./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.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 f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:22:40,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:22:40,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:22:40,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:22:40,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:22:40,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:22:40,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:22:40,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:22:40,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:22:40,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:22:40,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:22:40,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:22:40,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:22:40,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:22:40,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:22:40,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:22:40,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:22:40,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:22:40,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:22:40,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:22:40,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:22:40,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:22:40,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:22:40,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:22:40,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:22:40,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:22:40,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:22:40,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:22:40,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:22:40,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:22:40,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:22:40,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:22:40,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:22:40,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:22:40,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:22:40,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:22:40,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:22:40,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:22:40,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:22:40,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:22:40,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:22:40,993 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:22:41,021 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:22:41,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:22:41,023 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:22:41,023 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:22:41,024 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:22:41,024 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:22:41,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:22:41,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:22:41,025 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:22:41,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:22:41,026 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:22:41,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:22:41,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:22:41,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:22:41,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:22:41,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:22:41,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:22:41,027 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:22:41,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:22:41,028 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:22:41,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:22:41,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:22:41,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:22:41,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:22:41,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:22:41,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:22:41,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:22:41,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:22:41,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:22:41,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:22:41,030 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:22:41,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:22:41,030 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:22:41,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:22:41,030 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:22:41,031 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:22:41,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:22:41,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:22:41,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:22:41,374 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:22:41,374 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:22:41,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-08-30 23:22:42,493 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:22:42,755 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:22:42,755 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-08-30 23:22:42,766 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57bbd8de1/bf0f8a47e9124d86b3a622b1de5a8cf4/FLAG711b55050 [2023-08-30 23:22:42,777 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57bbd8de1/bf0f8a47e9124d86b3a622b1de5a8cf4 [2023-08-30 23:22:42,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:22:42,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:22:42,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:22:42,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:22:42,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:22:42,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:22:42" (1/1) ... [2023-08-30 23:22:42,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a9320f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:42, skipping insertion in model container [2023-08-30 23:22:42,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:22:42" (1/1) ... [2023-08-30 23:22:42,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:22:42,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:22:43,064 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i[30003,30016] [2023-08-30 23:22:43,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:22:43,089 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:22:43,117 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i[30003,30016] [2023-08-30 23:22:43,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:22:43,148 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:22:43,148 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:22:43,154 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:22:43,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:43 WrapperNode [2023-08-30 23:22:43,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:22:43,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:22:43,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:22:43,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:22:43,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:43" (1/1) ... [2023-08-30 23:22:43,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:43" (1/1) ... [2023-08-30 23:22:43,218 INFO L138 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 117 [2023-08-30 23:22:43,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:22:43,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:22:43,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:22:43,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:22:43,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:43" (1/1) ... [2023-08-30 23:22:43,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:43" (1/1) ... [2023-08-30 23:22:43,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:43" (1/1) ... [2023-08-30 23:22:43,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:43" (1/1) ... [2023-08-30 