./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 22:18:19,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:18:19,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:18:19,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:18:19,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:18:19,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:18:19,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:18:19,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:18:19,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:18:19,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:18:19,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:18:19,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:18:19,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:18:19,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:18:19,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:18:19,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:18:19,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:18:19,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:18:19,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:18:19,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:18:19,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:18:19,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:18:19,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:18:19,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:18:19,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:18:19,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:18:19,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:18:19,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:18:19,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:18:19,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:18:19,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:18:19,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:18:19,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:18:19,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:18:19,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:18:19,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:18:19,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:18:19,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:18:19,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:18:19,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:18:19,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:18:19,783 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 22:18:19,811 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:18:19,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:18:19,813 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:18:19,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:18:19,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:18:19,814 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:18:19,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:18:19,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:18:19,815 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:18:19,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:18:19,816 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:18:19,816 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:18:19,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:18:19,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:18:19,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:18:19,817 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:18:19,817 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:18:19,817 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:18:19,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:18:19,817 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:18:19,817 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:18:19,818 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:18:19,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:18:19,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:18:19,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:18:19,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:18:19,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:18:19,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:18:19,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 22:18:19,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 22:18:19,819 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:18:19,820 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:18:19,820 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:18:19,820 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:18:19,820 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:18:20,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:18:20,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:18:20,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:18:20,112 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:18:20,112 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:18:20,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-29 22:18:21,323 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:18:21,609 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:18:21,610 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-29 22:18:21,627 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58fed1fa4/002ee2c598fc4a46940e1087a565ddb9/FLAG3fd495e20 [2023-08-29 22:18:21,637 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58fed1fa4/002ee2c598fc4a46940e1087a565ddb9 [2023-08-29 22:18:21,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:18:21,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:18:21,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:18:21,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:18:21,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:18:21,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:18:21" (1/1) ... [2023-08-29 22:18:21,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@85ca996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:21, skipping insertion in model container [2023-08-29 22:18:21,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:18:21" (1/1) ... [2023-08-29 22:18:21,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:18:21,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:18:21,816 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2023-08-29 22:18:21,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:18:21,951 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 22:18:21,962 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2023-08-29 22:18:22,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:18:22,066 INFO L208 MainTranslator]: Completed translation [2023-08-29 22:18:22,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:22 WrapperNode [2023-08-29 22:18:22,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:18:22,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 22:18:22,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 22:18:22,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 22:18:22,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:22" (1/1) ... [2023-08-29 22:18:22,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:22" (1/1) ... [2023-08-29 22:18:22,131 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 143 [2023-08-29 22:18:22,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 22:18:22,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 22:18:22,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 22:18:22,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 22:18:22,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:22" (1/1) ... [2023-08-29 22:18:22,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:22" (1/1) ... [2023-08-29 22:18:22,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:22" (1/1) ... [2023-08-29 22:18:22,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:22" (1/1) ... [2023-08-29 22:18:22,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:22" (1/1) ... [2023-08-29 22:18:22,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:22" (1/1) ... [2023-08-29 22:18:22,156 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:22" (1/1) ... [2023-08-29 22:18:22,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:22" (1/1) ... [2023-08-29 22:18:22,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 22:18:22,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 22:18:22,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 22:18:22,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 22:18:22,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:22" (1/1) ... [2023-08-29 22:18:22,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:18:22,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:18:22,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 22:18:22,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 22:18:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 22:18:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 22:18:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 22:18:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 22:18:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 22:18:22,222 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 22:18:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 22:18:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 22:18:22,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 22:18:22,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 22:18:22,224 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 22:18:22,327 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 22:18:22,329 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 22:18:22,627 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 22:18:22,646 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 22:18:22,646 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 22:18:22,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:18:22 BoogieIcfgContainer [2023-08-29 22:18:22,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 22:18:22,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 22:18:22,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 22:18:22,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 22:18:22,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:18:21" (1/3) ... [2023-08-29 22:18:22,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1cd633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:18:22, skipping insertion in model container [2023-08-29 22:18:22,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:18:22" (2/3) ... [2023-08-29 22:18:22,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1cd633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:18:22, skipping insertion in model container [2023-08-29 22:18:22,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:18:22" (3/3) ... [2023-08-29 22:18:22,657 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-29 22:18:22,671 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 22:18:22,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-29 22:18:22,672 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 22:18:22,780 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 22:18:22,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 172 transitions, 349 flow [2023-08-29 22:18:22,927 INFO L130 PetriNetUnfolder]: 8/177 cut-off events. [2023-08-29 22:18:22,927 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:18:22,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 177 events. 8/177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 173 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2023-08-29 22:18:22,934 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 172 transitions, 349 flow [2023-08-29 22:18:22,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 171 transitions, 345 flow [2023-08-29 22:18:22,945 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 22:18:22,966 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 171 transitions, 345 flow [2023-08-29 22:18:22,979 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 171 transitions, 345 flow [2023-08-29 22:18:22,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 171 transitions, 345 flow [2023-08-29 22:18:23,022 INFO L130 PetriNetUnfolder]: 8/177 cut-off events. [2023-08-29 22:18:23,023 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:18:23,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 177 events. 8/177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 173 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2023-08-29 22:18:23,030 INFO L119 LiptonReduction]: Number of co-enabled transitions 7296 [2023-08-29 22:18:28,291 INFO L134 LiptonReduction]: Checked pairs total: 13032 [2023-08-29 22:18:28,292 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-08-29 22:18:28,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 22:18:28,308 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;@906edf5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 22:18:28,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-29 22:18:28,310 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 22:18:28,311 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:18:28,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:28,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 22:18:28,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 22:18:28,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash 679, now seen corresponding path program 1 times [2023-08-29 22:18:28,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:28,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53735415] [2023-08-29 22:18:28,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:28,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:28,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:28,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53735415] [2023-08-29 22:18:28,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53735415] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:28,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:28,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 22:18:28,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324789131] [2023-08-29 22:18:28,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:28,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 22:18:28,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:28,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 22:18:28,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 22:18:28,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 359 [2023-08-29 22:18:28,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 77 flow. Second operand has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:28,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:28,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 359 [2023-08-29 22:18:28,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:28,575 INFO L130 PetriNetUnfolder]: 136/344 cut-off events. [2023-08-29 22:18:28,575 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:18:28,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 344 events. 136/344 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1478 event pairs, 126 based on Foata normal form. 10/295 useless extension candidates. Maximal degree in co-relation 624. Up to 290 conditions per place. [2023-08-29 22:18:28,578 INFO L137 encePairwiseOnDemand]: 355/359 looper letters, 27 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2023-08-29 22:18:28,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 123 flow [2023-08-29 22:18:28,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 22:18:28,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 22:18:28,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 353 transitions. [2023-08-29 22:18:28,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49164345403899723 [2023-08-29 22:18:28,591 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 353 transitions. [2023-08-29 22:18:28,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 353 transitions. [2023-08-29 22:18:28,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:28,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 353 transitions. [2023-08-29 22:18:28,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:28,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 359.0) internal successors, (1077), 3 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:28,603 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 359.0) internal successors, (1077), 3 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:28,604 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 77 flow. Second operand 2 states and 353 transitions. [2023-08-29 22:18:28,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 123 flow [2023-08-29 22:18:28,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:18:28,608 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 68 flow [2023-08-29 22:18:28,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-08-29 22:18:28,612 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2023-08-29 22:18:28,613 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 68 flow [2023-08-29 22:18:28,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:28,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:28,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:18:28,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 22:18:28,614 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 22:18:28,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:28,615 INFO L85 PathProgramCache]: Analyzing trace with hash 21278, now seen corresponding path program 1 times [2023-08-29 22:18:28,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:28,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462078400] [2023-08-29 22:18:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:28,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:28,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:28,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462078400] [2023-08-29 22:18:28,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462078400] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:28,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:28,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:18:28,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997481111] [2023-08-29 22:18:28,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:28,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:18:28,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:28,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:18:28,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:18:28,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 359 [2023-08-29 22:18:28,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:28,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:28,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 359 [2023-08-29 22:18:28,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:28,821 INFO L130 PetriNetUnfolder]: 151/358 cut-off events. [2023-08-29 22:18:28,822 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:18:28,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 358 events. 151/358 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1445 event pairs, 126 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 679. Up to 288 conditions per place. [2023-08-29 22:18:28,825 INFO L137 encePairwiseOnDemand]: 356/359 looper letters, 36 selfloop transitions, 1 changer transitions 7/49 dead transitions. [2023-08-29 22:18:28,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 49 transitions, 188 flow [2023-08-29 22:18:28,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:18:28,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:18:28,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-08-29 22:18:28,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735376044568245 [2023-08-29 22:18:28,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-08-29 22:18:28,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-08-29 22:18:28,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:28,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-08-29 22:18:28,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:28,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:28,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:28,838 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 68 flow. Second operand 3 states and 510 transitions. [2023-08-29 22:18:28,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 49 transitions, 188 flow [2023-08-29 22:18:28,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 49 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:18:28,840 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 71 flow [2023-08-29 22:18:28,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-08-29 22:18:28,841 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2023-08-29 22:18:28,841 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 71 flow [2023-08-29 22:18:28,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:28,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:28,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 22:18:28,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 22:18:28,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 22:18:28,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:28,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1560783414, now seen corresponding path program 1 times [2023-08-29 22:18:28,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:28,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246658257] [2023-08-29 22:18:28,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:28,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:29,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:29,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246658257] [2023-08-29 22:18:29,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246658257] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:29,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:29,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 22:18:29,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097335076] [2023-08-29 22:18:29,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:29,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 22:18:29,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:29,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 22:18:29,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 22:18:29,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 359 [2023-08-29 22:18:29,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:29,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:29,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 359 [2023-08-29 22:18:29,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:29,281 INFO L130 PetriNetUnfolder]: 139/367 cut-off events. [2023-08-29 22:18:29,281 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-29 22:18:29,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 367 events. 139/367 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1585 event pairs, 16 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 696. Up to 210 conditions per place. [2023-08-29 22:18:29,284 INFO L137 encePairwiseOnDemand]: 353/359 looper letters, 47 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2023-08-29 22:18:29,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 58 transitions, 227 flow [2023-08-29 22:18:29,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 22:18:29,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 22:18:29,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 826 transitions. [2023-08-29 22:18:29,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46016713091922007 [2023-08-29 22:18:29,288 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 826 transitions. [2023-08-29 22:18:29,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 826 transitions. [2023-08-29 22:18:29,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:29,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 826 transitions. [2023-08-29 22:18:29,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:29,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:29,295 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:29,295 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 71 flow. Second operand 5 states and 826 transitions. [2023-08-29 22:18:29,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 58 transitions, 227 flow [2023-08-29 22:18:29,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 58 transitions, 223 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 22:18:29,299 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 102 flow [2023-08-29 22:18:29,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2023-08-29 22:18:29,300 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2023-08-29 22:18:29,301 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 102 flow [2023-08-29 22:18:29,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:29,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:29,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:18:29,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 22:18:29,302 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 22:18:29,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:29,303 INFO L85 PathProgramCache]: Analyzing trace with hash -969308565, now seen corresponding path program 1 times [2023-08-29 22:18:29,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:29,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861814301] [2023-08-29 22:18:29,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:29,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:29,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:29,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861814301] [2023-08-29 22:18:29,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861814301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:29,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:29,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 22:18:29,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745720322] [2023-08-29 22:18:29,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:29,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:18:29,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:29,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:18:29,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:18:29,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 359 [2023-08-29 22:18:29,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 152.6) internal successors, (763), 5 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:29,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:29,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 359 [2023-08-29 22:18:29,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:29,661 INFO L130 PetriNetUnfolder]: 169/449 cut-off events. [2023-08-29 22:18:29,661 INFO L131 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2023-08-29 22:18:29,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 449 events. 169/449 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2163 event pairs, 56 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 946. Up to 201 conditions per place. [2023-08-29 22:18:29,663 INFO L137 encePairwiseOnDemand]: 353/359 looper letters, 57 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2023-08-29 22:18:29,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 316 flow [2023-08-29 22:18:29,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 22:18:29,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 22:18:29,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1277 transitions. [2023-08-29 22:18:29,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44463788300835655 [2023-08-29 22:18:29,668 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1277 transitions. [2023-08-29 22:18:29,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1277 transitions. [2023-08-29 22:18:29,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:29,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1277 transitions. [2023-08-29 22:18:29,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.625) internal successors, (1277), 8 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:29,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 359.0) internal successors, (3231), 9 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:29,677 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 359.0) internal successors, (3231), 9 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:29,677 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 102 flow. Second operand 8 states and 1277 transitions. [2023-08-29 22:18:29,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 316 flow [2023-08-29 22:18:29,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:18:29,679 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 145 flow [2023-08-29 22:18:29,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=145, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-08-29 22:18:29,680 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2023-08-29 22:18:29,680 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 145 flow [2023-08-29 22:18:29,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.6) internal successors, (763), 5 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:29,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:29,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:18:29,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 22:18:29,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 22:18:29,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:29,681 INFO L85 PathProgramCache]: Analyzing trace with hash 165120180, now seen corresponding path program 1 times [2023-08-29 22:18:29,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:29,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354566900] [2023-08-29 22:18:29,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:29,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:29,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:29,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:29,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354566900] [2023-08-29 22:18:29,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354566900] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:29,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:29,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 22:18:29,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750819961] [2023-08-29 22:18:29,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:29,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:18:29,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:29,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:18:29,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:18:29,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 359 [2023-08-29 22:18:29,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:29,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:29,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 359 [2023-08-29 22:18:29,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:29,853 INFO L130 PetriNetUnfolder]: 186/486 cut-off events. [2023-08-29 22:18:29,854 INFO L131 PetriNetUnfolder]: For 175/175 co-relation queries the response was YES. [2023-08-29 22:18:29,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 486 events. 186/486 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2396 event pairs, 75 based on Foata normal form. 16/457 useless extension candidates. Maximal degree in co-relation 1117. Up to 283 conditions per place. [2023-08-29 22:18:29,856 INFO L137 encePairwiseOnDemand]: 349/359 looper letters, 47 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2023-08-29 22:18:29,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 321 flow [2023-08-29 22:18:29,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:18:29,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:18:29,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-29 22:18:29,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46982358402971214 [2023-08-29 22:18:29,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-29 22:18:29,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-29 22:18:29,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:29,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-29 22:18:29,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:29,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:29,863 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:29,863 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 145 flow. Second operand 3 states and 506 transitions. [2023-08-29 22:18:29,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 321 flow [2023-08-29 22:18:29,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 289 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-29 22:18:29,866 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 166 flow [2023-08-29 22:18:29,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-08-29 22:18:29,867 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2023-08-29 22:18:29,867 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 166 flow [2023-08-29 22:18:29,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:29,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:29,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:18:29,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 22:18:29,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 22:18:29,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:29,869 INFO L85 PathProgramCache]: Analyzing trace with hash 502413908, now seen corresponding path program 1 times [2023-08-29 22:18:29,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:29,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274813459] [2023-08-29 22:18:29,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:29,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:29,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:29,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274813459] [2023-08-29 22:18:29,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274813459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:29,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:29,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:18:29,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312077597] [2023-08-29 22:18:29,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:29,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 22:18:29,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:29,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 22:18:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-29 22:18:30,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 359 [2023-08-29 22:18:30,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 152.66666666666666) internal successors, (916), 6 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:30,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:30,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 359 [2023-08-29 22:18:30,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:30,219 INFO L130 PetriNetUnfolder]: 189/517 cut-off events. [2023-08-29 22:18:30,221 INFO L131 PetriNetUnfolder]: For 125/125 co-relation queries the response was YES. [2023-08-29 22:18:30,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1381 conditions, 517 events. 189/517 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2725 event pairs, 69 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 1371. Up to 206 conditions per place. [2023-08-29 22:18:30,225 INFO L137 encePairwiseOnDemand]: 351/359 looper letters, 73 selfloop transitions, 10 changer transitions 1/91 dead transitions. [2023-08-29 22:18:30,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 91 transitions, 502 flow [2023-08-29 22:18:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 22:18:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 22:18:30,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1281 transitions. [2023-08-29 22:18:30,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44603064066852366 [2023-08-29 22:18:30,230 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1281 transitions. [2023-08-29 22:18:30,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1281 transitions. [2023-08-29 22:18:30,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:30,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1281 transitions. [2023-08-29 22:18:30,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 160.125) internal successors, (1281), 8 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:30,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 359.0) internal successors, (3231), 9 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:30,240 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 359.0) internal successors, (3231), 9 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:30,240 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 166 flow. Second operand 8 states and 1281 transitions. [2023-08-29 22:18:30,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 91 transitions, 502 flow [2023-08-29 22:18:30,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 91 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:18:30,246 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 215 flow [2023-08-29 22:18:30,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=215, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-08-29 22:18:30,248 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2023-08-29 22:18:30,249 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 215 flow [2023-08-29 22:18:30,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.66666666666666) internal successors, (916), 6 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:30,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:30,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:18:30,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 22:18:30,250 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 22:18:30,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:30,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1608476393, now seen corresponding path program 1 times [2023-08-29 22:18:30,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:30,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002140927] [2023-08-29 22:18:30,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:30,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:30,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:30,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002140927] [2023-08-29 22:18:30,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002140927] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:30,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:30,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:18:30,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017612306] [2023-08-29 22:18:30,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:30,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:18:30,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:30,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:18:30,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:18:30,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 359 [2023-08-29 22:18:30,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:30,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:30,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 359 [2023-08-29 22:18:30,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:30,605 INFO L130 PetriNetUnfolder]: 183/508 cut-off events. [2023-08-29 22:18:30,606 INFO L131 PetriNetUnfolder]: For 286/294 co-relation queries the response was YES. [2023-08-29 22:18:30,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 508 events. 183/508 cut-off events. For 286/294 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2733 event pairs, 71 based on Foata normal form. 3/488 useless extension candidates. Maximal degree in co-relation 1395. Up to 284 conditions per place. [2023-08-29 22:18:30,609 INFO L137 encePairwiseOnDemand]: 353/359 looper letters, 65 selfloop transitions, 8 changer transitions 0/82 dead transitions. [2023-08-29 22:18:30,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 82 transitions, 482 flow [2023-08-29 22:18:30,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 22:18:30,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 22:18:30,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 814 transitions. [2023-08-29 22:18:30,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348189415041784 [2023-08-29 22:18:30,612 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 814 transitions. [2023-08-29 22:18:30,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 814 transitions. [2023-08-29 22:18:30,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:30,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 814 transitions. [2023-08-29 22:18:30,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.8) internal successors, (814), 5 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:30,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:30,617 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:30,617 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 215 flow. Second operand 5 states and 814 transitions. [2023-08-29 22:18:30,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 82 transitions, 482 flow [2023-08-29 22:18:30,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 82 transitions, 476 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 22:18:30,620 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 243 flow [2023-08-29 22:18:30,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-08-29 22:18:30,621 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 25 predicate places. [2023-08-29 22:18:30,621 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 243 flow [2023-08-29 22:18:30,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:30,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:30,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:18:30,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 22:18:30,622 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 22:18:30,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:30,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1931766655, now seen corresponding path program 1 times [2023-08-29 22:18:30,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:30,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929802338] [2023-08-29 22:18:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:30,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:30,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:30,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929802338] [2023-08-29 22:18:30,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929802338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:30,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:30,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 22:18:30,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586178102] [2023-08-29 22:18:30,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:30,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:18:30,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:30,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:18:30,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:18:30,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 359 [2023-08-29 22:18:30,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:30,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:30,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 359 [2023-08-29 22:18:30,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:30,895 INFO L130 PetriNetUnfolder]: 184/506 cut-off events. [2023-08-29 22:18:30,895 INFO L131 PetriNetUnfolder]: For 286/286 co-relation queries the response was YES. [2023-08-29 22:18:30,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 506 events. 184/506 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2636 event pairs, 77 based on Foata normal form. 5/487 useless extension candidates. Maximal degree in co-relation 1490. Up to 205 conditions per place. [2023-08-29 22:18:30,898 INFO L137 encePairwiseOnDemand]: 352/359 looper letters, 72 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2023-08-29 22:18:30,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 89 transitions, 552 flow [2023-08-29 22:18:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:18:30,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:18:30,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1132 transitions. [2023-08-29 22:18:30,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4504576203740549 [2023-08-29 22:18:30,902 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1132 transitions. [2023-08-29 22:18:30,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1132 transitions. [2023-08-29 22:18:30,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:30,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1132 transitions. [2023-08-29 22:18:30,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.71428571428572) internal successors, (1132), 7 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 22:18:30,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 359.0) internal successors, (2872), 8 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:30,909 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 359.0) internal successors, (2872), 8 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:30,909 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 243 flow. Second operand 7 states and 1132 transitions. [2023-08-29 22:18:30,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 89 transitions, 552 flow [2023-08-29 22:18:30,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 537 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 22:18:30,913 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 293 flow [2023-08-29 22:18:30,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2023-08-29 22:18:30,914 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2023-08-29 22:18:30,914 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 293 flow [2023-08-29 22:18:30,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:30,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:30,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:18:30,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 22:18:30,915 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 22:18:30,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:30,915 INFO L85 PathProgramCache]: Analyzing trace with hash -442446902, now seen corresponding path program 1 times [2023-08-29 22:18:30,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:30,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415449235] [2023-08-29 22:18:30,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:30,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:31,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415449235] [2023-08-29 22:18:31,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415449235] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:31,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:31,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 22:18:31,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419763651] [2023-08-29 22:18:31,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:31,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 22:18:31,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:31,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 22:18:31,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-29 22:18:31,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 359 [2023-08-29 22:18:31,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 151.16666666666666) internal successors, (907), 6 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:31,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:31,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 359 [2023-08-29 22:18:31,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:31,271 INFO L130 PetriNetUnfolder]: 175/463 cut-off events. [2023-08-29 22:18:31,271 INFO L131 PetriNetUnfolder]: For 452/454 co-relation queries the response was YES. [2023-08-29 22:18:31,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 463 events. 175/463 cut-off events. For 452/454 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2380 event pairs, 82 based on Foata normal form. 6/444 useless extension candidates. Maximal degree in co-relation 1480. Up to 215 conditions per place. [2023-08-29 22:18:31,281 INFO L137 encePairwiseOnDemand]: 354/359 looper letters, 55 selfloop transitions, 8 changer transitions 3/72 dead transitions. [2023-08-29 22:18:31,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 72 transitions, 508 flow [2023-08-29 22:18:31,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 22:18:31,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 22:18:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 640 transitions. [2023-08-29 22:18:31,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4456824512534819 [2023-08-29 22:18:31,283 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 640 transitions. [2023-08-29 22:18:31,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 640 transitions. [2023-08-29 22:18:31,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:31,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 640 transitions. [2023-08-29 22:18:31,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:31,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:31,288 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:31,288 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 293 flow. Second operand 4 states and 640 transitions. [2023-08-29 22:18:31,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 72 transitions, 508 flow [2023-08-29 22:18:31,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 500 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 22:18:31,292 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 292 flow [2023-08-29 22:18:31,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2023-08-29 22:18:31,293 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2023-08-29 22:18:31,293 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 292 flow [2023-08-29 22:18:31,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.16666666666666) internal successors, (907), 6 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:31,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:31,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:18:31,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 22:18:31,294 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 22:18:31,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:31,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1888235010, now seen corresponding path program 1 times [2023-08-29 22:18:31,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:31,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852557785] [2023-08-29 22:18:31,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:31,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:31,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:31,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852557785] [2023-08-29 22:18:31,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852557785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:31,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:31,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:18:31,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243210681] [2023-08-29 22:18:31,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:31,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:18:31,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:31,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:18:31,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:18:31,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 359 [2023-08-29 22:18:31,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:31,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:31,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 359 [2023-08-29 22:18:31,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:31,559 INFO L130 PetriNetUnfolder]: 148/416 cut-off events. [2023-08-29 22:18:31,559 INFO L131 PetriNetUnfolder]: For 390/392 co-relation queries the response was YES. [2023-08-29 22:18:31,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 416 events. 148/416 cut-off events. For 390/392 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2039 event pairs, 23 based on Foata normal form. 10/414 useless extension candidates. Maximal degree in co-relation 1325. Up to 145 conditions per place. [2023-08-29 22:18:31,562 INFO L137 encePairwiseOnDemand]: 352/359 looper letters, 65 selfloop transitions, 8 changer transitions 1/84 dead transitions. [2023-08-29 22:18:31,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 84 transitions, 559 flow [2023-08-29 22:18:31,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 22:18:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 22:18:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1276 transitions. [2023-08-29 22:18:31,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44428969359331477 [2023-08-29 22:18:31,566 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1276 transitions. [2023-08-29 22:18:31,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1276 transitions. [2023-08-29 22:18:31,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:31,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1276 transitions. [2023-08-29 22:18:31,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:31,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 359.0) internal successors, (3231), 9 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:31,574 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 359.0) internal successors, (3231), 9 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:31,574 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 292 flow. Second operand 8 states and 1276 transitions. [2023-08-29 22:18:31,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 84 transitions, 559 flow [2023-08-29 22:18:31,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 84 transitions, 543 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 22:18:31,578 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 282 flow [2023-08-29 22:18:31,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=282, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2023-08-29 22:18:31,579 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2023-08-29 22:18:31,579 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 282 flow [2023-08-29 22:18:31,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:31,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:31,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:18:31,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 22:18:31,580 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 22:18:31,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:31,581 INFO L85 PathProgramCache]: Analyzing trace with hash -916237437, now seen corresponding path program 1 times [2023-08-29 22:18:31,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:31,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270257542] [2023-08-29 22:18:31,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:31,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:31,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:31,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:31,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270257542] [2023-08-29 22:18:31,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270257542] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:31,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:31,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 22:18:31,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466007187] [2023-08-29 22:18:31,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:31,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 22:18:31,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:31,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 22:18:31,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 22:18:31,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 359 [2023-08-29 22:18:31,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:31,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:31,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 359 [2023-08-29 22:18:31,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:31,767 INFO L130 PetriNetUnfolder]: 148/397 cut-off events. [2023-08-29 22:18:31,767 INFO L131 PetriNetUnfolder]: For 499/509 co-relation queries the response was YES. [2023-08-29 22:18:31,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 397 events. 148/397 cut-off events. For 499/509 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1900 event pairs, 76 based on Foata normal form. 3/384 useless extension candidates. Maximal degree in co-relation 1305. Up to 236 conditions per place. [2023-08-29 22:18:31,769 INFO L137 encePairwiseOnDemand]: 356/359 looper letters, 40 selfloop transitions, 3 changer transitions 14/65 dead transitions. [2023-08-29 22:18:31,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 65 transitions, 462 flow [2023-08-29 22:18:31,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 22:18:31,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 22:18:31,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 650 transitions. [2023-08-29 22:18:31,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45264623955431754 [2023-08-29 22:18:31,772 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 650 transitions. [2023-08-29 22:18:31,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 650 transitions. [2023-08-29 22:18:31,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:31,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 650 transitions. [2023-08-29 22:18:31,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:31,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:31,776 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:31,776 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 282 flow. Second operand 4 states and 650 transitions. [2023-08-29 22:18:31,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 65 transitions, 462 flow [2023-08-29 22:18:31,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 435 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-29 22:18:31,780 INFO L231 Difference]: Finished difference. Result has 65 places, 41 transitions, 228 flow [2023-08-29 22:18:31,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=65, PETRI_TRANSITIONS=41} [2023-08-29 22:18:31,781 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 28 predicate places. [2023-08-29 22:18:31,781 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 41 transitions, 228 flow [2023-08-29 22:18:31,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:31,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:31,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:18:31,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 22:18:31,781 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 22:18:31,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:31,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1158826975, now seen corresponding path program 1 times [2023-08-29 22:18:31,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:31,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607319283] [2023-08-29 22:18:31,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:31,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:31,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:31,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607319283] [2023-08-29 22:18:31,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607319283] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:31,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:31,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 22:18:31,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545234052] [2023-08-29 22:18:31,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:31,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 22:18:31,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:31,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 22:18:31,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-29 22:18:32,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 359 [2023-08-29 22:18:32,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 41 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:32,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:32,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 359 [2023-08-29 22:18:32,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:32,200 INFO L130 PetriNetUnfolder]: 55/182 cut-off events. [2023-08-29 22:18:32,200 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2023-08-29 22:18:32,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 182 events. 55/182 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 682 event pairs, 9 based on Foata normal form. 8/189 useless extension candidates. Maximal degree in co-relation 605. Up to 53 conditions per place. [2023-08-29 22:18:32,202 INFO L137 encePairwiseOnDemand]: 352/359 looper letters, 42 selfloop transitions, 11 changer transitions 2/63 dead transitions. [2023-08-29 22:18:32,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 63 transitions, 443 flow [2023-08-29 22:18:32,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 22:18:32,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 22:18:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1849 transitions. [2023-08-29 22:18:32,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42920148560817084 [2023-08-29 22:18:32,207 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1849 transitions. [2023-08-29 22:18:32,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1849 transitions. [2023-08-29 22:18:32,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:32,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1849 transitions. [2023-08-29 22:18:32,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 154.08333333333334) internal successors, (1849), 12 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:32,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 359.0) internal successors, (4667), 13 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:32,220 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 359.0) internal successors, (4667), 13 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:32,220 INFO L175 Difference]: Start difference. First operand has 65 places, 41 transitions, 228 flow. Second operand 12 states and 1849 transitions. [2023-08-29 22:18:32,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 63 transitions, 443 flow [2023-08-29 22:18:32,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 63 transitions, 426 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 22:18:32,223 INFO L231 Difference]: Finished difference. Result has 68 places, 41 transitions, 239 flow [2023-08-29 22:18:32,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=239, PETRI_PLACES=68, PETRI_TRANSITIONS=41} [2023-08-29 22:18:32,223 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 31 predicate places. [2023-08-29 22:18:32,224 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 41 transitions, 239 flow [2023-08-29 22:18:32,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:32,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:32,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:18:32,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 22:18:32,225 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 22:18:32,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:32,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1236151670, now seen corresponding path program 1 times [2023-08-29 22:18:32,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:32,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996365519] [2023-08-29 22:18:32,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:32,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:32,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:32,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996365519] [2023-08-29 22:18:32,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996365519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:32,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:32,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 22:18:32,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6489863] [2023-08-29 22:18:32,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:32,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 22:18:32,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:32,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 22:18:32,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 22:18:32,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 359 [2023-08-29 22:18:32,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 41 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:32,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:32,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 359 [2023-08-29 22:18:32,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:32,409 INFO L130 PetriNetUnfolder]: 54/179 cut-off events. [2023-08-29 22:18:32,410 INFO L131 PetriNetUnfolder]: For 237/241 co-relation queries the response was YES. [2023-08-29 22:18:32,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 179 events. 54/179 cut-off events. For 237/241 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 648 event pairs, 34 based on Foata normal form. 8/185 useless extension candidates. Maximal degree in co-relation 627. Up to 98 conditions per place. [2023-08-29 22:18:32,411 INFO L137 encePairwiseOnDemand]: 354/359 looper letters, 33 selfloop transitions, 10 changer transitions 7/55 dead transitions. [2023-08-29 22:18:32,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 55 transitions, 401 flow [2023-08-29 22:18:32,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 22:18:32,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 22:18:32,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 657 transitions. [2023-08-29 22:18:32,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4575208913649025 [2023-08-29 22:18:32,413 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 657 transitions. [2023-08-29 22:18:32,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 657 transitions. [2023-08-29 22:18:32,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:32,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 657 transitions. [2023-08-29 22:18:32,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 164.25) internal successors, (657), 4 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:32,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:32,418 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:32,418 INFO L175 Difference]: Start difference. First operand has 68 places, 41 transitions, 239 flow. Second operand 4 states and 657 transitions. [2023-08-29 22:18:32,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 55 transitions, 401 flow [2023-08-29 22:18:32,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 55 transitions, 376 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-29 22:18:32,421 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 240 flow [2023-08-29 22:18:32,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2023-08-29 22:18:32,421 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 27 predicate places. [2023-08-29 22:18:32,422 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 240 flow [2023-08-29 22:18:32,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:32,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:18:32,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:18:32,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 22:18:32,422 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 22:18:32,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:18:32,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1763923622, now seen corresponding path program 1 times [2023-08-29 22:18:32,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:18:32,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661309890] [2023-08-29 22:18:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:18:32,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:18:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:18:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:18:32,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:18:32,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661309890] [2023-08-29 22:18:32,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661309890] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:18:32,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:18:32,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 22:18:32,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334441000] [2023-08-29 22:18:32,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:18:32,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 22:18:32,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:18:32,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 22:18:32,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-29 22:18:32,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 359 [2023-08-29 22:18:32,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:32,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:18:32,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 359 [2023-08-29 22:18:32,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:18:32,752 INFO L130 PetriNetUnfolder]: 22/95 cut-off events. [2023-08-29 22:18:32,756 INFO L131 PetriNetUnfolder]: For 151/151 co-relation queries the response was YES. [2023-08-29 22:18:32,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 95 events. 22/95 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 276 event pairs, 4 based on Foata normal form. 15/110 useless extension candidates. Maximal degree in co-relation 329. Up to 78 conditions per place. [2023-08-29 22:18:32,757 INFO L137 encePairwiseOnDemand]: 356/359 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-08-29 22:18:32,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 42 transitions, 308 flow [2023-08-29 22:18:32,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 22:18:32,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 22:18:32,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2023-08-29 22:18:32,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43454038997214484 [2023-08-29 22:18:32,760 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2023-08-29 22:18:32,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2023-08-29 22:18:32,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:18:32,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2023-08-29 22:18:32,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:32,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:32,764 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:32,764 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 240 flow. Second operand 4 states and 624 transitions. [2023-08-29 22:18:32,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 42 transitions, 308 flow [2023-08-29 22:18:32,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 42 transitions, 281 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-29 22:18:32,766 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-08-29 22:18:32,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-08-29 22:18:32,767 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2023-08-29 22:18:32,767 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-08-29 22:18:32,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:18:32,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2023-08-29 22:18:32,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-08-29 22:18:32,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-08-29 22:18:32,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 10 remaining) [2023-08-29 22:18:32,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2023-08-29 22:18:32,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2023-08-29 22:18:32,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2023-08-29 22:18:32,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 10 remaining) [2023-08-29 22:18:32,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2023-08-29 22:18:32,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2023-08-29 22:18:32,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 22:18:32,772 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:18:32,776 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 22:18:32,776 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 22:18:32,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:18:32 BasicIcfg [2023-08-29 22:18:32,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 22:18:32,778 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 22:18:32,778 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 22:18:32,779 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 22:18:32,779 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:18:22" (3/4) ... [2023-08-29 22:18:32,781 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 22:18:32,785 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-29 22:18:32,788 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-29 22:18:32,789 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-29 22:18:32,789 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 22:18:32,789 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 22:18:32,825 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 22:18:32,825 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 22:18:32,826 INFO L158 Benchmark]: Toolchain (without parser) took 11186.23ms. Allocated memory was 75.5MB in the beginning and 157.3MB in the end (delta: 81.8MB). Free memory was 51.9MB in the beginning and 56.2MB in the end (delta: -4.3MB). Peak memory consumption was 80.0MB. Max. memory is 16.1GB. [2023-08-29 22:18:32,826 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 56.6MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:18:32,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 426.42ms. Allocated memory is still 75.5MB. Free memory was 51.7MB in the beginning and 49.7MB in the end (delta: 2.0MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2023-08-29 22:18:32,827 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.08ms. Allocated memory is still 75.5MB. Free memory was 49.7MB in the beginning and 47.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:18:32,827 INFO L158 Benchmark]: Boogie Preprocessor took 27.53ms. Allocated memory is still 75.5MB. Free memory was 47.4MB in the beginning and 45.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:18:32,827 INFO L158 Benchmark]: RCFGBuilder took 487.44ms. Allocated memory is still 75.5MB. Free memory was 45.7MB in the beginning and 49.6MB in the end (delta: -3.9MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2023-08-29 22:18:32,827 INFO L158 Benchmark]: TraceAbstraction took 10128.44ms. Allocated memory was 75.5MB in the beginning and 157.3MB in the end (delta: 81.8MB). Free memory was 49.0MB in the beginning and 59.3MB in the end (delta: -10.3MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. [2023-08-29 22:18:32,828 INFO L158 Benchmark]: Witness Printer took 47.12ms. Allocated memory is still 157.3MB. Free memory was 59.3MB in the beginning and 56.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 22:18:32,829 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 56.6MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 426.42ms. Allocated memory is still 75.5MB. Free memory was 51.7MB in the beginning and 49.7MB in the end (delta: 2.0MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.08ms. Allocated memory is still 75.5MB. Free memory was 49.7MB in the beginning and 47.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.53ms. Allocated memory is still 75.5MB. Free memory was 47.4MB in the beginning and 45.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 487.44ms. Allocated memory is still 75.5MB. Free memory was 45.7MB in the beginning and 49.6MB in the end (delta: -3.9MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10128.44ms. Allocated memory was 75.5MB in the beginning and 157.3MB in the end (delta: 81.8MB). Free memory was 49.0MB in the beginning and 59.3MB in the end (delta: -10.3MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. * Witness Printer took 47.12ms. Allocated memory is still 157.3MB. Free memory was 59.3MB in the beginning and 56.2MB 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: 5.3s, 166 PlacesBefore, 37 PlacesAfterwards, 171 TransitionsBefore, 37 TransitionsAfterwards, 7296 CoEnabledTransitionPairs, 7 FixpointIterations, 58 TrivialSequentialCompositions, 98 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 5 ChoiceCompositions, 187 TotalNumberOfCompositions, 13032 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6973, independent: 6646, independent conditional: 0, independent unconditional: 6646, dependent: 327, dependent conditional: 0, dependent unconditional: 327, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4100, independent: 4025, independent conditional: 0, independent unconditional: 4025, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6973, independent: 2621, independent conditional: 0, independent unconditional: 2621, dependent: 252, dependent conditional: 0, dependent unconditional: 252, unknown: 4100, unknown conditional: 0, unknown unconditional: 4100] , Statistics on independence cache: Total cache size (in pairs): 109, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 730]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: 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 3 procedures, 236 locations, 10 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: 10.0s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1272 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 926 mSDsluCounter, 293 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 171 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2150 IncrementalHoareTripleChecker+Invalid, 2264 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 122 mSDtfsCounter, 2150 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293occurred in iteration=8, InterpolantAutomatonStates: 77, 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, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 824 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 22:18:32,856 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