./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 23:40:45,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 23:40:45,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 23:40:45,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 23:40:45,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 23:40:45,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 23:40:45,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 23:40:45,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 23:40:45,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 23:40:45,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 23:40:45,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 23:40:45,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 23:40:45,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 23:40:45,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 23:40:45,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 23:40:45,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 23:40:45,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 23:40:45,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 23:40:45,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 23:40:45,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 23:40:45,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 23:40:45,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 23:40:45,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 23:40:45,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 23:40:45,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 23:40:45,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 23:40:45,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 23:40:45,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 23:40:45,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 23:40:45,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 23:40:45,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 23:40:45,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 23:40:45,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 23:40:45,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 23:40:45,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 23:40:45,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 23:40:45,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 23:40:45,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 23:40:45,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 23:40:45,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 23:40:45,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 23:40:45,797 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 23:40:45,835 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 23:40:45,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 23:40:45,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 23:40:45,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 23:40:45,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 23:40:45,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 23:40:45,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 23:40:45,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 23:40:45,838 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 23:40:45,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 23:40:45,839 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 23:40:45,839 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 23:40:45,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 23:40:45,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 23:40:45,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 23:40:45,840 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 23:40:45,840 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 23:40:45,841 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 23:40:45,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 23:40:45,841 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 23:40:45,841 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 23:40:45,841 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 23:40:45,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 23:40:45,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 23:40:45,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 23:40:45,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:40:45,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 23:40:45,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 23:40:45,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 23:40:45,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 23:40:45,843 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 23:40:45,843 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 23:40:45,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 23:40:45,844 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 23:40:45,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 23:40:46,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 23:40:46,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 23:40:46,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 23:40:46,169 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 23:40:46,169 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 23:40:46,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2023-08-29 23:40:47,347 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 23:40:47,549 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 23:40:47,550 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2023-08-29 23:40:47,559 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a191536f/3091b6637c34400285371d60a4a8a9f4/FLAG8ab95d1a6 [2023-08-29 23:40:47,927 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a191536f/3091b6637c34400285371d60a4a8a9f4 [2023-08-29 23:40:47,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 23:40:47,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 23:40:47,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 23:40:47,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 23:40:47,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 23:40:47,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:40:47" (1/1) ... [2023-08-29 23:40:47,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a5de01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:40:47, skipping insertion in model container [2023-08-29 23:40:47,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:40:47" (1/1) ... [2023-08-29 23:40:47,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 23:40:47,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 23:40:48,135 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2023-08-29 23:40:48,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:40:48,151 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 23:40:48,178 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2023-08-29 23:40:48,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:40:48,195 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 23:40:48,195 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 23:40:48,201 INFO L208 MainTranslator]: Completed translation [2023-08-29 23:40:48,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:40:48 WrapperNode [2023-08-29 23:40:48,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 23:40:48,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 23:40:48,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 23:40:48,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 23:40:48,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:40:48" (1/1) ... [2023-08-29 23:40:48,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:40:48" (1/1) ... [2023-08-29 23:40:48,252 INFO L138 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-08-29 23:40:48,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 23:40:48,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 23:40:48,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 23:40:48,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 23:40:48,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:40:48" (1/1) ... [2023-08-29 23:40:48,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:40:48" (1/1) ... [2023-08-29 23:40:48,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:40:48" (1/1) ... [2023-08-29 23:40:48,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:40:48" (1/1) ... [2023-08-29 23:40:48,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:40:48" (1/1) ... [2023-08-29 23:40:48,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:40:48" (1/1) ... [2023-08-29 23:40:48,287 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:40:48" (1/1) ... [2023-08-29 23:40:48,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:40:48" (1/1) ... [2023-08-29 23:40:48,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 23:40:48,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 23:40:48,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 23:40:48,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 23:40:48,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:40:48" (1/1) ... [2023-08-29 23:40:48,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:40:48,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:40:48,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 23:40:48,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 23:40:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 23:40:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 23:40:48,381 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 23:40:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-29 23:40:48,382 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-29 23:40:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-29 23:40:48,382 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-29 23:40:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 23:40:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 23:40:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 23:40:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 23:40:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 23:40:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 23:40:48,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 23:40:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 23:40:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 23:40:48,385 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 23:40:48,489 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 23:40:48,491 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 23:40:48,676 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 23:40:48,697 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 23:40:48,698 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 23:40:48,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:40:48 BoogieIcfgContainer [2023-08-29 23:40:48,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 23:40:48,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 23:40:48,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 23:40:48,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 23:40:48,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:40:47" (1/3) ... [2023-08-29 23:40:48,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7909b713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:40:48, skipping insertion in model container [2023-08-29 23:40:48,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:40:48" (2/3) ... [2023-08-29 23:40:48,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7909b713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:40:48, skipping insertion in model container [2023-08-29 23:40:48,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:40:48" (3/3) ... [2023-08-29 23:40:48,707 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2023-08-29 23:40:48,721 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 23:40:48,721 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-29 23:40:48,721 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 23:40:48,806 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 23:40:48,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 106 transitions, 236 flow [2023-08-29 23:40:48,892 INFO L130 PetriNetUnfolder]: 2/103 cut-off events. [2023-08-29 23:40:48,892 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:40:48,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 2/103 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2023-08-29 23:40:48,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 106 transitions, 236 flow [2023-08-29 23:40:48,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 99 transitions, 216 flow [2023-08-29 23:40:48,909 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 23:40:48,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 99 transitions, 216 flow [2023-08-29 23:40:48,922 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 99 transitions, 216 flow [2023-08-29 23:40:48,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 99 transitions, 216 flow [2023-08-29 23:40:48,978 INFO L130 PetriNetUnfolder]: 2/99 cut-off events. [2023-08-29 23:40:48,978 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:40:48,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 99 events. 2/99 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2023-08-29 23:40:48,980 INFO L119 LiptonReduction]: Number of co-enabled transitions 504 [2023-08-29 23:40:51,966 INFO L134 LiptonReduction]: Checked pairs total: 732 [2023-08-29 23:40:51,966 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-29 23:40:51,987 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 23:40:51,993 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;@640f1b94, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 23:40:51,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 23:40:51,995 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 23:40:51,995 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:40:51,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:40:51,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 23:40:51,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:40:51,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:40:52,000 INFO L85 PathProgramCache]: Analyzing trace with hash 370, now seen corresponding path program 1 times [2023-08-29 23:40:52,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:40:52,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776344962] [2023-08-29 23:40:52,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:40:52,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:40:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:40:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:40:52,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:40:52,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776344962] [2023-08-29 23:40:52,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776344962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:40:52,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:40:52,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 23:40:52,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853651816] [2023-08-29 23:40:52,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:40:52,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 23:40:52,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:40:52,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 23:40:52,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 23:40:52,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 202 [2023-08-29 23:40:52,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:52,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:40:52,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 202 [2023-08-29 23:40:52,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:40:52,237 INFO L130 PetriNetUnfolder]: 81/164 cut-off events. [2023-08-29 23:40:52,237 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 23:40:52,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 164 events. 81/164 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 462 event pairs, 81 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 244. Up to 165 conditions per place. [2023-08-29 23:40:52,241 INFO L137 encePairwiseOnDemand]: 199/202 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-08-29 23:40:52,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2023-08-29 23:40:52,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 23:40:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 23:40:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 219 transitions. [2023-08-29 23:40:52,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5420792079207921 [2023-08-29 23:40:52,253 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 219 transitions. [2023-08-29 23:40:52,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 219 transitions. [2023-08-29 23:40:52,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:40:52,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 219 transitions. [2023-08-29 23:40:52,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 109.5) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:52,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:52,263 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:52,264 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 219 transitions. [2023-08-29 23:40:52,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2023-08-29 23:40:52,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-29 23:40:52,269 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-08-29 23:40:52,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-08-29 23:40:52,273 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-29 23:40:52,274 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-08-29 23:40:52,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:52,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:40:52,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 23:40:52,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 23:40:52,275 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:40:52,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:40:52,276 INFO L85 PathProgramCache]: Analyzing trace with hash 362342, now seen corresponding path program 1 times [2023-08-29 23:40:52,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:40:52,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943987031] [2023-08-29 23:40:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:40:52,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:40:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:40:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:40:52,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:40:52,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943987031] [2023-08-29 23:40:52,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943987031] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:40:52,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:40:52,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:40:52,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179316976] [2023-08-29 23:40:52,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:40:52,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:40:52,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:40:52,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:40:52,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:40:52,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 202 [2023-08-29 23:40:52,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:52,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:40:52,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 202 [2023-08-29 23:40:52,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:40:52,593 INFO L130 PetriNetUnfolder]: 76/153 cut-off events. [2023-08-29 23:40:52,593 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:40:52,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 153 events. 76/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 417 event pairs, 76 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2023-08-29 23:40:52,597 INFO L137 encePairwiseOnDemand]: 199/202 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-29 23:40:52,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2023-08-29 23:40:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:40:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:40:52,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-08-29 23:40:52,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636963696369637 [2023-08-29 23:40:52,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-08-29 23:40:52,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-08-29 23:40:52,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:40:52,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-08-29 23:40:52,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:52,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:52,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:52,611 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 281 transitions. [2023-08-29 23:40:52,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2023-08-29 23:40:52,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 23:40:52,612 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2023-08-29 23:40:52,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-29 23:40:52,613 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-29 23:40:52,613 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2023-08-29 23:40:52,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:52,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:40:52,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 23:40:52,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 23:40:52,614 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:40:52,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:40:52,617 INFO L85 PathProgramCache]: Analyzing trace with hash 362340, now seen corresponding path program 1 times [2023-08-29 23:40:52,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:40:52,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876942817] [2023-08-29 23:40:52,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:40:52,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:40:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:40:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:40:52,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:40:52,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876942817] [2023-08-29 23:40:52,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876942817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:40:52,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:40:52,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:40:52,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735998632] [2023-08-29 23:40:52,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:40:52,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:40:52,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:40:52,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:40:52,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:40:52,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 202 [2023-08-29 23:40:52,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:52,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:40:52,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 202 [2023-08-29 23:40:52,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:40:52,864 INFO L130 PetriNetUnfolder]: 71/142 cut-off events. [2023-08-29 23:40:52,865 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:40:52,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 142 events. 71/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 376 event pairs, 71 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 292. Up to 142 conditions per place. [2023-08-29 23:40:52,866 INFO L137 encePairwiseOnDemand]: 199/202 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-29 23:40:52,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2023-08-29 23:40:52,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:40:52,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:40:52,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-08-29 23:40:52,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48514851485148514 [2023-08-29 23:40:52,868 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-08-29 23:40:52,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-08-29 23:40:52,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:40:52,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-08-29 23:40:52,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:52,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:52,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:52,871 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 294 transitions. [2023-08-29 23:40:52,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2023-08-29 23:40:52,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:40:52,873 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2023-08-29 23:40:52,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-08-29 23:40:52,874 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-29 23:40:52,874 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2023-08-29 23:40:52,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:52,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:40:52,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 23:40:52,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 23:40:52,875 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:40:52,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:40:52,875 INFO L85 PathProgramCache]: Analyzing trace with hash 348217365, now seen corresponding path program 1 times [2023-08-29 23:40:52,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:40:52,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838463635] [2023-08-29 23:40:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:40:52,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:40:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:40:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:40:52,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:40:52,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838463635] [2023-08-29 23:40:52,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838463635] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:40:52,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:40:52,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:40:52,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879741554] [2023-08-29 23:40:52,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:40:52,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:40:52,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:40:52,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:40:52,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:40:52,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 202 [2023-08-29 23:40:52,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:52,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:40:52,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 202 [2023-08-29 23:40:52,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:40:52,996 INFO L130 PetriNetUnfolder]: 66/131 cut-off events. [2023-08-29 23:40:52,997 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:40:52,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 131 events. 66/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 335 event pairs, 66 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 271. Up to 131 conditions per place. [2023-08-29 23:40:52,998 INFO L137 encePairwiseOnDemand]: 199/202 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-08-29 23:40:52,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2023-08-29 23:40:52,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:40:52,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:40:53,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-08-29 23:40:53,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46204620462046203 [2023-08-29 23:40:53,001 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-08-29 23:40:53,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-08-29 23:40:53,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:40:53,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-08-29 23:40:53,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,004 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 280 transitions. [2023-08-29 23:40:53,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2023-08-29 23:40:53,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:40:53,005 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2023-08-29 23:40:53,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-08-29 23:40:53,006 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2023-08-29 23:40:53,006 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2023-08-29 23:40:53,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:40:53,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 23:40:53,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 23:40:53,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:40:53,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:40:53,008 INFO L85 PathProgramCache]: Analyzing trace with hash 348217366, now seen corresponding path program 1 times [2023-08-29 23:40:53,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:40:53,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349440689] [2023-08-29 23:40:53,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:40:53,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:40:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:40:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:40:53,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:40:53,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349440689] [2023-08-29 23:40:53,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349440689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:40:53,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:40:53,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:40:53,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613443799] [2023-08-29 23:40:53,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:40:53,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:40:53,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:40:53,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:40:53,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:40:53,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 202 [2023-08-29 23:40:53,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:40:53,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 202 [2023-08-29 23:40:53,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:40:53,144 INFO L130 PetriNetUnfolder]: 61/120 cut-off events. [2023-08-29 23:40:53,144 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:40:53,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 120 events. 61/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 296 event pairs, 61 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 250. Up to 120 conditions per place. [2023-08-29 23:40:53,146 INFO L137 encePairwiseOnDemand]: 199/202 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-08-29 23:40:53,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2023-08-29 23:40:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:40:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:40:53,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-08-29 23:40:53,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537953795379538 [2023-08-29 23:40:53,148 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-08-29 23:40:53,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-08-29 23:40:53,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:40:53,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-08-29 23:40:53,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,151 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 275 transitions. [2023-08-29 23:40:53,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2023-08-29 23:40:53,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:40:53,152 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2023-08-29 23:40:53,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-29 23:40:53,155 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-29 23:40:53,155 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2023-08-29 23:40:53,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:40:53,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:40:53,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 23:40:53,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:40:53,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:40:53,157 INFO L85 PathProgramCache]: Analyzing trace with hash -370554509, now seen corresponding path program 1 times [2023-08-29 23:40:53,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:40:53,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423905041] [2023-08-29 23:40:53,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:40:53,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:40:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:40:53,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:40:53,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:40:53,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423905041] [2023-08-29 23:40:53,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423905041] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:40:53,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:40:53,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 23:40:53,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796474711] [2023-08-29 23:40:53,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:40:53,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 23:40:53,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:40:53,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 23:40:53,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 23:40:53,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 202 [2023-08-29 23:40:53,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:40:53,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 202 [2023-08-29 23:40:53,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:40:53,503 INFO L130 PetriNetUnfolder]: 49/100 cut-off events. [2023-08-29 23:40:53,504 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:40:53,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 100 events. 49/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 220 event pairs, 49 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 211. Up to 100 conditions per place. [2023-08-29 23:40:53,505 INFO L137 encePairwiseOnDemand]: 200/202 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-29 23:40:53,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2023-08-29 23:40:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:40:53,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:40:53,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2023-08-29 23:40:53,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405940594059406 [2023-08-29 23:40:53,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2023-08-29 23:40:53,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2023-08-29 23:40:53,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:40:53,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2023-08-29 23:40:53,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,510 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 267 transitions. [2023-08-29 23:40:53,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2023-08-29 23:40:53,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:40:53,511 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2023-08-29 23:40:53,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-08-29 23:40:53,512 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-29 23:40:53,512 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2023-08-29 23:40:53,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:40:53,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:40:53,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 23:40:53,513 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:40:53,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:40:53,514 INFO L85 PathProgramCache]: Analyzing trace with hash -370554510, now seen corresponding path program 1 times [2023-08-29 23:40:53,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:40:53,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178232759] [2023-08-29 23:40:53,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:40:53,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:40:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:40:53,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:40:53,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:40:53,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178232759] [2023-08-29 23:40:53,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178232759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:40:53,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:40:53,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 23:40:53,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347096556] [2023-08-29 23:40:53,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:40:53,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:40:53,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:40:53,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:40:53,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:40:53,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 202 [2023-08-29 23:40:53,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:40:53,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 202 [2023-08-29 23:40:53,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:40:53,729 INFO L130 PetriNetUnfolder]: 37/80 cut-off events. [2023-08-29 23:40:53,730 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:40:53,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 80 events. 37/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 80 conditions per place. [2023-08-29 23:40:53,731 INFO L137 encePairwiseOnDemand]: 200/202 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-29 23:40:53,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2023-08-29 23:40:53,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:40:53,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:40:53,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-08-29 23:40:53,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40924092409240925 [2023-08-29 23:40:53,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-08-29 23:40:53,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-08-29 23:40:53,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:40:53,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-08-29 23:40:53,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,735 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,736 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 248 transitions. [2023-08-29 23:40:53,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2023-08-29 23:40:53,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:40:53,737 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2023-08-29 23:40:53,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2023-08-29 23:40:53,737 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-29 23:40:53,738 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2023-08-29 23:40:53,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:53,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:40:53,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:40:53,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 23:40:53,739 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:40:53,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:40:53,739 INFO L85 PathProgramCache]: Analyzing trace with hash -429003188, now seen corresponding path program 1 times [2023-08-29 23:40:53,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:40:53,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657239219] [2023-08-29 23:40:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:40:53,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:40:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:40:54,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:40:54,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:40:54,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657239219] [2023-08-29 23:40:54,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657239219] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:40:54,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:40:54,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 23:40:54,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154315623] [2023-08-29 23:40:54,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:40:54,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:40:54,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:40:54,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:40:54,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:40:54,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 202 [2023-08-29 23:40:54,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:54,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:40:54,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 202 [2023-08-29 23:40:54,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:40:54,192 INFO L130 PetriNetUnfolder]: 36/86 cut-off events. [2023-08-29 23:40:54,192 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-29 23:40:54,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 86 events. 36/86 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 224 event pairs, 1 based on Foata normal form. 1/87 useless extension candidates. Maximal degree in co-relation 185. Up to 31 conditions per place. [2023-08-29 23:40:54,199 INFO L137 encePairwiseOnDemand]: 197/202 looper letters, 22 selfloop transitions, 5 changer transitions 15/42 dead transitions. [2023-08-29 23:40:54,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 42 transitions, 190 flow [2023-08-29 23:40:54,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 23:40:54,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 23:40:54,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 488 transitions. [2023-08-29 23:40:54,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48316831683168315 [2023-08-29 23:40:54,202 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 488 transitions. [2023-08-29 23:40:54,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 488 transitions. [2023-08-29 23:40:54,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:40:54,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 488 transitions. [2023-08-29 23:40:54,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:54,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:54,204 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:54,204 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 5 states and 488 transitions. [2023-08-29 23:40:54,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 42 transitions, 190 flow [2023-08-29 23:40:54,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 42 transitions, 189 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:40:54,205 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 77 flow [2023-08-29 23:40:54,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=77, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-08-29 23:40:54,206 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -6 predicate places. [2023-08-29 23:40:54,206 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 77 flow [2023-08-29 23:40:54,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:54,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:40:54,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:40:54,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 23:40:54,207 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:40:54,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:40:54,207 INFO L85 PathProgramCache]: Analyzing trace with hash -620453902, now seen corresponding path program 2 times [2023-08-29 23:40:54,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:40:54,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207083494] [2023-08-29 23:40:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:40:54,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:40:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:40:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:40:54,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:40:54,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207083494] [2023-08-29 23:40:54,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207083494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:40:54,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:40:54,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 23:40:54,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458158285] [2023-08-29 23:40:54,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:40:54,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:40:54,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:40:54,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:40:54,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:40:54,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 202 [2023-08-29 23:40:54,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:54,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:40:54,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 202 [2023-08-29 23:40:54,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:40:54,591 INFO L130 PetriNetUnfolder]: 25/73 cut-off events. [2023-08-29 23:40:54,592 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-08-29 23:40:54,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 73 events. 25/73 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 180 event pairs, 5 based on Foata normal form. 1/74 useless extension candidates. Maximal degree in co-relation 228. Up to 30 conditions per place. [2023-08-29 23:40:54,592 INFO L137 encePairwiseOnDemand]: 197/202 looper letters, 15 selfloop transitions, 2 changer transitions 20/37 dead transitions. [2023-08-29 23:40:54,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 202 flow [2023-08-29 23:40:54,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 23:40:54,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 23:40:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 483 transitions. [2023-08-29 23:40:54,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782178217821782 [2023-08-29 23:40:54,596 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 483 transitions. [2023-08-29 23:40:54,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 483 transitions. [2023-08-29 23:40:54,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:40:54,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 483 transitions. [2023-08-29 23:40:54,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:54,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:54,599 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:54,599 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 77 flow. Second operand 5 states and 483 transitions. [2023-08-29 23:40:54,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 202 flow [2023-08-29 23:40:54,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 193 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 23:40:54,603 INFO L231 Difference]: Finished difference. Result has 36 places, 16 transitions, 66 flow [2023-08-29 23:40:54,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=36, PETRI_TRANSITIONS=16} [2023-08-29 23:40:54,604 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-08-29 23:40:54,604 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 16 transitions, 66 flow [2023-08-29 23:40:54,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:54,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:40:54,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:40:54,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 23:40:54,606 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:40:54,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:40:54,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1402257370, now seen corresponding path program 3 times [2023-08-29 23:40:54,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:40:54,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022893154] [2023-08-29 23:40:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:40:54,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:40:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:40:54,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:40:54,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:40:54,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022893154] [2023-08-29 23:40:54,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022893154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:40:54,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:40:54,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 23:40:54,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957799941] [2023-08-29 23:40:54,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:40:54,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:40:54,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:40:54,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:40:54,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:40:54,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 202 [2023-08-29 23:40:54,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 16 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:54,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:40:54,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 202 [2023-08-29 23:40:54,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:40:54,959 INFO L130 PetriNetUnfolder]: 8/30 cut-off events. [2023-08-29 23:40:54,959 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-08-29 23:40:54,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 30 events. 8/30 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 1 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 105. Up to 19 conditions per place. [2023-08-29 23:40:54,960 INFO L137 encePairwiseOnDemand]: 197/202 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-08-29 23:40:54,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 21 transitions, 129 flow [2023-08-29 23:40:54,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 23:40:54,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 23:40:54,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 467 transitions. [2023-08-29 23:40:54,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623762376237624 [2023-08-29 23:40:54,962 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 467 transitions. [2023-08-29 23:40:54,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 467 transitions. [2023-08-29 23:40:54,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:40:54,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 467 transitions. [2023-08-29 23:40:54,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.4) internal successors, (467), 5 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 23:40:54,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:54,965 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:54,965 INFO L175 Difference]: Start difference. First operand has 36 places, 16 transitions, 66 flow. Second operand 5 states and 467 transitions. [2023-08-29 23:40:54,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 21 transitions, 129 flow [2023-08-29 23:40:54,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 21 transitions, 105 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-29 23:40:54,967 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-29 23:40:54,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-29 23:40:54,967 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-29 23:40:54,967 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-29 23:40:54,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:40:54,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-08-29 23:40:54,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-08-29 23:40:54,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-08-29 23:40:54,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-08-29 23:40:54,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-08-29 23:40:54,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-08-29 23:40:54,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-08-29 23:40:54,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-08-29 23:40:54,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-08-29 23:40:54,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-08-29 23:40:54,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-08-29 23:40:54,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-08-29 23:40:54,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-08-29 23:40:54,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-08-29 23:40:54,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-08-29 23:40:54,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-08-29 23:40:54,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-08-29 23:40:54,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 23:40:54,975 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:40:54,977 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 23:40:54,978 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 23:40:54,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 11:40:54 BasicIcfg [2023-08-29 23:40:54,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 23:40:54,981 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 23:40:54,981 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 23:40:54,981 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 23:40:54,982 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:40:48" (3/4) ... [2023-08-29 23:40:54,984 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 23:40:54,989 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-29 23:40:54,989 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-29 23:40:54,989 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-29 23:40:54,993 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-08-29 23:40:54,993 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 23:40:54,993 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 23:40:54,994 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 23:40:55,021 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 23:40:55,021 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 23:40:55,021 INFO L158 Benchmark]: Toolchain (without parser) took 7091.81ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 55.1MB in the beginning and 70.9MB in the end (delta: -15.7MB). Peak memory consumption was 41.5MB. Max. memory is 16.1GB. [2023-08-29 23:40:55,022 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 58.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 23:40:55,022 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.62ms. Allocated memory is still 77.6MB. Free memory was 55.0MB in the beginning and 44.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-29 23:40:55,022 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.22ms. Allocated memory is still 77.6MB. Free memory was 44.1MB in the beginning and 42.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 23:40:55,023 INFO L158 Benchmark]: Boogie Preprocessor took 41.49ms. Allocated memory is still 77.6MB. Free memory was 42.5MB in the beginning and 41.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 23:40:55,023 INFO L158 Benchmark]: RCFGBuilder took 404.24ms. Allocated memory is still 77.6MB. Free memory was 41.2MB in the beginning and 45.2MB in the end (delta: -4.0MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2023-08-29 23:40:55,023 INFO L158 Benchmark]: TraceAbstraction took 6278.77ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 44.5MB in the beginning and 74.0MB in the end (delta: -29.6MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2023-08-29 23:40:55,023 INFO L158 Benchmark]: Witness Printer took 40.09ms. Allocated memory is still 136.3MB. Free memory was 74.0MB in the beginning and 70.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 23:40:55,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 58.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.62ms. Allocated memory is still 77.6MB. Free memory was 55.0MB in the beginning and 44.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.22ms. Allocated memory is still 77.6MB. Free memory was 44.1MB in the beginning and 42.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.49ms. Allocated memory is still 77.6MB. Free memory was 42.5MB in the beginning and 41.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 404.24ms. Allocated memory is still 77.6MB. Free memory was 41.2MB in the beginning and 45.2MB in the end (delta: -4.0MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6278.77ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 44.5MB in the beginning and 74.0MB in the end (delta: -29.6MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. * Witness Printer took 40.09ms. Allocated memory is still 136.3MB. Free memory was 74.0MB in the beginning and 70.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 107 PlacesBefore, 39 PlacesAfterwards, 99 TransitionsBefore, 29 TransitionsAfterwards, 504 CoEnabledTransitionPairs, 6 FixpointIterations, 57 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 96 TotalNumberOfCompositions, 732 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 632, independent: 620, independent conditional: 0, independent unconditional: 620, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 278, independent: 276, independent conditional: 0, independent unconditional: 276, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 632, independent: 344, independent conditional: 0, independent unconditional: 344, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 278, unknown conditional: 0, unknown unconditional: 278] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 82]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 63]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 123 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.1s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 649 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 345 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 936 IncrementalHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 18 mSDtfsCounter, 936 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=8, InterpolantAutomatonStates: 35, 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, 1.4s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 1424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 23:40:55,043 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