./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/chl-file-item-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/chl-file-item-subst.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 be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 22:43:32,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:43:32,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:43:32,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:43:32,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:43:32,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:43:32,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:43:32,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:43:32,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:43:32,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:43:32,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:43:32,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:43:32,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:43:32,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:43:32,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:43:32,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:43:32,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:43:33,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:43:33,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:43:33,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:43:33,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:43:33,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:43:33,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:43:33,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:43:33,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:43:33,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:43:33,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:43:33,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:43:33,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:43:33,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:43:33,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:43:33,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:43:33,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:43:33,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:43:33,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:43:33,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:43:33,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:43:33,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:43:33,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:43:33,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:43:33,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:43:33,040 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 22:43:33,071 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:43:33,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:43:33,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:43:33,073 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:43:33,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:43:33,074 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:43:33,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:43:33,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:43:33,075 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:43:33,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:43:33,076 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:43:33,076 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:43:33,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:43:33,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:43:33,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:43:33,077 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:43:33,077 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:43:33,077 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:43:33,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:43:33,078 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:43:33,078 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:43:33,078 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:43:33,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:43:33,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:43:33,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:43:33,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:43:33,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:43:33,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:43:33,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 22:43:33,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 22:43:33,081 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:43:33,081 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:43:33,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:43:33,082 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:43:33,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:43:33,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:43:33,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:43:33,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:43:33,379 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:43:33,379 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:43:33,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-file-item-subst.wvr.c [2023-08-29 22:43:34,571 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:43:34,803 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:43:34,804 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-subst.wvr.c [2023-08-29 22:43:34,810 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9437e3508/cab23027d9db46bb86132bc8b781752a/FLAG4f1c88b73 [2023-08-29 22:43:34,823 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9437e3508/cab23027d9db46bb86132bc8b781752a [2023-08-29 22:43:34,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:43:34,827 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:43:34,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:43:34,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:43:34,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:43:34,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:43:34" (1/1) ... [2023-08-29 22:43:34,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff54c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:43:34, skipping insertion in model container [2023-08-29 22:43:34,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:43:34" (1/1) ... [2023-08-29 22:43:34,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:43:34,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:43:34,997 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/chl-file-item-subst.wvr.c[3015,3028] [2023-08-29 22:43:35,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:43:35,012 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 22:43:35,033 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/chl-file-item-subst.wvr.c[3015,3028] [2023-08-29 22:43:35,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:43:35,049 INFO L208 MainTranslator]: Completed translation [2023-08-29 22:43:35,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:43:35 WrapperNode [2023-08-29 22:43:35,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:43:35,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 22:43:35,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 22:43:35,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 22:43:35,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:43:35" (1/1) ... [2023-08-29 22:43:35,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:43:35" (1/1) ... [2023-08-29 22:43:35,086 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 206 [2023-08-29 22:43:35,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 22:43:35,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 22:43:35,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 22:43:35,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 22:43:35,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:43:35" (1/1) ... [2023-08-29 22:43:35,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:43:35" (1/1) ... [2023-08-29 22:43:35,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:43:35" (1/1) ... [2023-08-29 22:43:35,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:43:35" (1/1) ... [2023-08-29 22:43:35,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:43:35" (1/1) ... [2023-08-29 22:43:35,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:43:35" (1/1) ... [2023-08-29 22:43:35,108 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:43:35" (1/1) ... [2023-08-29 22:43:35,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:43:35" (1/1) ... [2023-08-29 22:43:35,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 22:43:35,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 22:43:35,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 22:43:35,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 22:43:35,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:43:35" (1/1) ... [2023-08-29 22:43:35,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:43:35,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:43:35,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 22:43:35,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 22:43:35,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 22:43:35,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 22:43:35,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 22:43:35,231 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-29 22:43:35,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-29 22:43:35,231 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-29 22:43:35,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-29 22:43:35,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 22:43:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 22:43:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 22:43:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 22:43:35,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 22:43:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 22:43:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 22:43:35,234 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 22:43:35,396 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 22:43:35,398 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 22:43:35,774 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 22:43:35,782 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 22:43:35,797 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 22:43:35,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:43:35 BoogieIcfgContainer [2023-08-29 22:43:35,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 22:43:35,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 22:43:35,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 22:43:35,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 22:43:35,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:43:34" (1/3) ... [2023-08-29 22:43:35,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6595a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:43:35, skipping insertion in model container [2023-08-29 22:43:35,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:43:35" (2/3) ... [2023-08-29 22:43:35,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6595a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:43:35, skipping insertion in model container [2023-08-29 22:43:35,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:43:35" (3/3) ... [2023-08-29 22:43:35,814 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2023-08-29 22:43:35,830 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 22:43:35,830 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-29 22:43:35,830 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 22:43:35,933 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 22:43:35,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 256 transitions, 536 flow [2023-08-29 22:43:36,066 INFO L130 PetriNetUnfolder]: 20/253 cut-off events. [2023-08-29 22:43:36,066 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 22:43:36,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 253 events. 20/253 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 572 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 168. Up to 2 conditions per place. [2023-08-29 22:43:36,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 256 transitions, 536 flow [2023-08-29 22:43:36,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 249 transitions, 516 flow [2023-08-29 22:43:36,095 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 22:43:36,107 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 249 transitions, 516 flow [2023-08-29 22:43:36,114 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 249 transitions, 516 flow [2023-08-29 22:43:36,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 249 transitions, 516 flow [2023-08-29 22:43:36,197 INFO L130 PetriNetUnfolder]: 20/249 cut-off events. [2023-08-29 22:43:36,198 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 22:43:36,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 249 events. 20/249 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 577 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 168. Up to 2 conditions per place. [2023-08-29 22:43:36,212 INFO L119 LiptonReduction]: Number of co-enabled transitions 16368 [2023-08-29 22:43:44,141 INFO L134 LiptonReduction]: Checked pairs total: 16192 [2023-08-29 22:43:44,142 INFO L136 LiptonReduction]: Total number of compositions: 324 [2023-08-29 22:43:44,153 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 22:43:44,158 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;@6e111352, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 22:43:44,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 22:43:44,160 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 22:43:44,160 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:43:44,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:43:44,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 22:43:44,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:43:44,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:43:44,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1076, now seen corresponding path program 1 times [2023-08-29 22:43:44,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:43:44,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180390458] [2023-08-29 22:43:44,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:43:44,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:43:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:43:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:43:44,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:43:44,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180390458] [2023-08-29 22:43:44,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180390458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:43:44,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:43:44,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 22:43:44,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783053932] [2023-08-29 22:43:44,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:43:44,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 22:43:44,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:43:44,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 22:43:44,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 22:43:44,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 580 [2023-08-29 22:43:44,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 241.5) internal successors, (483), 2 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:44,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:43:44,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 580 [2023-08-29 22:43:44,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:43:44,371 INFO L130 PetriNetUnfolder]: 81/164 cut-off events. [2023-08-29 22:43:44,372 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 22:43:44,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 164 events. 81/164 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 459 event pairs, 81 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 244. Up to 165 conditions per place. [2023-08-29 22:43:44,374 INFO L137 encePairwiseOnDemand]: 577/580 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-08-29 22:43:44,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2023-08-29 22:43:44,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 22:43:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 22:43:44,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 511 transitions. [2023-08-29 22:43:44,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44051724137931036 [2023-08-29 22:43:44,388 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 511 transitions. [2023-08-29 22:43:44,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 511 transitions. [2023-08-29 22:43:44,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:43:44,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 511 transitions. [2023-08-29 22:43:44,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 255.5) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:44,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 580.0) internal successors, (1740), 3 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:44,401 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 580.0) internal successors, (1740), 3 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:44,403 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 511 transitions. [2023-08-29 22:43:44,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2023-08-29 22:43:44,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-29 22:43:44,407 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-08-29 22:43:44,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-08-29 22:43:44,411 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-29 22:43:44,411 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-08-29 22:43:44,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 241.5) internal successors, (483), 2 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:44,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:43:44,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:43:44,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 22:43:44,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:43:44,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:43:44,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1059396, now seen corresponding path program 1 times [2023-08-29 22:43:44,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:43:44,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512272110] [2023-08-29 22:43:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:43:44,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:43:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:43:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:43:44,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:43:44,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512272110] [2023-08-29 22:43:44,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512272110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:43:44,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:43:44,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:43:44,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739933849] [2023-08-29 22:43:44,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:43:44,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:43:44,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:43:44,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:43:44,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:43:44,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 580 [2023-08-29 22:43:44,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:44,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:43:44,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 580 [2023-08-29 22:43:44,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:43:44,823 INFO L130 PetriNetUnfolder]: 76/153 cut-off events. [2023-08-29 22:43:44,824 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:43:44,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 153 events. 76/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 421 event pairs, 76 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2023-08-29 22:43:44,825 INFO L137 encePairwiseOnDemand]: 577/580 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-29 22:43:44,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2023-08-29 22:43:44,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:43:44,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:43:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 734 transitions. [2023-08-29 22:43:44,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4218390804597701 [2023-08-29 22:43:44,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 734 transitions. [2023-08-29 22:43:44,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 734 transitions. [2023-08-29 22:43:44,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:43:44,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 734 transitions. [2023-08-29 22:43:44,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:44,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:44,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:44,839 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 734 transitions. [2023-08-29 22:43:44,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2023-08-29 22:43:44,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:43:44,841 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2023-08-29 22:43:44,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-29 22:43:44,842 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-29 22:43:44,842 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2023-08-29 22:43:44,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:44,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:43:44,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:43:44,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 22:43:44,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:43:44,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:43:44,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1059398, now seen corresponding path program 1 times [2023-08-29 22:43:44,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:43:44,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272502342] [2023-08-29 22:43:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:43:44,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:43:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:43:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:43:44,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:43:44,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272502342] [2023-08-29 22:43:44,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272502342] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:43:44,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:43:44,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:43:44,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478677500] [2023-08-29 22:43:44,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:43:44,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:43:44,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:43:44,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:43:44,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:43:44,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 580 [2023-08-29 22:43:44,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:44,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:43:44,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 580 [2023-08-29 22:43:44,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:43:45,030 INFO L130 PetriNetUnfolder]: 71/142 cut-off events. [2023-08-29 22:43:45,030 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:43:45,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 142 events. 71/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 379 event pairs, 71 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 292. Up to 142 conditions per place. [2023-08-29 22:43:45,031 INFO L137 encePairwiseOnDemand]: 577/580 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-29 22:43:45,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2023-08-29 22:43:45,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:43:45,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:43:45,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 717 transitions. [2023-08-29 22:43:45,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41206896551724137 [2023-08-29 22:43:45,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 717 transitions. [2023-08-29 22:43:45,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 717 transitions. [2023-08-29 22:43:45,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:43:45,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 717 transitions. [2023-08-29 22:43:45,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,040 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,041 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 717 transitions. [2023-08-29 22:43:45,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2023-08-29 22:43:45,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:43:45,042 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2023-08-29 22:43:45,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-08-29 22:43:45,043 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-29 22:43:45,043 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2023-08-29 22:43:45,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:43:45,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 22:43:45,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 22:43:45,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:43:45,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:43:45,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1018103882, now seen corresponding path program 1 times [2023-08-29 22:43:45,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:43:45,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986143409] [2023-08-29 22:43:45,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:43:45,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:43:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:43:45,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:43:45,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:43:45,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986143409] [2023-08-29 22:43:45,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986143409] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:43:45,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:43:45,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:43:45,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079273441] [2023-08-29 22:43:45,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:43:45,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:43:45,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:43:45,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:43:45,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:43:45,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 580 [2023-08-29 22:43:45,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:43:45,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 580 [2023-08-29 22:43:45,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:43:45,190 INFO L130 PetriNetUnfolder]: 66/131 cut-off events. [2023-08-29 22:43:45,190 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:43:45,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 131 events. 66/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 337 event pairs, 66 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 271. Up to 131 conditions per place. [2023-08-29 22:43:45,194 INFO L137 encePairwiseOnDemand]: 577/580 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-08-29 22:43:45,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2023-08-29 22:43:45,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:43:45,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:43:45,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2023-08-29 22:43:45,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4109195402298851 [2023-08-29 22:43:45,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2023-08-29 22:43:45,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2023-08-29 22:43:45,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:43:45,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2023-08-29 22:43:45,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,211 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 715 transitions. [2023-08-29 22:43:45,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2023-08-29 22:43:45,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:43:45,213 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2023-08-29 22:43:45,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-08-29 22:43:45,214 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2023-08-29 22:43:45,215 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2023-08-29 22:43:45,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:43:45,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 22:43:45,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 22:43:45,217 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:43:45,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:43:45,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1018103883, now seen corresponding path program 1 times [2023-08-29 22:43:45,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:43:45,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898796760] [2023-08-29 22:43:45,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:43:45,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:43:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:43:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:43:45,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:43:45,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898796760] [2023-08-29 22:43:45,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898796760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:43:45,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:43:45,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:43:45,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866674358] [2023-08-29 22:43:45,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:43:45,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:43:45,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:43:45,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:43:45,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:43:45,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 580 [2023-08-29 22:43:45,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:43:45,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 580 [2023-08-29 22:43:45,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:43:45,430 INFO L130 PetriNetUnfolder]: 61/120 cut-off events. [2023-08-29 22:43:45,430 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:43:45,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 120 events. 61/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 298 event pairs, 61 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 250. Up to 120 conditions per place. [2023-08-29 22:43:45,431 INFO L137 encePairwiseOnDemand]: 577/580 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-08-29 22:43:45,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2023-08-29 22:43:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:43:45,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:43:45,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2023-08-29 22:43:45,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41839080459770117 [2023-08-29 22:43:45,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2023-08-29 22:43:45,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2023-08-29 22:43:45,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:43:45,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2023-08-29 22:43:45,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,441 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 728 transitions. [2023-08-29 22:43:45,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2023-08-29 22:43:45,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:43:45,442 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2023-08-29 22:43:45,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-29 22:43:45,445 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-29 22:43:45,446 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2023-08-29 22:43:45,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:43:45,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:43:45,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 22:43:45,448 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:43:45,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:43:45,448 INFO L85 PathProgramCache]: Analyzing trace with hash -854687497, now seen corresponding path program 1 times [2023-08-29 22:43:45,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:43:45,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600830411] [2023-08-29 22:43:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:43:45,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:43:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:43:45,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:43:45,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:43:45,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600830411] [2023-08-29 22:43:45,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600830411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:43:45,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:43:45,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:43:45,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608347113] [2023-08-29 22:43:45,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:43:45,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:43:45,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:43:45,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:43:45,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:43:45,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 580 [2023-08-29 22:43:45,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:43:45,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 580 [2023-08-29 22:43:45,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:43:45,576 INFO L130 PetriNetUnfolder]: 49/100 cut-off events. [2023-08-29 22:43:45,576 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:43:45,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 100 events. 49/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 222 event pairs, 49 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 211. Up to 100 conditions per place. [2023-08-29 22:43:45,577 INFO L137 encePairwiseOnDemand]: 578/580 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-29 22:43:45,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2023-08-29 22:43:45,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:43:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:43:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2023-08-29 22:43:45,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103448275862069 [2023-08-29 22:43:45,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2023-08-29 22:43:45,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2023-08-29 22:43:45,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:43:45,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2023-08-29 22:43:45,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,586 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 714 transitions. [2023-08-29 22:43:45,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2023-08-29 22:43:45,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:43:45,588 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2023-08-29 22:43:45,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, 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=46, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-08-29 22:43:45,588 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-29 22:43:45,589 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2023-08-29 22:43:45,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:43:45,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:43:45,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 22:43:45,590 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:43:45,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:43:45,590 INFO L85 PathProgramCache]: Analyzing trace with hash -854687498, now seen corresponding path program 1 times [2023-08-29 22:43:45,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:43:45,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878033756] [2023-08-29 22:43:45,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:43:45,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:43:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:43:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:43:45,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:43:45,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878033756] [2023-08-29 22:43:45,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878033756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:43:45,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:43:45,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 22:43:45,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79207926] [2023-08-29 22:43:45,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:43:45,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:43:45,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:43:45,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:43:45,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:43:45,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 580 [2023-08-29 22:43:45,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 224.4) internal successors, (1122), 5 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:43:45,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 580 [2023-08-29 22:43:45,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:43:45,816 INFO L130 PetriNetUnfolder]: 37/80 cut-off events. [2023-08-29 22:43:45,816 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:43:45,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 80 events. 37/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 80 conditions per place. [2023-08-29 22:43:45,817 INFO L137 encePairwiseOnDemand]: 578/580 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-29 22:43:45,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2023-08-29 22:43:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:43:45,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:43:45,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 686 transitions. [2023-08-29 22:43:45,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39425287356321836 [2023-08-29 22:43:45,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 686 transitions. [2023-08-29 22:43:45,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 686 transitions. [2023-08-29 22:43:45,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:43:45,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 686 transitions. [2023-08-29 22:43:45,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,825 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,825 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 686 transitions. [2023-08-29 22:43:45,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2023-08-29 22:43:45,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:43:45,826 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2023-08-29 22:43:45,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2023-08-29 22:43:45,827 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-29 22:43:45,827 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2023-08-29 22:43:45,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 224.4) internal successors, (1122), 5 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:45,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:43:45,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:43:45,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 22:43:45,828 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:43:45,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:43:45,829 INFO L85 PathProgramCache]: Analyzing trace with hash -68553366, now seen corresponding path program 1 times [2023-08-29 22:43:45,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:43:45,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516476515] [2023-08-29 22:43:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:43:45,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:43:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:43:48,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:43:48,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:43:48,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516476515] [2023-08-29 22:43:48,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516476515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:43:48,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:43:48,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:43:48,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993807819] [2023-08-29 22:43:48,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:43:48,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:43:48,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:43:48,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:43:48,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:43:48,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 580 [2023-08-29 22:43:48,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:48,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:43:48,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 580 [2023-08-29 22:43:48,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:43:49,059 INFO L130 PetriNetUnfolder]: 40/106 cut-off events. [2023-08-29 22:43:49,060 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 22:43:49,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 40/106 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 328 event pairs, 6 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 226. Up to 48 conditions per place. [2023-08-29 22:43:49,060 INFO L137 encePairwiseOnDemand]: 575/580 looper letters, 30 selfloop transitions, 6 changer transitions 9/45 dead transitions. [2023-08-29 22:43:49,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 203 flow [2023-08-29 22:43:49,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:43:49,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:43:49,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1348 transitions. [2023-08-29 22:43:49,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3873563218390805 [2023-08-29 22:43:49,065 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1348 transitions. [2023-08-29 22:43:49,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1348 transitions. [2023-08-29 22:43:49,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:43:49,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1348 transitions. [2023-08-29 22:43:49,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 224.66666666666666) internal successors, (1348), 6 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:49,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 580.0) internal successors, (4060), 7 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:49,073 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 580.0) internal successors, (4060), 7 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:49,073 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 6 states and 1348 transitions. [2023-08-29 22:43:49,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 203 flow [2023-08-29 22:43:49,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:43:49,075 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 77 flow [2023-08-29 22:43:49,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2023-08-29 22:43:49,076 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -4 predicate places. [2023-08-29 22:43:49,076 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 77 flow [2023-08-29 22:43:49,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:49,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:43:49,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:43:49,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 22:43:49,077 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:43:49,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:43:49,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1776343656, now seen corresponding path program 2 times [2023-08-29 22:43:49,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:43:49,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057980344] [2023-08-29 22:43:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:43:49,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:43:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:43:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:43:51,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:43:51,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057980344] [2023-08-29 22:43:51,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057980344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:43:51,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:43:51,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:43:51,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004786355] [2023-08-29 22:43:51,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:43:51,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:43:51,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:43:51,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:43:51,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:43:51,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 580 [2023-08-29 22:43:51,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:51,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:43:51,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 580 [2023-08-29 22:43:51,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:43:52,067 INFO L130 PetriNetUnfolder]: 36/114 cut-off events. [2023-08-29 22:43:52,067 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-08-29 22:43:52,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 114 events. 36/114 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 407 event pairs, 4 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 318. Up to 62 conditions per place. [2023-08-29 22:43:52,068 INFO L137 encePairwiseOnDemand]: 575/580 looper letters, 28 selfloop transitions, 5 changer transitions 10/43 dead transitions. [2023-08-29 22:43:52,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 227 flow [2023-08-29 22:43:52,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:43:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:43:52,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1346 transitions. [2023-08-29 22:43:52,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3867816091954023 [2023-08-29 22:43:52,072 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1346 transitions. [2023-08-29 22:43:52,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1346 transitions. [2023-08-29 22:43:52,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:43:52,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1346 transitions. [2023-08-29 22:43:52,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 224.33333333333334) internal successors, (1346), 6 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:52,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 580.0) internal successors, (4060), 7 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:52,081 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 580.0) internal successors, (4060), 7 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:52,081 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 77 flow. Second operand 6 states and 1346 transitions. [2023-08-29 22:43:52,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 227 flow [2023-08-29 22:43:52,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 223 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-29 22:43:52,083 INFO L231 Difference]: Finished difference. Result has 41 places, 20 transitions, 95 flow [2023-08-29 22:43:52,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=95, PETRI_PLACES=41, PETRI_TRANSITIONS=20} [2023-08-29 22:43:52,084 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-29 22:43:52,084 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 95 flow [2023-08-29 22:43:52,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:52,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:43:52,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:43:52,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 22:43:52,085 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:43:52,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:43:52,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1545511036, now seen corresponding path program 3 times [2023-08-29 22:43:52,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:43:52,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491019908] [2023-08-29 22:43:52,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:43:52,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:43:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:43:53,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:43:53,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:43:53,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491019908] [2023-08-29 22:43:53,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491019908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:43:53,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:43:53,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:43:53,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036190151] [2023-08-29 22:43:53,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:43:53,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:43:53,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:43:53,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:43:53,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:43:54,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 580 [2023-08-29 22:43:54,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:54,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:43:54,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 580 [2023-08-29 22:43:54,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:43:54,866 INFO L130 PetriNetUnfolder]: 20/70 cut-off events. [2023-08-29 22:43:54,866 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2023-08-29 22:43:54,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 70 events. 20/70 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 187 event pairs, 0 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 229. Up to 23 conditions per place. [2023-08-29 22:43:54,867 INFO L137 encePairwiseOnDemand]: 575/580 looper letters, 27 selfloop transitions, 6 changer transitions 9/42 dead transitions. [2023-08-29 22:43:54,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 239 flow [2023-08-29 22:43:54,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:43:54,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:43:54,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1344 transitions. [2023-08-29 22:43:54,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38620689655172413 [2023-08-29 22:43:54,872 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1344 transitions. [2023-08-29 22:43:54,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1344 transitions. [2023-08-29 22:43:54,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:43:54,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1344 transitions. [2023-08-29 22:43:54,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:54,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 580.0) internal successors, (4060), 7 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:54,884 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 580.0) internal successors, (4060), 7 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:54,885 INFO L175 Difference]: Start difference. First operand has 41 places, 20 transitions, 95 flow. Second operand 6 states and 1344 transitions. [2023-08-29 22:43:54,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 239 flow [2023-08-29 22:43:54,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 217 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-29 22:43:54,888 INFO L231 Difference]: Finished difference. Result has 42 places, 20 transitions, 97 flow [2023-08-29 22:43:54,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=97, PETRI_PLACES=42, PETRI_TRANSITIONS=20} [2023-08-29 22:43:54,889 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-29 22:43:54,889 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 20 transitions, 97 flow [2023-08-29 22:43:54,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:54,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:43:54,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:43:54,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 22:43:54,891 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:43:54,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:43:54,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1383841218, now seen corresponding path program 4 times [2023-08-29 22:43:54,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:43:54,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406837479] [2023-08-29 22:43:54,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:43:54,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:43:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:43:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:43:56,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:43:56,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406837479] [2023-08-29 22:43:56,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406837479] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:43:56,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:43:56,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:43:56,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44636112] [2023-08-29 22:43:56,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:43:56,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:43:56,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:43:56,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:43:56,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:43:57,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 580 [2023-08-29 22:43:57,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 20 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:57,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:43:57,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 580 [2023-08-29 22:43:57,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:43:57,940 INFO L130 PetriNetUnfolder]: 15/67 cut-off events. [2023-08-29 22:43:57,941 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-08-29 22:43:57,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 67 events. 15/67 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 181 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 221. Up to 41 conditions per place. [2023-08-29 22:43:57,941 INFO L137 encePairwiseOnDemand]: 575/580 looper letters, 18 selfloop transitions, 4 changer transitions 12/34 dead transitions. [2023-08-29 22:43:57,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 205 flow [2023-08-29 22:43:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:43:57,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:43:57,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1336 transitions. [2023-08-29 22:43:57,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3839080459770115 [2023-08-29 22:43:57,946 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1336 transitions. [2023-08-29 22:43:57,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1336 transitions. [2023-08-29 22:43:57,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:43:57,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1336 transitions. [2023-08-29 22:43:57,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.66666666666666) internal successors, (1336), 6 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:57,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 580.0) internal successors, (4060), 7 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:57,955 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 580.0) internal successors, (4060), 7 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:57,955 INFO L175 Difference]: Start difference. First operand has 42 places, 20 transitions, 97 flow. Second operand 6 states and 1336 transitions. [2023-08-29 22:43:57,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 205 flow [2023-08-29 22:43:57,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 22:43:57,957 INFO L231 Difference]: Finished difference. Result has 45 places, 18 transitions, 91 flow [2023-08-29 22:43:57,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=45, PETRI_TRANSITIONS=18} [2023-08-29 22:43:57,958 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-08-29 22:43:57,958 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 18 transitions, 91 flow [2023-08-29 22:43:57,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:43:57,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:43:57,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:43:57,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 22:43:57,959 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:43:57,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:43:57,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1421721082, now seen corresponding path program 5 times [2023-08-29 22:43:57,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:43:57,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303707907] [2023-08-29 22:43:57,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:43:57,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:43:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:43:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:43:59,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:43:59,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303707907] [2023-08-29 22:43:59,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303707907] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:43:59,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:43:59,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:43:59,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462065022] [2023-08-29 22:43:59,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:43:59,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:43:59,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:43:59,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:43:59,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:44:00,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 580 [2023-08-29 22:44:00,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 18 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:00,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:00,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 580 [2023-08-29 22:44:00,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:00,582 INFO L130 PetriNetUnfolder]: 7/37 cut-off events. [2023-08-29 22:44:00,582 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-29 22:44:00,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 37 events. 7/37 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 128. Up to 14 conditions per place. [2023-08-29 22:44:00,583 INFO L137 encePairwiseOnDemand]: 575/580 looper letters, 17 selfloop transitions, 3 changer transitions 8/28 dead transitions. [2023-08-29 22:44:00,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 28 transitions, 171 flow [2023-08-29 22:44:00,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:44:00,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:44:00,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1330 transitions. [2023-08-29 22:44:00,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.382183908045977 [2023-08-29 22:44:00,588 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1330 transitions. [2023-08-29 22:44:00,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1330 transitions. [2023-08-29 22:44:00,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:00,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1330 transitions. [2023-08-29 22:44:00,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 221.66666666666666) internal successors, (1330), 6 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:00,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 580.0) internal successors, (4060), 7 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:00,596 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 580.0) internal successors, (4060), 7 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:00,596 INFO L175 Difference]: Start difference. First operand has 45 places, 18 transitions, 91 flow. Second operand 6 states and 1330 transitions. [2023-08-29 22:44:00,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 28 transitions, 171 flow [2023-08-29 22:44:00,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 28 transitions, 152 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-29 22:44:00,598 INFO L231 Difference]: Finished difference. Result has 41 places, 16 transitions, 65 flow [2023-08-29 22:44:00,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=65, PETRI_PLACES=41, PETRI_TRANSITIONS=16} [2023-08-29 22:44:00,598 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-29 22:44:00,598 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 16 transitions, 65 flow [2023-08-29 22:44:00,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:00,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:00,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:44:00,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 22:44:00,599 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:00,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:00,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1773921142, now seen corresponding path program 6 times [2023-08-29 22:44:00,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:00,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359497344] [2023-08-29 22:44:00,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:00,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:44:02,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:02,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359497344] [2023-08-29 22:44:02,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359497344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:02,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:02,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:44:02,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793084752] [2023-08-29 22:44:02,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:02,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:44:02,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:02,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:44:02,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:44:02,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 580 [2023-08-29 22:44:02,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 16 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:02,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:02,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 580 [2023-08-29 22:44:02,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:03,145 INFO L130 PetriNetUnfolder]: 5/25 cut-off events. [2023-08-29 22:44:03,145 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-29 22:44:03,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 25 events. 5/25 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 86. Up to 10 conditions per place. [2023-08-29 22:44:03,145 INFO L137 encePairwiseOnDemand]: 575/580 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-29 22:44:03,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 20 transitions, 112 flow [2023-08-29 22:44:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:44:03,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:44:03,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1323 transitions. [2023-08-29 22:44:03,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38017241379310346 [2023-08-29 22:44:03,149 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1323 transitions. [2023-08-29 22:44:03,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1323 transitions. [2023-08-29 22:44:03,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:03,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1323 transitions. [2023-08-29 22:44:03,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 220.5) internal successors, (1323), 6 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:03,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 580.0) internal successors, (4060), 7 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:03,157 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 580.0) internal successors, (4060), 7 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:03,157 INFO L175 Difference]: Start difference. First operand has 41 places, 16 transitions, 65 flow. Second operand 6 states and 1323 transitions. [2023-08-29 22:44:03,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 20 transitions, 112 flow [2023-08-29 22:44:03,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 20 transitions, 99 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-29 22:44:03,159 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-29 22:44:03,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-08-29 22:44:03,159 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-08-29 22:44:03,159 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-29 22:44:03,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:03,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-08-29 22:44:03,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-08-29 22:44:03,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-08-29 22:44:03,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-08-29 22:44:03,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-08-29 22:44:03,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-08-29 22:44:03,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-08-29 22:44:03,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-08-29 22:44:03,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-08-29 22:44:03,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-08-29 22:44:03,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-08-29 22:44:03,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-08-29 22:44:03,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-08-29 22:44:03,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-08-29 22:44:03,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-08-29 22:44:03,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-08-29 22:44:03,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-08-29 22:44:03,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 22:44:03,166 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:44:03,169 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 22:44:03,169 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 22:44:03,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:44:03 BasicIcfg [2023-08-29 22:44:03,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 22:44:03,173 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 22:44:03,173 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 22:44:03,173 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 22:44:03,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:43:35" (3/4) ... [2023-08-29 22:44:03,175 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 22:44:03,181 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-29 22:44:03,181 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-29 22:44:03,181 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-29 22:44:03,186 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-08-29 22:44:03,186 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 22:44:03,186 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 22:44:03,186 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 22:44:03,216 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 22:44:03,216 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 22:44:03,217 INFO L158 Benchmark]: Toolchain (without parser) took 28390.12ms. Allocated memory was 88.1MB in the beginning and 450.9MB in the end (delta: 362.8MB). Free memory was 65.3MB in the beginning and 185.1MB in the end (delta: -119.7MB). Peak memory consumption was 243.8MB. Max. memory is 16.1GB. [2023-08-29 22:44:03,217 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:44:03,217 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.45ms. Allocated memory is still 88.1MB. Free memory was 65.1MB in the beginning and 53.6MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-29 22:44:03,218 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.18ms. Allocated memory is still 88.1MB. Free memory was 53.6MB in the beginning and 51.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:44:03,218 INFO L158 Benchmark]: Boogie Preprocessor took 25.30ms. Allocated memory is still 88.1MB. Free memory was 51.4MB in the beginning and 49.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:44:03,218 INFO L158 Benchmark]: RCFGBuilder took 685.89ms. Allocated memory is still 88.1MB. Free memory was 49.7MB in the beginning and 49.0MB in the end (delta: 722.0kB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2023-08-29 22:44:03,219 INFO L158 Benchmark]: TraceAbstraction took 27371.28ms. Allocated memory was 88.1MB in the beginning and 450.9MB in the end (delta: 362.8MB). Free memory was 48.5MB in the beginning and 188.2MB in the end (delta: -139.7MB). Peak memory consumption was 225.1MB. Max. memory is 16.1GB. [2023-08-29 22:44:03,219 INFO L158 Benchmark]: Witness Printer took 43.81ms. Allocated memory is still 450.9MB. Free memory was 188.2MB in the beginning and 185.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:44:03,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.45ms. Allocated memory is still 88.1MB. Free memory was 65.1MB in the beginning and 53.6MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.18ms. Allocated memory is still 88.1MB. Free memory was 53.6MB in the beginning and 51.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.30ms. Allocated memory is still 88.1MB. Free memory was 51.4MB in the beginning and 49.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 685.89ms. Allocated memory is still 88.1MB. Free memory was 49.7MB in the beginning and 49.0MB in the end (delta: 722.0kB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * TraceAbstraction took 27371.28ms. Allocated memory was 88.1MB in the beginning and 450.9MB in the end (delta: 362.8MB). Free memory was 48.5MB in the beginning and 188.2MB in the end (delta: -139.7MB). Peak memory consumption was 225.1MB. Max. memory is 16.1GB. * Witness Printer took 43.81ms. Allocated memory is still 450.9MB. Free memory was 188.2MB in the beginning and 185.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.0s, 239 PlacesBefore, 39 PlacesAfterwards, 249 TransitionsBefore, 29 TransitionsAfterwards, 16368 CoEnabledTransitionPairs, 8 FixpointIterations, 91 TrivialSequentialCompositions, 144 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 63 ConcurrentYvCompositions, 20 ChoiceCompositions, 324 TotalNumberOfCompositions, 16192 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16192, independent: 16192, independent conditional: 0, independent unconditional: 16192, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10179, independent: 10179, independent conditional: 0, independent unconditional: 10179, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16192, independent: 6013, independent conditional: 0, independent unconditional: 6013, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 10179, unknown conditional: 0, unknown unconditional: 10179] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, 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: -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: 84]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 61]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 357 locations, 17 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: 27.2s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1960 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1147 mSDsluCounter, 916 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 610 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2504 IncrementalHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 306 mSDtfsCounter, 2504 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=10, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.4s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 5937 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 22:44:03,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE