./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 02:18:01,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 02:18:01,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 02:18:01,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 02:18:01,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 02:18:01,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 02:18:01,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 02:18:01,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 02:18:01,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 02:18:01,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 02:18:01,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 02:18:01,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 02:18:01,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 02:18:01,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 02:18:01,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 02:18:01,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 02:18:01,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 02:18:01,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 02:18:01,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 02:18:01,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 02:18:01,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 02:18:01,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 02:18:01,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 02:18:01,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 02:18:01,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 02:18:01,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 02:18:01,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 02:18:01,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 02:18:01,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 02:18:01,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 02:18:01,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 02:18:01,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 02:18:01,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 02:18:01,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 02:18:01,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 02:18:01,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 02:18:01,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 02:18:01,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 02:18:01,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 02:18:01,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 02:18:01,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 02:18:01,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 02:18:01,398 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 02:18:01,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 02:18:01,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 02:18:01,399 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 02:18:01,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 02:18:01,400 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 02:18:01,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 02:18:01,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 02:18:01,401 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 02:18:01,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 02:18:01,402 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 02:18:01,402 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 02:18:01,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 02:18:01,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 02:18:01,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 02:18:01,402 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 02:18:01,402 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 02:18:01,403 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 02:18:01,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 02:18:01,403 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 02:18:01,403 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 02:18:01,403 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 02:18:01,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 02:18:01,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 02:18:01,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 02:18:01,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:18:01,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 02:18:01,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 02:18:01,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 02:18:01,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 02:18:01,404 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 02:18:01,404 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 02:18:01,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 02:18:01,405 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 02:18:01,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 02:18:01,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 02:18:01,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 02:18:01,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 02:18:01,651 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 02:18:01,651 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 02:18:01,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-09-01 02:18:02,668 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 02:18:02,795 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 02:18:02,795 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-09-01 02:18:02,805 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4b90dd10/bc0b8110631f412f989548fb0145bef6/FLAGf864c4ece [2023-09-01 02:18:02,814 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4b90dd10/bc0b8110631f412f989548fb0145bef6 [2023-09-01 02:18:02,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 02:18:02,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 02:18:02,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 02:18:02,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 02:18:02,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 02:18:02,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:18:02" (1/1) ... [2023-09-01 02:18:02,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f0ae58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:02, skipping insertion in model container [2023-09-01 02:18:02,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:18:02" (1/1) ... [2023-09-01 02:18:02,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 02:18:02,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:18:02,949 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2410,2423] [2023-09-01 02:18:02,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:18:02,963 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 02:18:02,992 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2410,2423] [2023-09-01 02:18:02,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:18:03,003 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:18:03,004 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:18:03,009 INFO L208 MainTranslator]: Completed translation [2023-09-01 02:18:03,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:03 WrapperNode [2023-09-01 02:18:03,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 02:18:03,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 02:18:03,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 02:18:03,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 02:18:03,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:03" (1/1) ... [2023-09-01 02:18:03,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:03" (1/1) ... [2023-09-01 02:18:03,044 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-09-01 02:18:03,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 02:18:03,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 02:18:03,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 02:18:03,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 02:18:03,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:03" (1/1) ... [2023-09-01 02:18:03,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:03" (1/1) ... [2023-09-01 02:18:03,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:03" (1/1) ... [2023-09-01 02:18:03,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:03" (1/1) ... [2023-09-01 02:18:03,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:03" (1/1) ... [2023-09-01 02:18:03,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:03" (1/1) ... [2023-09-01 02:18:03,081 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:03" (1/1) ... [2023-09-01 02:18:03,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:03" (1/1) ... [2023-09-01 02:18:03,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 02:18:03,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 02:18:03,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 02:18:03,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 02:18:03,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:03" (1/1) ... [2023-09-01 02:18:03,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:18:03,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:18:03,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 02:18:03,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 02:18:03,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 02:18:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 02:18:03,148 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 02:18:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 02:18:03,148 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 02:18:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 02:18:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 02:18:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 02:18:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 02:18:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 02:18:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 02:18:03,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 02:18:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 02:18:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 02:18:03,150 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 02:18:03,231 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 02:18:03,232 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 02:18:03,405 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 02:18:03,425 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 02:18:03,425 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 02:18:03,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:18:03 BoogieIcfgContainer [2023-09-01 02:18:03,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 02:18:03,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 02:18:03,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 02:18:03,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 02:18:03,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:18:02" (1/3) ... [2023-09-01 02:18:03,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4837cb01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:18:03, skipping insertion in model container [2023-09-01 02:18:03,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:03" (2/3) ... [2023-09-01 02:18:03,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4837cb01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:18:03, skipping insertion in model container [2023-09-01 02:18:03,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:18:03" (3/3) ... [2023-09-01 02:18:03,442 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2023-09-01 02:18:03,455 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 02:18:03,455 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-09-01 02:18:03,455 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 02:18:03,508 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 02:18:03,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 104 transitions, 224 flow [2023-09-01 02:18:03,585 INFO L130 PetriNetUnfolder]: 11/102 cut-off events. [2023-09-01 02:18:03,586 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 02:18:03,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 102 events. 