./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe003_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f4d9116e-6118-4f5b-b579-b8549acf37bc/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f4d9116e-6118-4f5b-b579-b8549acf37bc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f4d9116e-6118-4f5b-b579-b8549acf37bc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f4d9116e-6118-4f5b-b579-b8549acf37bc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe003_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f4d9116e-6118-4f5b-b579-b8549acf37bc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f4d9116e-6118-4f5b-b579-b8549acf37bc/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 bc21758e77fe8daef5c30ddb66e2ae4ecd287b02 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:54:48,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:54:48,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:54:48,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:54:48,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:54:48,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:54:48,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:54:48,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:54:48,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:54:48,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:54:48,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:54:48,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:54:48,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:54:48,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:54:48,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:54:48,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:54:48,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:54:48,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:54:48,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:54:48,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:54:48,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:54:48,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:54:48,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:54:48,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:54:48,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:54:48,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:54:48,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:54:48,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:54:48,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:54:48,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:54:48,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:54:48,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:54:48,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:54:48,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:54:48,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:54:48,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:54:48,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:54:48,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:54:48,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:54:48,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:54:48,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:54:48,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f4d9116e-6118-4f5b-b579-b8549acf37bc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:54:48,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:54:48,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:54:48,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:54:48,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:54:48,326 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:54:48,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:54:48,327 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:54:48,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:54:48,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:54:48,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:54:48,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:54:48,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:54:48,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:54:48,329 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:54:48,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:54:48,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:54:48,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:54:48,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:54:48,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:54:48,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:54:48,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:54:48,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:54:48,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:54:48,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:54:48,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:54:48,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:54:48,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:54:48,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:54:48,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:54:48,334 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_f4d9116e-6118-4f5b-b579-b8549acf37bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f4d9116e-6118-4f5b-b579-b8549acf37bc/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc21758e77fe8daef5c30ddb66e2ae4ecd287b02 [2020-12-01 15:54:48,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:54:48,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:54:48,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:54:48,756 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:54:48,757 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:54:48,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f4d9116e-6118-4f5b-b579-b8549acf37bc/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe003_tso.oepc.i [2020-12-01 15:54:48,840 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4d9116e-6118-4f5b-b579-b8549acf37bc/bin/uautomizer/data/9c3cacf22/36708331e398459d80f913c2c66537b6/FLAG4415ccf5a [2020-12-01 15:54:49,530 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:54:49,534 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f4d9116e-6118-4f5b-b579-b8549acf37bc/sv-benchmarks/c/pthread-wmm/safe003_tso.oepc.i [2020-12-01 15:54:49,564 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4d9116e-6118-4f5b-b579-b8549acf37bc/bin/uautomizer/data/9c3cacf22/36708331e398459d80f913c2c66537b6/FLAG4415ccf5a [2020-12-01 15:54:49,757 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f4d9116e-6118-4f5b-b579-b8549acf37bc/bin/uautomizer/data/9c3cacf22/36708331e398459d80f913c2c66537b6 [2020-12-01 15:54:49,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:54:49,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:54:49,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:54:49,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:54:49,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:54:49,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:54:49" (1/1) ... [2020-12-01 15:54:49,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d48c348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:49, skipping insertion in model container [2020-12-01 15:54:49,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:54:49" (1/1) ... [2020-12-01 15:54:49,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:54:49,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:54:50,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:54:50,350 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:54:50,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:54:50,518 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:54:50,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:50 WrapperNode [2020-12-01 15:54:50,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:54:50,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:54:50,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:54:50,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:54:50,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:50" (1/1) ... [2020-12-01 15:54:50,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:50" (1/1) ... [2020-12-01 15:54:50,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:54:50,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:54:50,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:54:50,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:54:50,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:50" (1/1) ... [2020-12-01 15:54:50,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:50" (1/1) ... [2020-12-01 15:54:50,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:50" (1/1) ... [2020-12-01 15:54:50,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:50" (1/1) ... [2020-12-01 15:54:50,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:50" (1/1) ... [2020-12-01 15:54:50,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:50" (1/1) ... [2020-12-01 15:54:50,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:50" (1/1) ... [2020-12-01 15:54:50,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:54:50,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:54:50,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:54:50,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:54:50,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4d9116e-6118-4f5b-b579-b8549acf37bc/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 [2020-12-01 15:54:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:54:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-01 15:54:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:54:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:54:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-01 15:54:50,724 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-01 15:54:50,724 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-01 15:54:50,724 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-01 15:54:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-01 15:54:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-01 15:54:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:54:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-01 15:54:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:54:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:54:50,728 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-01 15:54:51,264 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:54:51,264 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 15:54:51,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:54:51 BoogieIcfgContainer [2020-12-01 15:54:51,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:54:51,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:54:51,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:54:51,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:54:51,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:54:49" (1/3) ... [2020-12-01 15:54:51,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49102a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:54:51, skipping insertion in model container [2020-12-01 15:54:51,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:50" (2/3) ... [2020-12-01 15:54:51,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49102a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:54:51, skipping insertion in model container [2020-12-01 15:54:51,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:54:51" (3/3) ... [2020-12-01 15:54:51,278 INFO L111 eAbstractionObserver]: Analyzing ICFG safe003_tso.oepc.i [2020-12-01 15:54:51,296 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-01 15:54:51,296 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:54:51,300 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:54:51,301 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-01 15:54:51,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,341 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,341 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,341 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,342 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,342 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,342 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,342 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,343 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,343 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,344 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,344 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,345 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,345 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,345 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,346 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,346 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,346 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,346 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,347 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,347 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,348 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,348 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,348 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,349 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,349 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,350 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,350 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,350 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,351 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,351 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,351 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,352 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,352 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,352 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,353 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,356 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,357 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,364 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,365 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,365 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,368 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,368 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,368 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,369 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:54:51,371 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-01 15:54:51,385 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-01 15:54:51,412 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:54:51,412 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:54:51,412 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:54:51,412 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:54:51,413 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:54:51,413 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:54:51,413 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:54:51,413 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:54:51,428 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-01 15:54:51,429 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-12-01 15:54:51,432 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-12-01 15:54:51,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-12-01 15:54:51,488 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-12-01 15:54:51,488 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-01 15:54:51,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-12-01 15:54:51,497 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-12-01 15:54:55,734 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-01 15:54:55,886 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-01 15:54:56,117 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-01 15:54:56,239 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-12-01 15:54:56,239 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-12-01 15:54:56,246 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-01 15:54:56,278 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-01 15:54:56,280 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-01 15:54:56,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:54:56,295 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:56,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:56,296 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:56,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:56,301 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-12-01 15:54:56,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:56,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744983341] [2020-12-01 15:54:56,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:56,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:54:56,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744983341] [2020-12-01 15:54:56,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:56,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:54:56,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476929465] [2020-12-01 15:54:56,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:54:56,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:56,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:54:56,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:54:56,560 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-01 15:54:56,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:56,617 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-01 15:54:56,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:54:56,618 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-01 15:54:56,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:56,650 INFO L225 Difference]: With dead ends: 362 [2020-12-01 15:54:56,650 INFO L226 Difference]: Without dead ends: 298 [2020-12-01 15:54:56,652 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 [2020-12-01 15:54:56,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-01 15:54:56,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-01 15:54:56,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-01 15:54:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-01 15:54:56,750 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-01 15:54:56,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:56,752 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-01 15:54:56,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:54:56,752 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-01 15:54:56,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 15:54:56,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:56,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:56,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:54:56,755 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:56,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:56,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-12-01 15:54:56,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:56,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888580338] [2020-12-01 15:54:56,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:54:56,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888580338] [2020-12-01 15:54:56,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:56,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:54:56,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249599084] [2020-12-01 15:54:56,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:54:56,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:56,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:54:56,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:54:56,976 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-12-01 15:54:57,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:57,110 INFO L93 Difference]: Finished difference Result 304 states and 805 transitions. [2020-12-01 15:54:57,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:54:57,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-01 15:54:57,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:57,119 INFO L225 Difference]: With dead ends: 304 [2020-12-01 15:54:57,119 INFO L226 Difference]: Without dead ends: 276 [2020-12-01 15:54:57,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:54:57,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-12-01 15:54:57,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2020-12-01 15:54:57,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-12-01 15:54:57,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 746 transitions. [2020-12-01 15:54:57,171 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 746 transitions. Word has length 9 [2020-12-01 15:54:57,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:57,172 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 746 transitions. [2020-12-01 15:54:57,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:54:57,176 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 746 transitions. [2020-12-01 15:54:57,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:54:57,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:57,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:57,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:54:57,183 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:57,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:57,185 INFO L82 PathProgramCache]: Analyzing trace with hash 284483281, now seen corresponding path program 1 times [2020-12-01 15:54:57,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:57,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110014653] [2020-12-01 15:54:57,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:54:57,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110014653] [2020-12-01 15:54:57,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:57,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:54:57,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207215476] [2020-12-01 15:54:57,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:54:57,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:57,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:54:57,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:54:57,389 INFO L87 Difference]: Start difference. First operand 276 states and 746 transitions. Second operand 5 states. [2020-12-01 15:54:57,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:57,486 INFO L93 Difference]: Finished difference Result 295 states and 767 transitions. [2020-12-01 15:54:57,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:54:57,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-01 15:54:57,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:57,491 INFO L225 Difference]: With dead ends: 295 [2020-12-01 15:54:57,491 INFO L226 Difference]: Without dead ends: 275 [2020-12-01 15:54:57,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:54:57,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-12-01 15:54:57,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2020-12-01 15:54:57,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-12-01 15:54:57,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 731 transitions. [2020-12-01 15:54:57,513 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 731 transitions. Word has length 11 [2020-12-01 15:54:57,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:57,514 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 731 transitions. [2020-12-01 15:54:57,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:54:57,514 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 731 transitions. [2020-12-01 15:54:57,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:54:57,520 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:57,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:57,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:54:57,521 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:57,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:57,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1108046969, now seen corresponding path program 1 times [2020-12-01 15:54:57,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:57,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207598230] [2020-12-01 15:54:57,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:54:57,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207598230] [2020-12-01 15:54:57,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:57,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:54:57,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634918924] [2020-12-01 15:54:57,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:54:57,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:57,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:54:57,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:54:57,669 INFO L87 Difference]: Start difference. First operand 275 states and 731 transitions. Second operand 4 states. [2020-12-01 15:54:57,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:57,696 INFO L93 Difference]: Finished difference Result 289 states and 743 transitions. [2020-12-01 15:54:57,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:54:57,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-01 15:54:57,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:57,700 INFO L225 Difference]: With dead ends: 289 [2020-12-01 15:54:57,700 INFO L226 Difference]: Without dead ends: 261 [2020-12-01 15:54:57,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:54:57,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-12-01 15:54:57,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 256. [2020-12-01 15:54:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-12-01 15:54:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 682 transitions. [2020-12-01 15:54:57,716 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 682 transitions. Word has length 12 [2020-12-01 15:54:57,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:57,716 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 682 transitions. [2020-12-01 15:54:57,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:54:57,717 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 682 transitions. [2020-12-01 15:54:57,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:54:57,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:57,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:57,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:54:57,718 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:57,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:57,719 INFO L82 PathProgramCache]: Analyzing trace with hash 192469917, now seen corresponding path program 1 times [2020-12-01 15:54:57,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:57,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568068313] [2020-12-01 15:54:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:54:57,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568068313] [2020-12-01 15:54:57,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:57,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:54:57,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783202684] [2020-12-01 15:54:57,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:54:57,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:57,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:54:57,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:54:57,790 INFO L87 Difference]: Start difference. First operand 256 states and 682 transitions. Second operand 4 states. [2020-12-01 15:54:57,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:57,823 INFO L93 Difference]: Finished difference Result 268 states and 692 transitions. [2020-12-01 15:54:57,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:54:57,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-01 15:54:57,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:57,827 INFO L225 Difference]: With dead ends: 268 [2020-12-01 15:54:57,827 INFO L226 Difference]: Without dead ends: 244 [2020-12-01 15:54:57,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:54:57,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-12-01 15:54:57,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2020-12-01 15:54:57,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-12-01 15:54:57,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 648 transitions. [2020-12-01 15:54:57,840 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 648 transitions. Word has length 12 [2020-12-01 15:54:57,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:57,841 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 648 transitions. [2020-12-01 15:54:57,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:54:57,842 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 648 transitions. [2020-12-01 15:54:57,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:54:57,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:57,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:57,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:54:57,843 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:57,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:57,844 INFO L82 PathProgramCache]: Analyzing trace with hash 595693024, now seen corresponding path program 1 times [2020-12-01 15:54:57,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:57,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538371998] [2020-12-01 15:54:57,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:54:57,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538371998] [2020-12-01 15:54:57,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:57,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:54:57,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523041524] [2020-12-01 15:54:57,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:54:57,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:57,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:54:57,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:54:57,970 INFO L87 Difference]: Start difference. First operand 244 states and 648 transitions. Second operand 5 states. [2020-12-01 15:54:58,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:58,090 INFO L93 Difference]: Finished difference Result 361 states and 952 transitions. [2020-12-01 15:54:58,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:54:58,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-01 15:54:58,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:58,093 INFO L225 Difference]: With dead ends: 361 [2020-12-01 15:54:58,094 INFO L226 Difference]: Without dead ends: 228 [2020-12-01 15:54:58,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:54:58,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-12-01 15:54:58,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-12-01 15:54:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-12-01 15:54:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 592 transitions. [2020-12-01 15:54:58,107 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 592 transitions. Word has length 12 [2020-12-01 15:54:58,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:58,107 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 592 transitions. [2020-12-01 15:54:58,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:54:58,108 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 592 transitions. [2020-12-01 15:54:58,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:54:58,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:58,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:58,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:54:58,110 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:58,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:58,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1291780610, now seen corresponding path program 1 times [2020-12-01 15:54:58,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:58,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213303265] [2020-12-01 15:54:58,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:54:58,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213303265] [2020-12-01 15:54:58,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:58,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:54:58,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555146385] [2020-12-01 15:54:58,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:54:58,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:58,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:54:58,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:54:58,215 INFO L87 Difference]: Start difference. First operand 228 states and 592 transitions. Second operand 5 states. [2020-12-01 15:54:58,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:58,281 INFO L93 Difference]: Finished difference Result 300 states and 754 transitions. [2020-12-01 15:54:58,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:54:58,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-01 15:54:58,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:58,285 INFO L225 Difference]: With dead ends: 300 [2020-12-01 15:54:58,285 INFO L226 Difference]: Without dead ends: 146 [2020-12-01 15:54:58,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:54:58,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-01 15:54:58,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-12-01 15:54:58,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-01 15:54:58,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 345 transitions. [2020-12-01 15:54:58,297 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 345 transitions. Word has length 13 [2020-12-01 15:54:58,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:58,297 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 345 transitions. [2020-12-01 15:54:58,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:54:58,298 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 345 transitions. [2020-12-01 15:54:58,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:54:58,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:58,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:58,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 15:54:58,299 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:58,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:58,300 INFO L82 PathProgramCache]: Analyzing trace with hash 520580490, now seen corresponding path program 1 times [2020-12-01 15:54:58,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:58,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17248504] [2020-12-01 15:54:58,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:58,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:54:58,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17248504] [2020-12-01 15:54:58,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:58,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:54:58,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134565317] [2020-12-01 15:54:58,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:54:58,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:58,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:54:58,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:54:58,384 INFO L87 Difference]: Start difference. First operand 146 states and 345 transitions. Second operand 5 states. [2020-12-01 15:54:58,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:58,471 INFO L93 Difference]: Finished difference Result 179 states and 415 transitions. [2020-12-01 15:54:58,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:54:58,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-01 15:54:58,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:58,474 INFO L225 Difference]: With dead ends: 179 [2020-12-01 15:54:58,474 INFO L226 Difference]: Without dead ends: 104 [2020-12-01 15:54:58,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:54:58,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-01 15:54:58,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-12-01 15:54:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-01 15:54:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 222 transitions. [2020-12-01 15:54:58,484 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 222 transitions. Word has length 14 [2020-12-01 15:54:58,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:58,484 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 222 transitions. [2020-12-01 15:54:58,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:54:58,485 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 222 transitions. [2020-12-01 15:54:58,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:54:58,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:58,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:58,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 15:54:58,486 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:58,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:58,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1487131178, now seen corresponding path program 1 times [2020-12-01 15:54:58,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:58,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188228600] [2020-12-01 15:54:58,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:54:58,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188228600] [2020-12-01 15:54:58,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:58,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:54:58,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413129911] [2020-12-01 15:54:58,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:54:58,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:58,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:54:58,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:54:58,586 INFO L87 Difference]: Start difference. First operand 104 states and 222 transitions. Second operand 4 states. [2020-12-01 15:54:58,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:58,616 INFO L93 Difference]: Finished difference Result 93 states and 194 transitions. [2020-12-01 15:54:58,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:54:58,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-01 15:54:58,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:58,618 INFO L225 Difference]: With dead ends: 93 [2020-12-01 15:54:58,618 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:54:58,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:54:58,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:54:58,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:54:58,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:54:58,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:54:58,620 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-01 15:54:58,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:58,620 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:54:58,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:54:58,620 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:54:58,621 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:54:58,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 15:54:58,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:54:58 BasicIcfg [2020-12-01 15:54:58,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:54:58,626 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:54:58,626 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:54:58,626 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:54:58,627 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:54:51" (3/4) ... [2020-12-01 15:54:58,632 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:54:58,640 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-01 15:54:58,640 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-01 15:54:58,640 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-01 15:54:58,649 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-01 15:54:58,650 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:54:58,650 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:54:58,650 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:54:58,725 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f4d9116e-6118-4f5b-b579-b8549acf37bc/bin/uautomizer/witness.graphml [2020-12-01 15:54:58,725 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:54:58,729 INFO L168 Benchmark]: Toolchain (without parser) took 8964.18 ms. Allocated memory was 88.1 MB in the beginning and 163.6 MB in the end (delta: 75.5 MB). Free memory was 57.5 MB in the beginning and 84.1 MB in the end (delta: -26.5 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:58,730 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 48.3 MB in the beginning and 48.2 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:54:58,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 754.89 ms. Allocated memory is still 88.1 MB. Free memory was 57.3 MB in the beginning and 45.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:58,731 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.13 ms. Allocated memory is still 88.1 MB. Free memory was 45.1 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:58,732 INFO L168 Benchmark]: Boogie Preprocessor took 33.08 ms. Allocated memory is still 88.1 MB. Free memory was 43.5 MB in the beginning and 41.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:54:58,732 INFO L168 Benchmark]: RCFGBuilder took 658.50 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 41.8 MB in the beginning and 78.4 MB in the end (delta: -36.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:58,733 INFO L168 Benchmark]: TraceAbstraction took 7355.95 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 78.4 MB in the beginning and 87.2 MB in the end (delta: -8.8 MB). Peak memory consumption was 42.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:58,733 INFO L168 Benchmark]: Witness Printer took 99.79 ms. Allocated memory is still 163.6 MB. Free memory was 87.2 MB in the beginning and 84.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:58,741 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 48.3 MB in the beginning and 48.2 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 754.89 ms. Allocated memory is still 88.1 MB. Free memory was 57.3 MB in the beginning and 45.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.13 ms. Allocated memory is still 88.1 MB. Free memory was 45.1 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.08 ms. Allocated memory is still 88.1 MB. Free memory was 43.5 MB in the beginning and 41.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 658.50 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 41.8 MB in the beginning and 78.4 MB in the end (delta: -36.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7355.95 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 78.4 MB in the beginning and 87.2 MB in the end (delta: -8.8 MB). Peak memory consumption was 42.2 MB. Max. memory is 16.1 GB. * Witness Printer took 99.79 ms. Allocated memory is still 163.6 MB. Free memory was 87.2 MB in the beginning and 84.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 961 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.8s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 MoverChecksTotal - PositiveResult [Line: 17]: 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 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 212 SDtfs, 219 SDslu, 336 SDs, 0 SdLazy, 123 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 3979 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...