./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe004_tso.oepc.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_7abca74e-aa26-4a58-b0c2-c8f21cd5c131/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7abca74e-aa26-4a58-b0c2-c8f21cd5c131/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7abca74e-aa26-4a58-b0c2-c8f21cd5c131/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7abca74e-aa26-4a58-b0c2-c8f21cd5c131/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe004_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7abca74e-aa26-4a58-b0c2-c8f21cd5c131/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7abca74e-aa26-4a58-b0c2-c8f21cd5c131/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 5f9b1396844f489e15fac07513801b6ebd902fa1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:58:23,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:23,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:23,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:23,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:23,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:23,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:23,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:23,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:23,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:23,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:23,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:23,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:23,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:23,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:23,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:23,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:23,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:23,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:23,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:23,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:23,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:23,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:23,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:23,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:23,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:23,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:23,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:23,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:23,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:23,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:23,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:23,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:23,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:23,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:23,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:23,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:23,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:23,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:23,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:23,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:23,228 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7abca74e-aa26-4a58-b0c2-c8f21cd5c131/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:58:23,252 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:23,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:23,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:23,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:23,254 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:23,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:23,254 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:58:23,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:58:23,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:58:23,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:23,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:58:23,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:58:23,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:58:23,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:58:23,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:58:23,256 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:23,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:58:23,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:23,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:23,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:58:23,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:58:23,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:23,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:23,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:58:23,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:58:23,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:58:23,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:58:23,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:58:23,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:23,260 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_7abca74e-aa26-4a58-b0c2-c8f21cd5c131/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7abca74e-aa26-4a58-b0c2-c8f21cd5c131/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f9b1396844f489e15fac07513801b6ebd902fa1 [2020-11-28 02:58:23,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:23,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:23,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:23,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:23,612 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:23,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7abca74e-aa26-4a58-b0c2-c8f21cd5c131/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe004_tso.oepc.i [2020-11-28 02:58:23,697 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7abca74e-aa26-4a58-b0c2-c8f21cd5c131/bin/uautomizer/data/70971d81e/fb231e41c666438787b934d64bbeded7/FLAG0691a9356 [2020-11-28 02:58:24,420 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:24,421 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7abca74e-aa26-4a58-b0c2-c8f21cd5c131/sv-benchmarks/c/pthread-wmm/safe004_tso.oepc.i [2020-11-28 02:58:24,436 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7abca74e-aa26-4a58-b0c2-c8f21cd5c131/bin/uautomizer/data/70971d81e/fb231e41c666438787b934d64bbeded7/FLAG0691a9356 [2020-11-28 02:58:24,661 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7abca74e-aa26-4a58-b0c2-c8f21cd5c131/bin/uautomizer/data/70971d81e/fb231e41c666438787b934d64bbeded7 [2020-11-28 02:58:24,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:24,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:58:24,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:24,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:24,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:24,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:24" (1/1) ... [2020-11-28 02:58:24,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d814da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:24, skipping insertion in model container [2020-11-28 02:58:24,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:24" (1/1) ... [2020-11-28 02:58:24,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:24,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:25,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:25,184 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:25,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:25,359 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:25,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25 WrapperNode [2020-11-28 02:58:25,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:25,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:25,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:58:25,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:58:25,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2020-11-28 02:58:25,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2020-11-28 02:58:25,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:25,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:25,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:25,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:25,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2020-11-28 02:58:25,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2020-11-28 02:58:25,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2020-11-28 02:58:25,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2020-11-28 02:58:25,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2020-11-28 02:58:25,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2020-11-28 02:58:25,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... [2020-11-28 02:58:25,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:25,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:25,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:25,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:25,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7abca74e-aa26-4a58-b0c2-c8f21cd5c131/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:58:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 02:58:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:58:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 02:58:25,522 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 02:58:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 02:58:25,523 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 02:58:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 02:58:25,523 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 02:58:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:58:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 02:58:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:25,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:25,525 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 02:58:26,062 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:26,063 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 02:58:26,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:26 BoogieIcfgContainer [2020-11-28 02:58:26,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:26,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:26,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:26,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:26,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:24" (1/3) ... [2020-11-28 02:58:26,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0f8f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:26, skipping insertion in model container [2020-11-28 02:58:26,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:25" (2/3) ... [2020-11-28 02:58:26,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0f8f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:26, skipping insertion in model container [2020-11-28 02:58:26,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:26" (3/3) ... [2020-11-28 02:58:26,076 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2020-11-28 02:58:26,087 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 02:58:26,087 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:26,092 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:58:26,093 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 02:58:26,129 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,130 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,130 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,130 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,131 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,131 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,132 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,132 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,132 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,132 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,133 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,133 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,134 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,134 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,134 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,134 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,135 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,135 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,139 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,140 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,140 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,140 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,149 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,149 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,149 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,150 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,154 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,154 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,154 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,154 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:58:26,157 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 02:58:26,168 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 02:58:26,202 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:26,203 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:58:26,203 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:26,203 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:26,203 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:26,203 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:26,204 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:26,204 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:26,219 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 02:58:26,221 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-28 02:58:26,225 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-28 02:58:26,227 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-28 02:58:26,270 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-28 02:58:26,271 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 02:58:26,274 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 65 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. [2020-11-28 02:58:26,277 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 02:58:27,881 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-28 02:58:28,471 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-28 02:58:28,584 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-28 02:58:28,598 INFO L131 LiptonReduction]: Checked pairs total: 3163 [2020-11-28 02:58:28,599 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-28 02:58:28,606 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-28 02:58:28,651 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-28 02:58:28,653 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-28 02:58:28,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 02:58:28,663 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:28,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:28,664 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:28,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:28,670 INFO L82 PathProgramCache]: Analyzing trace with hash 2115134997, now seen corresponding path program 1 times [2020-11-28 02:58:28,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:28,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617889042] [2020-11-28 02:58:28,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:28,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:28,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617889042] [2020-11-28 02:58:28,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:28,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:58:28,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418011339] [2020-11-28 02:58:28,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:58:28,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:28,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:58:28,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:28,963 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-28 02:58:29,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:29,014 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-28 02:58:29,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:58:29,016 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 02:58:29,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:29,043 INFO L225 Difference]: With dead ends: 362 [2020-11-28 02:58:29,054 INFO L226 Difference]: Without dead ends: 298 [2020-11-28 02:58:29,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:29,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-28 02:58:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-28 02:58:29,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-28 02:58:29,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-28 02:58:29,160 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-28 02:58:29,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:29,161 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-28 02:58:29,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:58:29,163 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-28 02:58:29,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:58:29,168 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:29,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:29,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:58:29,169 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:29,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:29,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1144664430, now seen corresponding path program 1 times [2020-11-28 02:58:29,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:29,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212343522] [2020-11-28 02:58:29,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:29,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212343522] [2020-11-28 02:58:29,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:29,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:58:29,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151282740] [2020-11-28 02:58:29,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:58:29,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:29,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:58:29,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:58:29,297 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-11-28 02:58:29,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:29,327 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-11-28 02:58:29,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:58:29,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 02:58:29,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:29,330 INFO L225 Difference]: With dead ends: 217 [2020-11-28 02:58:29,330 INFO L226 Difference]: Without dead ends: 217 [2020-11-28 02:58:29,331 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 [2020-11-28 02:58:29,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-28 02:58:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-28 02:58:29,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-28 02:58:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-11-28 02:58:29,349 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-11-28 02:58:29,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:29,350 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-11-28 02:58:29,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:58:29,350 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-11-28 02:58:29,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 02:58:29,353 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:29,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:29,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:58:29,354 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:29,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:29,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1523104206, now seen corresponding path program 1 times [2020-11-28 02:58:29,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:29,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713466921] [2020-11-28 02:58:29,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:29,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:29,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713466921] [2020-11-28 02:58:29,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:29,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:58:29,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929416357] [2020-11-28 02:58:29,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:29,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:29,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:29,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:29,465 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-11-28 02:58:29,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:29,492 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-11-28 02:58:29,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:29,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 02:58:29,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:29,494 INFO L225 Difference]: With dead ends: 136 [2020-11-28 02:58:29,494 INFO L226 Difference]: Without dead ends: 136 [2020-11-28 02:58:29,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:29,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-28 02:58:29,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-28 02:58:29,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-28 02:58:29,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-28 02:58:29,501 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-28 02:58:29,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:29,501 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-28 02:58:29,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:29,502 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-28 02:58:29,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 02:58:29,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:29,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:29,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:58:29,504 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:29,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:29,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1616090199, now seen corresponding path program 1 times [2020-11-28 02:58:29,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:29,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764830478] [2020-11-28 02:58:29,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:29,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764830478] [2020-11-28 02:58:29,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:29,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:29,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80901431] [2020-11-28 02:58:29,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:29,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:29,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:29,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:29,569 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-11-28 02:58:29,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:29,600 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-11-28 02:58:29,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:29,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 02:58:29,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:29,601 INFO L225 Difference]: With dead ends: 109 [2020-11-28 02:58:29,601 INFO L226 Difference]: Without dead ends: 109 [2020-11-28 02:58:29,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:29,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-28 02:58:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-28 02:58:29,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-28 02:58:29,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-28 02:58:29,606 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-28 02:58:29,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:29,606 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-28 02:58:29,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:29,606 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-28 02:58:29,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:58:29,608 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:29,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:29,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:58:29,608 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:29,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:29,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1930604432, now seen corresponding path program 1 times [2020-11-28 02:58:29,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:29,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949087557] [2020-11-28 02:58:29,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:29,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:29,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949087557] [2020-11-28 02:58:29,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:29,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:29,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912257968] [2020-11-28 02:58:29,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:29,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:29,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:29,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:29,709 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-11-28 02:58:29,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:29,772 INFO L93 Difference]: Finished difference Result 188 states and 388 transitions. [2020-11-28 02:58:29,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:58:29,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 02:58:29,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:29,774 INFO L225 Difference]: With dead ends: 188 [2020-11-28 02:58:29,774 INFO L226 Difference]: Without dead ends: 124 [2020-11-28 02:58:29,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:58:29,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-28 02:58:29,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2020-11-28 02:58:29,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-28 02:58:29,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 229 transitions. [2020-11-28 02:58:29,779 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 229 transitions. Word has length 18 [2020-11-28 02:58:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:29,779 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 229 transitions. [2020-11-28 02:58:29,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:29,779 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 229 transitions. [2020-11-28 02:58:29,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:58:29,780 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:29,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:29,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:58:29,781 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:29,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:29,781 INFO L82 PathProgramCache]: Analyzing trace with hash -17726670, now seen corresponding path program 2 times [2020-11-28 02:58:29,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:29,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149750441] [2020-11-28 02:58:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:29,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149750441] [2020-11-28 02:58:29,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:29,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:58:29,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578923566] [2020-11-28 02:58:29,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:29,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:29,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:29,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:29,836 INFO L87 Difference]: Start difference. First operand 109 states and 229 transitions. Second operand 4 states. [2020-11-28 02:58:29,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:29,868 INFO L93 Difference]: Finished difference Result 123 states and 251 transitions. [2020-11-28 02:58:29,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:29,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-28 02:58:29,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:29,869 INFO L225 Difference]: With dead ends: 123 [2020-11-28 02:58:29,869 INFO L226 Difference]: Without dead ends: 43 [2020-11-28 02:58:29,869 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 [2020-11-28 02:58:29,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-28 02:58:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-28 02:58:29,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-28 02:58:29,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 69 transitions. [2020-11-28 02:58:29,871 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 69 transitions. Word has length 18 [2020-11-28 02:58:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:29,872 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 69 transitions. [2020-11-28 02:58:29,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:29,872 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2020-11-28 02:58:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:58:29,872 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:29,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:29,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:58:29,873 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:29,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:29,873 INFO L82 PathProgramCache]: Analyzing trace with hash 30994256, now seen corresponding path program 3 times [2020-11-28 02:58:29,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:29,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918217041] [2020-11-28 02:58:29,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:29,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918217041] [2020-11-28 02:58:29,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:29,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:58:29,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740027676] [2020-11-28 02:58:29,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:29,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:29,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:29,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:29,948 INFO L87 Difference]: Start difference. First operand 43 states and 69 transitions. Second operand 4 states. [2020-11-28 02:58:29,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:29,968 INFO L93 Difference]: Finished difference Result 42 states and 68 transitions. [2020-11-28 02:58:29,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:29,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-28 02:58:29,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:29,968 INFO L225 Difference]: With dead ends: 42 [2020-11-28 02:58:29,969 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:58:29,969 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 [2020-11-28 02:58:29,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:58:29,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:58:29,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:58:29,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:58:29,970 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 02:58:29,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:29,970 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:58:29,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:29,970 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:58:29,970 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:58:29,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:58:29,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:29 BasicIcfg [2020-11-28 02:58:29,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:29,974 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:29,974 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:29,974 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:29,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:26" (3/4) ... [2020-11-28 02:58:29,978 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:58:29,984 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 02:58:29,985 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 02:58:29,985 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 02:58:29,989 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 02:58:29,990 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:58:29,990 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:29,990 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:30,037 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7abca74e-aa26-4a58-b0c2-c8f21cd5c131/bin/uautomizer/witness.graphml [2020-11-28 02:58:30,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:30,039 INFO L168 Benchmark]: Toolchain (without parser) took 5369.70 ms. Allocated memory was 138.4 MB in the beginning and 167.8 MB in the end (delta: 29.4 MB). Free memory was 109.3 MB in the beginning and 62.6 MB in the end (delta: 46.7 MB). Peak memory consumption was 75.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:30,040 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 40.5 MB in the beginning and 40.5 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:30,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.10 ms. Allocated memory is still 138.4 MB. Free memory was 109.0 MB in the beginning and 94.7 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:30,041 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.15 ms. Allocated memory is still 138.4 MB. Free memory was 94.7 MB in the beginning and 92.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:30,041 INFO L168 Benchmark]: Boogie Preprocessor took 26.51 ms. Allocated memory is still 138.4 MB. Free memory was 92.6 MB in the beginning and 91.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:30,042 INFO L168 Benchmark]: RCFGBuilder took 610.87 ms. Allocated memory is still 138.4 MB. Free memory was 91.4 MB in the beginning and 111.1 MB in the end (delta: -19.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:30,043 INFO L168 Benchmark]: TraceAbstraction took 3904.33 ms. Allocated memory was 138.4 MB in the beginning and 167.8 MB in the end (delta: 29.4 MB). Free memory was 111.1 MB in the beginning and 65.7 MB in the end (delta: 45.4 MB). Peak memory consumption was 74.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:30,043 INFO L168 Benchmark]: Witness Printer took 64.05 ms. Allocated memory is still 167.8 MB. Free memory was 64.7 MB in the beginning and 62.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:30,046 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 81.8 MB. Free memory was 40.5 MB in the beginning and 40.5 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 689.10 ms. Allocated memory is still 138.4 MB. Free memory was 109.0 MB in the beginning and 94.7 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.15 ms. Allocated memory is still 138.4 MB. Free memory was 94.7 MB in the beginning and 92.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.51 ms. Allocated memory is still 138.4 MB. Free memory was 92.6 MB in the beginning and 91.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 610.87 ms. Allocated memory is still 138.4 MB. Free memory was 91.4 MB in the beginning and 111.1 MB in the end (delta: -19.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3904.33 ms. Allocated memory was 138.4 MB in the beginning and 167.8 MB in the end (delta: 29.4 MB). Free memory was 111.1 MB in the beginning and 65.7 MB in the end (delta: 45.4 MB). Peak memory consumption was 74.0 MB. Max. memory is 16.1 GB. * Witness Printer took 64.05 ms. Allocated memory is still 167.8 MB. Free memory was 64.7 MB in the beginning and 62.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 952 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 85 PlacesBefore, 32 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3163 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: 3.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 139 SDtfs, 76 SDslu, 194 SDs, 0 SdLazy, 72 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...