11/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2023-09-01 02:18:03,596 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 104 transitions, 224 flow [2023-09-01 02:18:03,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 98 transitions, 208 flow [2023-09-01 02:18:03,609 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 02:18:03,614 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 98 transitions, 208 flow [2023-09-01 02:18:03,616 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 98 transitions, 208 flow [2023-09-01 02:18:03,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 98 transitions, 208 flow [2023-09-01 02:18:03,636 INFO L130 PetriNetUnfolder]: 11/98 cut-off events. [2023-09-01 02:18:03,637 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 02:18:03,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 11/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 130 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2023-09-01 02:18:03,638 INFO L119 LiptonReduction]: Number of co-enabled transitions 1476 [2023-09-01 02:18:06,114 INFO L134 LiptonReduction]: Checked pairs total: 1479 [2023-09-01 02:18:06,114 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-09-01 02:18:06,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 02:18:06,128 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;@252457dd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 02:18:06,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-09-01 02:18:06,129 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-09-01 02:18:06,129 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:18:06,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:06,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 02:18:06,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:18:06,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:06,133 INFO L85 PathProgramCache]: Analyzing trace with hash 430, now seen corresponding path program 1 times [2023-09-01 02:18:06,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:06,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502710283] [2023-09-01 02:18:06,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:06,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:06,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:06,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502710283] [2023-09-01 02:18:06,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502710283] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:06,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:06,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 02:18:06,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441734665] [2023-09-01 02:18:06,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:06,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 02:18:06,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:06,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 02:18:06,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 02:18:06,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 205 [2023-09-01 02:18:06,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:06,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 205 [2023-09-01 02:18:06,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:06,264 INFO L130 PetriNetUnfolder]: 45/80 cut-off events. [2023-09-01 02:18:06,264 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 02:18:06,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 80 events. 45/80 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 159 event pairs, 21 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 124. Up to 81 conditions per place. [2023-09-01 02:18:06,266 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 19 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-09-01 02:18:06,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 88 flow [2023-09-01 02:18:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 02:18:06,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 02:18:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 210 transitions. [2023-09-01 02:18:06,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2023-09-01 02:18:06,279 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 210 transitions. [2023-09-01 02:18:06,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 210 transitions. [2023-09-01 02:18:06,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:06,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 210 transitions. [2023-09-01 02:18:06,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,297 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,298 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 56 flow. Second operand 2 states and 210 transitions. [2023-09-01 02:18:06,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 88 flow [2023-09-01 02:18:06,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 02:18:06,300 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 42 flow [2023-09-01 02:18:06,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, 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=42, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2023-09-01 02:18:06,304 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-09-01 02:18:06,305 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 42 flow [2023-09-01 02:18:06,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:06,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:18:06,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 02:18:06,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:18:06,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:06,309 INFO L85 PathProgramCache]: Analyzing trace with hash 421854, now seen corresponding path program 1 times [2023-09-01 02:18:06,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:06,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882518481] [2023-09-01 02:18:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:06,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:06,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:06,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882518481] [2023-09-01 02:18:06,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882518481] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:06,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:06,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:18:06,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71131686] [2023-09-01 02:18:06,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:06,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:18:06,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:06,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:18:06,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:18:06,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 205 [2023-09-01 02:18:06,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 19 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:06,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 205 [2023-09-01 02:18:06,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:06,509 INFO L130 PetriNetUnfolder]: 41/72 cut-off events. [2023-09-01 02:18:06,509 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 02:18:06,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 72 events. 41/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 131 event pairs, 19 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 147. Up to 72 conditions per place. [2023-09-01 02:18:06,510 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-09-01 02:18:06,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 72 flow [2023-09-01 02:18:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:18:06,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:18:06,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2023-09-01 02:18:06,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46504065040650405 [2023-09-01 02:18:06,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2023-09-01 02:18:06,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2023-09-01 02:18:06,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:06,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2023-09-01 02:18:06,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,521 INFO L175 Difference]: Start difference. First operand has 21 places, 19 transitions, 42 flow. Second operand 3 states and 286 transitions. [2023-09-01 02:18:06,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 72 flow [2023-09-01 02:18:06,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 02:18:06,521 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 40 flow [2023-09-01 02:18:06,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2023-09-01 02:18:06,522 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-09-01 02:18:06,522 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 40 flow [2023-09-01 02:18:06,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:06,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:18:06,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 02:18:06,523 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:18:06,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:06,523 INFO L85 PathProgramCache]: Analyzing trace with hash 421855, now seen corresponding path program 1 times [2023-09-01 02:18:06,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:06,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847912670] [2023-09-01 02:18:06,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:06,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:06,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:06,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847912670] [2023-09-01 02:18:06,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847912670] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:06,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:06,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:18:06,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074857109] [2023-09-01 02:18:06,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:06,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:18:06,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:06,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:18:06,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:18:06,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 205 [2023-09-01 02:18:06,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:06,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 205 [2023-09-01 02:18:06,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:06,640 INFO L130 PetriNetUnfolder]: 37/64 cut-off events. [2023-09-01 02:18:06,641 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 02:18:06,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 64 events. 