./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.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-wmm/safe026_tso.oepc.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 692cfe8c8c302b29f29b9d33b1fef0f3efd9c990 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:11:16,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:11:16,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:11:16,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:11:16,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:11:16,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:11:16,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:11:16,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:11:16,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:11:16,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:11:16,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:11:16,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:11:16,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:11:16,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:11:16,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:11:16,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:11:16,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:11:16,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:11:16,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:11:16,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:11:16,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:11:16,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:11:16,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:11:16,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:11:16,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:11:16,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:11:16,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:11:16,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:11:16,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:11:16,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:11:16,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:11:16,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:11:16,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:11:16,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:11:16,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:11:16,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:11:16,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:11:16,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:11:16,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:11:16,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:11:16,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:11:16,368 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:11:16,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:11:16,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:11:16,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:11:16,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:11:16,400 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:11:16,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:11:16,400 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:11:16,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:11:16,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:11:16,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:11:16,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:11:16,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:11:16,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:11:16,403 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:11:16,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:11:16,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:11:16,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:11:16,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:11:16,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:11:16,405 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:11:16,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:11:16,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:11:16,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:11:16,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:11:16,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:11:16,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:11:16,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:11:16,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:11:16,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:11:16,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 692cfe8c8c302b29f29b9d33b1fef0f3efd9c990 [2020-12-02 12:11:16,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:11:16,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:11:16,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:11:16,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:11:16,846 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:11:16,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i [2020-12-02 12:11:16,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d64a1cf03/46d714e367ed420796e85ccd4380d316/FLAG0ad22f476 [2020-12-02 12:11:17,673 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:11:17,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i [2020-12-02 12:11:17,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d64a1cf03/46d714e367ed420796e85ccd4380d316/FLAG0ad22f476 [2020-12-02 12:11:17,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d64a1cf03/46d714e367ed420796e85ccd4380d316 [2020-12-02 12:11:17,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:11:17,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:11:17,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:11:17,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:11:17,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:11:17,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:11:17" (1/1) ... [2020-12-02 12:11:17,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae5c192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:17, skipping insertion in model container [2020-12-02 12:11:17,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:11:17" (1/1) ... [2020-12-02 12:11:17,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:11:17,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:11:18,161 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-wmm/safe026_tso.oepc.i[950,963] [2020-12-02 12:11:18,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:11:18,391 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:11:18,407 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-wmm/safe026_tso.oepc.i[950,963] [2020-12-02 12:11:18,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:11:18,575 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:11:18,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:18 WrapperNode [2020-12-02 12:11:18,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:11:18,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:11:18,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:11:18,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:11:18,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:18" (1/1) ... [2020-12-02 12:11:18,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:18" (1/1) ... [2020-12-02 12:11:18,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:11:18,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:11:18,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:11:18,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:11:18,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:18" (1/1) ... [2020-12-02 12:11:18,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:18" (1/1) ... [2020-12-02 12:11:18,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:18" (1/1) ... [2020-12-02 12:11:18,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:18" (1/1) ... [2020-12-02 12:11:18,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:18" (1/1) ... [2020-12-02 12:11:18,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:18" (1/1) ... [2020-12-02 12:11:18,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:18" (1/1) ... [2020-12-02 12:11:18,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:11:18,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:11:18,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:11:18,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:11:18,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:18" (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 12:11:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:11:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:11:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:11:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:11:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:11:18,810 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:11:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:11:18,811 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:11:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:11:18,811 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:11:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:11:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:11:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:11:18,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:11:18,814 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 12:11:19,192 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:11:19,192 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:11:19,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:19 BoogieIcfgContainer [2020-12-02 12:11:19,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:11:19,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:11:19,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:11:19,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:11:19,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:11:17" (1/3) ... [2020-12-02 12:11:19,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c95f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:11:19, skipping insertion in model container [2020-12-02 12:11:19,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:18" (2/3) ... [2020-12-02 12:11:19,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c95f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:11:19, skipping insertion in model container [2020-12-02 12:11:19,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:19" (3/3) ... [2020-12-02 12:11:19,211 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2020-12-02 12:11:19,251 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:11:19,252 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:11:19,261 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:11:19,263 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:11:19,351 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,352 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,352 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,352 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,353 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,353 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,354 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,354 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,355 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,355 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,355 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,359 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,360 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,360 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,360 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,361 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,361 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,361 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,361 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,362 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,365 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,365 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,366 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,367 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,367 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,367 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,370 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,371 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,371 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,371 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,373 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,381 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,381 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,382 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,382 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,392 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,393 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,398 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,398 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,398 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,399 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:19,404 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:11:19,422 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:11:19,468 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:11:19,468 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:11:19,469 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:11:19,469 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:11:19,469 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:11:19,469 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:11:19,469 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:11:19,469 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:11:19,504 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:11:19,507 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-02 12:11:19,511 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-02 12:11:19,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2020-12-02 12:11:19,602 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2020-12-02 12:11:19,604 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:11:19,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-12-02 12:11:19,619 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2020-12-02 12:11:22,373 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:11:22,659 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:11:22,778 INFO L131 LiptonReduction]: Checked pairs total: 2136 [2020-12-02 12:11:22,778 INFO L133 LiptonReduction]: Total number of compositions: 62 [2020-12-02 12:11:22,785 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-12-02 12:11:22,809 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-12-02 12:11:22,811 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-12-02 12:11:22,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:11:22,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:22,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:22,820 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:22,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:22,826 INFO L82 PathProgramCache]: Analyzing trace with hash -301136603, now seen corresponding path program 1 times [2020-12-02 12:11:22,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:22,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689896700] [2020-12-02 12:11:22,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:23,186 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 12:11:23,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689896700] [2020-12-02 12:11:23,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:23,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:11:23,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309965536] [2020-12-02 12:11:23,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:11:23,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:23,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:11:23,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:11:23,216 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-12-02 12:11:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:23,269 INFO L93 Difference]: Finished difference Result 340 states and 895 transitions. [2020-12-02 12:11:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:11:23,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-02 12:11:23,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:23,287 INFO L225 Difference]: With dead ends: 340 [2020-12-02 12:11:23,287 INFO L226 Difference]: Without dead ends: 232 [2020-12-02 12:11:23,289 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 12:11:23,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-12-02 12:11:23,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 210. [2020-12-02 12:11:23,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-12-02 12:11:23,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 547 transitions. [2020-12-02 12:11:23,359 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 547 transitions. Word has length 8 [2020-12-02 12:11:23,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:23,363 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 547 transitions. [2020-12-02 12:11:23,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:11:23,363 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 547 transitions. [2020-12-02 12:11:23,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:11:23,366 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:23,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:23,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:11:23,367 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:23,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:23,368 INFO L82 PathProgramCache]: Analyzing trace with hash -761965005, now seen corresponding path program 1 times [2020-12-02 12:11:23,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:23,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953450430] [2020-12-02 12:11:23,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:23,471 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 12:11:23,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953450430] [2020-12-02 12:11:23,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:23,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:11:23,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196404484] [2020-12-02 12:11:23,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:11:23,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:23,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:11:23,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:11:23,480 INFO L87 Difference]: Start difference. First operand 210 states and 547 transitions. Second operand 3 states. [2020-12-02 12:11:23,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:23,492 INFO L93 Difference]: Finished difference Result 202 states and 521 transitions. [2020-12-02 12:11:23,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:11:23,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-02 12:11:23,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:23,498 INFO L225 Difference]: With dead ends: 202 [2020-12-02 12:11:23,499 INFO L226 Difference]: Without dead ends: 202 [2020-12-02 12:11:23,500 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 12:11:23,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-12-02 12:11:23,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 186. [2020-12-02 12:11:23,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-12-02 12:11:23,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 485 transitions. [2020-12-02 12:11:23,533 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 485 transitions. Word has length 9 [2020-12-02 12:11:23,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:23,533 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 485 transitions. [2020-12-02 12:11:23,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:11:23,534 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 485 transitions. [2020-12-02 12:11:23,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:11:23,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:23,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:23,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:11:23,538 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:23,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:23,541 INFO L82 PathProgramCache]: Analyzing trace with hash -745317602, now seen corresponding path program 1 times [2020-12-02 12:11:23,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:23,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365117938] [2020-12-02 12:11:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:23,661 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 12:11:23,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365117938] [2020-12-02 12:11:23,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:23,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:23,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853978392] [2020-12-02 12:11:23,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:23,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:23,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:23,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:23,666 INFO L87 Difference]: Start difference. First operand 186 states and 485 transitions. Second operand 4 states. [2020-12-02 12:11:23,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:23,707 INFO L93 Difference]: Finished difference Result 208 states and 519 transitions. [2020-12-02 12:11:23,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:23,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:11:23,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:23,711 INFO L225 Difference]: With dead ends: 208 [2020-12-02 12:11:23,711 INFO L226 Difference]: Without dead ends: 208 [2020-12-02 12:11:23,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:23,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-12-02 12:11:23,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 180. [2020-12-02 12:11:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-02 12:11:23,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 463 transitions. [2020-12-02 12:11:23,738 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 463 transitions. Word has length 9 [2020-12-02 12:11:23,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:23,738 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 463 transitions. [2020-12-02 12:11:23,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:23,739 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 463 transitions. [2020-12-02 12:11:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:11:23,743 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:23,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:23,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:11:23,744 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:23,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:23,745 INFO L82 PathProgramCache]: Analyzing trace with hash -2146096176, now seen corresponding path program 1 times [2020-12-02 12:11:23,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:23,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80078831] [2020-12-02 12:11:23,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:23,846 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 12:11:23,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80078831] [2020-12-02 12:11:23,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:23,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:23,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761553494] [2020-12-02 12:11:23,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:23,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:23,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:23,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:23,853 INFO L87 Difference]: Start difference. First operand 180 states and 463 transitions. Second operand 4 states. [2020-12-02 12:11:23,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:23,893 INFO L93 Difference]: Finished difference Result 209 states and 490 transitions. [2020-12-02 12:11:23,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:11:23,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 12:11:23,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:23,896 INFO L225 Difference]: With dead ends: 209 [2020-12-02 12:11:23,896 INFO L226 Difference]: Without dead ends: 151 [2020-12-02 12:11:23,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:23,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-02 12:11:23,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-12-02 12:11:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-12-02 12:11:23,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 348 transitions. [2020-12-02 12:11:23,905 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 348 transitions. Word has length 10 [2020-12-02 12:11:23,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:23,906 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 348 transitions. [2020-12-02 12:11:23,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:23,906 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 348 transitions. [2020-12-02 12:11:23,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:11:23,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:23,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:23,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:11:23,908 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:23,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:23,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1675797027, now seen corresponding path program 1 times [2020-12-02 12:11:23,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:23,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310047558] [2020-12-02 12:11:23,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:23,960 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 12:11:23,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310047558] [2020-12-02 12:11:23,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:23,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:23,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480100548] [2020-12-02 12:11:23,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:11:23,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:23,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:11:23,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:23,963 INFO L87 Difference]: Start difference. First operand 151 states and 348 transitions. Second operand 5 states. [2020-12-02 12:11:24,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:24,013 INFO L93 Difference]: Finished difference Result 148 states and 315 transitions. [2020-12-02 12:11:24,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:11:24,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-02 12:11:24,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:24,015 INFO L225 Difference]: With dead ends: 148 [2020-12-02 12:11:24,016 INFO L226 Difference]: Without dead ends: 111 [2020-12-02 12:11:24,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:11:24,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-02 12:11:24,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-12-02 12:11:24,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-02 12:11:24,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 225 transitions. [2020-12-02 12:11:24,028 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 225 transitions. Word has length 11 [2020-12-02 12:11:24,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:24,028 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 225 transitions. [2020-12-02 12:11:24,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:11:24,028 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 225 transitions. [2020-12-02 12:11:24,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:11:24,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:24,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:24,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:11:24,038 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:24,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:24,038 INFO L82 PathProgramCache]: Analyzing trace with hash 170235503, now seen corresponding path program 1 times [2020-12-02 12:11:24,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:24,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382253885] [2020-12-02 12:11:24,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:24,156 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 12:11:24,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382253885] [2020-12-02 12:11:24,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:24,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:11:24,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449687521] [2020-12-02 12:11:24,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:11:24,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:24,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:11:24,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:11:24,161 INFO L87 Difference]: Start difference. First operand 109 states and 225 transitions. Second operand 6 states. [2020-12-02 12:11:24,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:24,215 INFO L93 Difference]: Finished difference Result 103 states and 211 transitions. [2020-12-02 12:11:24,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:11:24,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-02 12:11:24,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:24,217 INFO L225 Difference]: With dead ends: 103 [2020-12-02 12:11:24,217 INFO L226 Difference]: Without dead ends: 84 [2020-12-02 12:11:24,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:11:24,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-02 12:11:24,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-12-02 12:11:24,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-02 12:11:24,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 156 transitions. [2020-12-02 12:11:24,223 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 156 transitions. Word has length 13 [2020-12-02 12:11:24,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:24,224 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 156 transitions. [2020-12-02 12:11:24,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:11:24,224 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 156 transitions. [2020-12-02 12:11:24,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:11:24,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:24,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:24,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:11:24,226 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:24,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:24,227 INFO L82 PathProgramCache]: Analyzing trace with hash -523743225, now seen corresponding path program 1 times [2020-12-02 12:11:24,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:24,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276105392] [2020-12-02 12:11:24,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:24,338 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 12:11:24,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276105392] [2020-12-02 12:11:24,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:24,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:24,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408396330] [2020-12-02 12:11:24,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:24,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:24,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:24,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:24,343 INFO L87 Difference]: Start difference. First operand 76 states and 156 transitions. Second operand 4 states. [2020-12-02 12:11:24,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:24,380 INFO L93 Difference]: Finished difference Result 105 states and 209 transitions. [2020-12-02 12:11:24,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:11:24,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-02 12:11:24,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:24,382 INFO L225 Difference]: With dead ends: 105 [2020-12-02 12:11:24,383 INFO L226 Difference]: Without dead ends: 48 [2020-12-02 12:11:24,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:24,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-02 12:11:24,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-12-02 12:11:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-02 12:11:24,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 72 transitions. [2020-12-02 12:11:24,387 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 72 transitions. Word has length 16 [2020-12-02 12:11:24,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:24,388 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 72 transitions. [2020-12-02 12:11:24,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:24,388 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 72 transitions. [2020-12-02 12:11:24,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:11:24,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:24,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:24,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:11:24,390 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:24,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:24,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1399962537, now seen corresponding path program 2 times [2020-12-02 12:11:24,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:24,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145290701] [2020-12-02 12:11:24,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:24,516 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 12:11:24,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145290701] [2020-12-02 12:11:24,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:24,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:11:24,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953125654] [2020-12-02 12:11:24,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:11:24,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:24,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:11:24,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:24,521 INFO L87 Difference]: Start difference. First operand 44 states and 72 transitions. Second operand 5 states. [2020-12-02 12:11:24,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:24,552 INFO L93 Difference]: Finished difference Result 59 states and 96 transitions. [2020-12-02 12:11:24,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:11:24,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-02 12:11:24,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:24,553 INFO L225 Difference]: With dead ends: 59 [2020-12-02 12:11:24,553 INFO L226 Difference]: Without dead ends: 34 [2020-12-02 12:11:24,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:11:24,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-02 12:11:24,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-02 12:11:24,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-02 12:11:24,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-12-02 12:11:24,557 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 16 [2020-12-02 12:11:24,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:24,557 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-12-02 12:11:24,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:11:24,558 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-12-02 12:11:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:11:24,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:24,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:24,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:11:24,559 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:24,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:24,560 INFO L82 PathProgramCache]: Analyzing trace with hash 2077613865, now seen corresponding path program 3 times [2020-12-02 12:11:24,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:24,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359026251] [2020-12-02 12:11:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:24,629 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 12:11:24,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359026251] [2020-12-02 12:11:24,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:24,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:24,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822277645] [2020-12-02 12:11:24,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:11:24,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:24,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:11:24,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:24,638 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2020-12-02 12:11:24,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:24,650 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-12-02 12:11:24,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:24,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-02 12:11:24,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:24,651 INFO L225 Difference]: With dead ends: 33 [2020-12-02 12:11:24,652 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:11:24,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:11:24,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:11:24,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:11:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:11:24,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:11:24,653 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-02 12:11:24,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:24,654 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:11:24,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:11:24,654 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:11:24,654 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:11:24,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:11:24,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:11:24 BasicIcfg [2020-12-02 12:11:24,659 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:11:24,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:11:24,659 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:11:24,660 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:11:24,660 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:19" (3/4) ... [2020-12-02 12:11:24,665 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:11:24,673 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:11:24,673 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:11:24,673 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:11:24,683 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:11:24,684 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:11:24,684 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:11:24,684 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:11:24,729 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:11:24,729 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:11:24,731 INFO L168 Benchmark]: Toolchain (without parser) took 6824.04 ms. Allocated memory was 46.1 MB in the beginning and 123.7 MB in the end (delta: 77.6 MB). Free memory was 21.5 MB in the beginning and 58.8 MB in the end (delta: -37.2 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:24,732 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 37.7 MB. Free memory was 24.0 MB in the beginning and 24.0 MB in the end (delta: 21.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:11:24,732 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.74 ms. Allocated memory is still 46.1 MB. Free memory was 21.3 MB in the beginning and 20.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:24,733 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.17 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.0 MB in the beginning and 38.7 MB in the end (delta: -18.7 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:24,733 INFO L168 Benchmark]: Boogie Preprocessor took 31.58 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 37.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:11:24,734 INFO L168 Benchmark]: RCFGBuilder took 502.26 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 30.9 MB in the end (delta: 6.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:24,735 INFO L168 Benchmark]: TraceAbstraction took 5462.24 ms. Allocated memory was 56.6 MB in the beginning and 123.7 MB in the end (delta: 67.1 MB). Free memory was 30.6 MB in the beginning and 60.9 MB in the end (delta: -30.3 MB). Peak memory consumption was 37.0 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:24,736 INFO L168 Benchmark]: Witness Printer took 70.20 ms. Allocated memory is still 123.7 MB. Free memory was 60.9 MB in the beginning and 58.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:24,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 37.7 MB. Free memory was 24.0 MB in the beginning and 24.0 MB in the end (delta: 21.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 669.74 ms. Allocated memory is still 46.1 MB. Free memory was 21.3 MB in the beginning and 20.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.17 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.0 MB in the beginning and 38.7 MB in the end (delta: -18.7 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.58 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 37.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 502.26 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 30.9 MB in the end (delta: 6.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5462.24 ms. Allocated memory was 56.6 MB in the beginning and 123.7 MB in the end (delta: 67.1 MB). Free memory was 30.6 MB in the beginning and 60.9 MB in the end (delta: -30.3 MB). Peak memory consumption was 37.0 MB. Max. memory is 16.1 GB. * Witness Printer took 70.20 ms. Allocated memory is still 123.7 MB. Free memory was 60.9 MB in the beginning and 58.8 MB in the end (delta: 2.1 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 769 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 45 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 81 PlacesBefore, 30 PlacesAfterwards, 73 TransitionsBefore, 20 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 2136 MoverChecksTotal - PositiveResult [Line: 18]: 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 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 159 SDtfs, 150 SDslu, 199 SDs, 0 SdLazy, 128 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 80 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 5445 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...