./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/spaghetti.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/weaver/spaghetti.wvr.c -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 7e50ae1d6af13c623583d6a2f949e9597ecd4d402771d52399b9fc659c58a3d1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:21:47,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:21:47,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:21:47,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:21:47,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:21:47,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:21:47,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:21:47,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:21:47,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:21:47,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:21:47,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:21:47,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:21:47,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:21:47,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:21:47,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:21:47,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:21:47,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:21:47,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:21:47,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:21:47,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:21:48,001 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:21:48,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:21:48,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:21:48,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:21:48,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:21:48,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:21:48,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:21:48,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:21:48,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:21:48,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:21:48,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:21:48,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:21:48,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:21:48,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:21:48,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:21:48,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:21:48,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:21:48,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:21:48,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:21:48,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:21:48,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:21:48,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:21:48,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:21:48,049 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:21:48,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:21:48,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:21:48,051 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:21:48,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:21:48,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:21:48,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:21:48,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:21:48,053 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:21:48,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:21:48,054 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:21:48,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:21:48,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:21:48,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:21:48,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:21:48,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:21:48,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:21:48,055 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:21:48,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:21:48,055 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:21:48,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:21:48,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:21:48,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:21:48,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:21:48,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:21:48,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:21:48,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:21:48,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:21:48,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:21:48,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:21:48,058 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:21:48,058 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:21:48,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:21:48,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e50ae1d6af13c623583d6a2f949e9597ecd4d402771d52399b9fc659c58a3d1 [2022-07-13 22:21:48,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:21:48,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:21:48,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:21:48,293 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:21:48,294 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:21:48,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/spaghetti.wvr.c [2022-07-13 22:21:48,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937533686/2fb64b5480bf4502bf4d2dbeea98d7da/FLAGd3d61947f [2022-07-13 22:21:48,764 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:21:48,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/spaghetti.wvr.c [2022-07-13 22:21:48,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937533686/2fb64b5480bf4502bf4d2dbeea98d7da/FLAGd3d61947f [2022-07-13 22:21:49,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937533686/2fb64b5480bf4502bf4d2dbeea98d7da [2022-07-13 22:21:49,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:21:49,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:21:49,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:21:49,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:21:49,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:21:49,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:21:49" (1/1) ... [2022-07-13 22:21:49,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388dae02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:49, skipping insertion in model container [2022-07-13 22:21:49,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:21:49" (1/1) ... [2022-07-13 22:21:49,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:21:49,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:21:49,328 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/weaver/spaghetti.wvr.c[3221,3234] [2022-07-13 22:21:49,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:21:49,339 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:21:49,365 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/weaver/spaghetti.wvr.c[3221,3234] [2022-07-13 22:21:49,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:21:49,381 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:21:49,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:49 WrapperNode [2022-07-13 22:21:49,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:21:49,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:21:49,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:21:49,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:21:49,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:49" (1/1) ... [2022-07-13 22:21:49,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:49" (1/1) ... [2022-07-13 22:21:49,409 INFO L137 Inliner]: procedures = 23, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2022-07-13 22:21:49,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:21:49,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:21:49,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:21:49,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:21:49,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:49" (1/1) ... [2022-07-13 22:21:49,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:49" (1/1) ... [2022-07-13 22:21:49,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:49" (1/1) ... [2022-07-13 22:21:49,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:49" (1/1) ... [2022-07-13 22:21:49,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:49" (1/1) ... [2022-07-13 22:21:49,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:49" (1/1) ... [2022-07-13 22:21:49,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:49" (1/1) ... [2022-07-13 22:21:49,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:21:49,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:21:49,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:21:49,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:21:49,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:49" (1/1) ... [2022-07-13 22:21:49,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:21:49,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:21:49,471 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) [2022-07-13 22:21:49,485 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 [2022-07-13 22:21:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:21:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:21:49,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:21:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:21:49,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:21:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:21:49,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:21:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-13 22:21:49,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-13 22:21:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:21:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:21:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:21:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 22:21:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 22:21:49,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:21:49,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:21:49,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:21:49,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:21:49,507 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:21:49,574 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:21:49,575 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:21:49,807 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:21:49,820 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:21:49,820 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-13 22:21:49,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:21:49 BoogieIcfgContainer [2022-07-13 22:21:49,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:21:49,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:21:49,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:21:49,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:21:49,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:21:49" (1/3) ... [2022-07-13 22:21:49,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528a8d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:21:49, skipping insertion in model container [2022-07-13 22:21:49,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:49" (2/3) ... [2022-07-13 22:21:49,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528a8d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:21:49, skipping insertion in model container [2022-07-13 22:21:49,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:21:49" (3/3) ... [2022-07-13 22:21:49,835 INFO L111 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2022-07-13 22:21:49,840 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:21:49,848 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:21:49,849 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:21:49,849 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:21:49,914 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-13 22:21:49,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 130 places, 126 transitions, 284 flow [2022-07-13 22:21:49,999 INFO L129 PetriNetUnfolder]: 9/122 cut-off events. [2022-07-13 22:21:49,999 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-13 22:21:50,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 122 events. 9/122 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2022-07-13 22:21:50,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 126 transitions, 284 flow [2022-07-13 22:21:50,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 109 transitions, 242 flow [2022-07-13 22:21:50,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:21:50,028 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=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@a885774, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f6a0591 [2022-07-13 22:21:50,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-13 22:21:50,060 INFO L129 PetriNetUnfolder]: 9/108 cut-off events. [2022-07-13 22:21:50,061 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-13 22:21:50,062 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:50,063 INFO L200 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, 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] [2022-07-13 22:21:50,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:21:50,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1361627806, now seen corresponding path program 1 times [2022-07-13 22:21:50,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:50,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88220089] [2022-07-13 22:21:50,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:50,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:50,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:50,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88220089] [2022-07-13 22:21:50,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88220089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:50,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:50,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:21:50,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381365887] [2022-07-13 22:21:50,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:50,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:21:50,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:50,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:21:50,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:21:50,371 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 126 [2022-07-13 22:21:50,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 242 flow. Second operand has 2 states, 2 states have (on average 116.0) internal successors, (232), 2 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:21:50,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:50,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 126 [2022-07-13 22:21:50,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:50,477 INFO L129 PetriNetUnfolder]: 21/137 cut-off events. [2022-07-13 22:21:50,478 INFO L130 PetriNetUnfolder]: For 28/29 co-relation queries the response was YES. [2022-07-13 22:21:50,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 137 events. 21/137 cut-off events. For 28/29 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 236 event pairs, 9 based on Foata normal form. 34/161 useless extension candidates. Maximal degree in co-relation 118. Up to 28 conditions per place. [2022-07-13 22:21:50,483 INFO L132 encePairwiseOnDemand]: 121/126 looper letters, 10 selfloop transitions, 0 changer transitions 1/104 dead transitions. [2022-07-13 22:21:50,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 104 transitions, 252 flow [2022-07-13 22:21:50,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:21:50,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 22:21:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 235 transitions. [2022-07-13 22:21:50,501 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9325396825396826 [2022-07-13 22:21:50,503 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 235 transitions. [2022-07-13 22:21:50,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 235 transitions. [2022-07-13 22:21:50,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:50,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 235 transitions. [2022-07-13 22:21:50,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:21:50,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:21:50,520 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:21:50,522 INFO L186 Difference]: Start difference. First operand has 113 places, 109 transitions, 242 flow. Second operand 2 states and 235 transitions. [2022-07-13 22:21:50,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 104 transitions, 252 flow [2022-07-13 22:21:50,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 236 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-13 22:21:50,530 INFO L242 Difference]: Finished difference. Result has 106 places, 103 transitions, 214 flow [2022-07-13 22:21:50,532 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=214, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2022-07-13 22:21:50,537 INFO L279 CegarLoopForPetriNet]: 113 programPoint places, -7 predicate places. [2022-07-13 22:21:50,537 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 214 flow [2022-07-13 22:21:50,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 116.0) internal successors, (232), 2 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:21:50,538 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:50,538 INFO L200 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, 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] [2022-07-13 22:21:50,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:21:50,539 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:21:50,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:50,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1757291632, now seen corresponding path program 1 times [2022-07-13 22:21:50,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:50,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235592285] [2022-07-13 22:21:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:50,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:50,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:50,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:50,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235592285] [2022-07-13 22:21:50,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235592285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:50,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:50,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:21:50,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381702435] [2022-07-13 22:21:50,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:50,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:21:50,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:50,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:21:50,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:21:50,860 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 126 [2022-07-13 22:21:50,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:21:50,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:50,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 126 [2022-07-13 22:21:50,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:51,272 INFO L129 PetriNetUnfolder]: 960/1945 cut-off events. [2022-07-13 22:21:51,272 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-07-13 22:21:51,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3386 conditions, 1945 events. 960/1945 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12099 event pairs, 257 based on Foata normal form. 1/1920 useless extension candidates. Maximal degree in co-relation 3383. Up to 610 conditions per place. [2022-07-13 22:21:51,289 INFO L132 encePairwiseOnDemand]: 112/126 looper letters, 44 selfloop transitions, 13 changer transitions 12/142 dead transitions. [2022-07-13 22:21:51,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 142 transitions, 438 flow [2022-07-13 22:21:51,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:21:51,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:21:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 604 transitions. [2022-07-13 22:21:51,295 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.798941798941799 [2022-07-13 22:21:51,295 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 604 transitions. [2022-07-13 22:21:51,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 604 transitions. [2022-07-13 22:21:51,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:51,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 604 transitions. [2022-07-13 22:21:51,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.66666666666667) internal successors, (604), 6 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:21:51,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:21:51,302 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:21:51,302 INFO L186 Difference]: Start difference. First operand has 106 places, 103 transitions, 214 flow. Second operand 6 states and 604 transitions. [2022-07-13 22:21:51,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 142 transitions, 438 flow [2022-07-13 22:21:51,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 142 transitions, 438 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:21:51,308 INFO L242 Difference]: Finished difference. Result has 115 places, 113 transitions, 308 flow [2022-07-13 22:21:51,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=308, PETRI_PLACES=115, PETRI_TRANSITIONS=113} [2022-07-13 22:21:51,309 INFO L279 CegarLoopForPetriNet]: 113 programPoint places, 2 predicate places. [2022-07-13 22:21:51,309 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 113 transitions, 308 flow [2022-07-13 22:21:51,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:21:51,309 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:51,310 INFO L200 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, 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] [2022-07-13 22:21:51,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:21:51,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:21:51,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash 323479662, now seen corresponding path program 2 times [2022-07-13 22:21:51,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:51,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813140786] [2022-07-13 22:21:51,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:51,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:51,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:51,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813140786] [2022-07-13 22:21:51,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813140786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:51,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:51,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:21:51,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588449649] [2022-07-13 22:21:51,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:51,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:21:51,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:51,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:21:51,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:21:51,479 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 126 [2022-07-13 22:21:51,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 113 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:21:51,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:51,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 126 [2022-07-13 22:21:51,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:51,821 INFO L129 PetriNetUnfolder]: 1107/2340 cut-off events. [2022-07-13 22:21:51,821 INFO L130 PetriNetUnfolder]: For 1029/1029 co-relation queries the response was YES. [2022-07-13 22:21:51,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5096 conditions, 2340 events. 1107/2340 cut-off events. For 1029/1029 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 16137 event pairs, 320 based on Foata normal form. 1/2277 useless extension candidates. Maximal degree in co-relation 5088. Up to 893 conditions per place. [2022-07-13 22:21:51,833 INFO L132 encePairwiseOnDemand]: 113/126 looper letters, 0 selfloop transitions, 0 changer transitions 154/154 dead transitions. [2022-07-13 22:21:51,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 154 transitions, 630 flow [2022-07-13 22:21:51,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:21:51,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 22:21:51,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 600 transitions. [2022-07-13 22:21:51,837 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7936507936507936 [2022-07-13 22:21:51,837 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 600 transitions. [2022-07-13 22:21:51,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 600 transitions. [2022-07-13 22:21:51,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:51,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 600 transitions. [2022-07-13 22:21:51,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:21:51,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:21:51,841 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:21:51,841 INFO L186 Difference]: Start difference. First operand has 115 places, 113 transitions, 308 flow. Second operand 6 states and 600 transitions. [2022-07-13 22:21:51,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 154 transitions, 630 flow [2022-07-13 22:21:51,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 154 transitions, 628 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-13 22:21:51,847 INFO L242 Difference]: Finished difference. Result has 114 places, 0 transitions, 0 flow [2022-07-13 22:21:51,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=114, PETRI_TRANSITIONS=0} [2022-07-13 22:21:51,849 INFO L279 CegarLoopForPetriNet]: 113 programPoint places, 1 predicate places. [2022-07-13 22:21:51,849 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 0 transitions, 0 flow [2022-07-13 22:21:51,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:21:51,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-13 22:21:51,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-07-13 22:21:51,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-13 22:21:51,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-13 22:21:51,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-07-13 22:21:51,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:21:51,854 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1] [2022-07-13 22:21:51,860 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 22:21:51,860 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 22:21:51,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 10:21:51 BasicIcfg [2022-07-13 22:21:51,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 22:21:51,869 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 22:21:51,869 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 22:21:51,870 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 22:21:51,870 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:21:49" (3/4) ... [2022-07-13 22:21:51,872 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 22:21:51,877 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-13 22:21:51,878 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-13 22:21:51,878 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-07-13 22:21:51,878 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2022-07-13 22:21:51,883 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-07-13 22:21:51,883 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-13 22:21:51,883 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 22:21:51,883 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 22:21:51,921 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 22:21:51,921 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 22:21:51,923 INFO L158 Benchmark]: Toolchain (without parser) took 2773.12ms. Allocated memory was 121.6MB in the beginning and 151.0MB in the end (delta: 29.4MB). Free memory was 85.6MB in the beginning and 72.2MB in the end (delta: 13.4MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. [2022-07-13 22:21:51,924 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 81.8MB. Free memory was 51.7MB in the beginning and 51.7MB in the end (delta: 25.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 22:21:51,924 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.20ms. Allocated memory is still 121.6MB. Free memory was 85.4MB in the beginning and 95.1MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 22:21:51,924 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.77ms. Allocated memory is still 121.6MB. Free memory was 95.1MB in the beginning and 93.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 22:21:51,924 INFO L158 Benchmark]: Boogie Preprocessor took 28.47ms. Allocated memory is still 121.6MB. Free memory was 93.6MB in the beginning and 92.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 22:21:51,925 INFO L158 Benchmark]: RCFGBuilder took 385.49ms. Allocated memory is still 121.6MB. Free memory was 92.4MB in the beginning and 78.9MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-13 22:21:51,925 INFO L158 Benchmark]: TraceAbstraction took 2041.04ms. Allocated memory was 121.6MB in the beginning and 151.0MB in the end (delta: 29.4MB). Free memory was 78.3MB in the beginning and 75.4MB in the end (delta: 3.0MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. [2022-07-13 22:21:51,925 INFO L158 Benchmark]: Witness Printer took 52.27ms. Allocated memory is still 151.0MB. Free memory was 74.3MB in the beginning and 72.2MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 22:21:51,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 81.8MB. Free memory was 51.7MB in the beginning and 51.7MB in the end (delta: 25.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.20ms. Allocated memory is still 121.6MB. Free memory was 85.4MB in the beginning and 95.1MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.77ms. Allocated memory is still 121.6MB. Free memory was 95.1MB in the beginning and 93.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.47ms. Allocated memory is still 121.6MB. Free memory was 93.6MB in the beginning and 92.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 385.49ms. Allocated memory is still 121.6MB. Free memory was 92.4MB in the beginning and 78.9MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2041.04ms. Allocated memory was 121.6MB in the beginning and 151.0MB in the end (delta: 29.4MB). Free memory was 78.3MB in the beginning and 75.4MB in the end (delta: 3.0MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. * Witness Printer took 52.27ms. Allocated memory is still 151.0MB. Free memory was 74.3MB in the beginning and 72.2MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 127]: 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 9 procedures, 160 locations, 5 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: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 192 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 245 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 324 IncrementalHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 61 mSDtfsCounter, 324 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=308occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 251 NumberOfCodeBlocks, 251 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 440 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-13 22:21:51,971 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