./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c --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/weaver/parallel-bakery-2.wvr.c -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 792abe541332f7dc398bc25a6deb152789a85df6c33026f5ef70dc244a881f99 --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 [2023-09-01 02:05:48,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 02:05:48,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 02:05:48,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 02:05:48,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 02:05:48,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 02:05:48,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 02:05:48,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 02:05:48,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 02:05:48,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 02:05:48,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 02:05:48,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 02:05:48,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 02:05:48,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 02:05:48,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 02:05:48,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 02:05:48,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 02:05:48,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 02:05:48,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 02:05:48,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 02:05:48,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 02:05:48,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 02:05:48,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 02:05:48,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 02:05:48,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 02:05:48,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 02:05:48,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 02:05:48,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 02:05:48,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 02:05:48,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 02:05:48,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 02:05:48,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 02:05:48,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 02:05:48,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 02:05:48,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 02:05:48,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 02:05:48,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 02:05:48,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 02:05:48,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 02:05:48,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 02:05:48,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 02:05:48,335 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 02:05:48,357 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 02:05:48,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 02:05:48,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 02:05:48,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 02:05:48,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 02:05:48,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 02:05:48,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 02:05:48,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 02:05:48,360 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 02:05:48,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 02:05:48,361 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 02:05:48,361 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 02:05:48,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 02:05:48,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 02:05:48,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 02:05:48,362 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 02:05:48,362 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 02:05:48,362 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 02:05:48,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 02:05:48,362 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 02:05:48,362 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 02:05:48,363 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 02:05:48,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 02:05:48,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 02:05:48,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 02:05:48,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:05:48,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 02:05:48,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 02:05:48,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 02:05:48,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 02:05:48,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 02:05:48,364 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 02:05:48,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 02:05:48,364 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 02:05:48,365 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 792abe541332f7dc398bc25a6deb152789a85df6c33026f5ef70dc244a881f99 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 02:05:48,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 02:05:48,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 02:05:48,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 02:05:48,580 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 02:05:48,581 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 02:05:48,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2023-09-01 02:05:49,478 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 02:05:49,643 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 02:05:49,644 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2023-09-01 02:05:49,648 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8183de080/6d615af8c5754f19a4c0c01c70b31a2a/FLAG34420fb25 [2023-09-01 02:05:49,658 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8183de080/6d615af8c5754f19a4c0c01c70b31a2a [2023-09-01 02:05:49,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 02:05:49,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 02:05:49,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 02:05:49,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 02:05:49,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 02:05:49,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:05:49" (1/1) ... [2023-09-01 02:05:49,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34adbf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:05:49, skipping insertion in model container [2023-09-01 02:05:49,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:05:49" (1/1) ... [2023-09-01 02:05:49,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 02:05:49,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:05:49,798 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c[3512,3525] [2023-09-01 02:05:49,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:05:49,812 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 02:05:49,846 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c[3512,3525] [2023-09-01 02:05:49,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:05:49,855 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:05:49,856 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:05:49,860 INFO L208 MainTranslator]: Completed translation [2023-09-01 02:05:49,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:05:49 WrapperNode [2023-09-01 02:05:49,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 02:05:49,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 02:05:49,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 02:05:49,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 02:05:49,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:05:49" (1/1) ... [2023-09-01 02:05:49,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:05:49" (1/1) ... [2023-09-01 02:05:49,905 INFO L138 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 155 [2023-09-01 02:05:49,905 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 02:05:49,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 02:05:49,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 02:05:49,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 02:05:49,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:05:49" (1/1) ... [2023-09-01 02:05:49,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:05:49" (1/1) ... [2023-09-01 02:05:49,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:05:49" (1/1) ... [2023-09-01 02:05:49,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:05:49" (1/1) ... [2023-09-01 02:05:49,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:05:49" (1/1) ... [2023-09-01 02:05:49,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:05:49" (1/1) ... [2023-09-01 02:05:49,939 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:05:49" (1/1) ... [2023-09-01 02:05:49,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:05:49" (1/1) ... [2023-09-01 02:05:49,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 02:05:49,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 02:05:49,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 02:05:49,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 02:05:49,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:05:49" (1/1) ... [2023-09-01 02:05:49,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:05:49,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:05:49,972 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) [2023-09-01 02:05:49,977 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 [2023-09-01 02:05:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 02:05:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 02:05:50,007 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 02:05:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 02:05:50,007 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 02:05:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 02:05:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 02:05:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 02:05:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 02:05:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 02:05:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 02:05:50,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 02:05:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 02:05:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 02:05:50,009 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 02:05:50,091 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 02:05:50,093 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 02:05:50,344 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 02:05:50,378 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 02:05:50,378 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 02:05:50,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:05:50 BoogieIcfgContainer [2023-09-01 02:05:50,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 02:05:50,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 02:05:50,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 02:05:50,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 02:05:50,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:05:49" (1/3) ... [2023-09-01 02:05:50,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e84d313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:05:50, skipping insertion in model container [2023-09-01 02:05:50,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:05:49" (2/3) ... [2023-09-01 02:05:50,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e84d313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:05:50, skipping insertion in model container [2023-09-01 02:05:50,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:05:50" (3/3) ... [2023-09-01 02:05:50,386 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2023-09-01 02:05:50,397 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 02:05:50,398 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-09-01 02:05:50,398 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 02:05:50,442 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 02:05:50,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 120 transitions, 256 flow [2023-09-01 02:05:50,494 INFO L130 PetriNetUnfolder]: 2/118 cut-off events. [2023-09-01 02:05:50,494 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 02:05:50,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 118 events. 2/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2023-09-01 02:05:50,497 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 120 transitions, 256 flow [2023-09-01 02:05:50,500 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 114 transitions, 240 flow [2023-09-01 02:05:50,502 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 02:05:50,510 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 114 transitions, 240 flow [2023-09-01 02:05:50,511 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 114 transitions, 240 flow [2023-09-01 02:05:50,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 114 transitions, 240 flow [2023-09-01 02:05:50,541 INFO L130 PetriNetUnfolder]: 2/114 cut-off events. [2023-09-01 02:05:50,541 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 02:05:50,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 114 events. 2/114 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2023-09-01 02:05:50,544 INFO L119 LiptonReduction]: Number of co-enabled transitions 748 [2023-09-01 02:05:53,476 INFO L134 LiptonReduction]: Checked pairs total: 5259 [2023-09-01 02:05:53,477 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-09-01 02:05:53,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 02:05:53,490 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;@6058916c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 02:05:53,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-09-01 02:05:53,491 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 02:05:53,491 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:05:53,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:05:53,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 02:05:53,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:05:53,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:05:53,495 INFO L85 PathProgramCache]: Analyzing trace with hash 475, now seen corresponding path program 1 times [2023-09-01 02:05:53,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:05:53,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618894206] [2023-09-01 02:05:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:05:53,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:05:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:05:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:05:53,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:05:53,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618894206] [2023-09-01 02:05:53,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618894206] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:05:53,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:05:53,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 02:05:53,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73977128] [2023-09-01 02:05:53,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:05:53,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 02:05:53,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:05:53,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 02:05:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 02:05:53,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 221 [2023-09-01 02:05:53,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 107.5) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:53,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:05:53,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 221 [2023-09-01 02:05:53,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:05:53,719 INFO L130 PetriNetUnfolder]: 168/395 cut-off events. [2023-09-01 02:05:53,719 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-09-01 02:05:53,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 395 events. 168/395 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2093 event pairs, 168 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 636. Up to 312 conditions per place. [2023-09-01 02:05:53,723 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 23 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2023-09-01 02:05:53,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 124 flow [2023-09-01 02:05:53,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 02:05:53,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 02:05:53,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 240 transitions. [2023-09-01 02:05:53,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5429864253393665 [2023-09-01 02:05:53,732 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 240 transitions. [2023-09-01 02:05:53,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 240 transitions. [2023-09-01 02:05:53,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:05:53,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 240 transitions. [2023-09-01 02:05:53,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 120.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:53,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:53,740 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:53,742 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 84 flow. Second operand 2 states and 240 transitions. [2023-09-01 02:05:53,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 124 flow [2023-09-01 02:05:53,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 116 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 02:05:53,745 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 70 flow [2023-09-01 02:05:53,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-09-01 02:05:53,748 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -6 predicate places. [2023-09-01 02:05:53,748 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 70 flow [2023-09-01 02:05:53,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 107.5) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:53,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:05:53,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:05:53,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 02:05:53,749 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:05:53,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:05:53,750 INFO L85 PathProgramCache]: Analyzing trace with hash 468490, now seen corresponding path program 1 times [2023-09-01 02:05:53,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:05:53,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408208894] [2023-09-01 02:05:53,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:05:53,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:05:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:05:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:05:53,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:05:53,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408208894] [2023-09-01 02:05:53,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408208894] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:05:53,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:05:53,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:05:53,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124888784] [2023-09-01 02:05:53,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:05:53,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:05:53,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:05:53,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:05:53,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:05:53,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 221 [2023-09-01 02:05:53,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:53,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:05:53,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 221 [2023-09-01 02:05:53,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:05:53,982 INFO L130 PetriNetUnfolder]: 160/375 cut-off events. [2023-09-01 02:05:53,982 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 02:05:53,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 375 events. 160/375 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1941 event pairs, 160 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 674. Up to 293 conditions per place. [2023-09-01 02:05:53,985 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 20 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-09-01 02:05:53,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 108 flow [2023-09-01 02:05:53,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:05:53,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:05:53,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-09-01 02:05:53,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781297134238311 [2023-09-01 02:05:53,987 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-09-01 02:05:53,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-09-01 02:05:53,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:05:53,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-09-01 02:05:53,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:53,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:53,991 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:53,991 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 70 flow. Second operand 3 states and 317 transitions. [2023-09-01 02:05:53,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 108 flow [2023-09-01 02:05:53,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 02:05:53,992 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 68 flow [2023-09-01 02:05:53,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-09-01 02:05:53,993 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -6 predicate places. [2023-09-01 02:05:53,993 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 68 flow [2023-09-01 02:05:53,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:53,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:05:53,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:05:53,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 02:05:53,994 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:05:53,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:05:54,004 INFO L85 PathProgramCache]: Analyzing trace with hash 468489, now seen corresponding path program 1 times [2023-09-01 02:05:54,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:05:54,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807286468] [2023-09-01 02:05:54,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:05:54,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:05:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:05:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:05:54,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:05:54,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807286468] [2023-09-01 02:05:54,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807286468] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:05:54,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:05:54,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:05:54,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266503871] [2023-09-01 02:05:54,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:05:54,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:05:54,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:05:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:05:54,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:05:54,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 221 [2023-09-01 02:05:54,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:05:54,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 221 [2023-09-01 02:05:54,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:05:54,170 INFO L130 PetriNetUnfolder]: 152/355 cut-off events. [2023-09-01 02:05:54,170 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 02:05:54,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 355 events. 152/355 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1815 event pairs, 152 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 637. Up to 275 conditions per place. [2023-09-01 02:05:54,172 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 18 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-09-01 02:05:54,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 102 flow [2023-09-01 02:05:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:05:54,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:05:54,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2023-09-01 02:05:54,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49321266968325794 [2023-09-01 02:05:54,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2023-09-01 02:05:54,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2023-09-01 02:05:54,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:05:54,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2023-09-01 02:05:54,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,176 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,176 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 68 flow. Second operand 3 states and 327 transitions. [2023-09-01 02:05:54,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 102 flow [2023-09-01 02:05:54,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 101 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:05:54,177 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 65 flow [2023-09-01 02:05:54,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-09-01 02:05:54,177 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2023-09-01 02:05:54,177 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 65 flow [2023-09-01 02:05:54,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:05:54,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:05:54,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 02:05:54,178 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:05:54,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:05:54,178 INFO L85 PathProgramCache]: Analyzing trace with hash 450230822, now seen corresponding path program 1 times [2023-09-01 02:05:54,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:05:54,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976084594] [2023-09-01 02:05:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:05:54,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:05:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:05:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:05:54,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:05:54,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976084594] [2023-09-01 02:05:54,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976084594] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:05:54,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:05:54,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:05:54,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107920020] [2023-09-01 02:05:54,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:05:54,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:05:54,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:05:54,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:05:54,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:05:54,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 221 [2023-09-01 02:05:54,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:05:54,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 221 [2023-09-01 02:05:54,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:05:54,273 INFO L130 PetriNetUnfolder]: 112/274 cut-off events. [2023-09-01 02:05:54,273 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 02:05:54,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 274 events. 112/274 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1298 event pairs, 112 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 492. Up to 210 conditions per place. [2023-09-01 02:05:54,274 INFO L137 encePairwiseOnDemand]: 219/221 looper letters, 17 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-09-01 02:05:54,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 99 flow [2023-09-01 02:05:54,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:05:54,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:05:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2023-09-01 02:05:54,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766214177978884 [2023-09-01 02:05:54,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2023-09-01 02:05:54,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2023-09-01 02:05:54,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:05:54,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2023-09-01 02:05:54,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,288 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 65 flow. Second operand 3 states and 316 transitions. [2023-09-01 02:05:54,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 99 flow [2023-09-01 02:05:54,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:05:54,289 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 64 flow [2023-09-01 02:05:54,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-09-01 02:05:54,290 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2023-09-01 02:05:54,290 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 64 flow [2023-09-01 02:05:54,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:05:54,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:05:54,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 02:05:54,291 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:05:54,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:05:54,291 INFO L85 PathProgramCache]: Analyzing trace with hash 450230824, now seen corresponding path program 1 times [2023-09-01 02:05:54,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:05:54,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795039313] [2023-09-01 02:05:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:05:54,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:05:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:05:54,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:05:54,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:05:54,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795039313] [2023-09-01 02:05:54,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795039313] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:05:54,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:05:54,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 02:05:54,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135189312] [2023-09-01 02:05:54,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:05:54,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:05:54,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:05:54,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:05:54,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:05:54,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 221 [2023-09-01 02:05:54,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:05:54,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 221 [2023-09-01 02:05:54,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:05:54,410 INFO L130 PetriNetUnfolder]: 72/193 cut-off events. [2023-09-01 02:05:54,410 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 02:05:54,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 193 events. 72/193 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 824 event pairs, 72 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 347. Up to 145 conditions per place. [2023-09-01 02:05:54,411 INFO L137 encePairwiseOnDemand]: 219/221 looper letters, 16 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-09-01 02:05:54,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 96 flow [2023-09-01 02:05:54,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:05:54,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:05:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-09-01 02:05:54,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45248868778280543 [2023-09-01 02:05:54,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-09-01 02:05:54,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-09-01 02:05:54,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:05:54,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-09-01 02:05:54,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,416 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 64 flow. Second operand 3 states and 300 transitions. [2023-09-01 02:05:54,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 96 flow [2023-09-01 02:05:54,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:05:54,417 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 63 flow [2023-09-01 02:05:54,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-09-01 02:05:54,419 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2023-09-01 02:05:54,419 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 63 flow [2023-09-01 02:05:54,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:05:54,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:05:54,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 02:05:54,420 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:05:54,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:05:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1457814106, now seen corresponding path program 1 times [2023-09-01 02:05:54,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:05:54,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023969893] [2023-09-01 02:05:54,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:05:54,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:05:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:05:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:05:54,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:05:54,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023969893] [2023-09-01 02:05:54,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023969893] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:05:54,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:05:54,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:05:54,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85663002] [2023-09-01 02:05:54,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:05:54,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:05:54,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:05:54,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:05:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:05:54,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 221 [2023-09-01 02:05:54,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 63 flow. Second operand has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:05:54,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 221 [2023-09-01 02:05:54,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:05:54,827 INFO L130 PetriNetUnfolder]: 172/364 cut-off events. [2023-09-01 02:05:54,827 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 02:05:54,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 364 events. 172/364 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1539 event pairs, 57 based on Foata normal form. 1/354 useless extension candidates. Maximal degree in co-relation 728. Up to 98 conditions per place. [2023-09-01 02:05:54,829 INFO L137 encePairwiseOnDemand]: 215/221 looper letters, 44 selfloop transitions, 7 changer transitions 17/74 dead transitions. [2023-09-01 02:05:54,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 74 transitions, 302 flow [2023-09-01 02:05:54,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 02:05:54,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 02:05:54,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 845 transitions. [2023-09-01 02:05:54,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47794117647058826 [2023-09-01 02:05:54,831 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 845 transitions. [2023-09-01 02:05:54,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 845 transitions. [2023-09-01 02:05:54,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:05:54,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 845 transitions. [2023-09-01 02:05:54,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 105.625) internal successors, (845), 8 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 221.0) internal successors, (1989), 9 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,836 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 221.0) internal successors, (1989), 9 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,836 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 63 flow. Second operand 8 states and 845 transitions. [2023-09-01 02:05:54,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 74 transitions, 302 flow [2023-09-01 02:05:54,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 74 transitions, 301 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:05:54,837 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 100 flow [2023-09-01 02:05:54,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2023-09-01 02:05:54,838 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-09-01 02:05:54,838 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 100 flow [2023-09-01 02:05:54,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:54,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:05:54,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:05:54,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 02:05:54,839 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:05:54,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:05:54,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1304819132, now seen corresponding path program 2 times [2023-09-01 02:05:54,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:05:54,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220664163] [2023-09-01 02:05:54,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:05:54,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:05:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:05:55,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:05:55,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:05:55,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220664163] [2023-09-01 02:05:55,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220664163] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:05:55,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:05:55,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 02:05:55,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956412222] [2023-09-01 02:05:55,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:05:55,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:05:55,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:05:55,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:05:55,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:05:55,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 221 [2023-09-01 02:05:55,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 100 flow. Second operand has 7 states, 7 states have (on average 101.71428571428571) internal successors, (712), 7 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:55,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:05:55,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 221 [2023-09-01 02:05:55,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:05:55,209 INFO L130 PetriNetUnfolder]: 141/355 cut-off events. [2023-09-01 02:05:55,209 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 02:05:55,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 355 events. 141/355 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1621 event pairs, 27 based on Foata normal form. 6/352 useless extension candidates. Maximal degree in co-relation 718. Up to 198 conditions per place. [2023-09-01 02:05:55,210 INFO L137 encePairwiseOnDemand]: 215/221 looper letters, 22 selfloop transitions, 4 changer transitions 18/57 dead transitions. [2023-09-01 02:05:55,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 240 flow [2023-09-01 02:05:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 02:05:55,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 02:05:55,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 639 transitions. [2023-09-01 02:05:55,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4819004524886878 [2023-09-01 02:05:55,212 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 639 transitions. [2023-09-01 02:05:55,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 639 transitions. [2023-09-01 02:05:55,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:05:55,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 639 transitions. [2023-09-01 02:05:55,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:55,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 221.0) internal successors, (1547), 7 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:55,216 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 221.0) internal successors, (1547), 7 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:55,216 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 100 flow. Second operand 6 states and 639 transitions. [2023-09-01 02:05:55,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 240 flow [2023-09-01 02:05:55,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 238 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 02:05:55,218 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 127 flow [2023-09-01 02:05:55,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2023-09-01 02:05:55,218 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2023-09-01 02:05:55,219 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 127 flow [2023-09-01 02:05:55,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.71428571428571) internal successors, (712), 7 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:55,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:05:55,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:05:55,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 02:05:55,219 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:05:55,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:05:55,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1620621738, now seen corresponding path program 3 times [2023-09-01 02:05:55,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:05:55,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058351940] [2023-09-01 02:05:55,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:05:55,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:05:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:05:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:05:55,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:05:55,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058351940] [2023-09-01 02:05:55,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058351940] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:05:55,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:05:55,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 02:05:55,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043854493] [2023-09-01 02:05:55,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:05:55,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:05:55,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:05:55,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:05:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:05:55,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-09-01 02:05:55,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:55,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:05:55,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-09-01 02:05:55,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:05:55,374 INFO L130 PetriNetUnfolder]: 89/245 cut-off events. [2023-09-01 02:05:55,374 INFO L131 PetriNetUnfolder]: For 152/158 co-relation queries the response was YES. [2023-09-01 02:05:55,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 245 events. 89/245 cut-off events. For 152/158 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1034 event pairs, 68 based on Foata normal form. 6/238 useless extension candidates. Maximal degree in co-relation 612. Up to 172 conditions per place. [2023-09-01 02:05:55,376 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 21 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2023-09-01 02:05:55,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 38 transitions, 191 flow [2023-09-01 02:05:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:05:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:05:55,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2023-09-01 02:05:55,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5007541478129713 [2023-09-01 02:05:55,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2023-09-01 02:05:55,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2023-09-01 02:05:55,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:05:55,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2023-09-01 02:05:55,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:55,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:55,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:55,378 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 127 flow. Second operand 3 states and 332 transitions. [2023-09-01 02:05:55,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 38 transitions, 191 flow [2023-09-01 02:05:55,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 38 transitions, 186 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 02:05:55,381 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 130 flow [2023-09-01 02:05:55,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2023-09-01 02:05:55,382 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2023-09-01 02:05:55,382 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 130 flow [2023-09-01 02:05:55,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:55,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:05:55,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:05:55,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 02:05:55,383 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:05:55,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:05:55,383 INFO L85 PathProgramCache]: Analyzing trace with hash -696693128, now seen corresponding path program 4 times [2023-09-01 02:05:55,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:05:55,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013088210] [2023-09-01 02:05:55,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:05:55,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:05:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:05:55,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:05:55,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:05:55,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013088210] [2023-09-01 02:05:55,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013088210] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:05:55,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:05:55,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 02:05:55,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365862751] [2023-09-01 02:05:55,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:05:55,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:05:55,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:05:55,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:05:55,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:05:55,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 221 [2023-09-01 02:05:55,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:55,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:05:55,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 221 [2023-09-01 02:05:55,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:05:55,728 INFO L130 PetriNetUnfolder]: 90/276 cut-off events. [2023-09-01 02:05:55,728 INFO L131 PetriNetUnfolder]: For 127/127 co-relation queries the response was YES. [2023-09-01 02:05:55,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 276 events. 90/276 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1214 event pairs, 39 based on Foata normal form. 6/271 useless extension candidates. Maximal degree in co-relation 675. Up to 148 conditions per place. [2023-09-01 02:05:55,729 INFO L137 encePairwiseOnDemand]: 216/221 looper letters, 17 selfloop transitions, 2 changer transitions 12/45 dead transitions. [2023-09-01 02:05:55,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 223 flow [2023-09-01 02:05:55,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 02:05:55,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 02:05:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 532 transitions. [2023-09-01 02:05:55,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481447963800905 [2023-09-01 02:05:55,734 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 532 transitions. [2023-09-01 02:05:55,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 532 transitions. [2023-09-01 02:05:55,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:05:55,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 532 transitions. [2023-09-01 02:05:55,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:55,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:55,737 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:55,737 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 130 flow. Second operand 5 states and 532 transitions. [2023-09-01 02:05:55,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 223 flow [2023-09-01 02:05:55,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 45 transitions, 219 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 02:05:55,740 INFO L231 Difference]: Finished difference. Result has 53 places, 32 transitions, 124 flow [2023-09-01 02:05:55,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=53, PETRI_TRANSITIONS=32} [2023-09-01 02:05:55,742 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2023-09-01 02:05:55,742 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 32 transitions, 124 flow [2023-09-01 02:05:55,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:55,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:05:55,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:05:55,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 02:05:55,743 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:05:55,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:05:55,743 INFO L85 PathProgramCache]: Analyzing trace with hash -132024878, now seen corresponding path program 5 times [2023-09-01 02:05:55,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:05:55,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980270252] [2023-09-01 02:05:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:05:55,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:05:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:05:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:05:55,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:05:55,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980270252] [2023-09-01 02:05:55,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980270252] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:05:55,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:05:55,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:05:55,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864483501] [2023-09-01 02:05:55,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:05:55,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:05:55,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:05:55,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:05:55,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:05:55,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 221 [2023-09-01 02:05:55,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 32 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 102.16666666666667) internal successors, (613), 6 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) [2023-09-01 02:05:55,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:05:55,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 221 [2023-09-01 02:05:55,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:05:56,022 INFO L130 PetriNetUnfolder]: 104/274 cut-off events. [2023-09-01 02:05:56,023 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2023-09-01 02:05:56,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699 conditions, 274 events. 104/274 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1131 event pairs, 27 based on Foata normal form. 8/273 useless extension candidates. Maximal degree in co-relation 687. Up to 141 conditions per place. [2023-09-01 02:05:56,024 INFO L137 encePairwiseOnDemand]: 214/221 looper letters, 27 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2023-09-01 02:05:56,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 246 flow [2023-09-01 02:05:56,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 02:05:56,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 02:05:56,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 632 transitions. [2023-09-01 02:05:56,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766214177978884 [2023-09-01 02:05:56,026 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 632 transitions. [2023-09-01 02:05:56,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 632 transitions. [2023-09-01 02:05:56,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:05:56,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 632 transitions. [2023-09-01 02:05:56,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 105.33333333333333) internal successors, (632), 6 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 221.0) internal successors, (1547), 7 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,030 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 221.0) internal successors, (1547), 7 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,030 INFO L175 Difference]: Start difference. First operand has 53 places, 32 transitions, 124 flow. Second operand 6 states and 632 transitions. [2023-09-01 02:05:56,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 246 flow [2023-09-01 02:05:56,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 228 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-09-01 02:05:56,032 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 167 flow [2023-09-01 02:05:56,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=167, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2023-09-01 02:05:56,033 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2023-09-01 02:05:56,033 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 167 flow [2023-09-01 02:05:56,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.16666666666667) internal successors, (613), 6 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) [2023-09-01 02:05:56,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:05:56,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:05:56,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 02:05:56,035 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:05:56,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:05:56,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1329011724, now seen corresponding path program 6 times [2023-09-01 02:05:56,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:05:56,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184748226] [2023-09-01 02:05:56,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:05:56,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:05:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:05:56,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:05:56,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:05:56,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184748226] [2023-09-01 02:05:56,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184748226] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:05:56,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:05:56,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 02:05:56,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698362850] [2023-09-01 02:05:56,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:05:56,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:05:56,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:05:56,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:05:56,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:05:56,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 221 [2023-09-01 02:05:56,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:05:56,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 221 [2023-09-01 02:05:56,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:05:56,134 INFO L130 PetriNetUnfolder]: 105/283 cut-off events. [2023-09-01 02:05:56,134 INFO L131 PetriNetUnfolder]: For 158/163 co-relation queries the response was YES. [2023-09-01 02:05:56,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 283 events. 105/283 cut-off events. For 158/163 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1212 event pairs, 65 based on Foata normal form. 10/279 useless extension candidates. Maximal degree in co-relation 763. Up to 175 conditions per place. [2023-09-01 02:05:56,136 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 30 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-09-01 02:05:56,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 260 flow [2023-09-01 02:05:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:05:56,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:05:56,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-09-01 02:05:56,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052790346907994 [2023-09-01 02:05:56,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-09-01 02:05:56,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-09-01 02:05:56,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:05:56,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-09-01 02:05:56,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,140 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 167 flow. Second operand 3 states and 335 transitions. [2023-09-01 02:05:56,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 260 flow [2023-09-01 02:05:56,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 254 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-09-01 02:05:56,142 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 169 flow [2023-09-01 02:05:56,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2023-09-01 02:05:56,143 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2023-09-01 02:05:56,143 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 169 flow [2023-09-01 02:05:56,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:05:56,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:05:56,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 02:05:56,143 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:05:56,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:05:56,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1424085144, now seen corresponding path program 7 times [2023-09-01 02:05:56,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:05:56,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895647073] [2023-09-01 02:05:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:05:56,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:05:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:05:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:05:56,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:05:56,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895647073] [2023-09-01 02:05:56,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895647073] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:05:56,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:05:56,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:05:56,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114469928] [2023-09-01 02:05:56,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:05:56,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:05:56,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:05:56,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:05:56,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:05:56,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 221 [2023-09-01 02:05:56,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 169 flow. Second operand has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:05:56,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 221 [2023-09-01 02:05:56,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:05:56,425 INFO L130 PetriNetUnfolder]: 153/334 cut-off events. [2023-09-01 02:05:56,425 INFO L131 PetriNetUnfolder]: For 184/186 co-relation queries the response was YES. [2023-09-01 02:05:56,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 994 conditions, 334 events. 153/334 cut-off events. For 184/186 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1314 event pairs, 44 based on Foata normal form. 3/327 useless extension candidates. Maximal degree in co-relation 979. Up to 94 conditions per place. [2023-09-01 02:05:56,427 INFO L137 encePairwiseOnDemand]: 215/221 looper letters, 29 selfloop transitions, 6 changer transitions 29/70 dead transitions. [2023-09-01 02:05:56,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 402 flow [2023-09-01 02:05:56,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 02:05:56,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 02:05:56,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 833 transitions. [2023-09-01 02:05:56,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2023-09-01 02:05:56,430 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 833 transitions. [2023-09-01 02:05:56,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 833 transitions. [2023-09-01 02:05:56,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:05:56,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 833 transitions. [2023-09-01 02:05:56,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 104.125) internal successors, (833), 8 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 221.0) internal successors, (1989), 9 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,434 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 221.0) internal successors, (1989), 9 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,434 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 169 flow. Second operand 8 states and 833 transitions. [2023-09-01 02:05:56,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 402 flow [2023-09-01 02:05:56,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 02:05:56,437 INFO L231 Difference]: Finished difference. Result has 62 places, 29 transitions, 129 flow [2023-09-01 02:05:56,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=129, PETRI_PLACES=62, PETRI_TRANSITIONS=29} [2023-09-01 02:05:56,437 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-09-01 02:05:56,438 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 29 transitions, 129 flow [2023-09-01 02:05:56,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:05:56,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:05:56,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 02:05:56,438 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:05:56,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:05:56,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1560031876, now seen corresponding path program 8 times [2023-09-01 02:05:56,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:05:56,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111071368] [2023-09-01 02:05:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:05:56,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:05:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:05:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:05:56,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:05:56,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111071368] [2023-09-01 02:05:56,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111071368] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:05:56,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:05:56,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:05:56,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620733111] [2023-09-01 02:05:56,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:05:56,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:05:56,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:05:56,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:05:56,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:05:56,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 221 [2023-09-01 02:05:56,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 29 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 103.16666666666667) internal successors, (619), 6 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:05:56,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 221 [2023-09-01 02:05:56,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:05:56,754 INFO L130 PetriNetUnfolder]: 17/65 cut-off events. [2023-09-01 02:05:56,754 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-09-01 02:05:56,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 65 events. 17/65 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 163 event pairs, 7 based on Foata normal form. 6/68 useless extension candidates. Maximal degree in co-relation 175. Up to 22 conditions per place. [2023-09-01 02:05:56,754 INFO L137 encePairwiseOnDemand]: 217/221 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-09-01 02:05:56,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 22 transitions, 120 flow [2023-09-01 02:05:56,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 02:05:56,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 02:05:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 516 transitions. [2023-09-01 02:05:56,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4669683257918552 [2023-09-01 02:05:56,756 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 516 transitions. [2023-09-01 02:05:56,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 516 transitions. [2023-09-01 02:05:56,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:05:56,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 516 transitions. [2023-09-01 02:05:56,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.2) internal successors, (516), 5 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,759 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,759 INFO L175 Difference]: Start difference. First operand has 62 places, 29 transitions, 129 flow. Second operand 5 states and 516 transitions. [2023-09-01 02:05:56,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 22 transitions, 120 flow [2023-09-01 02:05:56,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 22 transitions, 98 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-09-01 02:05:56,760 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-09-01 02:05:56,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-09-01 02:05:56,760 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2023-09-01 02:05:56,761 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-09-01 02:05:56,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.16666666666667) internal successors, (619), 6 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:05:56,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-09-01 02:05:56,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-09-01 02:05:56,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-09-01 02:05:56,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-09-01 02:05:56,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-09-01 02:05:56,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-09-01 02:05:56,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-09-01 02:05:56,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-09-01 02:05:56,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-09-01 02:05:56,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-09-01 02:05:56,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-09-01 02:05:56,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-09-01 02:05:56,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 02:05:56,776 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1, 1, 1] [2023-09-01 02:05:56,778 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 02:05:56,778 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 02:05:56,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 02:05:56 BasicIcfg [2023-09-01 02:05:56,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 02:05:56,780 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 02:05:56,780 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 02:05:56,781 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 02:05:56,781 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:05:50" (3/4) ... [2023-09-01 02:05:56,782 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 02:05:56,786 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 02:05:56,786 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 02:05:56,788 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-09-01 02:05:56,789 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 02:05:56,789 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 02:05:56,789 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 02:05:56,810 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 02:05:56,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 02:05:56,810 INFO L158 Benchmark]: Toolchain (without parser) took 7149.22ms. Allocated memory was 83.9MB in the beginning and 146.8MB in the end (delta: 62.9MB). Free memory was 61.2MB in the beginning and 101.3MB in the end (delta: -40.1MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2023-09-01 02:05:56,810 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 60.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 02:05:56,810 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.29ms. Allocated memory is still 83.9MB. Free memory was 61.0MB in the beginning and 49.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 02:05:56,810 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.15ms. Allocated memory is still 83.9MB. Free memory was 49.6MB in the beginning and 47.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 02:05:56,811 INFO L158 Benchmark]: Boogie Preprocessor took 41.57ms. Allocated memory is still 83.9MB. Free memory was 47.7MB in the beginning and 46.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 02:05:56,811 INFO L158 Benchmark]: RCFGBuilder took 431.59ms. Allocated memory is still 83.9MB. Free memory was 46.4MB in the beginning and 47.4MB in the end (delta: -994.3kB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2023-09-01 02:05:56,811 INFO L158 Benchmark]: TraceAbstraction took 6398.72ms. Allocated memory was 83.9MB in the beginning and 146.8MB in the end (delta: 62.9MB). Free memory was 47.0MB in the beginning and 104.5MB in the end (delta: -57.5MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2023-09-01 02:05:56,811 INFO L158 Benchmark]: Witness Printer took 29.25ms. Allocated memory is still 146.8MB. Free memory was 103.4MB in the beginning and 101.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 02:05:56,812 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 60.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.29ms. Allocated memory is still 83.9MB. Free memory was 61.0MB in the beginning and 49.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.15ms. Allocated memory is still 83.9MB. Free memory was 49.6MB in the beginning and 47.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.57ms. Allocated memory is still 83.9MB. Free memory was 47.7MB in the beginning and 46.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 431.59ms. Allocated memory is still 83.9MB. Free memory was 46.4MB in the beginning and 47.4MB in the end (delta: -994.3kB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6398.72ms. Allocated memory was 83.9MB in the beginning and 146.8MB in the end (delta: 62.9MB). Free memory was 47.0MB in the beginning and 104.5MB in the end (delta: -57.5MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. * Witness Printer took 29.25ms. Allocated memory is still 146.8MB. Free memory was 103.4MB in the beginning and 101.3MB in the end (delta: 2.1MB). 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: 3.0s, 119 PlacesBefore, 43 PlacesAfterwards, 114 TransitionsBefore, 36 TransitionsAfterwards, 748 CoEnabledTransitionPairs, 7 FixpointIterations, 76 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 101 TotalNumberOfCompositions, 5259 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1794, independent: 1526, independent conditional: 0, independent unconditional: 1526, dependent: 268, dependent conditional: 0, dependent unconditional: 268, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 301, independent: 285, independent conditional: 0, independent unconditional: 285, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1794, independent: 1241, independent conditional: 0, independent unconditional: 1241, dependent: 252, dependent conditional: 0, dependent unconditional: 252, unknown: 301, unknown conditional: 0, unknown unconditional: 301] , Statistics on independence cache: Total cache size (in pairs): 115, Positive cache size: 101, Positive conditional cache size: 0, Positive unconditional cache size: 101, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 130]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 109]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 145 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.3s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 529 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 337 mSDsluCounter, 105 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1469 IncrementalHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 56 mSDtfsCounter, 1469 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=11, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 220 ConstructedInterpolants, 0 QuantifiedInterpolants, 1019 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 02:05:56,829 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