./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_tso.opt.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_51009c10-ac62-4e10-94ae-132df8d01790/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_51009c10-ac62-4e10-94ae-132df8d01790/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_51009c10-ac62-4e10-94ae-132df8d01790/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_51009c10-ac62-4e10-94ae-132df8d01790/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_51009c10-ac62-4e10-94ae-132df8d01790/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_51009c10-ac62-4e10-94ae-132df8d01790/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 acb4e4cf9618679cb89bb556ee2ad72be1e1c078 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 23:25:13,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:25:13,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:25:13,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:25:13,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:25:13,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:25:13,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:25:13,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:25:13,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:25:13,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:25:13,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:25:13,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:25:13,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:25:13,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:25:13,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:25:13,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:25:13,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:25:13,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:25:13,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:25:13,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:25:13,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:25:13,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:25:13,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:25:13,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:25:13,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:25:13,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:25:13,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:25:13,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:25:13,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:25:13,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:25:13,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:25:13,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:25:13,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:25:13,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:25:13,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:25:13,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:25:13,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:25:13,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:25:13,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:25:13,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:25:13,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:25:13,760 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_51009c10-ac62-4e10-94ae-132df8d01790/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:25:13,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:25:13,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:25:13,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:25:13,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:25:13,826 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:25:13,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:25:13,827 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:25:13,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:25:13,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:25:13,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:25:13,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:25:13,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:25:13,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:25:13,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:25:13,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:25:13,831 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:25:13,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:25:13,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:25:13,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:25:13,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:25:13,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:25:13,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:25:13,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:25:13,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:25:13,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:25:13,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:25:13,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:25:13,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:25:13,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:25:13,835 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_51009c10-ac62-4e10-94ae-132df8d01790/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_51009c10-ac62-4e10-94ae-132df8d01790/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acb4e4cf9618679cb89bb556ee2ad72be1e1c078 [2020-11-29 23:25:14,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:25:14,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:25:14,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:25:14,243 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:25:14,245 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:25:14,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_51009c10-ac62-4e10-94ae-132df8d01790/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i [2020-11-29 23:25:14,342 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_51009c10-ac62-4e10-94ae-132df8d01790/bin/uautomizer/data/6399e311e/0704683d0c6446b7a36263db1a96ffc9/FLAGfbed7391a [2020-11-29 23:25:15,007 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:25:15,008 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_51009c10-ac62-4e10-94ae-132df8d01790/sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i [2020-11-29 23:25:15,047 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_51009c10-ac62-4e10-94ae-132df8d01790/bin/uautomizer/data/6399e311e/0704683d0c6446b7a36263db1a96ffc9/FLAGfbed7391a [2020-11-29 23:25:15,255 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_51009c10-ac62-4e10-94ae-132df8d01790/bin/uautomizer/data/6399e311e/0704683d0c6446b7a36263db1a96ffc9 [2020-11-29 23:25:15,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:25:15,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:25:15,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:25:15,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:25:15,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:25:15,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:25:15" (1/1) ... [2020-11-29 23:25:15,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1530918b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:25:15, skipping insertion in model container [2020-11-29 23:25:15,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:25:15" (1/1) ... [2020-11-29 23:25:15,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:25:15,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:25:15,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:25:15,968 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:25:16,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:25:16,124 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:25:16,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:25:16 WrapperNode [2020-11-29 23:25:16,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:25:16,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:25:16,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:25:16,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:25:16,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:25:16" (1/1) ... [2020-11-29 23:25:16,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:25:16" (1/1) ... [2020-11-29 23:25:16,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:25:16,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:25:16,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:25:16,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:25:16,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:25:16" (1/1) ... [2020-11-29 23:25:16,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:25:16" (1/1) ... [2020-11-29 23:25:16,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:25:16" (1/1) ... [2020-11-29 23:25:16,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:25:16" (1/1) ... [2020-11-29 23:25:16,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:25:16" (1/1) ... [2020-11-29 23:25:16,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:25:16" (1/1) ... [2020-11-29 23:25:16,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:25:16" (1/1) ... [2020-11-29 23:25:16,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:25:16,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:25:16,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:25:16,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:25:16,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:25:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_51009c10-ac62-4e10-94ae-132df8d01790/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 23:25:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:25:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 23:25:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:25:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:25:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-29 23:25:16,338 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-29 23:25:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-29 23:25:16,339 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-29 23:25:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-29 23:25:16,339 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-29 23:25:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:25:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 23:25:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:25:16,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:25:16,342 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 23:25:16,932 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:25:16,933 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 23:25:16,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:25:16 BoogieIcfgContainer [2020-11-29 23:25:16,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:25:16,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:25:16,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:25:16,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:25:16,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:25:15" (1/3) ... [2020-11-29 23:25:16,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6265221d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:25:16, skipping insertion in model container [2020-11-29 23:25:16,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:25:16" (2/3) ... [2020-11-29 23:25:16,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6265221d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:25:16, skipping insertion in model container [2020-11-29 23:25:16,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:25:16" (3/3) ... [2020-11-29 23:25:16,949 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2020-11-29 23:25:16,970 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 23:25:16,971 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:25:16,977 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:25:16,978 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 23:25:17,027 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,027 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,027 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,028 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,028 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,028 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,029 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,029 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,029 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,029 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,029 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,029 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,030 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,030 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,031 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,033 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,034 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,039 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,040 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,040 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,040 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,046 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,046 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,047 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:25:17,056 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 23:25:17,076 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 23:25:17,114 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:25:17,115 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:25:17,115 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:25:17,115 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:25:17,115 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:25:17,115 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:25:17,116 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:25:17,116 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:25:17,129 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 23:25:17,131 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-29 23:25:17,134 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-29 23:25:17,135 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-29 23:25:17,223 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-29 23:25:17,224 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 23:25:17,228 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 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. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-29 23:25:17,244 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-29 23:25:19,669 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2020-11-29 23:25:19,937 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-11-29 23:25:20,166 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-29 23:25:20,273 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-29 23:25:20,788 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-29 23:25:20,923 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-29 23:25:20,928 INFO L131 LiptonReduction]: Checked pairs total: 2774 [2020-11-29 23:25:20,928 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-11-29 23:25:20,935 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-29 23:25:20,980 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-29 23:25:20,983 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-29 23:25:20,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 23:25:20,991 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:25:20,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:25:20,993 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:25:20,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:25:20,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1189021961, now seen corresponding path program 1 times [2020-11-29 23:25:21,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:25:21,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639367361] [2020-11-29 23:25:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:25:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:25:21,306 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 23:25:21,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639367361] [2020-11-29 23:25:21,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:25:21,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 23:25:21,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876289233] [2020-11-29 23:25:21,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:25:21,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:25:21,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:25:21,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:25:21,337 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-29 23:25:21,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:25:21,415 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-29 23:25:21,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:25:21,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 23:25:21,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:25:21,442 INFO L225 Difference]: With dead ends: 282 [2020-11-29 23:25:21,443 INFO L226 Difference]: Without dead ends: 218 [2020-11-29 23:25:21,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:25:21,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-29 23:25:21,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-29 23:25:21,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-29 23:25:21,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-29 23:25:21,525 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-29 23:25:21,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:25:21,526 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-29 23:25:21,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:25:21,527 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-29 23:25:21,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 23:25:21,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:25:21,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:25:21,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:25:21,529 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:25:21,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:25:21,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1771488223, now seen corresponding path program 1 times [2020-11-29 23:25:21,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:25:21,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851872118] [2020-11-29 23:25:21,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:25:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:25:21,671 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 23:25:21,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851872118] [2020-11-29 23:25:21,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:25:21,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:25:21,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143153999] [2020-11-29 23:25:21,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:25:21,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:25:21,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:25:21,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:25:21,675 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-11-29 23:25:21,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:25:21,710 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-11-29 23:25:21,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:25:21,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-29 23:25:21,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:25:21,719 INFO L225 Difference]: With dead ends: 202 [2020-11-29 23:25:21,719 INFO L226 Difference]: Without dead ends: 202 [2020-11-29 23:25:21,723 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 23:25:21,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-29 23:25:21,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-29 23:25:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-29 23:25:21,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-11-29 23:25:21,769 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-11-29 23:25:21,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:25:21,770 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-11-29 23:25:21,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:25:21,771 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-11-29 23:25:21,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:25:21,775 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:25:21,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:25:21,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:25:21,776 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:25:21,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:25:21,777 INFO L82 PathProgramCache]: Analyzing trace with hash -918442191, now seen corresponding path program 1 times [2020-11-29 23:25:21,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:25:21,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402486063] [2020-11-29 23:25:21,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:25:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:25:21,900 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 23:25:21,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402486063] [2020-11-29 23:25:21,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:25:21,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 23:25:21,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800826213] [2020-11-29 23:25:21,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:25:21,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:25:21,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:25:21,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:25:21,903 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-11-29 23:25:21,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:25:21,921 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-11-29 23:25:21,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:25:21,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-29 23:25:21,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:25:21,926 INFO L225 Difference]: With dead ends: 198 [2020-11-29 23:25:21,926 INFO L226 Difference]: Without dead ends: 198 [2020-11-29 23:25:21,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:25:21,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-29 23:25:21,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-11-29 23:25:21,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-11-29 23:25:21,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-11-29 23:25:21,947 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 10 [2020-11-29 23:25:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:25:21,947 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-11-29 23:25:21,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:25:21,948 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-11-29 23:25:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 23:25:21,950 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:25:21,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:25:21,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 23:25:21,951 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:25:21,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:25:21,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1593061887, now seen corresponding path program 1 times [2020-11-29 23:25:21,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:25:21,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036405839] [2020-11-29 23:25:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:25:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:25:22,028 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 23:25:22,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036405839] [2020-11-29 23:25:22,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:25:22,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 23:25:22,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68429197] [2020-11-29 23:25:22,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:25:22,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:25:22,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:25:22,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:25:22,033 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 3 states. [2020-11-29 23:25:22,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:25:22,043 INFO L93 Difference]: Finished difference Result 192 states and 511 transitions. [2020-11-29 23:25:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:25:22,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-29 23:25:22,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:25:22,046 INFO L225 Difference]: With dead ends: 192 [2020-11-29 23:25:22,046 INFO L226 Difference]: Without dead ends: 192 [2020-11-29 23:25:22,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:25:22,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-11-29 23:25:22,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-11-29 23:25:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-11-29 23:25:22,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 511 transitions. [2020-11-29 23:25:22,076 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 511 transitions. Word has length 11 [2020-11-29 23:25:22,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:25:22,077 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 511 transitions. [2020-11-29 23:25:22,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:25:22,077 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 511 transitions. [2020-11-29 23:25:22,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:25:22,083 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:25:22,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:25:22,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 23:25:22,084 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:25:22,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:25:22,085 INFO L82 PathProgramCache]: Analyzing trace with hash 2114610558, now seen corresponding path program 1 times [2020-11-29 23:25:22,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:25:22,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297870935] [2020-11-29 23:25:22,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:25:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:25:22,173 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 23:25:22,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297870935] [2020-11-29 23:25:22,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:25:22,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:25:22,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732618834] [2020-11-29 23:25:22,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:25:22,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:25:22,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:25:22,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:25:22,175 INFO L87 Difference]: Start difference. First operand 192 states and 511 transitions. Second operand 3 states. [2020-11-29 23:25:22,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:25:22,206 INFO L93 Difference]: Finished difference Result 248 states and 635 transitions. [2020-11-29 23:25:22,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:25:22,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-29 23:25:22,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:25:22,216 INFO L225 Difference]: With dead ends: 248 [2020-11-29 23:25:22,217 INFO L226 Difference]: Without dead ends: 200 [2020-11-29 23:25:22,217 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 23:25:22,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-29 23:25:22,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 188. [2020-11-29 23:25:22,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-11-29 23:25:22,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 475 transitions. [2020-11-29 23:25:22,236 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 475 transitions. Word has length 12 [2020-11-29 23:25:22,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:25:22,236 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 475 transitions. [2020-11-29 23:25:22,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:25:22,237 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 475 transitions. [2020-11-29 23:25:22,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:25:22,238 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:25:22,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:25:22,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 23:25:22,238 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:25:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:25:22,239 INFO L82 PathProgramCache]: Analyzing trace with hash 2115787814, now seen corresponding path program 1 times [2020-11-29 23:25:22,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:25:22,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297225077] [2020-11-29 23:25:22,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:25:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:25:22,324 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 23:25:22,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297225077] [2020-11-29 23:25:22,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:25:22,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:25:22,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122967590] [2020-11-29 23:25:22,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:25:22,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:25:22,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:25:22,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:25:22,327 INFO L87 Difference]: Start difference. First operand 188 states and 475 transitions. Second operand 4 states. [2020-11-29 23:25:22,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:25:22,376 INFO L93 Difference]: Finished difference Result 260 states and 643 transitions. [2020-11-29 23:25:22,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:25:22,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 23:25:22,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:25:22,380 INFO L225 Difference]: With dead ends: 260 [2020-11-29 23:25:22,380 INFO L226 Difference]: Without dead ends: 188 [2020-11-29 23:25:22,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:25:22,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-11-29 23:25:22,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-11-29 23:25:22,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-11-29 23:25:22,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 467 transitions. [2020-11-29 23:25:22,391 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 467 transitions. Word has length 12 [2020-11-29 23:25:22,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:25:22,391 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 467 transitions. [2020-11-29 23:25:22,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:25:22,391 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 467 transitions. [2020-11-29 23:25:22,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:25:22,393 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:25:22,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:25:22,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 23:25:22,393 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:25:22,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:25:22,395 INFO L82 PathProgramCache]: Analyzing trace with hash 2140264484, now seen corresponding path program 2 times [2020-11-29 23:25:22,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:25:22,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061474138] [2020-11-29 23:25:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:25:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:25:22,479 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 23:25:22,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061474138] [2020-11-29 23:25:22,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:25:22,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:25:22,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649356829] [2020-11-29 23:25:22,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:25:22,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:25:22,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:25:22,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:25:22,481 INFO L87 Difference]: Start difference. First operand 188 states and 467 transitions. Second operand 4 states. [2020-11-29 23:25:22,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:25:22,535 INFO L93 Difference]: Finished difference Result 221 states and 507 transitions. [2020-11-29 23:25:22,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:25:22,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 23:25:22,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:25:22,538 INFO L225 Difference]: With dead ends: 221 [2020-11-29 23:25:22,538 INFO L226 Difference]: Without dead ends: 157 [2020-11-29 23:25:22,538 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 [2020-11-29 23:25:22,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-29 23:25:22,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-11-29 23:25:22,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-29 23:25:22,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 352 transitions. [2020-11-29 23:25:22,545 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 352 transitions. Word has length 12 [2020-11-29 23:25:22,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:25:22,546 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 352 transitions. [2020-11-29 23:25:22,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:25:22,546 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 352 transitions. [2020-11-29 23:25:22,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:25:22,547 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:25:22,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:25:22,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 23:25:22,547 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:25:22,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:25:22,548 INFO L82 PathProgramCache]: Analyzing trace with hash 596662620, now seen corresponding path program 1 times [2020-11-29 23:25:22,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:25:22,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137851104] [2020-11-29 23:25:22,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:25:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:25:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:25:22,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137851104] [2020-11-29 23:25:22,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:25:22,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:25:22,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447878379] [2020-11-29 23:25:22,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:25:22,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:25:22,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:25:22,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:25:22,669 INFO L87 Difference]: Start difference. First operand 157 states and 352 transitions. Second operand 5 states. [2020-11-29 23:25:22,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:25:22,758 INFO L93 Difference]: Finished difference Result 159 states and 336 transitions. [2020-11-29 23:25:22,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:25:22,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-29 23:25:22,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:25:22,765 INFO L225 Difference]: With dead ends: 159 [2020-11-29 23:25:22,765 INFO L226 Difference]: Without dead ends: 122 [2020-11-29 23:25:22,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:25:22,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-29 23:25:22,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-11-29 23:25:22,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-29 23:25:22,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 253 transitions. [2020-11-29 23:25:22,771 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 253 transitions. Word has length 13 [2020-11-29 23:25:22,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:25:22,771 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 253 transitions. [2020-11-29 23:25:22,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:25:22,772 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 253 transitions. [2020-11-29 23:25:22,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:25:22,779 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:25:22,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:25:22,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 23:25:22,780 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:25:22,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:25:22,781 INFO L82 PathProgramCache]: Analyzing trace with hash 2125100997, now seen corresponding path program 1 times [2020-11-29 23:25:22,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:25:22,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797018497] [2020-11-29 23:25:22,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:25:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:25:22,916 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 23:25:22,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797018497] [2020-11-29 23:25:22,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:25:22,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:25:22,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298981235] [2020-11-29 23:25:22,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:25:22,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:25:22,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:25:22,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:25:22,919 INFO L87 Difference]: Start difference. First operand 122 states and 253 transitions. Second operand 6 states. [2020-11-29 23:25:23,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:25:23,001 INFO L93 Difference]: Finished difference Result 118 states and 243 transitions. [2020-11-29 23:25:23,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:25:23,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-29 23:25:23,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:25:23,004 INFO L225 Difference]: With dead ends: 118 [2020-11-29 23:25:23,004 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 23:25:23,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:25:23,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 23:25:23,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-29 23:25:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 23:25:23,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-11-29 23:25:23,008 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-11-29 23:25:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:25:23,008 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-11-29 23:25:23,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:25:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-11-29 23:25:23,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 23:25:23,009 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:25:23,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:25:23,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 23:25:23,009 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:25:23,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:25:23,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2097589764, now seen corresponding path program 1 times [2020-11-29 23:25:23,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:25:23,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832703154] [2020-11-29 23:25:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:25:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:25:23,081 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 23:25:23,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832703154] [2020-11-29 23:25:23,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:25:23,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:25:23,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626787781] [2020-11-29 23:25:23,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:25:23,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:25:23,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:25:23,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:25:23,084 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-11-29 23:25:23,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:25:23,115 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-11-29 23:25:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:25:23,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-29 23:25:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:25:23,116 INFO L225 Difference]: With dead ends: 63 [2020-11-29 23:25:23,117 INFO L226 Difference]: Without dead ends: 35 [2020-11-29 23:25:23,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:25:23,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-29 23:25:23,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-29 23:25:23,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 23:25:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-11-29 23:25:23,119 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-11-29 23:25:23,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:25:23,119 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-11-29 23:25:23,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:25:23,121 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-11-29 23:25:23,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 23:25:23,122 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:25:23,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:25:23,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 23:25:23,123 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:25:23,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:25:23,124 INFO L82 PathProgramCache]: Analyzing trace with hash -281731452, now seen corresponding path program 2 times [2020-11-29 23:25:23,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:25:23,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654118128] [2020-11-29 23:25:23,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:25:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:25:23,182 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 23:25:23,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654118128] [2020-11-29 23:25:23,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:25:23,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:25:23,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046096772] [2020-11-29 23:25:23,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:25:23,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:25:23,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:25:23,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:25:23,184 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-11-29 23:25:23,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:25:23,216 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-11-29 23:25:23,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:25:23,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-29 23:25:23,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:25:23,217 INFO L225 Difference]: With dead ends: 34 [2020-11-29 23:25:23,217 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:25:23,218 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 [2020-11-29 23:25:23,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:25:23,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:25:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:25:23,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:25:23,219 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-29 23:25:23,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:25:23,219 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:25:23,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:25:23,219 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:25:23,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:25:23,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 23:25:23,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:25:23 BasicIcfg [2020-11-29 23:25:23,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:25:23,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:25:23,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:25:23,229 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:25:23,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:25:16" (3/4) ... [2020-11-29 23:25:23,236 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:25:23,245 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-29 23:25:23,245 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-29 23:25:23,245 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-29 23:25:23,254 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 23:25:23,258 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 23:25:23,258 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:25:23,259 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:25:23,331 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_51009c10-ac62-4e10-94ae-132df8d01790/bin/uautomizer/witness.graphml [2020-11-29 23:25:23,332 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:25:23,333 INFO L168 Benchmark]: Toolchain (without parser) took 8072.90 ms. Allocated memory was 92.3 MB in the beginning and 142.6 MB in the end (delta: 50.3 MB). Free memory was 60.9 MB in the beginning and 80.2 MB in the end (delta: -19.3 MB). Peak memory consumption was 30.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:25:23,334 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 92.3 MB. Free memory is still 49.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:25:23,334 INFO L168 Benchmark]: CACSL2BoogieTranslator took 862.70 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 60.6 MB in the beginning and 73.6 MB in the end (delta: -13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:25:23,335 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.09 ms. Allocated memory is still 117.4 MB. Free memory was 73.6 MB in the beginning and 72.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:25:23,335 INFO L168 Benchmark]: Boogie Preprocessor took 43.83 ms. Allocated memory is still 117.4 MB. Free memory was 72.2 MB in the beginning and 70.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:25:23,336 INFO L168 Benchmark]: RCFGBuilder took 705.59 ms. Allocated memory is still 117.4 MB. Free memory was 70.8 MB in the beginning and 48.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:25:23,336 INFO L168 Benchmark]: TraceAbstraction took 6283.95 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 48.4 MB in the beginning and 83.3 MB in the end (delta: -34.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:25:23,337 INFO L168 Benchmark]: Witness Printer took 103.28 ms. Allocated memory is still 142.6 MB. Free memory was 83.3 MB in the beginning and 80.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:25:23,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 92.3 MB. Free memory is still 49.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 862.70 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 60.6 MB in the beginning and 73.6 MB in the end (delta: -13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.09 ms. Allocated memory is still 117.4 MB. Free memory was 73.6 MB in the beginning and 72.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.83 ms. Allocated memory is still 117.4 MB. Free memory was 72.2 MB in the beginning and 70.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 705.59 ms. Allocated memory is still 117.4 MB. Free memory was 70.8 MB in the beginning and 48.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6283.95 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 48.4 MB in the beginning and 83.3 MB in the end (delta: -34.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 103.28 ms. Allocated memory is still 142.6 MB. Free memory was 83.3 MB in the beginning and 80.2 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 891 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 55 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.7s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2774 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 220 SDtfs, 143 SDslu, 240 SDs, 0 SdLazy, 133 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 11 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 4359 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...