37/64 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 108 event pairs, 17 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 132. Up to 64 conditions per place. [2023-09-01 02:18:06,642 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-09-01 02:18:06,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 66 flow [2023-09-01 02:18:06,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:18:06,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:18:06,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-09-01 02:18:06,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44227642276422763 [2023-09-01 02:18:06,644 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-09-01 02:18:06,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-09-01 02:18:06,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:06,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-09-01 02:18:06,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,647 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 40 flow. Second operand 3 states and 272 transitions. [2023-09-01 02:18:06,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 66 flow [2023-09-01 02:18:06,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 65 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:18:06,648 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 37 flow [2023-09-01 02:18:06,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2023-09-01 02:18:06,648 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-09-01 02:18:06,649 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 37 flow [2023-09-01 02:18:06,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:06,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:18:06,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 02:18:06,650 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:18:06,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:06,650 INFO L85 PathProgramCache]: Analyzing trace with hash 405413125, now seen corresponding path program 1 times [2023-09-01 02:18:06,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:06,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728370306] [2023-09-01 02:18:06,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:06,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:06,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:06,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:06,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728370306] [2023-09-01 02:18:06,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728370306] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:06,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:06,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 02:18:06,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420439195] [2023-09-01 02:18:06,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:06,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:18:06,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:06,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:18:06,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:18:06,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 205 [2023-09-01 02:18:06,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 37 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:06,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 205 [2023-09-01 02:18:06,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:06,788 INFO L130 PetriNetUnfolder]: 29/52 cut-off events. [2023-09-01 02:18:06,788 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 02:18:06,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 52 events. 29/52 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 77 event pairs, 13 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 109. Up to 52 conditions per place. [2023-09-01 02:18:06,789 INFO L137 encePairwiseOnDemand]: 203/205 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-09-01 02:18:06,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 63 flow [2023-09-01 02:18:06,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:18:06,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:18:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-09-01 02:18:06,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195121951219512 [2023-09-01 02:18:06,791 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-09-01 02:18:06,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-09-01 02:18:06,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:06,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-09-01 02:18:06,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,794 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 37 flow. Second operand 3 states and 258 transitions. [2023-09-01 02:18:06,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 63 flow [2023-09-01 02:18:06,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:18:06,795 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-09-01 02:18:06,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-09-01 02:18:06,796 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-09-01 02:18:06,796 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-09-01 02:18:06,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:06,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:18:06,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 02:18:06,798 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:18:06,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:06,798 INFO L85 PathProgramCache]: Analyzing trace with hash 405413126, now seen corresponding path program 1 times [2023-09-01 02:18:06,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:06,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090631623] [2023-09-01 02:18:06,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:06,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:06,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:06,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:06,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090631623] [2023-09-01 02:18:06,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090631623] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:06,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:06,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 02:18:06,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988400435] [2023-09-01 02:18:06,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:06,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:18:06,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:06,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:18:06,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:18:06,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 205 [2023-09-01 02:18:06,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:06,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 205 [2023-09-01 02:18:06,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:06,970 INFO L130 PetriNetUnfolder]: 21/40 cut-off events. [2023-09-01 02:18:06,970 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 02:18:06,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 40 events. 21/40 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 9 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 86. Up to 40 conditions per place. [2023-09-01 02:18:06,971 INFO L137 encePairwiseOnDemand]: 203/205 looper letters, 12 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2023-09-01 02:18:06,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 60 flow [2023-09-01 02:18:06,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:18:06,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:18:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-09-01 02:18:06,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44715447154471544 [2023-09-01 02:18:06,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-09-01 02:18:06,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-09-01 02:18:06,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:06,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-09-01 02:18:06,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,974 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,974 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 3 states and 275 transitions. [2023-09-01 02:18:06,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 60 flow [2023-09-01 02:18:06,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 13 transitions, 59 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:18:06,975 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 35 flow [2023-09-01 02:18:06,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-09-01 02:18:06,976 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-09-01 02:18:06,976 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 35 flow [2023-09-01 02:18:06,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:06,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:06,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:06,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 02:18:06,976 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:18:06,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:06,977 INFO L85 PathProgramCache]: Analyzing trace with hash -883757984, now seen corresponding path program 1 times [2023-09-01 02:18:06,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:06,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577283820] [2023-09-01 02:18:06,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:06,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:07,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:07,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:07,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577283820] [2023-09-01 02:18:07,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577283820] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:07,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:07,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 02:18:07,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858946520] [2023-09-01 02:18:07,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:07,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:18:07,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:07,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:18:07,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:18:07,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 205 [2023-09-01 02:18:07,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:07,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:07,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 205 [2023-09-01 02:18:07,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:07,075 INFO L130 PetriNetUnfolder]: 29/54 cut-off events. [2023-09-01 02:18:07,075 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:18:07,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 54 events. 