./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 c3fed411 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-tmp.no-commuhash-c3fed41 [2021-12-17 22:25:33,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 22:25:33,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 22:25:33,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 22:25:33,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 22:25:33,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 22:25:33,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 22:25:33,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 22:25:33,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 22:25:33,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 22:25:33,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 22:25:33,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 22:25:33,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 22:25:33,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 22:25:33,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 22:25:33,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 22:25:33,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 22:25:33,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 22:25:33,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 22:25:33,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 22:25:33,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 22:25:33,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 22:25:33,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 22:25:33,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 22:25:33,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 22:25:33,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 22:25:33,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 22:25:33,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 22:25:33,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 22:25:33,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 22:25:33,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 22:25:33,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 22:25:33,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 22:25:33,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 22:25:33,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 22:25:33,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 22:25:33,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 22:25:33,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 22:25:33,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 22:25:33,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 22:25:33,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 22:25:33,138 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 22:25:33,159 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 22:25:33,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 22:25:33,159 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 22:25:33,160 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 22:25:33,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 22:25:33,160 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 22:25:33,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 22:25:33,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 22:25:33,161 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 22:25:33,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 22:25:33,162 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 22:25:33,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 22:25:33,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 22:25:33,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 22:25:33,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 22:25:33,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 22:25:33,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 22:25:33,163 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 22:25:33,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 22:25:33,163 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 22:25:33,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 22:25:33,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 22:25:33,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 22:25:33,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 22:25:33,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:25:33,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 22:25:33,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 22:25:33,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 22:25:33,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 22:25:33,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 22:25:33,165 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 22:25:33,165 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 22:25:33,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 22:25:33,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 22:25:33,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08550a9d023a2de1ac334a3445fa7327c26092d061f764efe50453540d837a7a [2021-12-17 22:25:33,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 22:25:33,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 22:25:33,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 22:25:33,347 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 22:25:33,351 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 22:25:33,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/condvar.i [2021-12-17 22:25:33,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a7f24f56/f98cbbe11cdf458da0486c08908c7cdb/FLAGe61914568 [2021-12-17 22:25:33,730 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 22:25:33,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar.i [2021-12-17 22:25:33,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a7f24f56/f98cbbe11cdf458da0486c08908c7cdb/FLAGe61914568 [2021-12-17 22:25:34,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a7f24f56/f98cbbe11cdf458da0486c08908c7cdb [2021-12-17 22:25:34,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 22:25:34,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 22:25:34,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 22:25:34,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 22:25:34,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 22:25:34,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:25:34" (1/1) ... [2021-12-17 22:25:34,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b443c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:25:34, skipping insertion in model container [2021-12-17 22:25:34,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:25:34" (1/1) ... [2021-12-17 22:25:34,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 22:25:34,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 22:25:34,289 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-17 22:25:34,429 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] [2021-12-17 22:25:34,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:25:34,447 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 22:25:34,458 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-17 22:25:34,480 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] [2021-12-17 22:25:34,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:25:34,523 INFO L208 MainTranslator]: Completed translation [2021-12-17 22:25:34,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:25:34 WrapperNode [2021-12-17 22:25:34,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 22:25:34,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 22:25:34,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 22:25:34,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 22:25:34,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:25:34" (1/1) ... [2021-12-17 22:25:34,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:25:34" (1/1) ... [2021-12-17 22:25:34,573 INFO L137 Inliner]: procedures = 169, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2021-12-17 22:25:34,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 22:25:34,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 22:25:34,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 22:25:34,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 22:25:34,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:25:34" (1/1) ... [2021-12-17 22:25:34,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:25:34" (1/1) ... [2021-12-17 22:25:34,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:25:34" (1/1) ... [2021-12-17 22:25:34,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:25:34" (1/1) ... [2021-12-17 22:25:34,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:25:34" (1/1) ... [2021-12-17 22:25:34,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:25:34" (1/1) ... [2021-12-17 22:25:34,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:25:34" (1/1) ... [2021-12-17 22:25:34,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 22:25:34,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 22:25:34,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 22:25:34,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 22:25:34,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:25:34" (1/1) ... [2021-12-17 22:25:34,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:25:34,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:25:34,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 22:25:34,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 22:25:34,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 22:25:34,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 22:25:34,682 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-17 22:25:34,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 22:25:34,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 22:25:34,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 22:25:34,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 22:25:34,683 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-12-17 22:25:34,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-12-17 22:25:34,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 22:25:34,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 22:25:34,684 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 22:25:34,768 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 22:25:34,769 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 22:25:34,881 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 22:25:34,886 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 22:25:34,886 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-17 22:25:34,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:25:34 BoogieIcfgContainer [2021-12-17 22:25:34,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 22:25:34,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 22:25:34,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 22:25:34,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 22:25:34,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:25:34" (1/3) ... [2021-12-17 22:25:34,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290236bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:25:34, skipping insertion in model container [2021-12-17 22:25:34,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:25:34" (2/3) ... [2021-12-17 22:25:34,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290236bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:25:34, skipping insertion in model container [2021-12-17 22:25:34,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:25:34" (3/3) ... [2021-12-17 22:25:34,893 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2021-12-17 22:25:34,896 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 22:25:34,896 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 22:25:34,896 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 22:25:34,896 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 22:25:34,911 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,912 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,912 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,912 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,912 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,912 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,912 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,912 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,913 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,913 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,913 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,913 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,914 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,914 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,914 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,914 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,914 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,914 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,915 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,915 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,917 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,917 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,917 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,917 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,917 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,918 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:25:34,922 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-12-17 22:25:34,951 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:25:34,956 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 22:25:34,956 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-17 22:25:34,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 78 transitions, 164 flow [2021-12-17 22:25:34,987 INFO L129 PetriNetUnfolder]: 5/77 cut-off events. [2021-12-17 22:25:34,988 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-17 22:25:34,990 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 62 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. [2021-12-17 22:25:34,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 78 transitions, 164 flow [2021-12-17 22:25:34,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 70 transitions, 143 flow [2021-12-17 22:25:35,019 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2021-12-17 22:25:35,022 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:25:35,022 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:25:35,023 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:25:35,023 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 22:25:35,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:25:35,029 INFO L85 PathProgramCache]: Analyzing trace with hash 533595711, now seen corresponding path program 1 times [2021-12-17 22:25:35,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:25:35,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425794267] [2021-12-17 22:25:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:25:35,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:25:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:25:35,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:25:35,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:25:35,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425794267] [2021-12-17 22:25:35,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425794267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:25:35,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:25:35,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 22:25:35,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467454495] [2021-12-17 22:25:35,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:25:35,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:25:35,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:25:35,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:25:35,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:25:35,320 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 78 [2021-12-17 22:25:35,324 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) [2021-12-17 22:25:35,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:25:35,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 78 [2021-12-17 22:25:35,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:25:35,370 INFO L129 PetriNetUnfolder]: 3/70 cut-off events. [2021-12-17 22:25:35,370 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-17 22:25:35,372 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 48 event pairs, 0 based on Foata normal form. 3/70 useless extension candidates. Maximal degree in co-relation 33. Up to 5 conditions per place. [2021-12-17 22:25:35,373 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 4 selfloop transitions, 2 changer transitions 4/68 dead transitions. [2021-12-17 22:25:35,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 151 flow [2021-12-17 22:25:35,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:25:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:25:35,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2021-12-17 22:25:35,383 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9316239316239316 [2021-12-17 22:25:35,384 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2021-12-17 22:25:35,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2021-12-17 22:25:35,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:25:35,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2021-12-17 22:25:35,391 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) [2021-12-17 22:25:35,398 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) [2021-12-17 22:25:35,398 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) [2021-12-17 22:25:35,400 INFO L186 Difference]: Start difference. First operand has 69 places, 70 transitions, 143 flow. Second operand 3 states and 218 transitions. [2021-12-17 22:25:35,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 151 flow [2021-12-17 22:25:35,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 22:25:35,410 INFO L242 Difference]: Finished difference. Result has 71 places, 63 transitions, 136 flow [2021-12-17 22:25:35,411 INFO L317 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} [2021-12-17 22:25:35,414 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, 2 predicate places. [2021-12-17 22:25:35,414 INFO L470 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 136 flow [2021-12-17 22:25:35,414 INFO L471 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) [2021-12-17 22:25:35,414 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:25:35,414 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:25:35,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 22:25:35,414 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 22:25:35,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:25:35,415 INFO L85 PathProgramCache]: Analyzing trace with hash 986944085, now seen corresponding path program 1 times [2021-12-17 22:25:35,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:25:35,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909511884] [2021-12-17 22:25:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:25:35,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:25:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:25:35,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:25:35,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:25:35,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909511884] [2021-12-17 22:25:35,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909511884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:25:35,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:25:35,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 22:25:35,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956540809] [2021-12-17 22:25:35,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:25:35,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:25:35,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:25:35,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:25:35,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:25:35,471 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 78 [2021-12-17 22:25:35,472 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) [2021-12-17 22:25:35,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:25:35,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 78 [2021-12-17 22:25:35,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:25:35,503 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2021-12-17 22:25:35,503 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-17 22:25:35,503 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 22 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. [2021-12-17 22:25:35,503 INFO L132 encePairwiseOnDemand]: 75/78 looper letters, 10 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2021-12-17 22:25:35,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 168 flow [2021-12-17 22:25:35,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:25:35,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:25:35,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2021-12-17 22:25:35,509 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9017094017094017 [2021-12-17 22:25:35,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2021-12-17 22:25:35,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2021-12-17 22:25:35,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:25:35,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2021-12-17 22:25:35,511 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) [2021-12-17 22:25:35,513 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) [2021-12-17 22:25:35,513 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) [2021-12-17 22:25:35,513 INFO L186 Difference]: Start difference. First operand has 71 places, 63 transitions, 136 flow. Second operand 3 states and 211 transitions. [2021-12-17 22:25:35,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 168 flow [2021-12-17 22:25:35,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-17 22:25:35,516 INFO L242 Difference]: Finished difference. Result has 68 places, 64 transitions, 144 flow [2021-12-17 22:25:35,517 INFO L317 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} [2021-12-17 22:25:35,518 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2021-12-17 22:25:35,519 INFO L470 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 144 flow [2021-12-17 22:25:35,519 INFO L471 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) [2021-12-17 22:25:35,519 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:25:35,519 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:25:35,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 22:25:35,520 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 22:25:35,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:25:35,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1983761035, now seen corresponding path program 1 times [2021-12-17 22:25:35,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:25:35,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758331216] [2021-12-17 22:25:35,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:25:35,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:25:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:25:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:25:35,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:25:35,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758331216] [2021-12-17 22:25:35,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758331216] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 22:25:35,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421029144] [2021-12-17 22:25:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:25:35,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 22:25:35,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:25:35,574 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) [2021-12-17 22:25:35,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 22:25:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:25:35,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 22:25:35,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 22:25:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:25:35,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 22:25:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:25:35,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421029144] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 22:25:35,960 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 22:25:35,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-17 22:25:35,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406434504] [2021-12-17 22:25:35,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 22:25:35,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:25:35,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:25:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:25:35,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:25:35,963 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 78 [2021-12-17 22:25:35,964 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) [2021-12-17 22:25:35,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:25:35,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 78 [2021-12-17 22:25:35,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:25:36,036 INFO L129 PetriNetUnfolder]: 2/74 cut-off events. [2021-12-17 22:25:36,036 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-17 22:25:36,038 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 15 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. [2021-12-17 22:25:36,039 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 11 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2021-12-17 22:25:36,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 206 flow [2021-12-17 22:25:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 22:25:36,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-17 22:25:36,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 607 transitions. [2021-12-17 22:25:36,041 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8646723646723646 [2021-12-17 22:25:36,041 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 607 transitions. [2021-12-17 22:25:36,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 607 transitions. [2021-12-17 22:25:36,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:25:36,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 607 transitions. [2021-12-17 22:25:36,043 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) [2021-12-17 22:25:36,044 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) [2021-12-17 22:25:36,045 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) [2021-12-17 22:25:36,045 INFO L186 Difference]: Start difference. First operand has 68 places, 64 transitions, 144 flow. Second operand 9 states and 607 transitions. [2021-12-17 22:25:36,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 206 flow [2021-12-17 22:25:36,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 22:25:36,048 INFO L242 Difference]: Finished difference. Result has 78 places, 70 transitions, 192 flow [2021-12-17 22:25:36,048 INFO L317 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} [2021-12-17 22:25:36,049 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, 9 predicate places. [2021-12-17 22:25:36,050 INFO L470 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 192 flow [2021-12-17 22:25:36,050 INFO L471 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) [2021-12-17 22:25:36,050 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:25:36,051 INFO L254 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] [2021-12-17 22:25:36,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 22:25:36,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 22:25:36,268 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 22:25:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:25:36,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1097801271, now seen corresponding path program 2 times [2021-12-17 22:25:36,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:25:36,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959532806] [2021-12-17 22:25:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:25:36,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:25:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:25:36,360 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:25:36,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:25:36,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959532806] [2021-12-17 22:25:36,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959532806] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 22:25:36,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426174313] [2021-12-17 22:25:36,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 22:25:36,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 22:25:36,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:25:36,380 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) [2021-12-17 22:25:36,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 22:25:36,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 22:25:36,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 22:25:36,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 22:25:36,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 22:25:36,565 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:25:36,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 22:25:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:25:36,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426174313] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 22:25:36,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 22:25:36,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2021-12-17 22:25:36,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315322815] [2021-12-17 22:25:36,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 22:25:36,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-17 22:25:36,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:25:36,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-17 22:25:36,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-12-17 22:25:36,719 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 78 [2021-12-17 22:25:36,721 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) [2021-12-17 22:25:36,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:25:36,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 78 [2021-12-17 22:25:36,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:25:36,875 INFO L129 PetriNetUnfolder]: 2/94 cut-off events. [2021-12-17 22:25:36,875 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2021-12-17 22:25:36,876 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 15 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. [2021-12-17 22:25:36,877 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 19 selfloop transitions, 21 changer transitions 0/94 dead transitions. [2021-12-17 22:25:36,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 94 transitions, 380 flow [2021-12-17 22:25:36,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 22:25:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-17 22:25:36,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1409 transitions. [2021-12-17 22:25:36,880 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8601953601953602 [2021-12-17 22:25:36,880 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1409 transitions. [2021-12-17 22:25:36,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1409 transitions. [2021-12-17 22:25:36,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:25:36,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1409 transitions. [2021-12-17 22:25:36,883 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) [2021-12-17 22:25:36,885 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) [2021-12-17 22:25:36,885 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) [2021-12-17 22:25:36,885 INFO L186 Difference]: Start difference. First operand has 78 places, 70 transitions, 192 flow. Second operand 21 states and 1409 transitions. [2021-12-17 22:25:36,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 94 transitions, 380 flow [2021-12-17 22:25:36,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 94 transitions, 366 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-12-17 22:25:36,888 INFO L242 Difference]: Finished difference. Result has 102 places, 83 transitions, 316 flow [2021-12-17 22:25:36,889 INFO L317 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} [2021-12-17 22:25:36,889 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, 33 predicate places. [2021-12-17 22:25:36,889 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 316 flow [2021-12-17 22:25:36,890 INFO L471 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) [2021-12-17 22:25:36,890 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:25:36,890 INFO L254 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] [2021-12-17 22:25:36,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 22:25:37,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-17 22:25:37,104 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 22:25:37,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:25:37,104 INFO L85 PathProgramCache]: Analyzing trace with hash -468461195, now seen corresponding path program 3 times [2021-12-17 22:25:37,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:25:37,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380504893] [2021-12-17 22:25:37,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:25:37,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:25:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:25:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:25:37,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:25:37,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380504893] [2021-12-17 22:25:37,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380504893] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 22:25:37,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176908819] [2021-12-17 22:25:37,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 22:25:37,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 22:25:37,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:25:37,273 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) [2021-12-17 22:25:37,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 22:25:37,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-17 22:25:37,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 22:25:37,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-17 22:25:37,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 22:25:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-17 22:25:37,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 22:25:37,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176908819] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:25:37,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 22:25:37,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2021-12-17 22:25:37,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853671776] [2021-12-17 22:25:37,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:25:37,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 22:25:37,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:25:37,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 22:25:37,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-12-17 22:25:37,540 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 78 [2021-12-17 22:25:37,540 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) [2021-12-17 22:25:37,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:25:37,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 78 [2021-12-17 22:25:37,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:25:37,618 INFO L129 PetriNetUnfolder]: 2/92 cut-off events. [2021-12-17 22:25:37,618 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2021-12-17 22:25:37,619 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 15 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. [2021-12-17 22:25:37,619 INFO L132 encePairwiseOnDemand]: 70/78 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2021-12-17 22:25:37,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 83 transitions, 382 flow [2021-12-17 22:25:37,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 22:25:37,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-17 22:25:37,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 571 transitions. [2021-12-17 22:25:37,621 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8133903133903134 [2021-12-17 22:25:37,621 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 571 transitions. [2021-12-17 22:25:37,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 571 transitions. [2021-12-17 22:25:37,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:25:37,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 571 transitions. [2021-12-17 22:25:37,622 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) [2021-12-17 22:25:37,623 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) [2021-12-17 22:25:37,623 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) [2021-12-17 22:25:37,624 INFO L186 Difference]: Start difference. First operand has 102 places, 83 transitions, 316 flow. Second operand 9 states and 571 transitions. [2021-12-17 22:25:37,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 83 transitions, 382 flow [2021-12-17 22:25:37,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 83 transitions, 358 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-12-17 22:25:37,626 INFO L242 Difference]: Finished difference. Result has 102 places, 0 transitions, 0 flow [2021-12-17 22:25:37,627 INFO L317 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} [2021-12-17 22:25:37,627 INFO L334 CegarLoopForPetriNet]: 69 programPoint places, 33 predicate places. [2021-12-17 22:25:37,627 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 0 transitions, 0 flow [2021-12-17 22:25:37,628 INFO L471 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) [2021-12-17 22:25:37,629 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2021-12-17 22:25:37,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-12-17 22:25:37,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-12-17 22:25:37,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 22:25:37,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 22:25:37,846 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2021-12-17 22:25:37,849 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-17 22:25:37,849 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 22:25:37,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 10:25:37 BasicIcfg [2021-12-17 22:25:37,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 22:25:37,852 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 22:25:37,852 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 22:25:37,852 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 22:25:37,852 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:25:34" (3/4) ... [2021-12-17 22:25:37,854 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 22:25:37,858 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread [2021-12-17 22:25:37,860 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-12-17 22:25:37,860 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-12-17 22:25:37,860 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-17 22:25:37,860 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 22:25:37,885 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 22:25:37,886 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 22:25:37,886 INFO L158 Benchmark]: Toolchain (without parser) took 3756.67ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 51.8MB in the beginning and 69.7MB in the end (delta: -18.0MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2021-12-17 22:25:37,886 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 86.0MB. Free memory was 55.6MB in the beginning and 55.6MB in the end (delta: 26.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 22:25:37,887 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.28ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 51.6MB in the beginning and 73.0MB in the end (delta: -21.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 22:25:37,887 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.77ms. Allocated memory is still 104.9MB. Free memory was 72.4MB in the beginning and 70.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 22:25:37,887 INFO L158 Benchmark]: Boogie Preprocessor took 38.24ms. Allocated memory is still 104.9MB. Free memory was 70.9MB in the beginning and 69.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 22:25:37,888 INFO L158 Benchmark]: RCFGBuilder took 274.94ms. Allocated memory is still 104.9MB. Free memory was 69.2MB in the beginning and 57.2MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-17 22:25:37,888 INFO L158 Benchmark]: TraceAbstraction took 2962.96ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 56.6MB in the beginning and 71.8MB in the end (delta: -15.2MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2021-12-17 22:25:37,888 INFO L158 Benchmark]: Witness Printer took 34.07ms. Allocated memory is still 125.8MB. Free memory was 71.8MB in the beginning and 69.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 22:25:37,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 86.0MB. Free memory was 55.6MB in the beginning and 55.6MB in the end (delta: 26.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.28ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 51.6MB in the beginning and 73.0MB in the end (delta: -21.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.77ms. Allocated memory is still 104.9MB. Free memory was 72.4MB in the beginning and 70.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.24ms. Allocated memory is still 104.9MB. Free memory was 70.9MB in the beginning and 69.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 274.94ms. Allocated memory is still 104.9MB. Free memory was 69.2MB in the beginning and 57.2MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2962.96ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 56.6MB in the beginning and 71.8MB in the end (delta: -15.2MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Witness Printer took 34.07ms. Allocated memory is still 125.8MB. Free memory was 71.8MB in the beginning and 69.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 2.9s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 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, 0.4s 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s 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! [2021-12-17 22:25:37,914 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