./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/condvar.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/condvar.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 08550a9d023a2de1ac334a3445fa7327c26092d061f764efe50453540d837a7a --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:29:55,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:29:55,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:29:55,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:29:55,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:29:55,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:29:55,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:29:55,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:29:55,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:29:55,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:29:55,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:29:55,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:29:55,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:29:55,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:29:55,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:29:55,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:29:55,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:29:55,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:29:55,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:29:55,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:29:55,142 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:29:55,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:29:55,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:29:55,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:29:55,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:29:55,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:29:55,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:29:55,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:29:55,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:29:55,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:29:55,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:29:55,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:29:55,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:29:55,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:29:55,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:29:55,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:29:55,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:29:55,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:29:55,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:29:55,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:29:55,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:29:55,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:29:55,163 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:29:55,192 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:29:55,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:29:55,193 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:29:55,193 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:29:55,194 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:29:55,194 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:29:55,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:29:55,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:29:55,195 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:29:55,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:29:55,196 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:29:55,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:29:55,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:29:55,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:29:55,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:29:55,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:29:55,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:29:55,198 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:29:55,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:29:55,198 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:29:55,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:29:55,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:29:55,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:29:55,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:29:55,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:29:55,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:29:55,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:29:55,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:29:55,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:29:55,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:29:55,201 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:29:55,201 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:29:55,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:29:55,201 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08550a9d023a2de1ac334a3445fa7327c26092d061f764efe50453540d837a7a [2022-07-22 21:29:55,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:29:55,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:29:55,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:29:55,482 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:29:55,486 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:29:55,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/condvar.i [2022-07-22 21:29:55,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2258fbe8f/7931b02d34e34a3d9e1b30ee65a998b4/FLAGe1dfd76e7 [2022-07-22 21:29:55,968 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:29:55,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar.i [2022-07-22 21:29:55,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2258fbe8f/7931b02d34e34a3d9e1b30ee65a998b4/FLAGe1dfd76e7 [2022-07-22 21:29:55,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2258fbe8f/7931b02d34e34a3d9e1b30ee65a998b4 [2022-07-22 21:29:55,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:29:55,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:29:56,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:29:56,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:29:56,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:29:56,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:29:55" (1/1) ... [2022-07-22 21:29:56,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d6e2289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:56, skipping insertion in model container [2022-07-22 21:29:56,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:29:55" (1/1) ... [2022-07-22 21:29:56,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:29:56,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:29:56,143 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 21:29:56,298 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar.i[30458,30471] [2022-07-22 21:29:56,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:29:56,339 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:29:56,353 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 21:29:56,387 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar.i[30458,30471] [2022-07-22 21:29:56,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:29:56,419 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:29:56,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:56 WrapperNode [2022-07-22 21:29:56,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:29:56,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:29:56,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:29:56,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:29:56,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:56" (1/1) ... [2022-07-22 21:29:56,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:56" (1/1) ... [2022-07-22 21:29:56,458 INFO L137 Inliner]: procedures = 169, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-07-22 21:29:56,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:29:56,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:29:56,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:29:56,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:29:56,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:56" (1/1) ... [2022-07-22 21:29:56,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:56" (1/1) ... [2022-07-22 21:29:56,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:56" (1/1) ... [2022-07-22 21:29:56,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:56" (1/1) ... [2022-07-22 21:29:56,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:56" (1/1) ... [2022-07-22 21:29:56,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:56" (1/1) ... [2022-07-22 21:29:56,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:56" (1/1) ... [2022-07-22 21:29:56,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:29:56,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:29:56,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:29:56,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:29:56,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:56" (1/1) ... [2022-07-22 21:29:56,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:29:56,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:29:56,513 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) [2022-07-22 21:29:56,538 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 [2022-07-22 21:29:56,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:29:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:29:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-22 21:29:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:29:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:29:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:29:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:29:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-07-22 21:29:56,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-07-22 21:29:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:29:56,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:29:56,570 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:29:56,697 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:29:56,699 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:29:56,850 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:29:56,856 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:29:56,857 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 21:29:56,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:29:56 BoogieIcfgContainer [2022-07-22 21:29:56,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:29:56,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:29:56,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:29:56,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:29:56,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:29:55" (1/3) ... [2022-07-22 21:29:56,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1a5945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:29:56, skipping insertion in model container [2022-07-22 21:29:56,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:56" (2/3) ... [2022-07-22 21:29:56,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1a5945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:29:56, skipping insertion in model container [2022-07-22 21:29:56,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:29:56" (3/3) ... [2022-07-22 21:29:56,866 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2022-07-22 21:29:56,871 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:29:56,879 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:29:56,879 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:29:56,879 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:29:56,918 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-22 21:29:56,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 78 transitions, 164 flow [2022-07-22 21:29:56,980 INFO L129 PetriNetUnfolder]: 5/77 cut-off events. [2022-07-22 21:29:56,980 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:29:56,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 77 events. 5/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2022-07-22 21:29:56,983 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 78 transitions, 164 flow [2022-07-22 21:29:56,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 70 transitions, 143 flow [2022-07-22 21:29:56,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:29:57,003 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@7aa3ddb3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@745dd9fb [2022-07-22 21:29:57,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-22 21:29:57,019 INFO L129 PetriNetUnfolder]: 4/65 cut-off events. [2022-07-22 21:29:57,019 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:29:57,020 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:29:57,020 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] [2022-07-22 21:29:57,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:29:57,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:29:57,026 INFO L85 PathProgramCache]: Analyzing trace with hash 533595711, now seen corresponding path program 1 times [2022-07-22 21:29:57,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:29:57,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555733348] [2022-07-22 21:29:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:29:57,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:29:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:57,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:29:57,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:29:57,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555733348] [2022-07-22 21:29:57,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555733348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:29:57,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:29:57,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:29:57,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124162547] [2022-07-22 21:29:57,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:29:57,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:29:57,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:29:57,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:29:57,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:29:57,383 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 78 [2022-07-22 21:29:57,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2022-07-22 21:29:57,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:29:57,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 78 [2022-07-22 21:29:57,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:29:57,436 INFO L129 PetriNetUnfolder]: 3/70 cut-off events. [2022-07-22 21:29:57,436 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:29:57,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 70 events. 3/70 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 3/69 useless extension candidates. Maximal degree in co-relation 33. Up to 5 conditions per place. [2022-07-22 21:29:57,438 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 4 selfloop transitions, 2 changer transitions 4/68 dead transitions. [2022-07-22 21:29:57,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 151 flow [2022-07-22 21:29:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:29:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:29:57,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2022-07-22 21:29:57,450 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9316239316239316 [2022-07-22 21:29:57,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2022-07-22 21:29:57,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2022-07-22 21:29:57,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:29:57,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2022-07-22 21:29:57,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2022-07-22 21:29:57,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2022-07-22 21:29:57,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2022-07-22 21:29:57,464 INFO L186 Difference]: Start difference. First operand has 69 places, 70 transitions, 143 flow. Second operand 3 states and 218 transitions. [2022-07-22 21:29:57,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 151 flow [2022-07-22 21:29:57,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:29:57,476 INFO L242 Difference]: Finished difference. Result has 71 places, 63 transitions, 136 flow [2022-07-22 21:29:57,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2022-07-22 21:29:57,481 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, 2 predicate places. [2022-07-22 21:29:57,481 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 136 flow [2022-07-22 21:29:57,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2022-07-22 21:29:57,482 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:29:57,482 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] [2022-07-22 21:29:57,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:29:57,483 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:29:57,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:29:57,488 INFO L85 PathProgramCache]: Analyzing trace with hash 986944085, now seen corresponding path program 1 times [2022-07-22 21:29:57,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:29:57,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731930480] [2022-07-22 21:29:57,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:29:57,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:29:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:29:57,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:29:57,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731930480] [2022-07-22 21:29:57,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731930480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:29:57,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:29:57,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:29:57,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217526946] [2022-07-22 21:29:57,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:29:57,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:29:57,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:29:57,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:29:57,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:29:57,592 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 78 [2022-07-22 21:29:57,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2022-07-22 21:29:57,592 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:29:57,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 78 [2022-07-22 21:29:57,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:29:57,627 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2022-07-22 21:29:57,628 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:29:57,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 67 events. 2/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 43. Up to 9 conditions per place. [2022-07-22 21:29:57,629 INFO L132 encePairwiseOnDemand]: 75/78 looper letters, 10 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2022-07-22 21:29:57,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 168 flow [2022-07-22 21:29:57,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:29:57,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:29:57,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2022-07-22 21:29:57,631 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9017094017094017 [2022-07-22 21:29:57,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2022-07-22 21:29:57,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2022-07-22 21:29:57,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:29:57,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2022-07-22 21:29:57,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2022-07-22 21:29:57,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2022-07-22 21:29:57,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2022-07-22 21:29:57,635 INFO L186 Difference]: Start difference. First operand has 71 places, 63 transitions, 136 flow. Second operand 3 states and 211 transitions. [2022-07-22 21:29:57,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 168 flow [2022-07-22 21:29:57,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:29:57,638 INFO L242 Difference]: Finished difference. Result has 68 places, 64 transitions, 144 flow [2022-07-22 21:29:57,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2022-07-22 21:29:57,639 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2022-07-22 21:29:57,639 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 144 flow [2022-07-22 21:29:57,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2022-07-22 21:29:57,639 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:29:57,640 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] [2022-07-22 21:29:57,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:29:57,640 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:29:57,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:29:57,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1983761035, now seen corresponding path program 1 times [2022-07-22 21:29:57,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:29:57,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123376397] [2022-07-22 21:29:57,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:29:57,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:29:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:29:57,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:29:57,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123376397] [2022-07-22 21:29:57,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123376397] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:29:57,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232199989] [2022-07-22 21:29:57,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:29:57,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:29:57,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:29:57,754 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:29:57,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 21:29:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:57,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 21:29:57,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:29:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:29:57,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:29:58,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:29:58,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232199989] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:29:58,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:29:58,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-07-22 21:29:58,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201715626] [2022-07-22 21:29:58,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:29:58,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:29:58,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:29:58,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:29:58,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:29:58,014 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 78 [2022-07-22 21:29:58,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 144 flow. Second operand has 10 states, 10 states have (on average 67.1) internal successors, (671), 10 states have internal predecessors, (671), 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) [2022-07-22 21:29:58,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:29:58,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 78 [2022-07-22 21:29:58,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:29:58,105 INFO L129 PetriNetUnfolder]: 2/74 cut-off events. [2022-07-22 21:29:58,106 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:29:58,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 74 events. 2/74 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 2/76 useless extension candidates. Maximal degree in co-relation 58. Up to 6 conditions per place. [2022-07-22 21:29:58,107 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 11 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2022-07-22 21:29:58,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 206 flow [2022-07-22 21:29:58,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:29:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:29:58,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 607 transitions. [2022-07-22 21:29:58,112 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8646723646723646 [2022-07-22 21:29:58,112 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 607 transitions. [2022-07-22 21:29:58,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 607 transitions. [2022-07-22 21:29:58,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:29:58,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 607 transitions. [2022-07-22 21:29:58,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.44444444444444) internal successors, (607), 9 states have internal predecessors, (607), 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) [2022-07-22 21:29:58,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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) [2022-07-22 21:29:58,119 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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) [2022-07-22 21:29:58,119 INFO L186 Difference]: Start difference. First operand has 68 places, 64 transitions, 144 flow. Second operand 9 states and 607 transitions. [2022-07-22 21:29:58,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 206 flow [2022-07-22 21:29:58,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:29:58,122 INFO L242 Difference]: Finished difference. Result has 78 places, 70 transitions, 192 flow [2022-07-22 21:29:58,122 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=192, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2022-07-22 21:29:58,122 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, 9 predicate places. [2022-07-22 21:29:58,123 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 192 flow [2022-07-22 21:29:58,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.1) internal successors, (671), 10 states have internal predecessors, (671), 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) [2022-07-22 21:29:58,123 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:29:58,124 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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] [2022-07-22 21:29:58,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 21:29:58,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:29:58,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:29:58,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:29:58,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1097801271, now seen corresponding path program 2 times [2022-07-22 21:29:58,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:29:58,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63582648] [2022-07-22 21:29:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:29:58,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:29:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:29:58,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:29:58,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63582648] [2022-07-22 21:29:58,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63582648] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:29:58,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488994961] [2022-07-22 21:29:58,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 21:29:58,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:29:58,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:29:58,476 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:29:58,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 21:29:58,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 21:29:58,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:29:58,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:29:58,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:29:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:29:58,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:29:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:29:58,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488994961] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:29:58,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:29:58,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-07-22 21:29:58,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385827374] [2022-07-22 21:29:58,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:29:58,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:29:58,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:29:58,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:29:58,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:29:58,772 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 78 [2022-07-22 21:29:58,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 192 flow. Second operand has 18 states, 18 states have (on average 67.27777777777777) internal successors, (1211), 18 states have internal predecessors, (1211), 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) [2022-07-22 21:29:58,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:29:58,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 78 [2022-07-22 21:29:58,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:29:58,997 INFO L129 PetriNetUnfolder]: 2/94 cut-off events. [2022-07-22 21:29:58,998 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-22 21:29:59,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 94 events. 2/94 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 4/98 useless extension candidates. Maximal degree in co-relation 145. Up to 11 conditions per place. [2022-07-22 21:29:59,002 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 19 selfloop transitions, 21 changer transitions 0/94 dead transitions. [2022-07-22 21:29:59,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 94 transitions, 380 flow [2022-07-22 21:29:59,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 21:29:59,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-22 21:29:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1409 transitions. [2022-07-22 21:29:59,010 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8601953601953602 [2022-07-22 21:29:59,010 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1409 transitions. [2022-07-22 21:29:59,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1409 transitions. [2022-07-22 21:29:59,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:29:59,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1409 transitions. [2022-07-22 21:29:59,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.0952380952381) internal successors, (1409), 21 states have internal predecessors, (1409), 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) [2022-07-22 21:29:59,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 78.0) internal successors, (1716), 22 states have internal predecessors, (1716), 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) [2022-07-22 21:29:59,021 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 78.0) internal successors, (1716), 22 states have internal predecessors, (1716), 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) [2022-07-22 21:29:59,022 INFO L186 Difference]: Start difference. First operand has 78 places, 70 transitions, 192 flow. Second operand 21 states and 1409 transitions. [2022-07-22 21:29:59,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 94 transitions, 380 flow [2022-07-22 21:29:59,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 94 transitions, 366 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-07-22 21:29:59,031 INFO L242 Difference]: Finished difference. Result has 102 places, 83 transitions, 316 flow [2022-07-22 21:29:59,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=316, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2022-07-22 21:29:59,032 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, 33 predicate places. [2022-07-22 21:29:59,033 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 316 flow [2022-07-22 21:29:59,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.27777777777777) internal successors, (1211), 18 states have internal predecessors, (1211), 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) [2022-07-22 21:29:59,034 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:29:59,034 INFO L200 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 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] [2022-07-22 21:29:59,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 21:29:59,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-22 21:29:59,254 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:29:59,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:29:59,255 INFO L85 PathProgramCache]: Analyzing trace with hash -468461195, now seen corresponding path program 3 times [2022-07-22 21:29:59,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:29:59,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749794464] [2022-07-22 21:29:59,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:29:59,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:29:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:29:59,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:29:59,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749794464] [2022-07-22 21:29:59,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749794464] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:29:59,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023602201] [2022-07-22 21:29:59,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 21:29:59,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:29:59,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:29:59,472 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:29:59,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 21:29:59,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-22 21:29:59,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 21:29:59,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 21:29:59,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:29:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 21:29:59,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:29:59,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023602201] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:29:59,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:29:59,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2022-07-22 21:29:59,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458009244] [2022-07-22 21:29:59,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:29:59,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:29:59,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:29:59,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:29:59,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-07-22 21:29:59,706 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 78 [2022-07-22 21:29:59,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 83 transitions, 316 flow. Second operand has 7 states, 7 states have (on average 64.28571428571429) internal successors, (450), 7 states have internal predecessors, (450), 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) [2022-07-22 21:29:59,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:29:59,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 78 [2022-07-22 21:29:59,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:29:59,832 INFO L129 PetriNetUnfolder]: 2/92 cut-off events. [2022-07-22 21:29:59,832 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-07-22 21:29:59,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 92 events. 2/92 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 175. Up to 11 conditions per place. [2022-07-22 21:29:59,834 INFO L132 encePairwiseOnDemand]: 70/78 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2022-07-22 21:29:59,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 83 transitions, 382 flow [2022-07-22 21:29:59,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:29:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:29:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 571 transitions. [2022-07-22 21:29:59,836 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8133903133903134 [2022-07-22 21:29:59,836 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 571 transitions. [2022-07-22 21:29:59,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 571 transitions. [2022-07-22 21:29:59,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:29:59,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 571 transitions. [2022-07-22 21:29:59,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.44444444444444) internal successors, (571), 9 states have internal predecessors, (571), 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) [2022-07-22 21:29:59,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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) [2022-07-22 21:29:59,840 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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) [2022-07-22 21:29:59,840 INFO L186 Difference]: Start difference. First operand has 102 places, 83 transitions, 316 flow. Second operand 9 states and 571 transitions. [2022-07-22 21:29:59,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 83 transitions, 382 flow [2022-07-22 21:29:59,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 83 transitions, 358 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-07-22 21:29:59,849 INFO L242 Difference]: Finished difference. Result has 102 places, 0 transitions, 0 flow [2022-07-22 21:29:59,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=102, PETRI_TRANSITIONS=0} [2022-07-22 21:29:59,851 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, 33 predicate places. [2022-07-22 21:29:59,852 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 0 transitions, 0 flow [2022-07-22 21:29:59,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.28571428571429) internal successors, (450), 7 states have internal predecessors, (450), 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) [2022-07-22 21:29:59,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-07-22 21:29:59,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-07-22 21:29:59,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-07-22 21:29:59,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-22 21:30:00,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:30:00,072 INFO L356 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-07-22 21:30:00,076 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-22 21:30:00,076 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:30:00,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:30:00 BasicIcfg [2022-07-22 21:30:00,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:30:00,081 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:30:00,081 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:30:00,082 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:30:00,082 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:29:56" (3/4) ... [2022-07-22 21:30:00,084 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 21:30:00,089 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread [2022-07-22 21:30:00,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-07-22 21:30:00,100 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-07-22 21:30:00,100 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-22 21:30:00,100 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 21:30:00,135 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 21:30:00,135 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:30:00,136 INFO L158 Benchmark]: Toolchain (without parser) took 4141.36ms. Allocated memory was 90.2MB in the beginning and 138.4MB in the end (delta: 48.2MB). Free memory was 51.3MB in the beginning and 96.4MB in the end (delta: -45.1MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2022-07-22 21:30:00,136 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 90.2MB. Free memory was 69.5MB in the beginning and 69.4MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:30:00,137 INFO L158 Benchmark]: CACSL2BoogieTranslator took 416.74ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 51.2MB in the beginning and 84.5MB in the end (delta: -33.3MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2022-07-22 21:30:00,137 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.29ms. Allocated memory is still 113.2MB. Free memory was 84.5MB in the beginning and 82.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:30:00,137 INFO L158 Benchmark]: Boogie Preprocessor took 21.82ms. Allocated memory is still 113.2MB. Free memory was 82.4MB in the beginning and 80.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:30:00,138 INFO L158 Benchmark]: RCFGBuilder took 375.40ms. Allocated memory is still 113.2MB. Free memory was 80.9MB in the beginning and 68.9MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 21:30:00,138 INFO L158 Benchmark]: TraceAbstraction took 3221.04ms. Allocated memory was 113.2MB in the beginning and 138.4MB in the end (delta: 25.2MB). Free memory was 68.3MB in the beginning and 99.4MB in the end (delta: -31.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:30:00,138 INFO L158 Benchmark]: Witness Printer took 54.04ms. Allocated memory is still 138.4MB. Free memory was 99.4MB in the beginning and 96.4MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:30:00,140 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 90.2MB. Free memory was 69.5MB in the beginning and 69.4MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 416.74ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 51.2MB in the beginning and 84.5MB in the end (delta: -33.3MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.29ms. Allocated memory is still 113.2MB. Free memory was 84.5MB in the beginning and 82.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.82ms. Allocated memory is still 113.2MB. Free memory was 82.4MB in the beginning and 80.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 375.40ms. Allocated memory is still 113.2MB. Free memory was 80.9MB in the beginning and 68.9MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3221.04ms. Allocated memory was 113.2MB in the beginning and 138.4MB in the end (delta: 25.2MB). Free memory was 68.3MB in the beginning and 99.4MB in the end (delta: -31.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 54.04ms. Allocated memory is still 138.4MB. Free memory was 99.4MB in the beginning and 96.4MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 706]: 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 3 procedures, 89 locations, 3 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: 3.1s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 163 IncrementalHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 19 mSDtfsCounter, 163 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 392 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=316occurred in iteration=4, InterpolantAutomatonStates: 45, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 529 NumberOfCodeBlocks, 504 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 645 ConstructedInterpolants, 0 QuantifiedInterpolants, 925 SizeOfPredicates, 12 NumberOfNonLiveVariables, 453 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 112/281 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! [2022-07-22 21:30:00,165 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 Result: TRUE