29/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 1 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 116. Up to 45 conditions per place. [2023-09-01 02:18:07,076 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 17 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2023-09-01 02:18:07,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 19 transitions, 86 flow [2023-09-01 02:18:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:18:07,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:18:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-09-01 02:18:07,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2023-09-01 02:18:07,078 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-09-01 02:18:07,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-09-01 02:18:07,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:07,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-09-01 02:18:07,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:07,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:07,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:07,090 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 35 flow. Second operand 3 states and 290 transitions. [2023-09-01 02:18:07,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 19 transitions, 86 flow [2023-09-01 02:18:07,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 85 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:18:07,091 INFO L231 Difference]: Finished difference. Result has 22 places, 14 transitions, 46 flow [2023-09-01 02:18:07,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2023-09-01 02:18:07,092 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -5 predicate places. [2023-09-01 02:18:07,092 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 46 flow [2023-09-01 02:18:07,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:07,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:07,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:07,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 02:18:07,094 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:18:07,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:07,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1529812726, now seen corresponding path program 1 times [2023-09-01 02:18:07,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:07,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549370825] [2023-09-01 02:18:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:07,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:18:07,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:07,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549370825] [2023-09-01 02:18:07,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549370825] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:07,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:07,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 02:18:07,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441286879] [2023-09-01 02:18:07,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:07,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:18:07,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:07,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:18:07,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:18:07,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 205 [2023-09-01 02:18:07,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 14 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:07,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:07,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 205 [2023-09-01 02:18:07,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:07,201 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2023-09-01 02:18:07,202 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-09-01 02:18:07,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 73 events. 40/73 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 135 event pairs, 6 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 187. Up to 49 conditions per place. [2023-09-01 02:18:07,204 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-09-01 02:18:07,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 21 transitions, 110 flow [2023-09-01 02:18:07,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:18:07,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:18:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-09-01 02:18:07,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2023-09-01 02:18:07,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-09-01 02:18:07,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-09-01 02:18:07,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:07,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-09-01 02:18:07,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:07,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:07,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:07,208 INFO L175 Difference]: Start difference. First operand has 22 places, 14 transitions, 46 flow. Second operand 3 states and 290 transitions. [2023-09-01 02:18:07,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 21 transitions, 110 flow [2023-09-01 02:18:07,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:18:07,210 INFO L231 Difference]: Finished difference. Result has 24 places, 15 transitions, 56 flow [2023-09-01 02:18:07,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=24, PETRI_TRANSITIONS=15} [2023-09-01 02:18:07,211 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -3 predicate places. [2023-09-01 02:18:07,211 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 15 transitions, 56 flow [2023-09-01 02:18:07,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:07,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:07,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:07,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 02:18:07,212 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:18:07,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:07,212 INFO L85 PathProgramCache]: Analyzing trace with hash -605431645, now seen corresponding path program 1 times [2023-09-01 02:18:07,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:07,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350063759] [2023-09-01 02:18:07,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:07,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:18:07,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:07,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350063759] [2023-09-01 02:18:07,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350063759] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:18:07,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537042135] [2023-09-01 02:18:07,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:07,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:07,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:18:07,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:18:07,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 02:18:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:07,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 02:18:07,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:18:07,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:07,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:18:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:08,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537042135] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:18:08,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:18:08,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2023-09-01 02:18:08,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194039401] [2023-09-01 02:18:08,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:18:08,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 02:18:08,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:08,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 02:18:08,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-09-01 02:18:08,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 205 [2023-09-01 02:18:08,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 15 transitions, 56 flow. Second operand has 10 states, 10 states have (on average 75.5) internal successors, (755), 10 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:08,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:08,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 205 [2023-09-01 02:18:08,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:08,279 INFO L130 PetriNetUnfolder]: 75/134 cut-off events. [2023-09-01 02:18:08,279 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-09-01 02:18:08,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 134 events. 75/134 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 336 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 381. Up to 53 conditions per place. [2023-09-01 02:18:08,281 INFO L137 encePairwiseOnDemand]: 200/205 looper letters, 44 selfloop transitions, 23 changer transitions 0/67 dead transitions. [2023-09-01 02:18:08,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 67 transitions, 353 flow [2023-09-01 02:18:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 02:18:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 02:18:08,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1155 transitions. [2023-09-01 02:18:08,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375609756097561 [2023-09-01 02:18:08,286 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1155 transitions. [2023-09-01 02:18:08,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1155 transitions. [2023-09-01 02:18:08,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:08,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1155 transitions. [2023-09-01 02:18:08,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 77.0) internal successors, (1155), 15 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:08,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 205.0) internal successors, (3280), 16 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:08,293 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 205.0) internal successors, (3280), 16 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:08,293 INFO L175 Difference]: Start difference. First operand has 24 places, 15 transitions, 56 flow. Second operand 15 states and 1155 transitions. [2023-09-01 02:18:08,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 67 transitions, 353 flow [2023-09-01 02:18:08,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 67 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:18:08,296 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 235 flow [2023-09-01 02:18:08,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=235, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-09-01 02:18:08,297 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-09-01 02:18:08,297 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 235 flow [2023-09-01 02:18:08,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 75.5) internal successors, (755), 10 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:08,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:08,298 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:08,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 02:18:08,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:08,525 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:18:08,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:08,526 INFO L85 PathProgramCache]: Analyzing trace with hash 222277116, now seen corresponding path program 2 times [2023-09-01 02:18:08,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:08,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016024849] [2023-09-01 02:18:08,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:08,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:09,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:09,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:09,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016024849] [2023-09-01 02:18:09,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016024849] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:18:09,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632627661] [2023-09-01 02:18:09,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:18:09,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:09,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:18:09,033 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:18:09,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 02:18:09,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:18:09,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:18:09,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 02:18:09,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:18:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:09,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:18:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:10,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632627661] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:18:10,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:18:10,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-09-01 02:18:10,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347683871] [2023-09-01 02:18:10,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:18:10,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 02:18:10,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:10,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 02:18:10,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-09-01 02:18:10,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 205 [2023-09-01 02:18:10,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 235 flow. Second operand has 17 states, 17 states have (on average 69.29411764705883) internal successors, (1178), 17 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:10,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:10,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 205 [2023-09-01 02:18:10,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:10,944 INFO L130 PetriNetUnfolder]: 255/462 cut-off events. [2023-09-01 02:18:10,944 INFO L131 PetriNetUnfolder]: For 1074/1074 co-relation queries the response was YES. [2023-09-01 02:18:10,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1991 conditions, 462 events. 255/462 cut-off events. For 1074/1074 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1890 event pairs, 0 based on Foata normal form. 12/438 useless extension candidates. Maximal degree in co-relation 1980. Up to 179 conditions per place. [2023-09-01 02:18:10,947 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 68 selfloop transitions, 82 changer transitions 33/183 dead transitions. [2023-09-01 02:18:10,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 183 transitions, 1499 flow [2023-09-01 02:18:10,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-09-01 02:18:10,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-09-01 02:18:10,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1614 transitions. [2023-09-01 02:18:10,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3578713968957871 [2023-09-01 02:18:10,951 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1614 transitions. [2023-09-01 02:18:10,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1614 transitions. [2023-09-01 02:18:10,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:10,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1614 transitions. [2023-09-01 02:18:10,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 73.36363636363636) internal successors, (1614), 22 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:10,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 205.0) internal successors, (4715), 23 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:10,960 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 205.0) internal successors, (4715), 23 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:10,960 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 235 flow. Second operand 22 states and 1614 transitions. [2023-09-01 02:18:10,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 183 transitions, 1499 flow [2023-09-01 02:18:10,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 183 transitions, 1295 flow, removed 93 selfloop flow, removed 3 redundant places. [2023-09-01 02:18:10,983 INFO L231 Difference]: Finished difference. Result has 68 places, 104 transitions, 914 flow [2023-09-01 02:18:10,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=914, PETRI_PLACES=68, PETRI_TRANSITIONS=104} [2023-09-01 02:18:10,984 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 41 predicate places. [2023-09-01 02:18:10,984 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 104 transitions, 914 flow [2023-09-01 02:18:10,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 69.29411764705883) internal successors, (1178), 17 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:10,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:10,985 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:10,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 02:18:11,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-09-01 02:18:11,190 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:18:11,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:11,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1421857516, now seen corresponding path program 3 times [2023-09-01 02:18:11,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:11,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305883633] [2023-09-01 02:18:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:11,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:11,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:11,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:11,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305883633] [2023-09-01 02:18:11,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305883633] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:18:11,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101232263] [2023-09-01 02:18:11,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:18:11,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:11,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:18:11,805 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:18:11,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 02:18:11,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-09-01 02:18:11,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:18:11,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 02:18:11,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:18:12,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:12,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:18:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:18:12,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101232263] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:18:12,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:18:12,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 16 [2023-09-01 02:18:12,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803445271] [2023-09-01 02:18:12,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:18:12,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 02:18:12,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:12,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 02:18:12,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-09-01 02:18:12,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 205 [2023-09-01 02:18:12,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 104 transitions, 914 flow. Second operand has 18 states, 18 states have (on average 69.05555555555556) internal successors, (1243), 18 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:12,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:12,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 205 [2023-09-01 02:18:12,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:13,700 INFO L130 PetriNetUnfolder]: 546/935 cut-off events. [2023-09-01 02:18:13,701 INFO L131 PetriNetUnfolder]: For 2954/2954 co-relation queries the response was YES. [2023-09-01 02:18:13,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4698 conditions, 935 events. 546/935 cut-off events. For 2954/2954 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4398 event pairs, 0 based on Foata normal form. 14/901 useless extension candidates. Maximal degree in co-relation 4680. Up to 325 conditions per place. [2023-09-01 02:18:13,707 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 95 selfloop transitions, 198 changer transitions 32/325 dead transitions. [2023-09-01 02:18:13,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 325 transitions, 3545 flow [2023-09-01 02:18:13,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-09-01 02:18:13,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-09-01 02:18:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1662 transitions. [2023-09-01 02:18:13,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35249204665959705 [2023-09-01 02:18:13,712 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1662 transitions. [2023-09-01 02:18:13,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1662 transitions. [2023-09-01 02:18:13,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:13,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1662 transitions. [2023-09-01 02:18:13,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 72.26086956521739) internal successors, (1662), 23 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:13,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 205.0) internal successors, (4920), 24 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:13,719 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 205.0) internal successors, (4920), 24 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:13,720 INFO L175 Difference]: Start difference. First operand has 68 places, 104 transitions, 914 flow. Second operand 23 states and 1662 transitions. [2023-09-01 02:18:13,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 325 transitions, 3545 flow [2023-09-01 02:18:13,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 325 transitions, 2529 flow, removed 500 selfloop flow, removed 4 redundant places. [2023-09-01 02:18:13,737 INFO L231 Difference]: Finished difference. Result has 94 places, 240 transitions, 2201 flow [2023-09-01 02:18:13,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2201, PETRI_PLACES=94, PETRI_TRANSITIONS=240} [2023-09-01 02:18:13,738 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 67 predicate places. [2023-09-01 02:18:13,738 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 240 transitions, 2201 flow [2023-09-01 02:18:13,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.05555555555556) internal successors, (1243), 18 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:13,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:13,738 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:13,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 02:18:13,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:13,944 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:18:13,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash 953327124, now seen corresponding path program 4 times [2023-09-01 02:18:13,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:13,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607588892] [2023-09-01 02:18:13,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:13,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:14,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:14,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:14,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607588892] [2023-09-01 02:18:14,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607588892] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:18:14,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960370627] [2023-09-01 02:18:14,501 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 02:18:14,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:14,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:18:14,517 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:18:14,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 02:18:14,589 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 02:18:14,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:18:14,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 02:18:14,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:18:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:14,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:18:15,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:15,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960370627] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:18:15,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:18:15,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-09-01 02:18:15,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299591568] [2023-09-01 02:18:15,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:18:15,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 02:18:15,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:15,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 02:18:15,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-09-01 02:18:15,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 205 [2023-09-01 02:18:15,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 240 transitions, 2201 flow. Second operand has 18 states, 18 states have (on average 70.22222222222223) internal successors, (1264), 18 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:15,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:15,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 205 [2023-09-01 02:18:15,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:17,211 INFO L130 PetriNetUnfolder]: 1013/1690 cut-off events. [2023-09-01 02:18:17,211 INFO L131 PetriNetUnfolder]: For 2794/2794 co-relation queries the response was YES. [2023-09-01 02:18:17,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8287 conditions, 1690 events. 1013/1690 cut-off events. For 2794/2794 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8775 event pairs, 4 based on Foata normal form. 49/1739 useless extension candidates. Maximal degree in co-relation 8262. Up to 409 conditions per place. [2023-09-01 02:18:17,228 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 121 selfloop transitions, 414 changer transitions 38/573 dead transitions. [2023-09-01 02:18:17,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 573 transitions, 6044 flow [2023-09-01 02:18:17,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-09-01 02:18:17,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-09-01 02:18:17,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2622 transitions. [2023-09-01 02:18:17,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35528455284552846 [2023-09-01 02:18:17,238 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2622 transitions. [2023-09-01 02:18:17,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2622 transitions. [2023-09-01 02:18:17,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:17,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2622 transitions. [2023-09-01 02:18:17,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 72.83333333333333) internal successors, (2622), 36 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:17,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 205.0) internal successors, (7585), 37 states have internal predecessors, (7585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:17,257 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 205.0) internal successors, (7585), 37 states have internal predecessors, (7585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:17,257 INFO L175 Difference]: Start difference. First operand has 94 places, 240 transitions, 2201 flow. Second operand 36 states and 2622 transitions. [2023-09-01 02:18:17,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 573 transitions, 6044 flow [2023-09-01 02:18:17,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 573 transitions, 5700 flow, removed 166 selfloop flow, removed 4 redundant places. [2023-09-01 02:18:17,320 INFO L231 Difference]: Finished difference. Result has 137 places, 483 transitions, 5623 flow [2023-09-01 02:18:17,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5623, PETRI_PLACES=137, PETRI_TRANSITIONS=483} [2023-09-01 02:18:17,321 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 110 predicate places. [2023-09-01 02:18:17,321 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 483 transitions, 5623 flow [2023-09-01 02:18:17,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.22222222222223) internal successors, (1264), 18 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:17,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:17,322 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:17,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 02:18:17,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:17,529 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:18:17,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:17,529 INFO L85 PathProgramCache]: Analyzing trace with hash 609636454, now seen corresponding path program 5 times [2023-09-01 02:18:17,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:17,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872806804] [2023-09-01 02:18:17,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:17,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:18,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:18,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872806804] [2023-09-01 02:18:18,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872806804] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:18:18,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236606289] [2023-09-01 02:18:18,067 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 02:18:18,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:18,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:18:18,077 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:18:18,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 02:18:18,130 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:18:18,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:18:18,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 02:18:18,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:18:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:18,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:18:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:18:18,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236606289] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:18:18,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:18:18,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 16 [2023-09-01 02:18:18,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125917758] [2023-09-01 02:18:18,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:18:18,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 02:18:18,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:18,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 02:18:18,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-09-01 02:18:18,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 205 [2023-09-01 02:18:18,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 483 transitions, 5623 flow. Second operand has 18 states, 18 states have (on average 69.05555555555556) internal successors, (1243), 18 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:18,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:18,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 205 [2023-09-01 02:18:18,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:20,149 INFO L130 PetriNetUnfolder]: 1459/2409 cut-off events. [2023-09-01 02:18:20,149 INFO L131 PetriNetUnfolder]: For 5100/5100 co-relation queries the response was YES. [2023-09-01 02:18:20,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14274 conditions, 2409 events. 1459/2409 cut-off events. For 5100/5100 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13200 event pairs, 21 based on Foata normal form. 10/2419 useless extension candidates. Maximal degree in co-relation 14235. Up to 639 conditions per place. [2023-09-01 02:18:20,171 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 230 selfloop transitions, 523 changer transitions 85/838 dead transitions. [2023-09-01 02:18:20,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 838 transitions, 11093 flow [2023-09-01 02:18:20,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-09-01 02:18:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-09-01 02:18:20,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1731 transitions. [2023-09-01 02:18:20,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3518292682926829 [2023-09-01 02:18:20,175 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1731 transitions. [2023-09-01 02:18:20,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1731 transitions. [2023-09-01 02:18:20,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:20,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1731 transitions. [2023-09-01 02:18:20,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 72.125) internal successors, (1731), 24 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:20,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 205.0) internal successors, (5125), 25 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:20,188 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 205.0) internal successors, (5125), 25 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:20,188 INFO L175 Difference]: Start difference. First operand has 137 places, 483 transitions, 5623 flow. Second operand 24 states and 1731 transitions. [2023-09-01 02:18:20,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 838 transitions, 11093 flow [2023-09-01 02:18:20,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 838 transitions, 10377 flow, removed 276 selfloop flow, removed 11 redundant places. [2023-09-01 02:18:20,351 INFO L231 Difference]: Finished difference. Result has 155 places, 701 transitions, 9679 flow [2023-09-01 02:18:20,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=5161, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=9679, PETRI_PLACES=155, PETRI_TRANSITIONS=701} [2023-09-01 02:18:20,353 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 128 predicate places. [2023-09-01 02:18:20,354 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 701 transitions, 9679 flow [2023-09-01 02:18:20,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.05555555555556) internal successors, (1243), 18 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:20,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:20,354 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:20,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 02:18:20,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-09-01 02:18:20,561 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:18:20,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:20,561 INFO L85 PathProgramCache]: Analyzing trace with hash -754462680, now seen corresponding path program 6 times [2023-09-01 02:18:20,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:20,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122386310] [2023-09-01 02:18:20,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:20,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:20,903 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 02:18:20,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:20,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122386310] [2023-09-01 02:18:20,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122386310] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:18:20,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737301722] [2023-09-01 02:18:20,904 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 02:18:20,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:20,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:18:20,921 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:18:20,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 02:18:20,984 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-09-01 02:18:20,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:18:20,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 02:18:20,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:18:21,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:18:21,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:18:21,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 02:18:21,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737301722] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:18:21,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:18:21,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 12 [2023-09-01 02:18:21,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871966939] [2023-09-01 02:18:21,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:18:21,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 02:18:21,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:21,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 02:18:21,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-09-01 02:18:21,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 205 [2023-09-01 02:18:21,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 701 transitions, 9679 flow. Second operand has 13 states, 13 states have (on average 79.6923076923077) internal successors, (1036), 13 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:21,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:21,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 205 [2023-09-01 02:18:21,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:21,822 INFO L130 PetriNetUnfolder]: 1187/2006 cut-off events. [2023-09-01 02:18:21,823 INFO L131 PetriNetUnfolder]: For 6237/6237 co-relation queries the response was YES. [2023-09-01 02:18:21,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13022 conditions, 2006 events. 1187/2006 cut-off events. For 6237/6237 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10957 event pairs, 42 based on Foata normal form. 154/2160 useless extension candidates. Maximal degree in co-relation 12979. Up to 719 conditions per place. [2023-09-01 02:18:21,838 INFO L137 encePairwiseOnDemand]: 201/205 looper letters, 293 selfloop transitions, 373 changer transitions 3/669 dead transitions. [2023-09-01 02:18:21,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 669 transitions, 10242 flow [2023-09-01 02:18:21,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:18:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:18:21,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 730 transitions. [2023-09-01 02:18:21,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2023-09-01 02:18:21,840 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 730 transitions. [2023-09-01 02:18:21,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 730 transitions. [2023-09-01 02:18:21,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:21,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 730 transitions. [2023-09-01 02:18:21,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:21,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:21,843 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:21,843 INFO L175 Difference]: Start difference. First operand has 155 places, 701 transitions, 9679 flow. Second operand 9 states and 730 transitions. [2023-09-01 02:18:21,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 669 transitions, 10242 flow [2023-09-01 02:18:21,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 669 transitions, 9771 flow, removed 90 selfloop flow, removed 7 redundant places. [2023-09-01 02:18:21,978 INFO L231 Difference]: Finished difference. Result has 154 places, 642 transitions, 8912 flow [2023-09-01 02:18:21,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=8055, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=358, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8912, PETRI_PLACES=154, PETRI_TRANSITIONS=642} [2023-09-01 02:18:21,980 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 127 predicate places. [2023-09-01 02:18:21,980 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 642 transitions, 8912 flow [2023-09-01 02:18:21,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 79.6923076923077) internal successors, (1036), 13 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:21,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:21,980 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:21,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 02:18:22,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:22,186 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:18:22,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:22,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1390838903, now seen corresponding path program 7 times [2023-09-01 02:18:22,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:22,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19382791] [2023-09-01 02:18:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:22,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:18:22,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:22,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19382791] [2023-09-01 02:18:22,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19382791] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:18:22,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252561326] [2023-09-01 02:18:22,439 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 02:18:22,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:22,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:18:22,440 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:18:22,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 02:18:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:22,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 02:18:22,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:18:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:18:22,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:18:22,793 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:18:22,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252561326] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:18:22,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:18:22,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-09-01 02:18:22,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499758477] [2023-09-01 02:18:22,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:18:22,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 02:18:22,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:22,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 02:18:22,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-09-01 02:18:22,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 205 [2023-09-01 02:18:22,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 642 transitions, 8912 flow. Second operand has 15 states, 15 states have (on average 75.66666666666667) internal successors, (1135), 15 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:22,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:22,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 205 [2023-09-01 02:18:22,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:23,282 INFO L130 PetriNetUnfolder]: 949/1616 cut-off events. [2023-09-01 02:18:23,282 INFO L131 PetriNetUnfolder]: For 4475/4475 co-relation queries the response was YES. [2023-09-01 02:18:23,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10520 conditions, 1616 events. 949/1616 cut-off events. For 4475/4475 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 8356 event pairs, 4 based on Foata normal form. 196/1810 useless extension candidates. Maximal degree in co-relation 10483. Up to 575 conditions per place. [2023-09-01 02:18:23,295 INFO L137 encePairwiseOnDemand]: 200/205 looper letters, 288 selfloop transitions, 226 changer transitions 46/560 dead transitions. [2023-09-01 02:18:23,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 560 transitions, 8592 flow [2023-09-01 02:18:23,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 02:18:23,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 02:18:23,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 622 transitions. [2023-09-01 02:18:23,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37926829268292683 [2023-09-01 02:18:23,297 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 622 transitions. [2023-09-01 02:18:23,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 622 transitions. [2023-09-01 02:18:23,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:23,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 622 transitions. [2023-09-01 02:18:23,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.75) internal successors, (622), 8 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:23,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 205.0) internal successors, (1845), 9 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:23,300 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 205.0) internal successors, (1845), 9 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:23,300 INFO L175 Difference]: Start difference. First operand has 154 places, 642 transitions, 8912 flow. Second operand 8 states and 622 transitions. [2023-09-01 02:18:23,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 560 transitions, 8592 flow [2023-09-01 02:18:23,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 560 transitions, 8177 flow, removed 66 selfloop flow, removed 9 redundant places. [2023-09-01 02:18:23,374 INFO L231 Difference]: Finished difference. Result has 149 places, 473 transitions, 6695 flow [2023-09-01 02:18:23,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=6451, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6695, PETRI_PLACES=149, PETRI_TRANSITIONS=473} [2023-09-01 02:18:23,375 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 122 predicate places. [2023-09-01 02:18:23,375 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 473 transitions, 6695 flow [2023-09-01 02:18:23,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 75.66666666666667) internal successors, (1135), 15 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:23,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:23,376 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:23,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 02:18:23,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:23,585 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:18:23,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:23,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1578425142, now seen corresponding path program 8 times [2023-09-01 02:18:23,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:23,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701038820] [2023-09-01 02:18:23,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:23,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:24,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:24,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701038820] [2023-09-01 02:18:24,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701038820] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:18:24,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227247332] [2023-09-01 02:18:24,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:18:24,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:24,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:18:24,269 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:18:24,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 02:18:24,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:18:24,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:18:24,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjunts are in the unsatisfiable core [2023-09-01 02:18:24,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:18:24,522 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:24,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:18:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:18:25,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227247332] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:18:25,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:18:25,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 20 [2023-09-01 02:18:25,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089902001] [2023-09-01 02:18:25,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:18:25,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-09-01 02:18:25,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:25,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-09-01 02:18:25,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2023-09-01 02:18:25,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 205 [2023-09-01 02:18:25,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 473 transitions, 6695 flow. Second operand has 22 states, 22 states have (on average 68.95454545454545) internal successors, (1517), 22 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:25,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:25,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 205 [2023-09-01 02:18:25,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:26,008 INFO L130 PetriNetUnfolder]: 831/1394 cut-off events. [2023-09-01 02:18:26,008 INFO L131 PetriNetUnfolder]: For 3643/3643 co-relation queries the response was YES. [2023-09-01 02:18:26,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9523 conditions, 1394 events. 831/1394 cut-off events. For 3643/3643 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6783 event pairs, 12 based on Foata normal form. 6/1400 useless extension candidates. Maximal degree in co-relation 9489. Up to 527 conditions per place. [2023-09-01 02:18:26,015 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 0 selfloop transitions, 0 changer transitions 531/531 dead transitions. [2023-09-01 02:18:26,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 531 transitions, 8291 flow [2023-09-01 02:18:26,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 02:18:26,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 02:18:26,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1202 transitions. [2023-09-01 02:18:26,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3449067431850789 [2023-09-01 02:18:26,019 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1202 transitions. [2023-09-01 02:18:26,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1202 transitions. [2023-09-01 02:18:26,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:26,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1202 transitions. [2023-09-01 02:18:26,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 70.70588235294117) internal successors, (1202), 17 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:26,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 205.0) internal successors, (3690), 18 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:26,024 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 205.0) internal successors, (3690), 18 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:26,024 INFO L175 Difference]: Start difference. First operand has 149 places, 473 transitions, 6695 flow. Second operand 17 states and 1202 transitions. [2023-09-01 02:18:26,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 531 transitions, 8291 flow [2023-09-01 02:18:26,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 531 transitions, 8033 flow, removed 46 selfloop flow, removed 8 redundant places. [2023-09-01 02:18:26,071 INFO L231 Difference]: Finished difference. Result has 151 places, 0 transitions, 0 flow [2023-09-01 02:18:26,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=6439, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=0, PETRI_PLACES=151, PETRI_TRANSITIONS=0} [2023-09-01 02:18:26,073 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 124 predicate places. [2023-09-01 02:18:26,073 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 0 transitions, 0 flow [2023-09-01 02:18:26,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 68.95454545454545) internal successors, (1517), 22 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:26,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-09-01 02:18:26,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-09-01 02:18:26,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-09-01 02:18:26,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-09-01 02:18:26,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-09-01 02:18:26,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-09-01 02:18:26,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-09-01 02:18:26,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-09-01 02:18:26,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-09-01 02:18:26,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-09-01 02:18:26,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-09-01 02:18:26,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-09-01 02:18:26,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 02:18:26,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 02:18:26,283 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:26,285 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 02:18:26,285 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 02:18:26,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 02:18:26 BasicIcfg [2023-09-01 02:18:26,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 02:18:26,287 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 02:18:26,288 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 02:18:26,288 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 02:18:26,288 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:18:03" (3/4) ... [2023-09-01 02:18:26,290 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 02:18:26,293 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 02:18:26,293 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 02:18:26,296 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-09-01 02:18:26,296 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 02:18:26,296 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 02:18:26,296 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 02:18:26,331 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 02:18:26,331 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 02:18:26,331 INFO L158 Benchmark]: Toolchain (without parser) took 23512.94ms. Allocated memory was 60.8MB in the beginning and 507.5MB in the end (delta: 446.7MB). Free memory was 40.0MB in the beginning and 413.1MB in the end (delta: -373.1MB). Peak memory consumption was 73.3MB. Max. memory is 16.1GB. [2023-09-01 02:18:26,331 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 48.2MB. Free memory was 26.3MB in the beginning and 26.3MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 02:18:26,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.24ms. Allocated memory is still 60.8MB. Free memory was 39.8MB in the beginning and 28.8MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 02:18:26,332 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.78ms. Allocated memory is still 60.8MB. Free memory was 28.8MB in the beginning and 27.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 02:18:26,332 INFO L158 Benchmark]: Boogie Preprocessor took 41.83ms. Allocated memory is still 60.8MB. Free memory was 27.3MB in the beginning and 40.0MB in the end (delta: -12.8MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2023-09-01 02:18:26,332 INFO L158 Benchmark]: RCFGBuilder took 338.82ms. Allocated memory is still 60.8MB. Free memory was 40.0MB in the beginning and 38.6MB in the end (delta: 1.4MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2023-09-01 02:18:26,333 INFO L158 Benchmark]: TraceAbstraction took 22859.08ms. Allocated memory was 60.8MB in the beginning and 507.5MB in the end (delta: 446.7MB). Free memory was 37.9MB in the beginning and 416.1MB in the end (delta: -378.3MB). Peak memory consumption was 319.7MB. Max. memory is 16.1GB. [2023-09-01 02:18:26,333 INFO L158 Benchmark]: Witness Printer took 43.37ms. Allocated memory is still 507.5MB. Free memory was 416.1MB in the beginning and 413.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 02:18:26,336 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 48.2MB. Free memory was 26.3MB in the beginning and 26.3MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.24ms. Allocated memory is still 60.8MB. Free memory was 39.8MB in the beginning and 28.8MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.78ms. Allocated memory is still 60.8MB. Free memory was 28.8MB in the beginning and 27.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.83ms. Allocated memory is still 60.8MB. Free memory was 27.3MB in the beginning and 40.0MB in the end (delta: -12.8MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. * RCFGBuilder took 338.82ms. Allocated memory is still 60.8MB. Free memory was 40.0MB in the beginning and 38.6MB in the end (delta: 1.4MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * TraceAbstraction took 22859.08ms. Allocated memory was 60.8MB in the beginning and 507.5MB in the end (delta: 446.7MB). Free memory was 37.9MB in the beginning and 416.1MB in the end (delta: -378.3MB). Peak memory consumption was 319.7MB. Max. memory is 16.1GB. * Witness Printer took 43.37ms. Allocated memory is still 507.5MB. Free memory was 416.1MB in the beginning and 413.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 94 PlacesBefore, 27 PlacesAfterwards, 98 TransitionsBefore, 22 TransitionsAfterwards, 1476 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 6 ConcurrentYvCompositions, 9 ChoiceCompositions, 101 TotalNumberOfCompositions, 1479 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1423, independent: 1417, independent conditional: 0, independent unconditional: 1417, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 763, independent: 759, independent conditional: 0, independent unconditional: 759, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1423, independent: 658, independent conditional: 0, independent unconditional: 658, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 763, unknown conditional: 0, unknown unconditional: 763] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 101]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 85]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 124 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 22.7s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1537 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1307 mSDsluCounter, 877 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 852 mSDsCounter, 438 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3546 IncrementalHoareTripleChecker+Invalid, 3984 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 438 mSolverCounterUnsat, 25 mSDtfsCounter, 3546 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 381 GetRequests, 149 SyntacticMatches, 13 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1745 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9679occurred in iteration=12, InterpolantAutomatonStates: 174, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 375 ConstructedInterpolants, 0 QuantifiedInterpolants, 4477 SizeOfPredicates, 45 NumberOfNonLiveVariables, 1018 ConjunctsInSsa, 125 ConjunctsInUnsatCore, 31 InterpolantComputations, 7 PerfectInterpolantSequences, 19/172 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 02:18:26,352 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