./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/17_szymanski.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_e611c130-cddd-427f-90f2-89380a9306b0/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e611c130-cddd-427f-90f2-89380a9306b0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e611c130-cddd-427f-90f2-89380a9306b0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e611c130-cddd-427f-90f2-89380a9306b0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/17_szymanski.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e611c130-cddd-427f-90f2-89380a9306b0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e611c130-cddd-427f-90f2-89380a9306b0/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 9c051ca3a402db468e0ce05dfc38d0dfe3d0c9a7 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:18:20,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:18:20,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:18:20,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:18:20,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:18:20,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:18:20,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:18:20,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:18:20,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:18:20,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:18:20,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:18:20,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:18:20,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:18:20,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:18:20,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:18:20,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:18:20,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:18:20,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:18:20,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:18:20,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:18:20,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:18:20,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:18:20,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:18:20,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:18:20,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:18:20,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:18:20,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:18:20,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:18:20,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:18:20,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:18:20,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:18:20,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:18:20,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:18:20,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:18:20,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:18:20,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:18:20,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:18:20,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:18:20,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:18:20,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:18:20,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:18:20,276 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e611c130-cddd-427f-90f2-89380a9306b0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:18:20,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:18:20,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:18:20,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:18:20,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:18:20,307 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:18:20,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:18:20,308 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:18:20,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:18:20,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:18:20,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:18:20,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:18:20,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:18:20,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:18:20,310 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:18:20,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:18:20,311 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:18:20,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:18:20,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:18:20,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:18:20,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:18:20,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:18:20,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:18:20,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:18:20,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:18:20,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:18:20,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:18:20,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:18:20,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:18:20,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:18:20,315 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_e611c130-cddd-427f-90f2-89380a9306b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e611c130-cddd-427f-90f2-89380a9306b0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c051ca3a402db468e0ce05dfc38d0dfe3d0c9a7 [2020-11-29 22:18:20,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:18:20,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:18:20,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:18:20,650 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:18:20,651 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:18:20,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e611c130-cddd-427f-90f2-89380a9306b0/bin/uautomizer/../../sv-benchmarks/c/pthread-ext/17_szymanski.i [2020-11-29 22:18:20,721 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e611c130-cddd-427f-90f2-89380a9306b0/bin/uautomizer/data/665ae96ca/b16bd8120f73426194b0c1d24a09287a/FLAG541b3cac3 [2020-11-29 22:18:21,307 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:18:21,312 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e611c130-cddd-427f-90f2-89380a9306b0/sv-benchmarks/c/pthread-ext/17_szymanski.i [2020-11-29 22:18:21,333 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e611c130-cddd-427f-90f2-89380a9306b0/bin/uautomizer/data/665ae96ca/b16bd8120f73426194b0c1d24a09287a/FLAG541b3cac3 [2020-11-29 22:18:21,565 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e611c130-cddd-427f-90f2-89380a9306b0/bin/uautomizer/data/665ae96ca/b16bd8120f73426194b0c1d24a09287a [2020-11-29 22:18:21,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:18:21,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:18:21,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:18:21,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:18:21,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:18:21,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:18:21" (1/1) ... [2020-11-29 22:18:21,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63bdb278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:21, skipping insertion in model container [2020-11-29 22:18:21,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:18:21" (1/1) ... [2020-11-29 22:18:21,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:18:21,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:18:22,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:18:22,133 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:18:22,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:18:22,280 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:18:22,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:22 WrapperNode [2020-11-29 22:18:22,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:18:22,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:18:22,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:18:22,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:18:22,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:22" (1/1) ... [2020-11-29 22:18:22,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:22" (1/1) ... [2020-11-29 22:18:22,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:18:22,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:18:22,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:18:22,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:18:22,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:22" (1/1) ... [2020-11-29 22:18:22,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:22" (1/1) ... [2020-11-29 22:18:22,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:22" (1/1) ... [2020-11-29 22:18:22,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:22" (1/1) ... [2020-11-29 22:18:22,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:22" (1/1) ... [2020-11-29 22:18:22,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:22" (1/1) ... [2020-11-29 22:18:22,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:22" (1/1) ... [2020-11-29 22:18:22,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:18:22,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:18:22,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:18:22,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:18:22,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e611c130-cddd-427f-90f2-89380a9306b0/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 [2020-11-29 22:18:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-29 22:18:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-29 22:18:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:18:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:18:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:18:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:18:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:18:22,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:18:22,471 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-29 22:18:22,981 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:18:22,983 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 22:18:22,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:18:22 BoogieIcfgContainer [2020-11-29 22:18:22,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:18:22,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:18:22,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:18:22,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:18:22,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:18:21" (1/3) ... [2020-11-29 22:18:22,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581efb9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:18:22, skipping insertion in model container [2020-11-29 22:18:22,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:18:22" (2/3) ... [2020-11-29 22:18:22,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581efb9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:18:22, skipping insertion in model container [2020-11-29 22:18:22,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:18:22" (3/3) ... [2020-11-29 22:18:22,997 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-11-29 22:18:23,008 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 22:18:23,009 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:18:23,013 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 22:18:23,014 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 22:18:23,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:18:23,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:18:23,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:18:23,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:18:23,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:18:23,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:18:23,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:18:23,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:18:23,051 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:18:23,051 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:18:23,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:18:23,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:18:23,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:18:23,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:18:23,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:18:23,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:18:23,065 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 22:18:23,077 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 22:18:23,107 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:18:23,108 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:18:23,108 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:18:23,108 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:18:23,108 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:18:23,108 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:18:23,109 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:18:23,109 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:18:23,123 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 22:18:23,125 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 96 transitions, 197 flow [2020-11-29 22:18:23,128 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 96 transitions, 197 flow [2020-11-29 22:18:23,130 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 96 transitions, 197 flow [2020-11-29 22:18:23,197 INFO L129 PetriNetUnfolder]: 26/95 cut-off events. [2020-11-29 22:18:23,197 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 22:18:23,206 INFO L80 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 26/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 80. Up to 3 conditions per place. [2020-11-29 22:18:23,213 INFO L116 LiptonReduction]: Number of co-enabled transitions 3150 [2020-11-29 22:18:24,703 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-11-29 22:18:24,821 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-11-29 22:18:24,853 INFO L131 LiptonReduction]: Checked pairs total: 5734 [2020-11-29 22:18:24,854 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-11-29 22:18:24,859 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2020-11-29 22:18:24,886 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2020-11-29 22:18:24,888 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-11-29 22:18:24,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 22:18:24,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:18:24,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:18:24,900 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:18:24,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:18:24,906 INFO L82 PathProgramCache]: Analyzing trace with hash 556857473, now seen corresponding path program 1 times [2020-11-29 22:18:24,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:18:24,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845108745] [2020-11-29 22:18:24,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:18:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:18:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:18:25,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845108745] [2020-11-29 22:18:25,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:18:25,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:18:25,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401539566] [2020-11-29 22:18:25,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:18:25,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:18:25,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:18:25,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:18:25,138 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2020-11-29 22:18:25,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:18:25,160 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2020-11-29 22:18:25,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:18:25,161 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 22:18:25,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:18:25,174 INFO L225 Difference]: With dead ends: 198 [2020-11-29 22:18:25,174 INFO L226 Difference]: Without dead ends: 198 [2020-11-29 22:18:25,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:18:25,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-29 22:18:25,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-11-29 22:18:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-11-29 22:18:25,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2020-11-29 22:18:25,234 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2020-11-29 22:18:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:18:25,235 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2020-11-29 22:18:25,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:18:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2020-11-29 22:18:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:18:25,237 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:18:25,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:18:25,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:18:25,237 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:18:25,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:18:25,238 INFO L82 PathProgramCache]: Analyzing trace with hash -265870444, now seen corresponding path program 1 times [2020-11-29 22:18:25,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:18:25,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391218700] [2020-11-29 22:18:25,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:18:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:18:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:18:25,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391218700] [2020-11-29 22:18:25,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:18:25,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:18:25,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307215938] [2020-11-29 22:18:25,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:18:25,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:18:25,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:18:25,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:18:25,314 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2020-11-29 22:18:25,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:18:25,366 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2020-11-29 22:18:25,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:18:25,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-29 22:18:25,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:18:25,376 INFO L225 Difference]: With dead ends: 362 [2020-11-29 22:18:25,377 INFO L226 Difference]: Without dead ends: 362 [2020-11-29 22:18:25,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:18:25,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-11-29 22:18:25,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2020-11-29 22:18:25,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-11-29 22:18:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2020-11-29 22:18:25,428 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2020-11-29 22:18:25,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:18:25,429 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2020-11-29 22:18:25,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:18:25,429 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2020-11-29 22:18:25,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:18:25,432 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:18:25,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:18:25,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:18:25,434 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:18:25,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:18:25,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1897023782, now seen corresponding path program 1 times [2020-11-29 22:18:25,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:18:25,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719787763] [2020-11-29 22:18:25,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:18:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:18:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:18:25,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719787763] [2020-11-29 22:18:25,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:18:25,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:18:25,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965392064] [2020-11-29 22:18:25,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:18:25,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:18:25,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:18:25,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:18:25,495 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2020-11-29 22:18:25,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:18:25,519 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2020-11-29 22:18:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:18:25,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-29 22:18:25,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:18:25,524 INFO L225 Difference]: With dead ends: 348 [2020-11-29 22:18:25,524 INFO L226 Difference]: Without dead ends: 348 [2020-11-29 22:18:25,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:18:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-11-29 22:18:25,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2020-11-29 22:18:25,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-29 22:18:25,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2020-11-29 22:18:25,557 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2020-11-29 22:18:25,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:18:25,557 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2020-11-29 22:18:25,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:18:25,558 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2020-11-29 22:18:25,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:18:25,565 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:18:25,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:18:25,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:18:25,566 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:18:25,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:18:25,567 INFO L82 PathProgramCache]: Analyzing trace with hash -293575379, now seen corresponding path program 1 times [2020-11-29 22:18:25,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:18:25,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962244172] [2020-11-29 22:18:25,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:18:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:18:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:18:25,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962244172] [2020-11-29 22:18:25,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:18:25,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:18:25,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499159411] [2020-11-29 22:18:25,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:18:25,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:18:25,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:18:25,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:18:25,635 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 3 states. [2020-11-29 22:18:25,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:18:25,704 INFO L93 Difference]: Finished difference Result 234 states and 577 transitions. [2020-11-29 22:18:25,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:18:25,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-29 22:18:25,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:18:25,707 INFO L225 Difference]: With dead ends: 234 [2020-11-29 22:18:25,708 INFO L226 Difference]: Without dead ends: 234 [2020-11-29 22:18:25,708 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 [2020-11-29 22:18:25,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-29 22:18:25,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 230. [2020-11-29 22:18:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-29 22:18:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 569 transitions. [2020-11-29 22:18:25,723 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 569 transitions. Word has length 19 [2020-11-29 22:18:25,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:18:25,729 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 569 transitions. [2020-11-29 22:18:25,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:18:25,730 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 569 transitions. [2020-11-29 22:18:25,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:18:25,731 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:18:25,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:18:25,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 22:18:25,732 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:18:25,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:18:25,733 INFO L82 PathProgramCache]: Analyzing trace with hash -369860675, now seen corresponding path program 2 times [2020-11-29 22:18:25,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:18:25,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790372158] [2020-11-29 22:18:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:18:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:18:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:18:25,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790372158] [2020-11-29 22:18:25,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:18:25,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:18:25,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315795404] [2020-11-29 22:18:25,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:18:25,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:18:25,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:18:25,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:18:25,793 INFO L87 Difference]: Start difference. First operand 230 states and 569 transitions. Second operand 3 states. [2020-11-29 22:18:25,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:18:25,836 INFO L93 Difference]: Finished difference Result 228 states and 553 transitions. [2020-11-29 22:18:25,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:18:25,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-29 22:18:25,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:18:25,838 INFO L225 Difference]: With dead ends: 228 [2020-11-29 22:18:25,838 INFO L226 Difference]: Without dead ends: 228 [2020-11-29 22:18:25,839 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 [2020-11-29 22:18:25,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-11-29 22:18:25,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-11-29 22:18:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-11-29 22:18:25,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 553 transitions. [2020-11-29 22:18:25,851 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 553 transitions. Word has length 19 [2020-11-29 22:18:25,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:18:25,851 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 553 transitions. [2020-11-29 22:18:25,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:18:25,852 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 553 transitions. [2020-11-29 22:18:25,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:18:25,853 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:18:25,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:18:25,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 22:18:25,853 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:18:25,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:18:25,854 INFO L82 PathProgramCache]: Analyzing trace with hash -520856579, now seen corresponding path program 3 times [2020-11-29 22:18:25,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:18:25,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309750399] [2020-11-29 22:18:25,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:18:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:18:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:18:25,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309750399] [2020-11-29 22:18:25,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:18:25,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:18:25,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701895291] [2020-11-29 22:18:25,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:18:25,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:18:25,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:18:25,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:18:25,913 INFO L87 Difference]: Start difference. First operand 228 states and 553 transitions. Second operand 3 states. [2020-11-29 22:18:25,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:18:25,959 INFO L93 Difference]: Finished difference Result 194 states and 463 transitions. [2020-11-29 22:18:25,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:18:25,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-29 22:18:25,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:18:25,960 INFO L225 Difference]: With dead ends: 194 [2020-11-29 22:18:25,960 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:18:25,960 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 [2020-11-29 22:18:25,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:18:25,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:18:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:18:25,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:18:25,961 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-29 22:18:25,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:18:25,962 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:18:25,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:18:25,962 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:18:25,962 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:18:25,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 22:18:25,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:18:25 BasicIcfg [2020-11-29 22:18:25,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:18:25,966 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:18:25,966 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:18:25,966 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:18:25,967 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:18:22" (3/4) ... [2020-11-29 22:18:25,970 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:18:25,976 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-11-29 22:18:25,981 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 22:18:25,981 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 22:18:25,981 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:18:25,982 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:18:26,027 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e611c130-cddd-427f-90f2-89380a9306b0/bin/uautomizer/witness.graphml [2020-11-29 22:18:26,027 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:18:26,029 INFO L168 Benchmark]: Toolchain (without parser) took 4458.87 ms. Allocated memory was 88.1 MB in the beginning and 138.4 MB in the end (delta: 50.3 MB). Free memory was 55.4 MB in the beginning and 82.5 MB in the end (delta: -27.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2020-11-29 22:18:26,029 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 47.5 MB in the beginning and 47.5 MB in the end (delta: 35.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:18:26,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.52 ms. Allocated memory is still 88.1 MB. Free memory was 55.2 MB in the beginning and 46.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:18:26,030 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.96 ms. Allocated memory is still 88.1 MB. Free memory was 46.9 MB in the beginning and 45.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:18:26,031 INFO L168 Benchmark]: Boogie Preprocessor took 68.56 ms. Allocated memory is still 88.1 MB. Free memory was 45.0 MB in the beginning and 43.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:18:26,031 INFO L168 Benchmark]: RCFGBuilder took 581.24 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 43.8 MB in the beginning and 72.0 MB in the end (delta: -28.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:18:26,032 INFO L168 Benchmark]: TraceAbstraction took 2975.72 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 72.0 MB in the beginning and 84.5 MB in the end (delta: -12.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:18:26,032 INFO L168 Benchmark]: Witness Printer took 61.27 ms. Allocated memory is still 138.4 MB. Free memory was 84.5 MB in the beginning and 82.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:18:26,035 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 47.5 MB in the beginning and 47.5 MB in the end (delta: 35.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 707.52 ms. Allocated memory is still 88.1 MB. Free memory was 55.2 MB in the beginning and 46.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.96 ms. Allocated memory is still 88.1 MB. Free memory was 46.9 MB in the beginning and 45.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.56 ms. Allocated memory is still 88.1 MB. Free memory was 45.0 MB in the beginning and 43.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 581.24 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 43.8 MB in the beginning and 72.0 MB in the end (delta: -28.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2975.72 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 72.0 MB in the beginning and 84.5 MB in the end (delta: -12.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. * Witness Printer took 61.27 ms. Allocated memory is still 138.4 MB. Free memory was 84.5 MB in the beginning and 82.5 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 1482 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 16 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 107 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 74 PlacesBefore, 35 PlacesAfterwards, 96 TransitionsBefore, 51 TransitionsAfterwards, 3150 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 63 TotalNumberOfCompositions, 5734 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 71 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 314 SDtfs, 133 SDslu, 117 SDs, 0 SdLazy, 76 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=4, 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, 6 MinimizatonAttempts, 275 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...