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:59,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26068701] [2023-08-31 23:38:59,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:59,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:59,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:59,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:59,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26068701] [2023-08-31 23:38:59,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26068701] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:59,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:59,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:38:59,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449892318] [2023-08-31 23:38:59,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:59,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:38:59,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:59,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:38:59,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:38:59,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 186 [2023-08-31 23:38:59,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 20 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:59,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:59,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 186 [2023-08-31 23:38:59,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:59,942 INFO L130 PetriNetUnfolder]: 58/121 cut-off events. [2023-08-31 23:38:59,943 INFO L131 PetriNetUnfolder]: For 219/219 co-relation queries the response was YES. [2023-08-31 23:38:59,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 121 events. 58/121 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 310 event pairs, 34 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 369. Up to 99 conditions per place. [2023-08-31 23:38:59,944 INFO L137 encePairwiseOnDemand]: 182/186 looper letters, 13 selfloop transitions, 4 changer transitions 0/19 dead transitions. [2023-08-31 23:38:59,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 19 transitions, 132 flow [2023-08-31 23:38:59,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:38:59,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:38:59,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2023-08-31 23:38:59,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.410752688172043 [2023-08-31 23:38:59,946 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 382 transitions. [2023-08-31 23:38:59,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 382 transitions. [2023-08-31 23:38:59,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:59,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 382 transitions. [2023-08-31 23:38:59,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:59,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:59,949 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:59,949 INFO L175 Difference]: Start difference. First operand has 42 places, 20 transitions, 112 flow. Second operand 5 states and 382 transitions. [2023-08-31 23:38:59,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 19 transitions, 132 flow [2023-08-31 23:38:59,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 19 transitions, 111 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-08-31 23:38:59,950 INFO L231 Difference]: Finished difference. Result has 35 places, 18 transitions, 83 flow [2023-08-31 23:38:59,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=83, PETRI_PLACES=35, PETRI_TRANSITIONS=18} [2023-08-31 23:38:59,951 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2023-08-31 23:38:59,951 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 18 transitions, 83 flow [2023-08-31 23:38:59,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:59,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:59,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:59,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:38:59,952 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:59,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:59,953 INFO L85 PathProgramCache]: Analyzing trace with hash 884279030, now seen corresponding path program 1 times [2023-08-31 23:38:59,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:59,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805922305] [2023-08-31 23:38:59,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:59,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:39:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:39:00,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:39:00,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805922305] [2023-08-31 23:39:00,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805922305] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:39:00,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:39:00,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:39:00,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514505112] [2023-08-31 23:39:00,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:39:00,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:39:00,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:39:00,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:39:00,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:39:00,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 186 [2023-08-31 23:39:00,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 18 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:39:00,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 186 [2023-08-31 23:39:00,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:39:00,133 INFO L130 PetriNetUnfolder]: 56/125 cut-off events. [2023-08-31 23:39:00,134 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2023-08-31 23:39:00,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 125 events. 56/125 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 388 event pairs, 21 based on Foata normal form. 10/134 useless extension candidates. Maximal degree in co-relation 339. Up to 73 conditions per place. [2023-08-31 23:39:00,135 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 19 selfloop transitions, 4 changer transitions 12/37 dead transitions. [2023-08-31 23:39:00,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 226 flow [2023-08-31 23:39:00,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:39:00,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:39:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-08-31 23:39:00,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838709677419355 [2023-08-31 23:39:00,137 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-08-31 23:39:00,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-08-31 23:39:00,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:39:00,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-08-31 23:39:00,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,142 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,142 INFO L175 Difference]: Start difference. First operand has 35 places, 18 transitions, 83 flow. Second operand 5 states and 450 transitions. [2023-08-31 23:39:00,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 37 transitions, 226 flow [2023-08-31 23:39:00,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 219 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:39:00,143 INFO L231 Difference]: Finished difference. Result has 39 places, 21 transitions, 113 flow [2023-08-31 23:39:00,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=113, PETRI_PLACES=39, PETRI_TRANSITIONS=21} [2023-08-31 23:39:00,145 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-08-31 23:39:00,145 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 21 transitions, 113 flow [2023-08-31 23:39:00,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:39:00,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:39:00,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:39:00,147 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:39:00,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:39:00,147 INFO L85 PathProgramCache]: Analyzing trace with hash 776029876, now seen corresponding path program 1 times [2023-08-31 23:39:00,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:39:00,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633152505] [2023-08-31 23:39:00,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:39:00,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:39:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:39:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:39:00,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:39:00,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633152505] [2023-08-31 23:39:00,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633152505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:39:00,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:39:00,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:39:00,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789264120] [2023-08-31 23:39:00,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:39:00,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:39:00,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:39:00,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:39:00,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:39:00,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 186 [2023-08-31 23:39:00,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 21 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:39:00,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 186 [2023-08-31 23:39:00,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:39:00,341 INFO L130 PetriNetUnfolder]: 32/79 cut-off events. [2023-08-31 23:39:00,341 INFO L131 PetriNetUnfolder]: For 155/163 co-relation queries the response was YES. [2023-08-31 23:39:00,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 79 events. 32/79 cut-off events. For 155/163 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 204 event pairs, 4 based on Foata normal form. 11/88 useless extension candidates. Maximal degree in co-relation 315. Up to 48 conditions per place. [2023-08-31 23:39:00,342 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 20 selfloop transitions, 7 changer transitions 10/39 dead transitions. [2023-08-31 23:39:00,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 295 flow [2023-08-31 23:39:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:39:00,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:39:00,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 535 transitions. [2023-08-31 23:39:00,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47939068100358423 [2023-08-31 23:39:00,344 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 535 transitions. [2023-08-31 23:39:00,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 535 transitions. [2023-08-31 23:39:00,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:39:00,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 535 transitions. [2023-08-31 23:39:00,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.16666666666667) internal successors, (535), 6 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,348 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,348 INFO L175 Difference]: Start difference. First operand has 39 places, 21 transitions, 113 flow. Second operand 6 states and 535 transitions. [2023-08-31 23:39:00,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 295 flow [2023-08-31 23:39:00,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 289 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 23:39:00,350 INFO L231 Difference]: Finished difference. Result has 43 places, 24 transitions, 163 flow [2023-08-31 23:39:00,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=43, PETRI_TRANSITIONS=24} [2023-08-31 23:39:00,351 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-31 23:39:00,351 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 24 transitions, 163 flow [2023-08-31 23:39:00,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:39:00,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:39:00,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:39:00,352 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:39:00,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:39:00,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1630987968, now seen corresponding path program 1 times [2023-08-31 23:39:00,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:39:00,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150176583] [2023-08-31 23:39:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:39:00,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:39:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:39:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:39:00,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:39:00,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150176583] [2023-08-31 23:39:00,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150176583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:39:00,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:39:00,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:39:00,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748369259] [2023-08-31 23:39:00,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:39:00,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:39:00,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:39:00,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:39:00,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:39:00,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 186 [2023-08-31 23:39:00,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 24 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:39:00,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 186 [2023-08-31 23:39:00,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:39:00,565 INFO L130 PetriNetUnfolder]: 17/50 cut-off events. [2023-08-31 23:39:00,566 INFO L131 PetriNetUnfolder]: For 174/192 co-relation queries the response was YES. [2023-08-31 23:39:00,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 50 events. 17/50 cut-off events. For 174/192 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 85 event pairs, 1 based on Foata normal form. 12/61 useless extension candidates. Maximal degree in co-relation 231. Up to 28 conditions per place. [2023-08-31 23:39:00,566 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 17 selfloop transitions, 10 changer transitions 5/34 dead transitions. [2023-08-31 23:39:00,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 34 transitions, 301 flow [2023-08-31 23:39:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:39:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:39:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2023-08-31 23:39:00,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47081413210445466 [2023-08-31 23:39:00,569 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2023-08-31 23:39:00,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2023-08-31 23:39:00,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:39:00,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2023-08-31 23:39:00,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,573 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,573 INFO L175 Difference]: Start difference. First operand has 43 places, 24 transitions, 163 flow. Second operand 7 states and 613 transitions. [2023-08-31 23:39:00,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 34 transitions, 301 flow [2023-08-31 23:39:00,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 263 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-08-31 23:39:00,575 INFO L231 Difference]: Finished difference. Result has 46 places, 24 transitions, 163 flow [2023-08-31 23:39:00,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=163, PETRI_PLACES=46, PETRI_TRANSITIONS=24} [2023-08-31 23:39:00,577 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2023-08-31 23:39:00,577 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 24 transitions, 163 flow [2023-08-31 23:39:00,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:39:00,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:39:00,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 23:39:00,578 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:39:00,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:39:00,578 INFO L85 PathProgramCache]: Analyzing trace with hash -286230642, now seen corresponding path program 1 times [2023-08-31 23:39:00,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:39:00,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762344795] [2023-08-31 23:39:00,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:39:00,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:39:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:39:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:39:00,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:39:00,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762344795] [2023-08-31 23:39:00,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762344795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:39:00,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:39:00,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:39:00,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420067279] [2023-08-31 23:39:00,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:39:00,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:39:00,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:39:00,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:39:00,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:39:00,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 186 [2023-08-31 23:39:00,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 24 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:39:00,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 186 [2023-08-31 23:39:00,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:39:00,718 INFO L130 PetriNetUnfolder]: 18/49 cut-off events. [2023-08-31 23:39:00,718 INFO L131 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2023-08-31 23:39:00,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 49 events. 18/49 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 4 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 207. Up to 24 conditions per place. [2023-08-31 23:39:00,719 INFO L137 encePairwiseOnDemand]: 183/186 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-08-31 23:39:00,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 28 transitions, 239 flow [2023-08-31 23:39:00,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:39:00,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:39:00,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2023-08-31 23:39:00,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4771505376344086 [2023-08-31 23:39:00,721 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2023-08-31 23:39:00,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2023-08-31 23:39:00,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:39:00,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2023-08-31 23:39:00,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,723 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,723 INFO L175 Difference]: Start difference. First operand has 46 places, 24 transitions, 163 flow. Second operand 4 states and 355 transitions. [2023-08-31 23:39:00,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 28 transitions, 239 flow [2023-08-31 23:39:00,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 28 transitions, 198 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-31 23:39:00,725 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-08-31 23:39:00,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-08-31 23:39:00,725 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-08-31 23:39:00,726 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-08-31 23:39:00,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:00,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-31 23:39:00,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-31 23:39:00,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-31 23:39:00,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-31 23:39:00,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-31 23:39:00,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-31 23:39:00,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-31 23:39:00,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-31 23:39:00,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-31 23:39:00,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-31 23:39:00,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-31 23:39:00,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 23:39:00,730 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:39:00,733 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:39:00,733 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:39:00,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:39:00 BasicIcfg [2023-08-31 23:39:00,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:39:00,736 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:39:00,736 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:39:00,736 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:39:00,737 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:38:52" (3/4) ... [2023-08-31 23:39:00,739 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 23:39:00,744 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-31 23:39:00,744 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-31 23:39:00,744 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-31 23:39:00,749 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-31 23:39:00,749 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 23:39:00,749 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 23:39:00,749 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 23:39:00,780 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 23:39:00,780 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:39:00,781 INFO L158 Benchmark]: Toolchain (without parser) took 9424.88ms. Allocated memory was 73.4MB in the beginning and 172.0MB in the end (delta: 98.6MB). Free memory was 50.8MB in the beginning and 71.8MB in the end (delta: -21.0MB). Peak memory consumption was 80.0MB. Max. memory is 16.1GB. [2023-08-31 23:39:00,781 INFO L158 Benchmark]: CDTParser took 0.87ms. Allocated memory is still 73.4MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:39:00,781 INFO L158 Benchmark]: CACSL2BoogieTranslator took 493.40ms. Allocated memory is still 73.4MB. Free memory was 50.6MB in the beginning and 30.5MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-08-31 23:39:00,782 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.64ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 30.5MB in the beginning and 74.0MB in the end (delta: -43.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-31 23:39:00,782 INFO L158 Benchmark]: Boogie Preprocessor took 68.02ms. Allocated memory is still 94.4MB. Free memory was 74.0MB in the beginning and 72.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:39:00,782 INFO L158 Benchmark]: RCFGBuilder took 392.70ms. Allocated memory is still 94.4MB. Free memory was 72.6MB in the beginning and 57.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-31 23:39:00,782 INFO L158 Benchmark]: TraceAbstraction took 8350.91ms. Allocated memory was 94.4MB in the beginning and 172.0MB in the end (delta: 77.6MB). Free memory was 57.3MB in the beginning and 75.0MB in the end (delta: -17.6MB). Peak memory consumption was 63.2MB. Max. memory is 16.1GB. [2023-08-31 23:39:00,783 INFO L158 Benchmark]: Witness Printer took 44.60ms. Allocated memory is still 172.0MB. Free memory was 75.0MB in the beginning and 71.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:39:00,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87ms. Allocated memory is still 73.4MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 493.40ms. Allocated memory is still 73.4MB. Free memory was 50.6MB in the beginning and 30.5MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.64ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 30.5MB in the beginning and 74.0MB in the end (delta: -43.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.02ms. Allocated memory is still 94.4MB. Free memory was 74.0MB in the beginning and 72.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 392.70ms. Allocated memory is still 94.4MB. Free memory was 72.6MB in the beginning and 57.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8350.91ms. Allocated memory was 94.4MB in the beginning and 172.0MB in the end (delta: 77.6MB). Free memory was 57.3MB in the beginning and 75.0MB in the end (delta: -17.6MB). Peak memory consumption was 63.2MB. Max. memory is 16.1GB. * Witness Printer took 44.60ms. Allocated memory is still 172.0MB. Free memory was 75.0MB in the beginning and 71.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 95 PlacesBefore, 33 PlacesAfterwards, 87 TransitionsBefore, 24 TransitionsAfterwards, 1416 CoEnabledTransitionPairs, 7 FixpointIterations, 27 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 92 TotalNumberOfCompositions, 3009 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1743, independent: 1637, independent conditional: 0, independent unconditional: 1637, dependent: 106, dependent conditional: 0, dependent unconditional: 106, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 796, independent: 765, independent conditional: 0, independent unconditional: 765, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1743, independent: 872, independent conditional: 0, independent unconditional: 872, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 796, unknown conditional: 0, unknown unconditional: 796] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 773]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 116 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.2s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 890 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 540 mSDsluCounter, 277 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 168 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2508 IncrementalHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 109 mSDtfsCounter, 2508 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=6, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 1827 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 23:39:00,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE