./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/chl-simpl-str-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-simpl-str-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 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 --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 23:01:29,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 23:01:29,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 23:01:29,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 23:01:29,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 23:01:29,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 23:01:29,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 23:01:29,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 23:01:29,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 23:01:29,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 23:01:29,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 23:01:29,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 23:01:29,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 23:01:29,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 23:01:29,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 23:01:29,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 23:01:29,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 23:01:29,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 23:01:29,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 23:01:29,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 23:01:29,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 23:01:29,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 23:01:29,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 23:01:29,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 23:01:29,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 23:01:29,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 23:01:29,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 23:01:29,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 23:01:29,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 23:01:29,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 23:01:29,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 23:01:29,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 23:01:29,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 23:01:29,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 23:01:29,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 23:01:29,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 23:01:29,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 23:01:29,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 23:01:29,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 23:01:29,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 23:01:29,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 23:01:29,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 23:01:29,812 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 23:01:29,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 23:01:29,813 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 23:01:29,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 23:01:29,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 23:01:29,814 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 23:01:29,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 23:01:29,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 23:01:29,816 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 23:01:29,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 23:01:29,817 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 23:01:29,817 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 23:01:29,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 23:01:29,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 23:01:29,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 23:01:29,818 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 23:01:29,818 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 23:01:29,818 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 23:01:29,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 23:01:29,818 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 23:01:29,818 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 23:01:29,819 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 23:01:29,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 23:01:29,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 23:01:29,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 23:01:29,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:01:29,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 23:01:29,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 23:01:29,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 23:01:29,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 23:01:29,821 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 23:01:29,821 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 23:01:29,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 23:01:29,821 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 23:01:29,821 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 23:01:30,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 23:01:30,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 23:01:30,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 23:01:30,152 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 23:01:30,152 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 23:01:30,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c [2023-08-29 23:01:31,399 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 23:01:31,581 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 23:01:31,582 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c [2023-08-29 23:01:31,587 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70653426c/a6256f4ac08247f199fc095d1d4d2704/FLAG9ec0b916e [2023-08-29 23:01:31,991 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70653426c/a6256f4ac08247f199fc095d1d4d2704 [2023-08-29 23:01:31,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 23:01:31,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 23:01:31,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 23:01:31,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 23:01:31,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 23:01:31,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:01:31" (1/1) ... [2023-08-29 23:01:31,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d6b8921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:31, skipping insertion in model container [2023-08-29 23:01:31,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:01:31" (1/1) ... [2023-08-29 23:01:32,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 23:01:32,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 23:01:32,142 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-simpl-str-subst.wvr.c[2575,2588] [2023-08-29 23:01:32,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:01:32,159 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 23:01:32,176 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-simpl-str-subst.wvr.c[2575,2588] [2023-08-29 23:01:32,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:01:32,191 INFO L208 MainTranslator]: Completed translation [2023-08-29 23:01:32,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:32 WrapperNode [2023-08-29 23:01:32,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 23:01:32,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 23:01:32,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 23:01:32,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 23:01:32,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:32" (1/1) ... [2023-08-29 23:01:32,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:32" (1/1) ... [2023-08-29 23:01:32,255 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 173 [2023-08-29 23:01:32,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 23:01:32,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 23:01:32,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 23:01:32,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 23:01:32,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:32" (1/1) ... [2023-08-29 23:01:32,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:32" (1/1) ... [2023-08-29 23:01:32,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:32" (1/1) ... [2023-08-29 23:01:32,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:32" (1/1) ... [2023-08-29 23:01:32,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:32" (1/1) ... [2023-08-29 23:01:32,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:32" (1/1) ... [2023-08-29 23:01:32,297 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:32" (1/1) ... [2023-08-29 23:01:32,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:32" (1/1) ... [2023-08-29 23:01:32,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 23:01:32,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 23:01:32,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 23:01:32,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 23:01:32,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:32" (1/1) ... [2023-08-29 23:01:32,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:01:32,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:01:32,344 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 23:01:32,355 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 23:01:32,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 23:01:32,429 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 23:01:32,429 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 23:01:32,429 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-29 23:01:32,429 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-29 23:01:32,429 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-29 23:01:32,430 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-29 23:01:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 23:01:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 23:01:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 23:01:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 23:01:32,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 23:01:32,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 23:01:32,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 23:01:32,432 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 23:01:32,554 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 23:01:32,556 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 23:01:32,846 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 23:01:32,855 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 23:01:32,855 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 23:01:32,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:01:32 BoogieIcfgContainer [2023-08-29 23:01:32,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 23:01:32,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 23:01:32,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 23:01:32,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 23:01:32,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:01:31" (1/3) ... [2023-08-29 23:01:32,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ccad7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:01:32, skipping insertion in model container [2023-08-29 23:01:32,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:32" (2/3) ... [2023-08-29 23:01:32,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ccad7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:01:32, skipping insertion in model container [2023-08-29 23:01:32,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:01:32" (3/3) ... [2023-08-29 23:01:32,865 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2023-08-29 23:01:32,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 23:01:32,878 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-29 23:01:32,879 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 23:01:33,025 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 23:01:33,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 217 transitions, 458 flow [2023-08-29 23:01:33,161 INFO L130 PetriNetUnfolder]: 14/214 cut-off events. [2023-08-29 23:01:33,162 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:01:33,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 214 events. 14/214 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 421 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2023-08-29 23:01:33,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 217 transitions, 458 flow [2023-08-29 23:01:33,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 210 transitions, 438 flow [2023-08-29 23:01:33,187 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 23:01:33,205 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 210 transitions, 438 flow [2023-08-29 23:01:33,208 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 210 transitions, 438 flow [2023-08-29 23:01:33,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 210 transitions, 438 flow [2023-08-29 23:01:33,284 INFO L130 PetriNetUnfolder]: 14/210 cut-off events. [2023-08-29 23:01:33,284 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:01:33,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 210 events. 14/210 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 420 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2023-08-29 23:01:33,294 INFO L119 LiptonReduction]: Number of co-enabled transitions 10608 [2023-08-29 23:01:39,818 INFO L134 LiptonReduction]: Checked pairs total: 10184 [2023-08-29 23:01:39,818 INFO L136 LiptonReduction]: Total number of compositions: 244 [2023-08-29 23:01:39,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 23:01:39,836 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;@22b00804, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 23:01:39,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 23:01:39,840 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 23:01:39,841 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:01:39,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:01:39,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 23:01:39,842 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 23:01:39,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:01:39,849 INFO L85 PathProgramCache]: Analyzing trace with hash 870, now seen corresponding path program 1 times [2023-08-29 23:01:39,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:01:39,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666379747] [2023-08-29 23:01:39,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:01:39,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:01:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:01:39,926 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 23:01:39,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:01:39,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666379747] [2023-08-29 23:01:39,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666379747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:01:39,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:01:39,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 23:01:39,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543320542] [2023-08-29 23:01:39,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:01:39,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 23:01:39,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:01:40,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 23:01:40,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 23:01:40,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 461 [2023-08-29 23:01:40,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 202.5) internal successors, (405), 2 states have internal predecessors, (405), 0 states have call successors, (0), 0 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 23:01:40,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:01:40,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 461 [2023-08-29 23:01:40,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:01:40,114 INFO L130 PetriNetUnfolder]: 81/164 cut-off events. [2023-08-29 23:01:40,114 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 23:01:40,115 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 462 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 23:01:40,118 INFO L137 encePairwiseOnDemand]: 458/461 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-08-29 23:01:40,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2023-08-29 23:01:40,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 23:01:40,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 23:01:40,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 433 transitions. [2023-08-29 23:01:40,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46963123644251625 [2023-08-29 23:01:40,138 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 433 transitions. [2023-08-29 23:01:40,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 433 transitions. [2023-08-29 23:01:40,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:01:40,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 433 transitions. [2023-08-29 23:01:40,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 216.5) internal successors, (433), 2 states have internal predecessors, (433), 0 states have call successors, (0), 0 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 23:01:40,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 461.0) internal successors, (1383), 3 states have internal predecessors, (1383), 0 states have call successors, (0), 0 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 23:01:40,156 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 461.0) internal successors, (1383), 3 states have internal predecessors, (1383), 0 states have call successors, (0), 0 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 23:01:40,157 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 433 transitions. [2023-08-29 23:01:40,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2023-08-29 23:01:40,160 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 23:01:40,164 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-08-29 23:01:40,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, 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 23:01:40,169 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-29 23:01:40,169 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-08-29 23:01:40,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 202.5) internal successors, (405), 2 states have internal predecessors, (405), 0 states have call successors, (0), 0 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 23:01:40,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:01:40,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 23:01:40,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 23:01:40,171 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 