23:22:43,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:43" (1/1) ... [2023-08-30 23:22:43,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:43" (1/1) ... [2023-08-30 23:22:43,261 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:43" (1/1) ... [2023-08-30 23:22:43,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:43" (1/1) ... [2023-08-30 23:22:43,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:22:43,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:22:43,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:22:43,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:22:43,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:43" (1/1) ... [2023-08-30 23:22:43,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:22:43,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:22:43,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 23:22:43,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 23:22:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2023-08-30 23:22:43,346 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2023-08-30 23:22:43,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:22:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:22:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:22:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:22:43,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:22:43,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:22:43,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:22:43,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:22:43,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:22:43,351 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 23:22:43,461 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:22:43,463 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:22:43,629 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:22:43,656 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:22:43,656 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 23:22:43,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:22:43 BoogieIcfgContainer [2023-08-30 23:22:43,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:22:43,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:22:43,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:22:43,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:22:43,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:22:42" (1/3) ... [2023-08-30 23:22:43,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd3f1a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:22:43, skipping insertion in model container [2023-08-30 23:22:43,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:43" (2/3) ... [2023-08-30 23:22:43,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd3f1a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:22:43, skipping insertion in model container [2023-08-30 23:22:43,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:22:43" (3/3) ... [2023-08-30 23:22:43,666 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2023-08-30 23:22:43,673 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:22:43,681 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:22:43,682 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 23:22:43,682 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:22:43,793 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 23:22:43,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 103 transitions, 211 flow [2023-08-30 23:22:43,918 INFO L130 PetriNetUnfolder]: 6/102 cut-off events. [2023-08-30 23:22:43,921 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:22:43,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 102 events. 6/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 111 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-08-30 23:22:43,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 103 transitions, 211 flow [2023-08-30 23:22:43,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 102 transitions, 207 flow [2023-08-30 23:22:43,943 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:22:43,960 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 102 transitions, 207 flow [2023-08-30 23:22:43,970 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 102 transitions, 207 flow [2023-08-30 23:22:43,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 102 transitions, 207 flow [2023-08-30 23:22:44,011 INFO L130 PetriNetUnfolder]: 6/102 cut-off events. [2023-08-30 23:22:44,011 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:22:44,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 102 events. 6/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 111 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-08-30 23:22:44,015 INFO L119 LiptonReduction]: Number of co-enabled transitions 2862 [2023-08-30 23:22:46,328 INFO L134 LiptonReduction]: Checked pairs total: 3457 [2023-08-30 23:22:46,328 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-30 23:22:46,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:22:46,356 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e4f91cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:22:46,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-30 23:22:46,365 INFO L130 PetriNetUnfolder]: 1/8 cut-off events. [2023-08-30 23:22:46,365 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:22:46,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:46,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 23:22:46,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 23:22:46,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:46,371 INFO L85 PathProgramCache]: Analyzing trace with hash 12669601, now seen corresponding path program 1 times [2023-08-30 23:22:46,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:46,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363153501] [2023-08-30 23:22:46,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:46,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:46,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:46,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363153501] [2023-08-30 23:22:46,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363153501] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:46,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:46,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:22:46,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907817216] [2023-08-30 23:22:46,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:46,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:22:46,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:46,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:22:46,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:22:46,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 213 [2023-08-30 23:22:46,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 18 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:46,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:46,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 213 [2023-08-30 23:22:46,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:46,673 INFO L130 PetriNetUnfolder]: 89/179 cut-off events. [2023-08-30 23:22:46,673 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:22:46,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 179 events. 89/179 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 641 event pairs, 24 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 348. Up to 89 conditions per place. [2023-08-30 23:22:46,676 INFO L137 encePairwiseOnDemand]: 209/213 looper letters, 17 selfloop transitions, 3 changer transitions 10/31 dead transitions. [2023-08-30 23:22:46,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 31 transitions, 125 flow [2023-08-30 23:22:46,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:22:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:22:46,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2023-08-30 23:22:46,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48982785602503914 [2023-08-30 23:22:46,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2023-08-30 23:22:46,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2023-08-30 23:22:46,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:46,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2023-08-30 23:22:46,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:46,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:46,747 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:46,749 INFO L175 Difference]: Start difference. First operand has 19 places, 18 transitions, 39 flow. Second operand 3 states and 313 transitions. [2023-08-30 23:22:46,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 31 transitions, 125 flow [2023-08-30 23:22:46,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:22:46,752 INFO L231 Difference]: Finished difference. Result has 22 places, 14 transitions, 46 flow [2023-08-30 23:22:46,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2023-08-30 23:22:46,765 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-08-30 23:22:46,766 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 46 flow [2023-08-30 23:22:46,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:46,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:46,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 23:22:46,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:22:46,768 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 23:22:46,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:46,777 INFO L85 PathProgramCache]: Analyzing trace with hash 392715310, now seen corresponding path program 1 times [2023-08-30 23:22:46,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:46,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807621547] [2023-08-30 23:22:46,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:46,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:46,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:46,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807621547] [2023-08-30 23:22:46,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807621547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:46,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:46,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:22:46,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819874352] [2023-08-30 23:22:46,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:46,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:22:46,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:22:46,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:22:46,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 213 [2023-08-30 23:22:46,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 14 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:46,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:46,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 213 [2023-08-30 23:22:46,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:46,906 INFO L130 PetriNetUnfolder]: 34/81 cut-off events. [2023-08-30 23:22:46,906 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 23:22:46,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 81 events. 34/81 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 288 event pairs, 22 based on Foata normal form. 5/77 useless extension candidates. Maximal degree in co-relation 180. Up to 70 conditions per place. [2023-08-30 23:22:46,910 INFO L137 encePairwiseOnDemand]: 211/213 looper letters, 12 selfloop transitions, 0 changer transitions 6/19 dead transitions. [2023-08-30 23:22:46,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 19 transitions, 92 flow [2023-08-30 23:22:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:22:46,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:22:46,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-30 23:22:46,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647887323943662 [2023-08-30 23:22:46,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-30 23:22:46,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-30 23:22:46,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:46,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-30 23:22:46,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:46,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:46,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:46,916 INFO L175 Difference]: Start difference. First operand has 22 places, 14 transitions, 46 flow. Second operand 3 states and 297 transitions. [2023-08-30 23:22:46,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 19 transitions, 92 flow [2023-08-30 23:22:46,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 19 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:22:46,918 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 38 flow [2023-08-30 23:22:46,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2023-08-30 23:22:46,919 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 0 predicate places. [2023-08-30 23:22:46,919 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 38 flow [2023-08-30 23:22:46,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:46,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:46,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 23:22:46,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:22:46,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 23:22:46,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:46,920 INFO L85 PathProgramCache]: Analyzing trace with hash -709760952, now seen corresponding path program 1 times [2023-08-30 23:22:46,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:46,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397626315] [2023-08-30 23:22:46,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:46,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:47,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:47,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397626315] [2023-08-30 23:22:47,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397626315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:47,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:47,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:22:47,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737393407] [2023-08-30 23:22:47,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:47,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:22:47,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:47,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:22:47,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:22:47,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 213 [2023-08-30 23:22:47,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:47,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:47,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 213 [2023-08-30 23:22:47,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:47,081 INFO L130 PetriNetUnfolder]: 18/52 cut-off events. [2023-08-30 23:22:47,081 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 23:22:47,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 52 events. 18/52 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 169 event pairs, 10 based on Foata normal form. 9/55 useless extension candidates. Maximal degree in co-relation 115. Up to 39 conditions per place. [2023-08-30 23:22:47,083 INFO L137 encePairwiseOnDemand]: 210/213 looper letters, 12 selfloop transitions, 2 changer transitions 0/15 dead transitions. [2023-08-30 23:22:47,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 15 transitions, 72 flow [2023-08-30 23:22:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:22:47,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:22:47,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-30 23:22:47,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46322378716744916 [2023-08-30 23:22:47,097 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-30 23:22:47,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-30 23:22:47,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:47,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-30 23:22:47,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:47,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:47,101 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:47,101 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 38 flow. Second operand 3 states and 296 transitions. [2023-08-30 23:22:47,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 15 transitions, 72 flow [2023-08-30 23:22:47,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 70 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 23:22:47,103 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 44 flow [2023-08-30 23:22:47,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-08-30 23:22:47,104 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-08-30 23:22:47,107 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 44 flow [2023-08-30 23:22:47,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:47,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:47,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:47,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:22:47,108 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 23:22:47,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:47,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1571094979, now seen corresponding path program 1 times [2023-08-30 23:22:47,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:47,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948824305] [2023-08-30 23:22:47,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:47,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:47,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:47,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948824305] [2023-08-30 23:22:47,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948824305] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:47,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:47,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:22:47,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547951076] [2023-08-30 23:22:47,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:47,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:22:47,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:47,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:22:47,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:22:47,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 213 [2023-08-30 23:22:47,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:47,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:47,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 213 [2023-08-30 23:22:47,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:47,319 INFO L130 PetriNetUnfolder]: 16/55 cut-off events. [2023-08-30 23:22:47,325 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 23:22:47,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 55 events. 16/55 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 193 event pairs, 4 based on Foata normal form. 5/54 useless extension candidates. Maximal degree in co-relation 133. Up to 27 conditions per place. [2023-08-30 23:22:47,326 INFO L137 encePairwiseOnDemand]: 209/213 looper letters, 11 selfloop transitions, 2 changer transitions 3/17 dead transitions. [2023-08-30 23:22:47,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 88 flow [2023-08-30 23:22:47,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:22:47,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:22:47,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 384 transitions. [2023-08-30 23:22:47,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507042253521127 [2023-08-30 23:22:47,328 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 384 transitions. [2023-08-30 23:22:47,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 384 transitions. [2023-08-30 23:22:47,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:47,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 384 transitions. [2023-08-30 23:22:47,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:47,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:47,332 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:47,332 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 44 flow. Second operand 4 states and 384 transitions. [2023-08-30 23:22:47,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 88 flow [2023-08-30 23:22:47,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:22:47,333 INFO L231 Difference]: Finished difference. Result has 22 places, 12 transitions, 44 flow [2023-08-30 23:22:47,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=44, PETRI_PLACES=22, PETRI_TRANSITIONS=12} [2023-08-30 23:22:47,334 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-08-30 23:22:47,334 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 12 transitions, 44 flow [2023-08-30 23:22:47,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:47,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:47,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:47,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:22:47,335 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 23:22:47,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:47,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1459213691, now seen corresponding path program 1 times [2023-08-30 23:22:47,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:47,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598905013] [2023-08-30 23:22:47,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:47,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:22:47,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:47,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598905013] [2023-08-30 23:22:47,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598905013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:47,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:47,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:22:47,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344893987] [2023-08-30 23:22:47,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:47,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:22:47,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:47,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:22:47,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:22:47,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 213 [2023-08-30 23:22:47,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 12 transitions, 44 flow. Second operand has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:47,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:47,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 213 [2023-08-30 23:22:47,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:47,516 INFO L130 PetriNetUnfolder]: 24/86 cut-off events. [2023-08-30 23:22:47,517 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 23:22:47,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 86 events. 24/86 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 334 event pairs, 12 based on Foata normal form. 2/88 useless extension candidates. Maximal degree in co-relation 223. Up to 47 conditions per place. [2023-08-30 23:22:47,517 INFO L137 encePairwiseOnDemand]: 208/213 looper letters, 19 selfloop transitions, 5 changer transitions 3/27 dead transitions. [2023-08-30 23:22:47,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 146 flow [2023-08-30 23:22:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:22:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:22:47,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 643 transitions. [2023-08-30 23:22:47,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312541918175721 [2023-08-30 23:22:47,521 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 643 transitions. [2023-08-30 23:22:47,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 643 transitions. [2023-08-30 23:22:47,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:47,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 643 transitions. [2023-08-30 23:22:47,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.85714285714286) internal successors, (643), 7 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:47,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 213.0) internal successors, (1704), 8 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:47,527 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 213.0) internal successors, (1704), 8 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:47,527 INFO L175 Difference]: Start difference. First operand has 22 places, 12 transitions, 44 flow. Second operand 7 states and 643 transitions. [2023-08-30 23:22:47,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 146 flow [2023-08-30 23:22:47,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 132 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 23:22:47,528 INFO L231 Difference]: Finished difference. Result has 28 places, 15 transitions, 69 flow [2023-08-30 23:22:47,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=69, PETRI_PLACES=28, PETRI_TRANSITIONS=15} [2023-08-30 23:22:47,529 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 9 predicate places. [2023-08-30 23:22:47,529 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 15 transitions, 69 flow [2023-08-30 23:22:47,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:47,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:47,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:47,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:22:47,530 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 23:22:47,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:47,531 INFO L85 PathProgramCache]: Analyzing trace with hash 16365159, now seen corresponding path program 2 times [2023-08-30 23:22:47,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:47,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153305117] [2023-08-30 23:22:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:47,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 23:22:47,542 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 23:22:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 23:22:47,563 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 23:22:47,564 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 23:22:47,565 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-30 23:22:47,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-30 23:22:47,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 23:22:47,567 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-08-30 23:22:47,572 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:22:47,572 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:22:47,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:22:47 BasicIcfg [2023-08-30 23:22:47,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:22:47,619 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:22:47,619 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:22:47,619 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:22:47,619 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:22:43" (3/4) ... [2023-08-30 23:22:47,621 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 23:22:47,671 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:22:47,672 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:22:47,672 INFO L158 Benchmark]: Toolchain (without parser) took 4892.11ms. Allocated memory was 67.1MB in the beginning and 104.9MB in the end (delta: 37.7MB). Free memory was 32.6MB in the beginning and 49.4MB in the end (delta: -16.8MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2023-08-30 23:22:47,672 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 67.1MB. Free memory is still 44.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:22:47,672 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.48ms. Allocated memory is still 67.1MB. Free memory was 32.4MB in the beginning and 30.3MB in the end (delta: 2.1MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2023-08-30 23:22:47,673 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.88ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 30.1MB in the beginning and 64.5MB in the end (delta: -34.4MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2023-08-30 23:22:47,673 INFO L158 Benchmark]: Boogie Preprocessor took 45.40ms. Allocated memory is still 86.0MB. Free memory was 64.5MB in the beginning and 62.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:22:47,673 INFO L158 Benchmark]: RCFGBuilder took 392.67ms. Allocated memory is still 86.0MB. Free memory was 62.9MB in the beginning and 48.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 23:22:47,673 INFO L158 Benchmark]: TraceAbstraction took 3957.72ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 47.4MB in the beginning and 53.6MB in the end (delta: -6.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 23:22:47,674 INFO L158 Benchmark]: Witness Printer took 53.08ms. Allocated memory is still 104.9MB. Free memory was 53.6MB in the beginning and 49.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 23:22:47,675 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 67.1MB. Free memory is still 44.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 374.48ms. Allocated memory is still 67.1MB. Free memory was 32.4MB in the beginning and 30.3MB in the end (delta: 2.1MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.88ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 30.1MB in the beginning and 64.5MB in the end (delta: -34.4MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.40ms. Allocated memory is still 86.0MB. Free memory was 64.5MB in the beginning and 62.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 392.67ms. Allocated memory is still 86.0MB. Free memory was 62.9MB in the beginning and 48.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3957.72ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 47.4MB in the beginning and 53.6MB in the end (delta: -6.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 53.08ms. Allocated memory is still 104.9MB. Free memory was 53.6MB in the beginning and 49.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 100 PlacesBefore, 19 PlacesAfterwards, 102 TransitionsBefore, 18 TransitionsAfterwards, 2862 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 3 ChoiceCompositions, 110 TotalNumberOfCompositions, 3457 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2820, independent: 2736, independent conditional: 0, independent unconditional: 2736, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1759, independent: 1726, independent conditional: 0, independent unconditional: 1726, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2820, independent: 1010, independent conditional: 0, independent unconditional: 1010, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 1759, unknown conditional: 0, unknown unconditional: 1759] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L756] 0 pthread_t t; [L757] 0 pendingIo = 1 [L758] 0 stoppingFlag = 0 [L759] 0 stoppingEvent = 0 [L760] 0 stopped = 0 [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, pthread_create(&t, 0, BCSP_PnpStop, 0)=-1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; [L726] CALL, EXPR 1 dec() [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; [L722] 1 return tmp; [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() [L727] COND TRUE 1 pending == 0 [L729] 1 stoppingEvent = 1 [L747] RET 1 BCSP_IoDecrement() [L709] 0 int lp = pendingIo; VAL [lp=0, lsf=0, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L749] 1 int lse = stoppingEvent; [L751] CALL 1 assume_abort_if_not(lse) [L712] 0 pendingIo = lp + 1 [L715] 0 return 0; [L735] RET, EXPR 0 BCSP_IoIncrement() [L735] 0 status = BCSP_IoIncrement() [L686] COND FALSE 1 !(!cond) [L751] RET 1 assume_abort_if_not(lse) [L752] 1 stopped = 1 [L753] 1 return 0; [L736] COND TRUE 0 status == 0 [L737] 0 int local_assertion = !stopped; [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) [L690] 0 reach_error() VAL [\old(cond)=0, cond=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 125 locations, 2 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: 3.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 255 IncrementalHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 6 mSDtfsCounter, 255 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=5, InterpolantAutomatonStates: 20, 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, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 113 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-30 23:22:47,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE