./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-lit/qw2004-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 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-lit/qw2004-1.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 46374fd752f48016661a982099922335aa36fba4 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 12:14:29,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:14:29,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:14:29,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:14:29,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:14:29,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:14:29,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:14:29,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:14:29,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:14:29,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:14:29,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:14:29,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:14:29,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:14:29,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:14:29,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:14:29,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:14:29,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:14:29,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:14:29,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:14:29,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:14:29,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:14:29,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:14:29,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:14:29,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:14:29,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:14:29,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:14:29,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:14:29,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:14:29,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:14:29,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:14:29,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:14:29,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:14:29,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:14:29,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:14:29,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:14:29,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:14:29,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:14:29,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:14:29,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:14:29,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:14:29,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:14:29,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:14:29,841 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:14:29,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:14:29,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:14:29,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:14:29,846 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:14:29,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:14:29,846 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:14:29,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:14:29,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:14:29,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:14:29,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:14:29,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:14:29,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:14:29,849 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:14:29,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:14:29,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:14:29,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:14:29,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:14:29,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:14:29,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:14:29,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:14:29,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:14:29,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:14:29,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:14:29,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:14:29,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:14:29,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:14:29,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:14:29,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:14:29,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46374fd752f48016661a982099922335aa36fba4 [2020-12-02 12:14:30,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:14:30,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:14:30,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:14:30,336 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:14:30,337 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:14:30,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/qw2004-1.i [2020-12-02 12:14:30,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b561cdce/7af3ba9e59244e399778e1f09d521771/FLAG79b27d973 [2020-12-02 12:14:31,196 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:14:31,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/qw2004-1.i [2020-12-02 12:14:31,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b561cdce/7af3ba9e59244e399778e1f09d521771/FLAG79b27d973 [2020-12-02 12:14:31,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b561cdce/7af3ba9e59244e399778e1f09d521771 [2020-12-02 12:14:31,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:14:31,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:14:31,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:14:31,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:14:31,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:14:31,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:14:31" (1/1) ... [2020-12-02 12:14:31,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c720b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:31, skipping insertion in model container [2020-12-02 12:14:31,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:14:31" (1/1) ... [2020-12-02 12:14:31,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:14:31,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:14:32,010 WARN L226 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-lit/qw2004-1.i[30003,30016] [2020-12-02 12:14:32,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:14:32,047 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:14:32,095 WARN L226 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-lit/qw2004-1.i[30003,30016] [2020-12-02 12:14:32,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:14:32,232 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:14:32,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:32 WrapperNode [2020-12-02 12:14:32,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:14:32,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:14:32,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:14:32,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:14:32,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:32" (1/1) ... [2020-12-02 12:14:32,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:32" (1/1) ... [2020-12-02 12:14:32,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:14:32,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:14:32,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:14:32,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:14:32,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:32" (1/1) ... [2020-12-02 12:14:32,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:32" (1/1) ... [2020-12-02 12:14:32,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:32" (1/1) ... [2020-12-02 12:14:32,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:32" (1/1) ... [2020-12-02 12:14:32,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:32" (1/1) ... [2020-12-02 12:14:32,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:32" (1/1) ... [2020-12-02 12:14:32,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:32" (1/1) ... [2020-12-02 12:14:32,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:14:32,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:14:32,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:14:32,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:14:32,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:14:32,457 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-12-02 12:14:32,457 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-12-02 12:14:32,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:14:32,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:14:32,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:14:32,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:14:32,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:14:32,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:14:32,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:14:32,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:14:32,461 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 12:14:33,104 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:14:33,104 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-02 12:14:33,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:33 BoogieIcfgContainer [2020-12-02 12:14:33,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:14:33,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:14:33,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:14:33,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:14:33,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:14:31" (1/3) ... [2020-12-02 12:14:33,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6722f365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:14:33, skipping insertion in model container [2020-12-02 12:14:33,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:32" (2/3) ... [2020-12-02 12:14:33,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6722f365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:14:33, skipping insertion in model container [2020-12-02 12:14:33,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:33" (3/3) ... [2020-12-02 12:14:33,122 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-1.i [2020-12-02 12:14:33,138 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:14:33,138 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:14:33,143 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:14:33,144 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:14:33,181 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,181 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,182 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,182 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,182 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,183 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,183 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,183 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,183 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,184 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,184 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,184 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,184 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,185 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,185 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,185 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,185 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,186 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,186 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,186 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,186 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,186 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,187 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,187 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,187 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,188 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,188 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,188 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,188 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,188 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,189 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,189 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,189 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,190 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,190 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,190 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,190 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,190 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,191 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,191 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,191 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,192 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,192 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,192 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,192 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,193 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,193 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,193 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,194 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,194 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,194 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,194 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,195 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,195 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,195 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,195 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,196 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,196 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,196 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,196 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,199 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,199 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,200 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,200 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,200 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,200 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,201 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,201 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,201 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,201 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,202 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:33,205 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:14:33,221 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-02 12:14:33,251 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:14:33,251 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:14:33,251 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:14:33,251 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:14:33,252 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:14:33,252 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:14:33,252 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:14:33,252 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:14:33,269 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:14:33,273 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 91 transitions, 187 flow [2020-12-02 12:14:33,277 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 91 transitions, 187 flow [2020-12-02 12:14:33,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 91 transitions, 187 flow [2020-12-02 12:14:33,336 INFO L129 PetriNetUnfolder]: 6/90 cut-off events. [2020-12-02 12:14:33,337 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:14:33,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 90 events. 6/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-12-02 12:14:33,348 INFO L116 LiptonReduction]: Number of co-enabled transitions 2208 [2020-12-02 12:14:37,268 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-02 12:14:37,272 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 12:14:37,281 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-02 12:14:37,282 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 12:14:37,356 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-02 12:14:37,359 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 12:14:37,369 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-02 12:14:37,372 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 12:14:37,862 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-12-02 12:14:38,128 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-12-02 12:14:38,514 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-02 12:14:38,515 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 12:14:38,523 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-02 12:14:38,524 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 12:14:38,533 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-02 12:14:38,534 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 12:14:38,541 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-02 12:14:38,542 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 12:14:38,549 INFO L131 LiptonReduction]: Checked pairs total: 2537 [2020-12-02 12:14:38,550 INFO L133 LiptonReduction]: Total number of compositions: 102 [2020-12-02 12:14:38,558 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 16 places, 14 transitions, 33 flow [2020-12-02 12:14:38,568 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 32 states. [2020-12-02 12:14:38,571 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-02 12:14:38,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-02 12:14:38,577 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:38,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-02 12:14:38,578 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:38,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:38,585 INFO L82 PathProgramCache]: Analyzing trace with hash 11541918, now seen corresponding path program 1 times [2020-12-02 12:14:38,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:38,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825855862] [2020-12-02 12:14:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:14:38,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825855862] [2020-12-02 12:14:38,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:38,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:14:38,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273975449] [2020-12-02 12:14:38,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:14:38,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:38,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:14:38,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:14:38,915 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-12-02 12:14:38,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:38,949 INFO L93 Difference]: Finished difference Result 31 states and 50 transitions. [2020-12-02 12:14:38,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:14:38,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-02 12:14:38,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:38,961 INFO L225 Difference]: With dead ends: 31 [2020-12-02 12:14:38,961 INFO L226 Difference]: Without dead ends: 13 [2020-12-02 12:14:38,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:14:38,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-02 12:14:39,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-02 12:14:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-02 12:14:39,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-12-02 12:14:39,008 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 4 [2020-12-02 12:14:39,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:39,009 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-12-02 12:14:39,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:14:39,009 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2020-12-02 12:14:39,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:14:39,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:39,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:39,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:14:39,011 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:39,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:39,012 INFO L82 PathProgramCache]: Analyzing trace with hash -907954422, now seen corresponding path program 1 times [2020-12-02 12:14:39,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:39,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162779931] [2020-12-02 12:14:39,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:39,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:14:39,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162779931] [2020-12-02 12:14:39,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:39,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:14:39,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355237935] [2020-12-02 12:14:39,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:14:39,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:39,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:14:39,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:39,120 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 6 states. [2020-12-02 12:14:39,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:39,193 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-12-02 12:14:39,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:14:39,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-02 12:14:39,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:39,194 INFO L225 Difference]: With dead ends: 16 [2020-12-02 12:14:39,195 INFO L226 Difference]: Without dead ends: 12 [2020-12-02 12:14:39,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:14:39,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-02 12:14:39,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-02 12:14:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-02 12:14:39,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-12-02 12:14:39,200 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2020-12-02 12:14:39,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:39,200 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-12-02 12:14:39,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:14:39,200 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-12-02 12:14:39,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:14:39,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:39,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:39,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:14:39,202 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:39,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:39,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1323538872, now seen corresponding path program 2 times [2020-12-02 12:14:39,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:39,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893476882] [2020-12-02 12:14:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:14:39,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893476882] [2020-12-02 12:14:39,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:39,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:14:39,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061932394] [2020-12-02 12:14:39,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:39,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:39,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:39,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:39,275 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 5 states. [2020-12-02 12:14:39,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:39,308 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-12-02 12:14:39,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:14:39,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-02 12:14:39,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:39,309 INFO L225 Difference]: With dead ends: 11 [2020-12-02 12:14:39,309 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:14:39,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:14:39,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:14:39,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:14:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:14:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:14:39,311 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-12-02 12:14:39,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:39,312 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:14:39,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:14:39,312 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:14:39,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:14:39,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:14:39 BasicIcfg [2020-12-02 12:14:39,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:14:39,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:14:39,318 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:14:39,318 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:14:39,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:33" (3/4) ... [2020-12-02 12:14:39,323 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:14:39,332 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure BCSP_PnpStop [2020-12-02 12:14:39,338 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-02 12:14:39,339 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-02 12:14:39,339 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:14:39,340 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:14:39,411 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:14:39,413 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:14:39,415 INFO L168 Benchmark]: Toolchain (without parser) took 7910.14 ms. Allocated memory was 39.8 MB in the beginning and 134.2 MB in the end (delta: 94.4 MB). Free memory was 25.4 MB in the beginning and 80.9 MB in the end (delta: -55.6 MB). Peak memory consumption was 37.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:39,418 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 39.8 MB. Free memory is still 25.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:14:39,419 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.34 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 25.2 MB in the beginning and 23.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:39,420 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.17 ms. Allocated memory is still 48.2 MB. Free memory was 23.7 MB in the beginning and 21.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:39,421 INFO L168 Benchmark]: Boogie Preprocessor took 32.56 ms. Allocated memory is still 48.2 MB. Free memory was 21.6 MB in the beginning and 20.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:14:39,421 INFO L168 Benchmark]: RCFGBuilder took 779.65 ms. Allocated memory is still 48.2 MB. Free memory was 20.3 MB in the beginning and 19.3 MB in the end (delta: 977.7 kB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:39,423 INFO L168 Benchmark]: TraceAbstraction took 6208.77 ms. Allocated memory was 48.2 MB in the beginning and 134.2 MB in the end (delta: 86.0 MB). Free memory was 18.9 MB in the beginning and 84.1 MB in the end (delta: -65.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:39,424 INFO L168 Benchmark]: Witness Printer took 95.75 ms. Allocated memory is still 134.2 MB. Free memory was 84.1 MB in the beginning and 80.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:39,430 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 39.8 MB. Free memory is still 25.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 727.34 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 25.2 MB in the beginning and 23.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.17 ms. Allocated memory is still 48.2 MB. Free memory was 23.7 MB in the beginning and 21.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.56 ms. Allocated memory is still 48.2 MB. Free memory was 21.6 MB in the beginning and 20.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 779.65 ms. Allocated memory is still 48.2 MB. Free memory was 20.3 MB in the beginning and 19.3 MB in the end (delta: 977.7 kB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6208.77 ms. Allocated memory was 48.2 MB in the beginning and 134.2 MB in the end (delta: 86.0 MB). Free memory was 18.9 MB in the beginning and 84.1 MB in the end (delta: -65.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. * Witness Printer took 95.75 ms. Allocated memory is still 134.2 MB. Free memory was 84.1 MB in the beginning and 80.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1575 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 41 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.2s, 89 PlacesBefore, 16 PlacesAfterwards, 91 TransitionsBefore, 14 TransitionsAfterwards, 2208 CoEnabledTransitionPairs, 8 FixpointIterations, 18 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 4 ChoiceCompositions, 102 TotalNumberOfCompositions, 2537 MoverChecksTotal - PositiveResult [Line: 690]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 28 SDtfs, 16 SDslu, 24 SDs, 0 SdLazy, 34 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 552 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...