./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe037.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe037.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e4a27807726d35f891e97d8bb2a7e6664171035f3f5de29d992fc7dfa583447 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:51:35,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:51:35,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:51:35,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:51:35,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:51:35,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:51:35,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:51:35,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:51:35,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:51:35,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:51:35,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:51:35,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:51:35,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:51:35,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:51:35,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:51:35,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:51:35,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:51:35,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:51:35,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:51:35,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:51:35,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:51:35,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:51:35,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:51:35,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:51:35,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:51:35,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:51:35,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:51:35,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:51:35,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:51:35,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:51:35,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:51:35,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:51:35,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:51:35,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:51:35,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:51:35,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:51:35,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:51:35,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:51:35,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:51:35,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:51:35,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:51:35,339 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:51:35,372 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:51:35,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:51:35,374 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:51:35,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:51:35,375 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:51:35,375 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:51:35,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:51:35,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:51:35,377 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:51:35,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:51:35,378 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:51:35,378 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:51:35,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:51:35,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:51:35,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:51:35,379 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:51:35,379 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:51:35,379 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:51:35,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:51:35,380 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:51:35,380 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:51:35,380 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:51:35,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:51:35,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:51:35,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:51:35,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:51:35,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:51:35,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:51:35,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:51:35,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:51:35,382 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:51:35,383 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:51:35,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:51:35,383 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:51:35,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e4a27807726d35f891e97d8bb2a7e6664171035f3f5de29d992fc7dfa583447 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:51:35,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:51:35,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:51:35,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:51:35,730 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:51:35,730 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:51:35,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037.i [2023-08-29 20:51:36,821 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:51:37,047 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:51:37,047 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037.i [2023-08-29 20:51:37,060 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adc34bc56/d65b84b1e39c4370ae679ebafae8d6ed/FLAGeccc36c7d [2023-08-29 20:51:37,074 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adc34bc56/d65b84b1e39c4370ae679ebafae8d6ed [2023-08-29 20:51:37,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:51:37,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:51:37,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:51:37,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:51:37,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:51:37,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:51:37" (1/1) ... [2023-08-29 20:51:37,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18101299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:37, skipping insertion in model container [2023-08-29 20:51:37,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:51:37" (1/1) ... [2023-08-29 20:51:37,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:51:37,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:51:37,317 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037.i[941,954] [2023-08-29 20:51:37,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:51:37,504 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:51:37,519 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037.i[941,954] [2023-08-29 20:51:37,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:51:37,609 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:51:37,610 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:51:37,615 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:51:37,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:37 WrapperNode [2023-08-29 20:51:37,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:51:37,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:51:37,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:51:37,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:51:37,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:37" (1/1) ... [2023-08-29 20:51:37,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:37" (1/1) ... [2023-08-29 20:51:37,680 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-08-29 20:51:37,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:51:37,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:51:37,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:51:37,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:51:37,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:37" (1/1) ... [2023-08-29 20:51:37,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:37" (1/1) ... [2023-08-29 20:51:37,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:37" (1/1) ... [2023-08-29 20:51:37,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:37" (1/1) ... [2023-08-29 20:51:37,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:37" (1/1) ... [2023-08-29 20:51:37,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:37" (1/1) ... [2023-08-29 20:51:37,723 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:37" (1/1) ... [2023-08-29 20:51:37,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:37" (1/1) ... [2023-08-29 20:51:37,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:51:37,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:51:37,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:51:37,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:51:37,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:37" (1/1) ... [2023-08-29 20:51:37,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:51:37,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:51:37,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 20:51:37,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 20:51:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:51:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:51:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:51:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:51:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:51:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-29 20:51:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-29 20:51:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-29 20:51:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-29 20:51:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-29 20:51:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-29 20:51:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:51:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:51:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:51:37,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:51:37,815 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:51:38,004 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:51:38,020 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:51:38,219 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:51:38,226 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:51:38,228 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:51:38,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:51:38 BoogieIcfgContainer [2023-08-29 20:51:38,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:51:38,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:51:38,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:51:38,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:51:38,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:51:37" (1/3) ... [2023-08-29 20:51:38,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a36e3d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:51:38, skipping insertion in model container [2023-08-29 20:51:38,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:37" (2/3) ... [2023-08-29 20:51:38,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a36e3d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:51:38, skipping insertion in model container [2023-08-29 20:51:38,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:51:38" (3/3) ... [2023-08-29 20:51:38,240 INFO L112 eAbstractionObserver]: Analyzing ICFG safe037.i [2023-08-29 20:51:38,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:51:38,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-29 20:51:38,257 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:51:38,349 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:51:38,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 96 transitions, 207 flow [2023-08-29 20:51:38,463 INFO L130 PetriNetUnfolder]: 2/93 cut-off events. [2023-08-29 20:51:38,463 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:51:38,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-29 20:51:38,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 96 transitions, 207 flow [2023-08-29 20:51:38,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 89 transitions, 187 flow [2023-08-29 20:51:38,476 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:51:38,489 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 89 transitions, 187 flow [2023-08-29 20:51:38,493 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 89 transitions, 187 flow [2023-08-29 20:51:38,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 89 transitions, 187 flow [2023-08-29 20:51:38,525 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2023-08-29 20:51:38,526 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:51:38,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-29 20:51:38,529 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2023-08-29 20:51:41,154 INFO L134 LiptonReduction]: Checked pairs total: 3051 [2023-08-29 20:51:41,155 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-08-29 20:51:41,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:51:41,172 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;@d9a83db, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:51:41,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-29 20:51:41,173 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 20:51:41,173 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:51:41,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:41,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:51:41,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:51:41,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:41,179 INFO L85 PathProgramCache]: Analyzing trace with hash 343, now seen corresponding path program 1 times [2023-08-29 20:51:41,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:41,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37982162] [2023-08-29 20:51:41,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:41,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:41,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:41,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37982162] [2023-08-29 20:51:41,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37982162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:41,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:41,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:51:41,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305476948] [2023-08-29 20:51:41,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:41,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:51:41,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:41,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:51:41,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:51:41,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 187 [2023-08-29 20:51:41,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:41,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:41,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 187 [2023-08-29 20:51:41,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:41,431 INFO L130 PetriNetUnfolder]: 272/454 cut-off events. [2023-08-29 20:51:41,431 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:51:41,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 454 events. 272/454 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1967 event pairs, 272 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 906. Up to 433 conditions per place. [2023-08-29 20:51:41,438 INFO L137 encePairwiseOnDemand]: 180/187 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-29 20:51:41,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 79 flow [2023-08-29 20:51:41,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:51:41,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:51:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 203 transitions. [2023-08-29 20:51:41,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5427807486631016 [2023-08-29 20:51:41,454 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 203 transitions. [2023-08-29 20:51:41,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 203 transitions. [2023-08-29 20:51:41,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:41,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 203 transitions. [2023-08-29 20:51:41,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:41,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:41,480 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:41,482 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 2 states and 203 transitions. [2023-08-29 20:51:41,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 79 flow [2023-08-29 20:51:41,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 20:51:41,487 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 44 flow [2023-08-29 20:51:41,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, 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=2, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-08-29 20:51:41,492 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-08-29 20:51:41,492 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 44 flow [2023-08-29 20:51:41,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:41,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:41,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:41,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:51:41,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:51:41,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:41,499 INFO L85 PathProgramCache]: Analyzing trace with hash 27807853, now seen corresponding path program 1 times [2023-08-29 20:51:41,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:41,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713636482] [2023-08-29 20:51:41,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:41,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:42,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:42,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713636482] [2023-08-29 20:51:42,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713636482] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:42,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:42,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:51:42,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311646405] [2023-08-29 20:51:42,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:42,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:51:42,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:42,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:51:42,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:51:42,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 187 [2023-08-29 20:51:42,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:42,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:42,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 187 [2023-08-29 20:51:42,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:42,280 INFO L130 PetriNetUnfolder]: 218/373 cut-off events. [2023-08-29 20:51:42,280 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:51:42,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 373 events. 218/373 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1553 event pairs, 57 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 750. Up to 327 conditions per place. [2023-08-29 20:51:42,283 INFO L137 encePairwiseOnDemand]: 183/187 looper letters, 18 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2023-08-29 20:51:42,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 96 flow [2023-08-29 20:51:42,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:51:42,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:51:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 397 transitions. [2023-08-29 20:51:42,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42459893048128344 [2023-08-29 20:51:42,287 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 397 transitions. [2023-08-29 20:51:42,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 397 transitions. [2023-08-29 20:51:42,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:42,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 397 transitions. [2023-08-29 20:51:42,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:42,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:42,292 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:42,292 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 44 flow. Second operand 5 states and 397 transitions. [2023-08-29 20:51:42,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 96 flow [2023-08-29 20:51:42,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 96 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:51:42,293 INFO L231 Difference]: Finished difference. Result has 30 places, 18 transitions, 48 flow [2023-08-29 20:51:42,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=48, PETRI_PLACES=30, PETRI_TRANSITIONS=18} [2023-08-29 20:51:42,294 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places. [2023-08-29 20:51:42,294 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions, 48 flow [2023-08-29 20:51:42,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:42,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:42,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:42,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:51:42,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:51:42,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:42,296 INFO L85 PathProgramCache]: Analyzing trace with hash 27807812, now seen corresponding path program 1 times [2023-08-29 20:51:42,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:42,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668488462] [2023-08-29 20:51:42,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:42,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:42,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:42,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668488462] [2023-08-29 20:51:42,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668488462] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:42,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:42,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:51:42,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829033252] [2023-08-29 20:51:42,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:42,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:51:42,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:42,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:51:42,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:51:42,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 187 [2023-08-29 20:51:42,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:42,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:42,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 187 [2023-08-29 20:51:42,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:42,642 INFO L130 PetriNetUnfolder]: 181/329 cut-off events. [2023-08-29 20:51:42,643 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-29 20:51:42,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 329 events. 181/329 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1286 event pairs, 29 based on Foata normal form. 27/353 useless extension candidates. Maximal degree in co-relation 685. Up to 148 conditions per place. [2023-08-29 20:51:42,646 INFO L137 encePairwiseOnDemand]: 181/187 looper letters, 26 selfloop transitions, 5 changer transitions 1/35 dead transitions. [2023-08-29 20:51:42,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 35 transitions, 154 flow [2023-08-29 20:51:42,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:51:42,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:51:42,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2023-08-29 20:51:42,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946524064171123 [2023-08-29 20:51:42,649 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 370 transitions. [2023-08-29 20:51:42,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 370 transitions. [2023-08-29 20:51:42,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:42,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 370 transitions. [2023-08-29 20:51:42,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:42,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:42,653 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:42,653 INFO L175 Difference]: Start difference. First operand has 30 places, 18 transitions, 48 flow. Second operand 4 states and 370 transitions. [2023-08-29 20:51:42,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 35 transitions, 154 flow [2023-08-29 20:51:42,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 35 transitions, 146 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 20:51:42,655 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 77 flow [2023-08-29 20:51:42,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2023-08-29 20:51:42,656 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2023-08-29 20:51:42,659 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 77 flow [2023-08-29 20:51:42,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:42,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:42,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:42,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:51:42,660 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:51:42,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:42,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1729700129, now seen corresponding path program 1 times [2023-08-29 20:51:42,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:42,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439031318] [2023-08-29 20:51:42,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:42,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:42,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:42,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439031318] [2023-08-29 20:51:42,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439031318] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:42,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:42,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:51:42,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331988402] [2023-08-29 20:51:42,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:42,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:51:42,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:42,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:51:42,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:51:42,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 187 [2023-08-29 20:51:42,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:42,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:42,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 187 [2023-08-29 20:51:42,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:43,096 INFO L130 PetriNetUnfolder]: 97/196 cut-off events. [2023-08-29 20:51:43,097 INFO L131 PetriNetUnfolder]: For 98/98 co-relation queries the response was YES. [2023-08-29 20:51:43,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 196 events. 97/196 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 649 event pairs, 15 based on Foata normal form. 19/212 useless extension candidates. Maximal degree in co-relation 560. Up to 73 conditions per place. [2023-08-29 20:51:43,098 INFO L137 encePairwiseOnDemand]: 181/187 looper letters, 31 selfloop transitions, 8 changer transitions 1/43 dead transitions. [2023-08-29 20:51:43,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 224 flow [2023-08-29 20:51:43,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:51:43,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:51:43,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 462 transitions. [2023-08-29 20:51:43,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49411764705882355 [2023-08-29 20:51:43,101 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 462 transitions. [2023-08-29 20:51:43,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 462 transitions. [2023-08-29 20:51:43,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:43,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 462 transitions. [2023-08-29 20:51:43,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:43,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:43,105 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:43,105 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 77 flow. Second operand 5 states and 462 transitions. [2023-08-29 20:51:43,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 224 flow [2023-08-29 20:51:43,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 214 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 20:51:43,107 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 117 flow [2023-08-29 20:51:43,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2023-08-29 20:51:43,108 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-29 20:51:43,108 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 117 flow [2023-08-29 20:51:43,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:43,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:43,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:43,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:51:43,109 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:51:43,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:43,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1862200933, now seen corresponding path program 1 times [2023-08-29 20:51:43,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:43,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111407006] [2023-08-29 20:51:43,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:43,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:43,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:43,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111407006] [2023-08-29 20:51:43,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111407006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:43,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:43,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:51:43,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712954117] [2023-08-29 20:51:43,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:43,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:51:43,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:43,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:51:43,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:51:43,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-29 20:51:43,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:43,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:43,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-29 20:51:43,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:43,382 INFO L130 PetriNetUnfolder]: 209/401 cut-off events. [2023-08-29 20:51:43,382 INFO L131 PetriNetUnfolder]: For 438/438 co-relation queries the response was YES. [2023-08-29 20:51:43,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 401 events. 209/401 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1607 event pairs, 27 based on Foata normal form. 10/411 useless extension candidates. Maximal degree in co-relation 1303. Up to 239 conditions per place. [2023-08-29 20:51:43,385 INFO L137 encePairwiseOnDemand]: 181/187 looper letters, 47 selfloop transitions, 4 changer transitions 11/62 dead transitions. [2023-08-29 20:51:43,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 435 flow [2023-08-29 20:51:43,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:51:43,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:51:43,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 536 transitions. [2023-08-29 20:51:43,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47771836007130125 [2023-08-29 20:51:43,388 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 536 transitions. [2023-08-29 20:51:43,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 536 transitions. [2023-08-29 20:51:43,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:43,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 536 transitions. [2023-08-29 20:51:43,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.33333333333333) internal successors, (536), 6 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:43,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:43,392 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:43,392 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 117 flow. Second operand 6 states and 536 transitions. [2023-08-29 20:51:43,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 435 flow [2023-08-29 20:51:43,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 62 transitions, 378 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-29 20:51:43,396 INFO L231 Difference]: Finished difference. Result has 41 places, 27 transitions, 132 flow [2023-08-29 20:51:43,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2023-08-29 20:51:43,397 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-29 20:51:43,397 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 132 flow [2023-08-29 20:51:43,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:43,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:43,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:43,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:51:43,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:51:43,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:43,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1062842179, now seen corresponding path program 2 times [2023-08-29 20:51:43,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:43,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678627056] [2023-08-29 20:51:43,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:43,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:43,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:43,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678627056] [2023-08-29 20:51:43,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678627056] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:43,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:43,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:51:43,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553553866] [2023-08-29 20:51:43,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:43,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:51:43,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:43,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:51:43,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:51:43,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 187 [2023-08-29 20:51:43,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:43,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:43,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 187 [2023-08-29 20:51:43,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:43,772 INFO L130 PetriNetUnfolder]: 99/218 cut-off events. [2023-08-29 20:51:43,772 INFO L131 PetriNetUnfolder]: For 255/281 co-relation queries the response was YES. [2023-08-29 20:51:43,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 218 events. 99/218 cut-off events. For 255/281 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 899 event pairs, 21 based on Foata normal form. 25/226 useless extension candidates. Maximal degree in co-relation 707. Up to 77 conditions per place. [2023-08-29 20:51:43,775 INFO L137 encePairwiseOnDemand]: 181/187 looper letters, 22 selfloop transitions, 11 changer transitions 1/40 dead transitions. [2023-08-29 20:51:43,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 241 flow [2023-08-29 20:51:43,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:51:43,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:51:43,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 540 transitions. [2023-08-29 20:51:43,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48128342245989303 [2023-08-29 20:51:43,777 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 540 transitions. [2023-08-29 20:51:43,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 540 transitions. [2023-08-29 20:51:43,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:43,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 540 transitions. [2023-08-29 20:51:43,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:43,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:43,782 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:43,782 INFO L175 Difference]: Start difference. First operand has 41 places, 27 transitions, 132 flow. Second operand 6 states and 540 transitions. [2023-08-29 20:51:43,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 241 flow [2023-08-29 20:51:43,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 234 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-29 20:51:43,784 INFO L231 Difference]: Finished difference. Result has 44 places, 28 transitions, 168 flow [2023-08-29 20:51:43,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=44, PETRI_TRANSITIONS=28} [2023-08-29 20:51:43,785 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2023-08-29 20:51:43,786 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 28 transitions, 168 flow [2023-08-29 20:51:43,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:43,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:43,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:43,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:51:43,787 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:51:43,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:43,787 INFO L85 PathProgramCache]: Analyzing trace with hash 181424064, now seen corresponding path program 1 times [2023-08-29 20:51:43,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:43,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512638822] [2023-08-29 20:51:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:43,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:43,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:43,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512638822] [2023-08-29 20:51:43,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512638822] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:43,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:43,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:51:43,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458521569] [2023-08-29 20:51:43,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:43,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:51:43,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:43,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:51:43,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:51:43,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-29 20:51:43,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 28 transitions, 168 flow. Second operand has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:43,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:43,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-29 20:51:43,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:44,061 INFO L130 PetriNetUnfolder]: 222/435 cut-off events. [2023-08-29 20:51:44,061 INFO L131 PetriNetUnfolder]: For 858/858 co-relation queries the response was YES. [2023-08-29 20:51:44,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 435 events. 222/435 cut-off events. For 858/858 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1916 event pairs, 34 based on Foata normal form. 1/436 useless extension candidates. Maximal degree in co-relation 1725. Up to 283 conditions per place. [2023-08-29 20:51:44,064 INFO L137 encePairwiseOnDemand]: 183/187 looper letters, 27 selfloop transitions, 1 changer transitions 30/58 dead transitions. [2023-08-29 20:51:44,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 479 flow [2023-08-29 20:51:44,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:51:44,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:51:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2023-08-29 20:51:44,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4737967914438503 [2023-08-29 20:51:44,066 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2023-08-29 20:51:44,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2023-08-29 20:51:44,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:44,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2023-08-29 20:51:44,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:44,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:44,069 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:44,069 INFO L175 Difference]: Start difference. First operand has 44 places, 28 transitions, 168 flow. Second operand 5 states and 443 transitions. [2023-08-29 20:51:44,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 479 flow [2023-08-29 20:51:44,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 417 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-08-29 20:51:44,074 INFO L231 Difference]: Finished difference. Result has 47 places, 26 transitions, 138 flow [2023-08-29 20:51:44,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=40, 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=5, PETRI_FLOW=138, PETRI_PLACES=47, PETRI_TRANSITIONS=26} [2023-08-29 20:51:44,075 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2023-08-29 20:51:44,075 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 138 flow [2023-08-29 20:51:44,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:44,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:44,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:44,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:51:44,076 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:51:44,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:44,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1274819730, now seen corresponding path program 2 times [2023-08-29 20:51:44,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:44,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113229608] [2023-08-29 20:51:44,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:44,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:44,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:44,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113229608] [2023-08-29 20:51:44,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113229608] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:44,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:44,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:51:44,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472701127] [2023-08-29 20:51:44,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:44,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:51:44,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:44,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:51:44,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:51:44,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-29 20:51:44,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 26 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:44,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:44,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-29 20:51:44,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:44,303 INFO L130 PetriNetUnfolder]: 165/325 cut-off events. [2023-08-29 20:51:44,304 INFO L131 PetriNetUnfolder]: For 425/425 co-relation queries the response was YES. [2023-08-29 20:51:44,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1196 conditions, 325 events. 165/325 cut-off events. For 425/425 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1263 event pairs, 77 based on Foata normal form. 1/326 useless extension candidates. Maximal degree in co-relation 1183. Up to 154 conditions per place. [2023-08-29 20:51:44,305 INFO L137 encePairwiseOnDemand]: 181/187 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2023-08-29 20:51:44,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 364 flow [2023-08-29 20:51:44,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:51:44,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:51:44,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2023-08-29 20:51:44,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663101604278075 [2023-08-29 20:51:44,307 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 436 transitions. [2023-08-29 20:51:44,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 436 transitions. [2023-08-29 20:51:44,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:44,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 436 transitions. [2023-08-29 20:51:44,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:44,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:44,311 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:44,311 INFO L175 Difference]: Start difference. First operand has 47 places, 26 transitions, 138 flow. Second operand 5 states and 436 transitions. [2023-08-29 20:51:44,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 364 flow [2023-08-29 20:51:44,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 291 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-08-29 20:51:44,314 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-08-29 20:51:44,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-08-29 20:51:44,314 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-08-29 20:51:44,315 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-08-29 20:51:44,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:51:44,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-29 20:51:44,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-29 20:51:44,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-29 20:51:44,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-29 20:51:44,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-29 20:51:44,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-29 20:51:44,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-29 20:51:44,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-29 20:51:44,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-29 20:51:44,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-29 20:51:44,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-29 20:51:44,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 20:51:44,320 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-08-29 20:51:44,322 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:51:44,323 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:51:44,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:51:44 BasicIcfg [2023-08-29 20:51:44,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:51:44,326 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:51:44,326 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:51:44,327 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:51:44,327 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:51:38" (3/4) ... [2023-08-29 20:51:44,330 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 20:51:44,335 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-29 20:51:44,335 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-29 20:51:44,336 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-29 20:51:44,339 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-29 20:51:44,339 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 20:51:44,340 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 20:51:44,340 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 20:51:44,366 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 20:51:44,367 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:51:44,367 INFO L158 Benchmark]: Toolchain (without parser) took 7290.18ms. Allocated memory was 69.2MB in the beginning and 130.0MB in the end (delta: 60.8MB). Free memory was 43.7MB in the beginning and 84.7MB in the end (delta: -41.0MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2023-08-29 20:51:44,368 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 69.2MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:51:44,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 538.33ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 43.4MB in the beginning and 64.4MB in the end (delta: -21.0MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2023-08-29 20:51:44,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.26ms. Allocated memory is still 88.1MB. Free memory was 64.4MB in the beginning and 62.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:51:44,368 INFO L158 Benchmark]: Boogie Preprocessor took 49.52ms. Allocated memory is still 88.1MB. Free memory was 62.2MB in the beginning and 61.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:51:44,369 INFO L158 Benchmark]: RCFGBuilder took 499.71ms. Allocated memory is still 88.1MB. Free memory was 60.6MB in the beginning and 46.3MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-29 20:51:44,369 INFO L158 Benchmark]: TraceAbstraction took 6092.48ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 45.5MB in the beginning and 87.8MB in the end (delta: -42.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:51:44,369 INFO L158 Benchmark]: Witness Printer took 40.50ms. Allocated memory is still 130.0MB. Free memory was 87.8MB in the beginning and 84.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 20:51:44,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 69.2MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 538.33ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 43.4MB in the beginning and 64.4MB in the end (delta: -21.0MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.26ms. Allocated memory is still 88.1MB. Free memory was 64.4MB in the beginning and 62.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.52ms. Allocated memory is still 88.1MB. Free memory was 62.2MB in the beginning and 61.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 499.71ms. Allocated memory is still 88.1MB. Free memory was 60.6MB in the beginning and 46.3MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6092.48ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 45.5MB in the beginning and 87.8MB in the end (delta: -42.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 40.50ms. Allocated memory is still 130.0MB. Free memory was 87.8MB in the beginning and 84.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 97 PlacesBefore, 35 PlacesAfterwards, 89 TransitionsBefore, 26 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 91 TotalNumberOfCompositions, 3051 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1679, independent: 1589, independent conditional: 0, independent unconditional: 1589, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 820, independent: 800, independent conditional: 0, independent unconditional: 800, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1679, independent: 789, independent conditional: 0, independent unconditional: 789, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 820, unknown conditional: 0, unknown unconditional: 820] , Statistics on independence cache: Total cache size (in pairs): 70, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 784]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 119 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 338 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 262 mSDsluCounter, 137 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 94 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 707 IncrementalHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 43 mSDtfsCounter, 707 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred in iteration=6, InterpolantAutomatonStates: 38, 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, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 592 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 20:51:44,391 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