./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/dekker.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-atomic/dekker.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b6ef65da122b5f043dc58aac5c98a5417eca7613b00ec724ef2626b8a50d79f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:58:05,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:58:05,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:58:05,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:58:05,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:58:05,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:58:05,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:58:05,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:58:05,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:58:05,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:58:05,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:58:05,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:58:05,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:58:05,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:58:05,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:58:05,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:58:05,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:58:05,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:58:05,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:58:05,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:58:05,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:58:05,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:58:05,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:58:05,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:58:05,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:58:05,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:58:05,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:58:05,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:58:05,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:58:05,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:58:05,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:58:05,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:58:05,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:58:05,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:58:05,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:58:05,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:58:05,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:58:05,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:58:05,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:58:05,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:58:05,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:58:05,922 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:58:05,943 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:58:05,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:58:05,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:58:05,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:58:05,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:58:05,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:58:05,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:58:05,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:58:05,953 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:58:05,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:58:05,954 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:58:05,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:58:05,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:58:05,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:58:05,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:58:05,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:58:05,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:58:05,956 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:58:05,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:58:05,956 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:58:05,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:58:05,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:58:05,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:58:05,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:58:05,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:58:05,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:58:05,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:58:05,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:58:05,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:58:05,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:58:05,958 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:58:05,958 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:58:05,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:58:05,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:58:05,959 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b6ef65da122b5f043dc58aac5c98a5417eca7613b00ec724ef2626b8a50d79f [2021-12-21 14:58:06,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:58:06,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:58:06,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:58:06,149 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:58:06,149 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:58:06,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/dekker.i [2021-12-21 14:58:06,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96bc47297/001b10cc99cc49e9bebcf67e0387059f/FLAGff63efd04 [2021-12-21 14:58:06,546 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:58:06,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/dekker.i [2021-12-21 14:58:06,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96bc47297/001b10cc99cc49e9bebcf67e0387059f/FLAGff63efd04 [2021-12-21 14:58:06,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96bc47297/001b10cc99cc49e9bebcf67e0387059f [2021-12-21 14:58:06,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:58:06,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:58:06,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:58:06,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:58:06,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:58:06,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:58:06" (1/1) ... [2021-12-21 14:58:06,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5972af3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:06, skipping insertion in model container [2021-12-21 14:58:06,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:58:06" (1/1) ... [2021-12-21 14:58:06,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:58:06,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:58:07,075 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-21 14:58:07,141 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/dekker.i[31403,31416] [2021-12-21 14:58:07,145 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/dekker.i[32483,32496] [2021-12-21 14:58:07,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:58:07,153 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:58:07,162 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-21 14:58:07,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/dekker.i[31403,31416] [2021-12-21 14:58:07,176 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/dekker.i[32483,32496] [2021-12-21 14:58:07,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:58:07,200 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:58:07,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:07 WrapperNode [2021-12-21 14:58:07,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:58:07,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:58:07,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:58:07,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:58:07,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:07" (1/1) ... [2021-12-21 14:58:07,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:07" (1/1) ... [2021-12-21 14:58:07,241 INFO L137 Inliner]: procedures = 172, calls = 60, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2021-12-21 14:58:07,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:58:07,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:58:07,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:58:07,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:58:07,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:07" (1/1) ... [2021-12-21 14:58:07,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:07" (1/1) ... [2021-12-21 14:58:07,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:07" (1/1) ... [2021-12-21 14:58:07,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:07" (1/1) ... [2021-12-21 14:58:07,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:07" (1/1) ... [2021-12-21 14:58:07,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:07" (1/1) ... [2021-12-21 14:58:07,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:07" (1/1) ... [2021-12-21 14:58:07,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:58:07,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:58:07,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:58:07,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:58:07,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:07" (1/1) ... [2021-12-21 14:58:07,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:58:07,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:58:07,327 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) [2021-12-21 14:58:07,349 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 [2021-12-21 14:58:07,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 14:58:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-12-21 14:58:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-12-21 14:58:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-12-21 14:58:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-12-21 14:58:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 14:58:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-21 14:58:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:58:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 14:58:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 14:58:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:58:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-21 14:58:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:58:07,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:58:07,355 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-21 14:58:07,417 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:58:07,418 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:58:07,568 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:58:07,572 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:58:07,573 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-21 14:58:07,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:58:07 BoogieIcfgContainer [2021-12-21 14:58:07,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:58:07,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:58:07,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:58:07,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:58:07,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:58:06" (1/3) ... [2021-12-21 14:58:07,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6072b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:58:07, skipping insertion in model container [2021-12-21 14:58:07,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:58:07" (2/3) ... [2021-12-21 14:58:07,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6072b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:58:07, skipping insertion in model container [2021-12-21 14:58:07,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:58:07" (3/3) ... [2021-12-21 14:58:07,590 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2021-12-21 14:58:07,593 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-21 14:58:07,594 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:58:07,594 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:58:07,594 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-21 14:58:07,641 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,641 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,641 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,641 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,642 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,642 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,642 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,642 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,642 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,643 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,643 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,649 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,649 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,650 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,652 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,652 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,652 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,654 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,655 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,655 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,656 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,656 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,656 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,656 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,656 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,657 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,657 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,657 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,665 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,666 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,666 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,666 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,666 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,666 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,667 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,667 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,667 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,667 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,667 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,668 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,668 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,668 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,668 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,668 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,668 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,669 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,669 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,669 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,669 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,670 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,670 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,670 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,670 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,670 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,671 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,671 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,671 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,671 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,671 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,672 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,672 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,672 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,672 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,672 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,672 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,673 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,673 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,673 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,675 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,676 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,681 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,681 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,681 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,681 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,683 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,683 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,683 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,683 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,683 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,684 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 14:58:07,686 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-21 14:58:07,717 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:58:07,721 INFO L339 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 14:58:07,721 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-21 14:58:07,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 106 transitions, 228 flow [2021-12-21 14:58:07,771 INFO L129 PetriNetUnfolder]: 13/104 cut-off events. [2021-12-21 14:58:07,771 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-21 14:58:07,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 104 events. 13/104 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 159 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-12-21 14:58:07,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 106 transitions, 228 flow [2021-12-21 14:58:07,786 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 94 transitions, 197 flow [2021-12-21 14:58:07,808 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-12-21 14:58:07,810 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 14:58:07,810 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 14:58:07,811 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:58:07,811 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-12-21 14:58:07,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:58:07,817 INFO L85 PathProgramCache]: Analyzing trace with hash -941150824, now seen corresponding path program 1 times [2021-12-21 14:58:07,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:58:07,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713639797] [2021-12-21 14:58:07,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:58:07,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:58:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:58:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:58:08,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:58:08,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713639797] [2021-12-21 14:58:08,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713639797] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:58:08,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:58:08,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:58:08,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016976446] [2021-12-21 14:58:08,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:58:08,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:58:08,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:58:08,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:58:08,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:58:08,070 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 106 [2021-12-21 14:58:08,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 14:58:08,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 106 [2021-12-21 14:58:08,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 14:58:08,147 INFO L129 PetriNetUnfolder]: 19/161 cut-off events. [2021-12-21 14:58:08,154 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2021-12-21 14:58:08,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 161 events. 19/161 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 545 event pairs, 4 based on Foata normal form. 27/173 useless extension candidates. Maximal degree in co-relation 163. Up to 24 conditions per place. [2021-12-21 14:58:08,157 INFO L132 encePairwiseOnDemand]: 94/106 looper letters, 11 selfloop transitions, 3 changer transitions 1/91 dead transitions. [2021-12-21 14:58:08,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 222 flow [2021-12-21 14:58:08,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:58:08,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-21 14:58:08,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2021-12-21 14:58:08,172 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9119496855345912 [2021-12-21 14:58:08,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2021-12-21 14:58:08,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2021-12-21 14:58:08,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 14:58:08,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2021-12-21 14:58:08,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,192 INFO L186 Difference]: Start difference. First operand has 88 places, 94 transitions, 197 flow. Second operand 3 states and 290 transitions. [2021-12-21 14:58:08,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 222 flow [2021-12-21 14:58:08,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 215 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-21 14:58:08,200 INFO L242 Difference]: Finished difference. Result has 89 places, 87 transitions, 196 flow [2021-12-21 14:58:08,201 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2021-12-21 14:58:08,203 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2021-12-21 14:58:08,204 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 196 flow [2021-12-21 14:58:08,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,204 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 14:58:08,204 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:58:08,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:58:08,205 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-12-21 14:58:08,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:58:08,206 INFO L85 PathProgramCache]: Analyzing trace with hash -512241507, now seen corresponding path program 1 times [2021-12-21 14:58:08,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:58:08,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914008353] [2021-12-21 14:58:08,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:58:08,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:58:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:58:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:58:08,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:58:08,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914008353] [2021-12-21 14:58:08,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914008353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:58:08,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:58:08,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:58:08,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409904026] [2021-12-21 14:58:08,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:58:08,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:58:08,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:58:08,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:58:08,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:58:08,273 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 106 [2021-12-21 14:58:08,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 14:58:08,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 106 [2021-12-21 14:58:08,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 14:58:08,311 INFO L129 PetriNetUnfolder]: 13/141 cut-off events. [2021-12-21 14:58:08,311 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-12-21 14:58:08,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 141 events. 13/141 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 421 event pairs, 5 based on Foata normal form. 7/141 useless extension candidates. Maximal degree in co-relation 146. Up to 22 conditions per place. [2021-12-21 14:58:08,314 INFO L132 encePairwiseOnDemand]: 102/106 looper letters, 9 selfloop transitions, 2 changer transitions 1/88 dead transitions. [2021-12-21 14:58:08,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 88 transitions, 223 flow [2021-12-21 14:58:08,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:58:08,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-21 14:58:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2021-12-21 14:58:08,317 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8742138364779874 [2021-12-21 14:58:08,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2021-12-21 14:58:08,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2021-12-21 14:58:08,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 14:58:08,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2021-12-21 14:58:08,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,320 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,320 INFO L186 Difference]: Start difference. First operand has 89 places, 87 transitions, 196 flow. Second operand 3 states and 278 transitions. [2021-12-21 14:58:08,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 88 transitions, 223 flow [2021-12-21 14:58:08,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 217 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-21 14:58:08,323 INFO L242 Difference]: Finished difference. Result has 89 places, 87 transitions, 200 flow [2021-12-21 14:58:08,323 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2021-12-21 14:58:08,324 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2021-12-21 14:58:08,324 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 200 flow [2021-12-21 14:58:08,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,325 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 14:58:08,325 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:58:08,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:58:08,326 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-12-21 14:58:08,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:58:08,327 INFO L85 PathProgramCache]: Analyzing trace with hash 348438304, now seen corresponding path program 1 times [2021-12-21 14:58:08,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:58:08,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693571857] [2021-12-21 14:58:08,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:58:08,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:58:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:58:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:58:08,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:58:08,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693571857] [2021-12-21 14:58:08,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693571857] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:58:08,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:58:08,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 14:58:08,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907216507] [2021-12-21 14:58:08,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:58:08,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 14:58:08,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:58:08,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 14:58:08,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 14:58:08,381 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 106 [2021-12-21 14:58:08,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 14:58:08,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 106 [2021-12-21 14:58:08,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 14:58:08,444 INFO L129 PetriNetUnfolder]: 62/314 cut-off events. [2021-12-21 14:58:08,445 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2021-12-21 14:58:08,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 314 events. 62/314 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1518 event pairs, 5 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 345. Up to 45 conditions per place. [2021-12-21 14:58:08,447 INFO L132 encePairwiseOnDemand]: 99/106 looper letters, 15 selfloop transitions, 10 changer transitions 0/100 dead transitions. [2021-12-21 14:58:08,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 100 transitions, 279 flow [2021-12-21 14:58:08,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 14:58:08,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-21 14:58:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 457 transitions. [2021-12-21 14:58:08,449 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8622641509433963 [2021-12-21 14:58:08,449 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 457 transitions. [2021-12-21 14:58:08,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 457 transitions. [2021-12-21 14:58:08,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 14:58:08,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 457 transitions. [2021-12-21 14:58:08,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,452 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,452 INFO L186 Difference]: Start difference. First operand has 89 places, 87 transitions, 200 flow. Second operand 5 states and 457 transitions. [2021-12-21 14:58:08,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 100 transitions, 279 flow [2021-12-21 14:58:08,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 100 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-21 14:58:08,459 INFO L242 Difference]: Finished difference. Result has 95 places, 93 transitions, 255 flow [2021-12-21 14:58:08,459 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=95, PETRI_TRANSITIONS=93} [2021-12-21 14:58:08,461 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 7 predicate places. [2021-12-21 14:58:08,461 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 93 transitions, 255 flow [2021-12-21 14:58:08,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,461 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 14:58:08,461 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:58:08,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:58:08,462 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-12-21 14:58:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:58:08,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1547542394, now seen corresponding path program 2 times [2021-12-21 14:58:08,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:58:08,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394383552] [2021-12-21 14:58:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:58:08,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:58:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:58:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:58:08,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:58:08,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394383552] [2021-12-21 14:58:08,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394383552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:58:08,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:58:08,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 14:58:08,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543186064] [2021-12-21 14:58:08,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:58:08,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 14:58:08,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:58:08,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 14:58:08,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 14:58:08,556 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 106 [2021-12-21 14:58:08,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 93 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 14:58:08,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 106 [2021-12-21 14:58:08,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 14:58:08,630 INFO L129 PetriNetUnfolder]: 103/397 cut-off events. [2021-12-21 14:58:08,631 INFO L130 PetriNetUnfolder]: For 63/64 co-relation queries the response was YES. [2021-12-21 14:58:08,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 397 events. 103/397 cut-off events. For 63/64 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2003 event pairs, 14 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 575. Up to 49 conditions per place. [2021-12-21 14:58:08,633 INFO L132 encePairwiseOnDemand]: 99/106 looper letters, 0 selfloop transitions, 0 changer transitions 101/101 dead transitions. [2021-12-21 14:58:08,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 316 flow [2021-12-21 14:58:08,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 14:58:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-21 14:58:08,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2021-12-21 14:58:08,635 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8603773584905661 [2021-12-21 14:58:08,635 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 456 transitions. [2021-12-21 14:58:08,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 456 transitions. [2021-12-21 14:58:08,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 14:58:08,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 456 transitions. [2021-12-21 14:58:08,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,638 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,638 INFO L186 Difference]: Start difference. First operand has 95 places, 93 transitions, 255 flow. Second operand 5 states and 456 transitions. [2021-12-21 14:58:08,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 316 flow [2021-12-21 14:58:08,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 101 transitions, 310 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-12-21 14:58:08,642 INFO L242 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2021-12-21 14:58:08,642 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2021-12-21 14:58:08,644 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 6 predicate places. [2021-12-21 14:58:08,644 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2021-12-21 14:58:08,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:58:08,647 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-12-21 14:58:08,648 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-12-21 14:58:08,648 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2021-12-21 14:58:08,648 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2021-12-21 14:58:08,649 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-12-21 14:58:08,649 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-12-21 14:58:08,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:58:08,653 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-12-21 14:58:08,655 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-21 14:58:08,655 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 14:58:08,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 02:58:08 BasicIcfg [2021-12-21 14:58:08,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 14:58:08,662 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 14:58:08,662 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 14:58:08,662 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 14:58:08,662 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:58:07" (3/4) ... [2021-12-21 14:58:08,664 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-21 14:58:08,667 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2021-12-21 14:58:08,667 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-12-21 14:58:08,670 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-12-21 14:58:08,670 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-21 14:58:08,670 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-21 14:58:08,670 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-21 14:58:08,694 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 14:58:08,694 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 14:58:08,695 INFO L158 Benchmark]: Toolchain (without parser) took 1772.74ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 79.3MB in the beginning and 98.3MB in the end (delta: -19.1MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2021-12-21 14:58:08,696 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 77.6MB. Free memory was 37.3MB in the beginning and 37.3MB in the end (delta: 25.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 14:58:08,696 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.99ms. Allocated memory is still 115.3MB. Free memory was 79.1MB in the beginning and 80.2MB in the end (delta: -1.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 14:58:08,696 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.38ms. Allocated memory is still 115.3MB. Free memory was 79.7MB in the beginning and 78.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 14:58:08,697 INFO L158 Benchmark]: Boogie Preprocessor took 40.97ms. Allocated memory is still 115.3MB. Free memory was 78.1MB in the beginning and 76.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 14:58:08,698 INFO L158 Benchmark]: RCFGBuilder took 290.61ms. Allocated memory is still 115.3MB. Free memory was 76.5MB in the beginning and 63.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-21 14:58:08,698 INFO L158 Benchmark]: TraceAbstraction took 1085.53ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 63.4MB in the beginning and 101.5MB in the end (delta: -38.0MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2021-12-21 14:58:08,699 INFO L158 Benchmark]: Witness Printer took 32.81ms. Allocated memory is still 138.4MB. Free memory was 101.5MB in the beginning and 98.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 14:58:08,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 77.6MB. Free memory was 37.3MB in the beginning and 37.3MB in the end (delta: 25.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.99ms. Allocated memory is still 115.3MB. Free memory was 79.1MB in the beginning and 80.2MB in the end (delta: -1.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.38ms. Allocated memory is still 115.3MB. Free memory was 79.7MB in the beginning and 78.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.97ms. Allocated memory is still 115.3MB. Free memory was 78.1MB in the beginning and 76.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 290.61ms. Allocated memory is still 115.3MB. Free memory was 76.5MB in the beginning and 63.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1085.53ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 63.4MB in the beginning and 101.5MB in the end (delta: -38.0MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. * Witness Printer took 32.81ms. Allocated memory is still 138.4MB. Free memory was 101.5MB in the beginning and 98.3MB 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: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 138 locations, 6 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: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85 IncrementalHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 36 mSDtfsCounter, 85 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=255occurred in iteration=3, InterpolantAutomatonStates: 16, 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, 0.2s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-21 14:58:08,733 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