23:01:40,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:01:40,172 INFO L85 PathProgramCache]: Analyzing trace with hash 857192, now seen corresponding path program 1 times [2023-08-29 23:01:40,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:01:40,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168263247] [2023-08-29 23:01:40,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:01:40,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:01:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:01:40,447 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 23:01:40,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:01:40,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168263247] [2023-08-29 23:01:40,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168263247] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:01:40,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:01:40,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:01:40,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111976100] [2023-08-29 23:01:40,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:01:40,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:01:40,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:01:40,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:01:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:01:40,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 461 [2023-08-29 23:01:40,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 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 23:01:40,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:01:40,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 461 [2023-08-29 23:01:40,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:01:40,560 INFO L130 PetriNetUnfolder]: 76/153 cut-off events. [2023-08-29 23:01:40,560 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:01:40,561 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 23:01:40,562 INFO L137 encePairwiseOnDemand]: 458/461 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-29 23:01:40,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2023-08-29 23:01:40,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:01:40,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:01:40,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 617 transitions. [2023-08-29 23:01:40,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44613159797541574 [2023-08-29 23:01:40,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 617 transitions. [2023-08-29 23:01:40,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 617 transitions. [2023-08-29 23:01:40,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:01:40,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 617 transitions. [2023-08-29 23:01:40,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 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 23:01:40,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 0 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 23:01:40,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 0 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 23:01:40,571 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 617 transitions. [2023-08-29 23:01:40,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2023-08-29 23:01:40,571 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 23:01:40,572 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2023-08-29 23:01:40,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, 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 23:01:40,573 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-29 23:01:40,573 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2023-08-29 23:01:40,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 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 23:01:40,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:01:40,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 23:01:40,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 23:01:40,574 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 23:01:40,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:01:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash 857191, now seen corresponding path program 1 times [2023-08-29 23:01:40,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:01:40,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031074909] [2023-08-29 23:01:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:01:40,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:01:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:01:40,637 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 23:01:40,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:01:40,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031074909] [2023-08-29 23:01:40,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031074909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:01:40,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:01:40,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:01:40,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700720335] [2023-08-29 23:01:40,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:01:40,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:01:40,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:01:40,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:01:40,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:01:40,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 461 [2023-08-29 23:01:40,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 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 23:01:40,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:01:40,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 461 [2023-08-29 23:01:40,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:01:40,743 INFO L130 PetriNetUnfolder]: 71/142 cut-off events. [2023-08-29 23:01:40,745 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:01:40,745 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 382 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 23:01:40,746 INFO L137 encePairwiseOnDemand]: 458/461 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-29 23:01:40,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2023-08-29 23:01:40,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:01:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:01:40,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 600 transitions. [2023-08-29 23:01:40,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43383947939262474 [2023-08-29 23:01:40,748 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 600 transitions. [2023-08-29 23:01:40,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 600 transitions. [2023-08-29 23:01:40,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:01:40,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 600 transitions. [2023-08-29 23:01:40,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 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 23:01:40,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 0 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 23:01:40,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 0 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 23:01:40,754 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 600 transitions. [2023-08-29 23:01:40,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2023-08-29 23:01:40,755 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 23:01:40,756 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2023-08-29 23:01:40,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, 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 23:01:40,757 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-29 23:01:40,760 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2023-08-29 23:01:40,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 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 23:01:40,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:01:40,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 23:01:40,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 23:01:40,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:01:40,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:01:40,763 INFO L85 PathProgramCache]: Analyzing trace with hash 823778723, now seen corresponding path program 1 times [2023-08-29 23:01:40,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:01:40,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492649664] [2023-08-29 23:01:40,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:01:40,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:01:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:01:40,862 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 23:01:40,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:01:40,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492649664] [2023-08-29 23:01:40,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492649664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:01:40,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:01:40,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:01:40,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980026183] [2023-08-29 23:01:40,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:01:40,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:01:40,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:01:40,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:01:40,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:01:40,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 461 [2023-08-29 23:01:40,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 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 23:01:40,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:01:40,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 461 [2023-08-29 23:01:40,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:01:40,950 INFO L130 PetriNetUnfolder]: 66/131 cut-off events. [2023-08-29 23:01:40,950 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:01:40,950 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 342 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 23:01:40,951 INFO L137 encePairwiseOnDemand]: 458/461 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-08-29 23:01:40,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2023-08-29 23:01:40,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:01:40,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:01:40,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-08-29 23:01:40,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4432393347794649 [2023-08-29 23:01:40,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-08-29 23:01:40,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-08-29 23:01:40,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:01:40,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-08-29 23:01:40,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:01:40,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 0 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 23:01:40,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 0 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 23:01:40,968 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 613 transitions. [2023-08-29 23:01:40,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2023-08-29 23:01:40,969 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 23:01:40,969 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2023-08-29 23:01:40,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, 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 23:01:40,971 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2023-08-29 23:01:40,971 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2023-08-29 23:01:40,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 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 23:01:40,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:01:40,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 23:01:40,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 23:01:40,973 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:01:40,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:01:40,973 INFO L85 PathProgramCache]: Analyzing trace with hash 823778722, now seen corresponding path program 1 times [2023-08-29 23:01:40,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:01:40,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803126062] [2023-08-29 23:01:40,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:01:40,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:01:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:01:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:01:41,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:01:41,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803126062] [2023-08-29 23:01:41,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803126062] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:01:41,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:01:41,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:01:41,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221634736] [2023-08-29 23:01:41,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:01:41,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:01:41,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:01:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:01:41,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:01:41,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 461 [2023-08-29 23:01:41,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 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 23:01:41,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:01:41,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 461 [2023-08-29 23:01:41,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:01:41,121 INFO L130 PetriNetUnfolder]: 61/120 cut-off events. [2023-08-29 23:01:41,121 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:01:41,121 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 23:01:41,122 INFO L137 encePairwiseOnDemand]: 458/461 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-08-29 23:01:41,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2023-08-29 23:01:41,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:01:41,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:01:41,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 596 transitions. [2023-08-29 23:01:41,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4309472161966739 [2023-08-29 23:01:41,124 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 596 transitions. [2023-08-29 23:01:41,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 596 transitions. [2023-08-29 23:01:41,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:01:41,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 596 transitions. [2023-08-29 23:01:41,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 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 23:01:41,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 0 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 23:01:41,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 0 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 23:01:41,129 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 596 transitions. [2023-08-29 23:01:41,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2023-08-29 23:01:41,130 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 23:01:41,130 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2023-08-29 23:01:41,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, 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 23:01:41,131 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-29 23:01:41,131 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2023-08-29 23:01:41,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 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 23:01:41,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:01:41,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:01:41,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 23:01:41,132 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:01:41,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:01:41,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1377390520, now seen corresponding path program 1 times [2023-08-29 23:01:41,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:01:41,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901800272] [2023-08-29 23:01:41,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:01:41,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:01:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:01:41,208 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 23:01:41,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:01:41,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901800272] [2023-08-29 23:01:41,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901800272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:01:41,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:01:41,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 23:01:41,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255901066] [2023-08-29 23:01:41,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:01:41,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:01:41,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:01:41,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:01:41,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:01:41,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 461 [2023-08-29 23:01:41,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 5 states, 5 states have (on average 185.4) internal successors, (927), 5 states have internal predecessors, (927), 0 states have call successors, (0), 0 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 23:01:41,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:01:41,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 461 [2023-08-29 23:01:41,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:01:41,362 INFO L130 PetriNetUnfolder]: 49/100 cut-off events. [2023-08-29 23:01:41,362 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:01:41,363 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 23:01:41,363 INFO L137 encePairwiseOnDemand]: 459/461 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-29 23:01:41,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2023-08-29 23:01:41,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:01:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:01:41,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 570 transitions. [2023-08-29 23:01:41,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121475054229935 [2023-08-29 23:01:41,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 570 transitions. [2023-08-29 23:01:41,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 570 transitions. [2023-08-29 23:01:41,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:01:41,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 570 transitions. [2023-08-29 23:01:41,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 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 23:01:41,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 0 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 23:01:41,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 0 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 23:01:41,371 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 570 transitions. [2023-08-29 23:01:41,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2023-08-29 23:01:41,371 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 23:01:41,372 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2023-08-29 23:01:41,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, 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 23:01:41,372 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-29 23:01:41,373 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2023-08-29 23:01:41,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 185.4) internal successors, (927), 5 states have internal predecessors, (927), 0 states have call successors, (0), 0 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 23:01:41,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:01:41,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:01:41,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 23:01:41,374 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:01:41,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:01:41,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1377390521, now seen corresponding path program 1 times [2023-08-29 23:01:41,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:01:41,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037446156] [2023-08-29 23:01:41,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:01:41,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:01:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:01:41,460 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 23:01:41,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:01:41,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037446156] [2023-08-29 23:01:41,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037446156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:01:41,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:01:41,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:01:41,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521813164] [2023-08-29 23:01:41,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:01:41,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:01:41,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:01:41,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:01:41,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:01:41,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 461 [2023-08-29 23:01:41,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 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 23:01:41,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:01:41,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 461 [2023-08-29 23:01:41,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:01:41,527 INFO L130 PetriNetUnfolder]: 37/80 cut-off events. [2023-08-29 23:01:41,528 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:01:41,528 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 23:01:41,534 INFO L137 encePairwiseOnDemand]: 459/461 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-29 23:01:41,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2023-08-29 23:01:41,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:01:41,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:01:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2023-08-29 23:01:41,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4396240057845264 [2023-08-29 23:01:41,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2023-08-29 23:01:41,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2023-08-29 23:01:41,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:01:41,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2023-08-29 23:01:41,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 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 23:01:41,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 0 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 23:01:41,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 0 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 23:01:41,541 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 608 transitions. [2023-08-29 23:01:41,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2023-08-29 23:01:41,542 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 23:01:41,542 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2023-08-29 23:01:41,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, 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 23:01:41,543 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-29 23:01:41,543 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2023-08-29 23:01:41,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 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 23:01:41,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:01:41,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:01:41,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 23:01:41,544 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 23:01:41,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:01:41,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1523457910, now seen corresponding path program 1 times [2023-08-29 23:01:41,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:01:41,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725560842] [2023-08-29 23:01:41,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:01:41,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:01:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:01:42,802 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 23:01:42,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:01:42,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725560842] [2023-08-29 23:01:42,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725560842] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:01:42,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:01:42,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 23:01:42,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283935233] [2023-08-29 23:01:42,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:01:42,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:01:42,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:01:42,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:01:42,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:01:42,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 461 [2023-08-29 23:01:42,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 23:01:42,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:01:42,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 461 [2023-08-29 23:01:42,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:01:43,150 INFO L130 PetriNetUnfolder]: 40/106 cut-off events. [2023-08-29 23:01:43,150 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 23:01:43,151 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 327 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 23:01:43,151 INFO L137 encePairwiseOnDemand]: 456/461 looper letters, 30 selfloop transitions, 6 changer transitions 9/45 dead transitions. [2023-08-29 23:01:43,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 203 flow [2023-08-29 23:01:43,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 23:01:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 23:01:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1150 transitions. [2023-08-29 23:01:43,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41576283441793205 [2023-08-29 23:01:43,155 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1150 transitions. [2023-08-29 23:01:43,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1150 transitions. [2023-08-29 23:01:43,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:01:43,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1150 transitions. [2023-08-29 23:01:43,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 191.66666666666666) internal successors, (1150), 6 states have internal predecessors, (1150), 0 states have call successors, (0), 0 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 23:01:43,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 0 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 23:01:43,162 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 0 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 23:01:43,162 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 6 states and 1150 transitions. [2023-08-29 23:01:43,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 203 flow [2023-08-29 23:01:43,162 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 23:01:43,163 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 77 flow [2023-08-29 23:01:43,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, 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 23:01:43,164 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -4 predicate places. [2023-08-29 23:01:43,164 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 77 flow [2023-08-29 23:01:43,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 23:01:43,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:01:43,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:01:43,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 23:01:43,165 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 23:01:43,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:01:43,166 INFO L85 PathProgramCache]: Analyzing trace with hash -457282524, now seen corresponding path program 2 times [2023-08-29 23:01:43,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:01:43,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847937475] [2023-08-29 23:01:43,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:01:43,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:01:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:01:44,045 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 23:01:44,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:01:44,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847937475] [2023-08-29 23:01:44,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847937475] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:01:44,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:01:44,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 23:01:44,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279788476] [2023-08-29 23:01:44,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:01:44,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:01:44,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:01:44,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:01:44,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:01:44,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 461 [2023-08-29 23:01:44,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 23:01:44,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:01:44,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 461 [2023-08-29 23:01:44,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:01:44,408 INFO L130 PetriNetUnfolder]: 36/114 cut-off events. [2023-08-29 23:01:44,409 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-08-29 23:01:44,409 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 23:01:44,409 INFO L137 encePairwiseOnDemand]: 456/461 looper letters, 28 selfloop transitions, 5 changer transitions 10/43 dead transitions. [2023-08-29 23:01:44,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 227 flow [2023-08-29 23:01:44,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 23:01:44,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 23:01:44,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1148 transitions. [2023-08-29 23:01:44,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4150397686189443 [2023-08-29 23:01:44,413 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1148 transitions. [2023-08-29 23:01:44,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1148 transitions. [2023-08-29 23:01:44,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:01:44,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1148 transitions. [2023-08-29 23:01:44,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 191.33333333333334) internal successors, (1148), 6 states have internal predecessors, (1148), 0 states have call successors, (0), 0 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 23:01:44,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 0 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 23:01:44,420 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 0 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 23:01:44,420 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 77 flow. Second operand 6 states and 1148 transitions. [2023-08-29 23:01:44,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 227 flow [2023-08-29 23:01:44,421 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 23:01:44,422 INFO L231 Difference]: Finished difference. Result has 41 places, 20 transitions, 95 flow [2023-08-29 23:01:44,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, 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 23:01:44,423 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-29 23:01:44,423 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 95 flow [2023-08-29 23:01:44,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 23:01:44,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:01:44,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:01:44,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 23:01:44,424 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 23:01:44,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:01:44,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1504680478, now seen corresponding path program 3 times [2023-08-29 23:01:44,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:01:44,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087033784] [2023-08-29 23:01:44,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:01:44,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:01:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:01:45,514 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 23:01:45,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:01:45,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087033784] [2023-08-29 23:01:45,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087033784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:01:45,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:01:45,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 23:01:45,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845839292] [2023-08-29 23:01:45,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:01:45,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:01:45,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:01:45,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:01:45,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:01:45,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 461 [2023-08-29 23:01:45,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 23:01:45,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:01:45,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 461 [2023-08-29 23:01:45,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:01:46,160 INFO L130 PetriNetUnfolder]: 20/70 cut-off events. [2023-08-29 23:01:46,160 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2023-08-29 23:01:46,161 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 185 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 23:01:46,161 INFO L137 encePairwiseOnDemand]: 456/461 looper letters, 27 selfloop transitions, 6 changer transitions 9/42 dead transitions. [2023-08-29 23:01:46,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 239 flow [2023-08-29 23:01:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 23:01:46,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 23:01:46,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1146 transitions. [2023-08-29 23:01:46,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41431670281995664 [2023-08-29 23:01:46,166 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1146 transitions. [2023-08-29 23:01:46,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1146 transitions. [2023-08-29 23:01:46,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:01:46,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1146 transitions. [2023-08-29 23:01:46,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 23:01:46,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 0 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 23:01:46,175 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 0 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 23:01:46,175 INFO L175 Difference]: Start difference. First operand has 41 places, 20 transitions, 95 flow. Second operand 6 states and 1146 transitions. [2023-08-29 23:01:46,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 239 flow [2023-08-29 23:01:46,178 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 23:01:46,179 INFO L231 Difference]: Finished difference. Result has 42 places, 20 transitions, 97 flow [2023-08-29 23:01:46,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, 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 23:01:46,181 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-29 23:01:46,181 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 20 transitions, 97 flow [2023-08-29 23:01:46,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 23:01:46,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:01:46,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:01:46,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 23:01:46,183 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 23:01:46,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:01:46,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1423800638, now seen corresponding path program 4 times [2023-08-29 23:01:46,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:01:46,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270975957] [2023-08-29 23:01:46,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:01:46,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:01:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:01:47,267 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 23:01:47,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:01:47,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270975957] [2023-08-29 23:01:47,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270975957] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:01:47,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:01:47,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 23:01:47,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412913237] [2023-08-29 23:01:47,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:01:47,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:01:47,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:01:47,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:01:47,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:01:47,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 461 [2023-08-29 23:01:47,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 20 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 23:01:47,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:01:47,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 461 [2023-08-29 23:01:47,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:01:47,905 INFO L130 PetriNetUnfolder]: 15/67 cut-off events. [2023-08-29 23:01:47,906 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-08-29 23:01:47,906 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 182 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 23:01:47,906 INFO L137 encePairwiseOnDemand]: 456/461 looper letters, 18 selfloop transitions, 4 changer transitions 12/34 dead transitions. [2023-08-29 23:01:47,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 205 flow [2023-08-29 23:01:47,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 23:01:47,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 23:01:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1138 transitions. [2023-08-29 23:01:47,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41142443962400577 [2023-08-29 23:01:47,910 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1138 transitions. [2023-08-29 23:01:47,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1138 transitions. [2023-08-29 23:01:47,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:01:47,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1138 transitions. [2023-08-29 23:01:47,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 0 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 23:01:47,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 0 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 23:01:47,917 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 0 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 23:01:47,917 INFO L175 Difference]: Start difference. First operand has 42 places, 20 transitions, 97 flow. Second operand 6 states and 1138 transitions. [2023-08-29 23:01:47,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 205 flow [2023-08-29 23:01:47,919 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 23:01:47,919 INFO L231 Difference]: Finished difference. Result has 45 places, 18 transitions, 91 flow [2023-08-29 23:01:47,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, 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 23:01:47,920 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-08-29 23:01:47,920 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 18 transitions, 91 flow [2023-08-29 23:01:47,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 23:01:47,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:01:47,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:01:47,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 23:01:47,921 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 23:01:47,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:01:47,922 INFO L85 PathProgramCache]: Analyzing trace with hash -679098140, now seen corresponding path program 5 times [2023-08-29 23:01:47,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:01:47,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737287357] [2023-08-29 23:01:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:01:47,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:01:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:01:48,799 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 23:01:48,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:01:48,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737287357] [2023-08-29 23:01:48,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737287357] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:01:48,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:01:48,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 23:01:48,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104019759] [2023-08-29 23:01:48,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:01:48,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:01:48,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:01:48,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:01:48,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:01:48,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 461 [2023-08-29 23:01:48,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 18 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 23:01:48,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:01:48,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 461 [2023-08-29 23:01:48,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:01:49,430 INFO L130 PetriNetUnfolder]: 7/37 cut-off events. [2023-08-29 23:01:49,430 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-29 23:01:49,430 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 55 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 23:01:49,431 INFO L137 encePairwiseOnDemand]: 456/461 looper letters, 17 selfloop transitions, 3 changer transitions 8/28 dead transitions. [2023-08-29 23:01:49,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 28 transitions, 171 flow [2023-08-29 23:01:49,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 23:01:49,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 23:01:49,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1132 transitions. [2023-08-29 23:01:49,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092552422270427 [2023-08-29 23:01:49,434 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1132 transitions. [2023-08-29 23:01:49,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1132 transitions. [2023-08-29 23:01:49,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:01:49,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1132 transitions. [2023-08-29 23:01:49,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.66666666666666) internal successors, (1132), 6 states have internal predecessors, (1132), 0 states have call successors, (0), 0 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 23:01:49,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 0 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 23:01:49,442 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 0 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 23:01:49,442 INFO L175 Difference]: Start difference. First operand has 45 places, 18 transitions, 91 flow. Second operand 6 states and 1132 transitions. [2023-08-29 23:01:49,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 28 transitions, 171 flow [2023-08-29 23:01:49,444 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 23:01:49,445 INFO L231 Difference]: Finished difference. Result has 41 places, 16 transitions, 65 flow [2023-08-29 23:01:49,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, 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 23:01:49,448 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-29 23:01:49,448 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 16 transitions, 65 flow [2023-08-29 23:01:49,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 23:01:49,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:01:49,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:01:49,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 23:01:49,449 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 23:01:49,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:01:49,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1205370164, now seen corresponding path program 6 times [2023-08-29 23:01:49,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:01:49,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280749475] [2023-08-29 23:01:49,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:01:49,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:01:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:01:50,253 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 23:01:50,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:01:50,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280749475] [2023-08-29 23:01:50,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280749475] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:01:50,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:01:50,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 23:01:50,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996485867] [2023-08-29 23:01:50,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:01:50,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:01:50,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:01:50,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:01:50,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:01:50,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 461 [2023-08-29 23:01:50,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 16 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 23:01:50,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:01:50,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 461 [2023-08-29 23:01:50,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:01:50,580 INFO L130 PetriNetUnfolder]: 5/25 cut-off events. [2023-08-29 23:01:50,580 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-29 23:01:50,581 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 18 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 23:01:50,581 INFO L137 encePairwiseOnDemand]: 456/461 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-29 23:01:50,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 20 transitions, 112 flow [2023-08-29 23:01:50,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 23:01:50,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 23:01:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1125 transitions. [2023-08-29 23:01:50,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4067245119305857 [2023-08-29 23:01:50,584 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1125 transitions. [2023-08-29 23:01:50,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1125 transitions. [2023-08-29 23:01:50,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:01:50,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1125 transitions. [2023-08-29 23:01:50,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 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 23:01:50,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 0 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 23:01:50,598 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 0 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 23:01:50,599 INFO L175 Difference]: Start difference. First operand has 41 places, 16 transitions, 65 flow. Second operand 6 states and 1125 transitions. [2023-08-29 23:01:50,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 20 transitions, 112 flow [2023-08-29 23:01:50,599 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 23:01:50,600 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-29 23:01:50,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, 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 23:01:50,600 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-08-29 23:01:50,601 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-29 23:01:50,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 23:01:50,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-08-29 23:01:50,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-08-29 23:01:50,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-08-29 23:01:50,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-08-29 23:01:50,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-08-29 23:01:50,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-08-29 23:01:50,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-08-29 23:01:50,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-08-29 23:01:50,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-08-29 23:01:50,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-08-29 23:01:50,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-08-29 23:01:50,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-08-29 23:01:50,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-08-29 23:01:50,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-08-29 23:01:50,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-08-29 23:01:50,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-08-29 23:01:50,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-08-29 23:01:50,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 23:01:50,606 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:01:50,609 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 23:01:50,609 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 23:01:50,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 11:01:50 BasicIcfg [2023-08-29 23:01:50,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 23:01:50,613 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 23:01:50,613 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 23:01:50,613 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 23:01:50,614 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:01:32" (3/4) ... [2023-08-29 23:01:50,616 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 23:01:50,620 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-29 23:01:50,621 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-29 23:01:50,621 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-29 23:01:50,625 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-08-29 23:01:50,625 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 23:01:50,626 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 23:01:50,626 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 23:01:50,667 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 23:01:50,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 23:01:50,668 INFO L158 Benchmark]: Toolchain (without parser) took 18674.91ms. Allocated memory was 75.5MB in the beginning and 289.4MB in the end (delta: 213.9MB). Free memory was 51.2MB in the beginning and 114.1MB in the end (delta: -62.9MB). Peak memory consumption was 151.7MB. Max. memory is 16.1GB. [2023-08-29 23:01:50,668 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 23:01:50,669 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.87ms. Allocated memory is still 75.5MB. Free memory was 51.0MB in the beginning and 39.8MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-29 23:01:50,669 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.05ms. Allocated memory is still 75.5MB. Free memory was 39.6MB in the beginning and 37.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 23:01:50,669 INFO L158 Benchmark]: Boogie Preprocessor took 56.84ms. Allocated memory is still 75.5MB. Free memory was 37.5MB in the beginning and 55.9MB in the end (delta: -18.4MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2023-08-29 23:01:50,670 INFO L158 Benchmark]: RCFGBuilder took 543.43ms. Allocated memory is still 75.5MB. Free memory was 55.9MB in the beginning and 36.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-29 23:01:50,670 INFO L158 Benchmark]: TraceAbstraction took 17753.38ms. Allocated memory was 75.5MB in the beginning and 289.4MB in the end (delta: 213.9MB). Free memory was 35.6MB in the beginning and 117.3MB in the end (delta: -81.6MB). Peak memory consumption was 131.9MB. Max. memory is 16.1GB. [2023-08-29 23:01:50,670 INFO L158 Benchmark]: Witness Printer took 54.82ms. Allocated memory is still 289.4MB. Free memory was 117.3MB in the beginning and 114.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 23:01:50,672 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.87ms. Allocated memory is still 75.5MB. Free memory was 51.0MB in the beginning and 39.8MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.05ms. Allocated memory is still 75.5MB. Free memory was 39.6MB in the beginning and 37.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.84ms. Allocated memory is still 75.5MB. Free memory was 37.5MB in the beginning and 55.9MB in the end (delta: -18.4MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * RCFGBuilder took 543.43ms. Allocated memory is still 75.5MB. Free memory was 55.9MB in the beginning and 36.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 17753.38ms. Allocated memory was 75.5MB in the beginning and 289.4MB in the end (delta: 213.9MB). Free memory was 35.6MB in the beginning and 117.3MB in the end (delta: -81.6MB). Peak memory consumption was 131.9MB. Max. memory is 16.1GB. * Witness Printer took 54.82ms. Allocated memory is still 289.4MB. Free memory was 117.3MB in the beginning and 114.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.6s, 206 PlacesBefore, 39 PlacesAfterwards, 210 TransitionsBefore, 29 TransitionsAfterwards, 10608 CoEnabledTransitionPairs, 7 FixpointIterations, 75 TrivialSequentialCompositions, 110 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 42 ConcurrentYvCompositions, 14 ChoiceCompositions, 244 TotalNumberOfCompositions, 10184 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10184, independent: 10184, independent conditional: 0, independent unconditional: 10184, 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: 6504, independent: 6504, independent conditional: 0, independent unconditional: 6504, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10184, independent: 3680, independent conditional: 0, independent unconditional: 3680, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 6504, unknown conditional: 0, unknown unconditional: 6504] , 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: 81]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 60]: 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, 300 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: 17.6s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1470 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 881 mSDsluCounter, 411 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 246 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1802 IncrementalHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 165 mSDtfsCounter, 1802 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s 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, 0.3s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 3274 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 23:01:50,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE