./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-divine/condvar.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/condvar.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer --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 d16741ac57914c34248ac4b60573c9c4b90df3cc .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:59:11,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:59:11,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:59:11,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:59:11,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:59:11,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:59:11,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:59:11,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:59:11,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:59:11,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:59:11,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:59:11,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:59:11,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:59:11,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:59:11,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:59:11,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:59:11,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:59:11,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:59:11,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:59:11,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:59:11,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:59:11,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:59:11,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:59:11,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:59:11,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:59:11,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:59:11,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:59:11,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:59:11,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:59:11,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:59:11,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:59:11,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:59:11,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:59:11,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:59:11,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:59:11,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:59:11,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:59:11,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:59:11,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:59:11,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:59:11,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:59:11,256 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:59:11,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:59:11,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:59:11,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:59:11,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:59:11,290 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:59:11,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:59:11,290 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:59:11,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:59:11,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:59:11,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:59:11,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:59:11,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:59:11,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:59:11,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:59:11,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:59:11,293 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:59:11,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:59:11,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:59:11,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:59:11,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:59:11,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:59:11,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:59:11,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:59:11,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:59:11,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:59:11,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:59:11,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:59:11,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:59:11,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:59:11,297 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:/tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d16741ac57914c34248ac4b60573c9c4b90df3cc [2020-11-28 02:59:11,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:59:11,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:59:11,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:59:11,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:59:11,682 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:59:11,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer/../../sv-benchmarks/c/pthread-divine/condvar.i [2020-11-28 02:59:11,820 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer/data/acd98fb02/cc402428d4214d90b90bd74861c1e278/FLAG39aecbc9f [2020-11-28 02:59:12,477 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:59:12,478 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/sv-benchmarks/c/pthread-divine/condvar.i [2020-11-28 02:59:12,508 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer/data/acd98fb02/cc402428d4214d90b90bd74861c1e278/FLAG39aecbc9f [2020-11-28 02:59:12,716 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer/data/acd98fb02/cc402428d4214d90b90bd74861c1e278 [2020-11-28 02:59:12,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:59:12,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:59:12,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:59:12,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:59:12,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:59:12,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:12,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76dd258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12, skipping insertion in model container [2020-11-28 02:59:12,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:12,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:59:12,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:59:13,003 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-28 02:59:13,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:59:13,271 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:59:13,297 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-28 02:59:13,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:59:13,475 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:59:13,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:13 WrapperNode [2020-11-28 02:59:13,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:59:13,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:59:13,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:59:13,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:59:13,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:13" (1/1) ... [2020-11-28 02:59:13,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:13" (1/1) ... [2020-11-28 02:59:13,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:59:13,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:59:13,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:59:13,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:59:13,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:13" (1/1) ... [2020-11-28 02:59:13,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:13" (1/1) ... [2020-11-28 02:59:13,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:13" (1/1) ... [2020-11-28 02:59:13,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:13" (1/1) ... [2020-11-28 02:59:13,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:13" (1/1) ... [2020-11-28 02:59:13,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:13" (1/1) ... [2020-11-28 02:59:13,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:13" (1/1) ... [2020-11-28 02:59:13,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:59:13,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:59:13,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:59:13,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:59:13,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer/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 [2020-11-28 02:59:13,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:59:13,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:59:13,738 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-11-28 02:59:13,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:59:13,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:59:13,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:59:13,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2020-11-28 02:59:13,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2020-11-28 02:59:13,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:59:13,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:59:13,742 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 02:59:14,352 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:59:14,352 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-28 02:59:14,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:14 BoogieIcfgContainer [2020-11-28 02:59:14,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:59:14,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:59:14,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:59:14,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:59:14,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:59:12" (1/3) ... [2020-11-28 02:59:14,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e7bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:14, skipping insertion in model container [2020-11-28 02:59:14,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:13" (2/3) ... [2020-11-28 02:59:14,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e7bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:14, skipping insertion in model container [2020-11-28 02:59:14,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:14" (3/3) ... [2020-11-28 02:59:14,367 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2020-11-28 02:59:14,385 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 02:59:14,385 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:59:14,391 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:59:14,392 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 02:59:14,432 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,432 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,433 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,433 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,433 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,434 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,434 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,434 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,435 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,435 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,435 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,436 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,437 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,437 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,441 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,441 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,441 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,442 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,442 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,442 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_reach_error_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,442 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,443 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:59:14,454 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-11-28 02:59:14,469 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 02:59:14,507 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:59:14,507 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:59:14,507 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:59:14,508 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:59:14,508 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:59:14,508 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:59:14,508 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:59:14,508 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:59:14,527 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 02:59:14,529 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 73 transitions, 154 flow [2020-11-28 02:59:14,534 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 73 transitions, 154 flow [2020-11-28 02:59:14,537 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions, 154 flow [2020-11-28 02:59:14,637 INFO L129 PetriNetUnfolder]: 6/72 cut-off events. [2020-11-28 02:59:14,637 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-11-28 02:59:14,643 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 72 events. 6/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 31. Up to 3 conditions per place. [2020-11-28 02:59:14,647 INFO L116 LiptonReduction]: Number of co-enabled transitions 440 [2020-11-28 02:59:16,993 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-11-28 02:59:17,882 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-11-28 02:59:18,053 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-28 02:59:18,947 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 150 [2020-11-28 02:59:19,317 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-11-28 02:59:19,328 INFO L131 LiptonReduction]: Checked pairs total: 453 [2020-11-28 02:59:19,328 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-11-28 02:59:19,335 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 12 transitions, 32 flow [2020-11-28 02:59:19,344 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 16 states. [2020-11-28 02:59:19,346 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-28 02:59:19,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 02:59:19,350 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:19,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 02:59:19,351 INFO L429 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:19,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:19,358 INFO L82 PathProgramCache]: Analyzing trace with hash 9010901, now seen corresponding path program 1 times [2020-11-28 02:59:19,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:19,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054395785] [2020-11-28 02:59:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:19,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054395785] [2020-11-28 02:59:19,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:19,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 02:59:19,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253100708] [2020-11-28 02:59:19,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:59:19,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:19,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:59:19,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:59:19,779 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-11-28 02:59:19,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:19,821 INFO L93 Difference]: Finished difference Result 12 states and 18 transitions. [2020-11-28 02:59:19,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:59:19,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-28 02:59:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:19,834 INFO L225 Difference]: With dead ends: 12 [2020-11-28 02:59:19,834 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 02:59:19,836 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 [2020-11-28 02:59:19,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 02:59:19,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 02:59:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 02:59:19,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 15 transitions. [2020-11-28 02:59:19,878 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 15 transitions. Word has length 4 [2020-11-28 02:59:19,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:19,879 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 15 transitions. [2020-11-28 02:59:19,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:59:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 15 transitions. [2020-11-28 02:59:19,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 02:59:19,880 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:19,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 02:59:19,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:59:19,881 INFO L429 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:19,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:19,886 INFO L82 PathProgramCache]: Analyzing trace with hash 69514399, now seen corresponding path program 1 times [2020-11-28 02:59:19,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:19,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32507957] [2020-11-28 02:59:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:19,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32507957] [2020-11-28 02:59:19,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:20,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:59:20,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660069283] [2020-11-28 02:59:20,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:59:20,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:20,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:59:20,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:59:20,003 INFO L87 Difference]: Start difference. First operand 9 states and 15 transitions. Second operand 3 states. [2020-11-28 02:59:20,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:20,019 INFO L93 Difference]: Finished difference Result 11 states and 19 transitions. [2020-11-28 02:59:20,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:59:20,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 02:59:20,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:20,021 INFO L225 Difference]: With dead ends: 11 [2020-11-28 02:59:20,021 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 02:59:20,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:59:20,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 02:59:20,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 02:59:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 02:59:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 19 transitions. [2020-11-28 02:59:20,026 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 19 transitions. Word has length 6 [2020-11-28 02:59:20,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:20,026 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 19 transitions. [2020-11-28 02:59:20,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:59:20,027 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 19 transitions. [2020-11-28 02:59:20,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 02:59:20,028 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:20,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:20,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:59:20,029 INFO L429 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:20,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:20,030 INFO L82 PathProgramCache]: Analyzing trace with hash -2140011496, now seen corresponding path program 1 times [2020-11-28 02:59:20,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:20,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513243414] [2020-11-28 02:59:20,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:20,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:20,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513243414] [2020-11-28 02:59:20,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211722084] [2020-11-28 02:59:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:20,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 02:59:20,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:20,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:59:20,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-28 02:59:20,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9978667] [2020-11-28 02:59:20,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:59:20,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:20,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:59:20,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:20,417 INFO L87 Difference]: Start difference. First operand 11 states and 19 transitions. Second operand 5 states. [2020-11-28 02:59:20,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:20,477 INFO L93 Difference]: Finished difference Result 13 states and 23 transitions. [2020-11-28 02:59:20,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:59:20,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-28 02:59:20,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:20,479 INFO L225 Difference]: With dead ends: 13 [2020-11-28 02:59:20,479 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 02:59:20,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:20,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 02:59:20,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-28 02:59:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 02:59:20,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 23 transitions. [2020-11-28 02:59:20,483 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 23 transitions. Word has length 7 [2020-11-28 02:59:20,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:20,484 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 23 transitions. [2020-11-28 02:59:20,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:59:20,484 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 23 transitions. [2020-11-28 02:59:20,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 02:59:20,484 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:20,485 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:20,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 02:59:20,686 INFO L429 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:20,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:20,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1915837505, now seen corresponding path program 2 times [2020-11-28 02:59:20,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:20,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937717574] [2020-11-28 02:59:20,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:20,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:20,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937717574] [2020-11-28 02:59:20,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176262120] [2020-11-28 02:59:20,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:20,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:59:20,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:59:20,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:59:20,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:20,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:59:20,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-28 02:59:20,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127554941] [2020-11-28 02:59:20,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:59:20,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:20,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:59:20,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:59:20,885 INFO L87 Difference]: Start difference. First operand 13 states and 23 transitions. Second operand 6 states. [2020-11-28 02:59:20,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:20,908 INFO L93 Difference]: Finished difference Result 15 states and 27 transitions. [2020-11-28 02:59:20,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:59:20,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-28 02:59:20,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:20,910 INFO L225 Difference]: With dead ends: 15 [2020-11-28 02:59:20,910 INFO L226 Difference]: Without dead ends: 15 [2020-11-28 02:59:20,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:59:20,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-28 02:59:20,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-28 02:59:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 02:59:20,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 27 transitions. [2020-11-28 02:59:20,914 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 27 transitions. Word has length 8 [2020-11-28 02:59:20,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:20,915 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 27 transitions. [2020-11-28 02:59:20,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:59:20,915 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 27 transitions. [2020-11-28 02:59:20,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:59:20,916 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:20,916 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:21,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:21,127 INFO L429 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:59:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:21,128 INFO L82 PathProgramCache]: Analyzing trace with hash 738588920, now seen corresponding path program 3 times [2020-11-28 02:59:21,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:21,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321613964] [2020-11-28 02:59:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:21,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:21,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321613964] [2020-11-28 02:59:21,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205838452] [2020-11-28 02:59:21,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:21,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-28 02:59:21,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:59:21,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:59:21,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 02:59:21,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:59:21,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2020-11-28 02:59:21,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865764669] [2020-11-28 02:59:21,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:59:21,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:21,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:59:21,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:59:21,505 INFO L87 Difference]: Start difference. First operand 15 states and 27 transitions. Second operand 4 states. [2020-11-28 02:59:21,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:21,553 INFO L93 Difference]: Finished difference Result 14 states and 26 transitions. [2020-11-28 02:59:21,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:59:21,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 02:59:21,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:21,553 INFO L225 Difference]: With dead ends: 14 [2020-11-28 02:59:21,553 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:59:21,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:59:21,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:59:21,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:59:21,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:59:21,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:59:21,555 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-11-28 02:59:21,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:21,555 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:59:21,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:59:21,555 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:59:21,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:59:21,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:21,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:59:21 BasicIcfg [2020-11-28 02:59:21,759 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:59:21,759 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:59:21,759 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:59:21,759 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:59:21,760 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:14" (3/4) ... [2020-11-28 02:59:21,762 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:59:21,767 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread [2020-11-28 02:59:21,773 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-28 02:59:21,773 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 02:59:21,773 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 02:59:21,774 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:59:21,837 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e64b478b-08a9-43bc-ba73-9175c49398ad/bin/uautomizer/witness.graphml [2020-11-28 02:59:21,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:59:21,839 INFO L168 Benchmark]: Toolchain (without parser) took 9117.67 ms. Allocated memory was 81.8 MB in the beginning and 172.0 MB in the end (delta: 90.2 MB). Free memory was 44.2 MB in the beginning and 131.2 MB in the end (delta: -87.0 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:21,840 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory is still 45.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:21,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.01 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 44.0 MB in the beginning and 67.9 MB in the end (delta: -23.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:21,844 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.81 ms. Allocated memory is still 109.1 MB. Free memory was 67.9 MB in the beginning and 66.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:21,845 INFO L168 Benchmark]: Boogie Preprocessor took 75.53 ms. Allocated memory is still 109.1 MB. Free memory was 66.3 MB in the beginning and 65.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:21,848 INFO L168 Benchmark]: RCFGBuilder took 709.60 ms. Allocated memory is still 109.1 MB. Free memory was 65.0 MB in the beginning and 43.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:21,848 INFO L168 Benchmark]: TraceAbstraction took 7400.27 ms. Allocated memory was 109.1 MB in the beginning and 172.0 MB in the end (delta: 62.9 MB). Free memory was 42.7 MB in the beginning and 133.7 MB in the end (delta: -91.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:21,849 INFO L168 Benchmark]: Witness Printer took 78.80 ms. Allocated memory is still 172.0 MB. Free memory was 133.7 MB in the beginning and 131.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:21,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory is still 45.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 753.01 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 44.0 MB in the beginning and 67.9 MB in the end (delta: -23.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.81 ms. Allocated memory is still 109.1 MB. Free memory was 67.9 MB in the beginning and 66.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.53 ms. Allocated memory is still 109.1 MB. Free memory was 66.3 MB in the beginning and 65.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 709.60 ms. Allocated memory is still 109.1 MB. Free memory was 65.0 MB in the beginning and 43.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7400.27 ms. Allocated memory was 109.1 MB in the beginning and 172.0 MB in the end (delta: 62.9 MB). Free memory was 42.7 MB in the beginning and 133.7 MB in the end (delta: -91.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 78.80 ms. Allocated memory is still 172.0 MB. Free memory was 133.7 MB in the beginning and 131.2 MB in the end (delta: 2.5 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 318 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 3 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 6 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.7s, 71 PlacesBefore, 14 PlacesAfterwards, 73 TransitionsBefore, 12 TransitionsAfterwards, 440 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 4 ChoiceCompositions, 71 TotalNumberOfCompositions, 453 MoverChecksTotal - PositiveResult [Line: 696]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.2s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 47 SDtfs, 24 SDslu, 40 SDs, 0 SdLazy, 32 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 58 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 668 SizeOfPredicates, 3 NumberOfNonLiveVariables, 334 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 6/20 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...