./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b383e389-51d3-4772-9deb-f0e60232b70a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b383e389-51d3-4772-9deb-f0e60232b70a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b383e389-51d3-4772-9deb-f0e60232b70a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b383e389-51d3-4772-9deb-f0e60232b70a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b383e389-51d3-4772-9deb-f0e60232b70a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b383e389-51d3-4772-9deb-f0e60232b70a/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e5d4029f581c462fcc1266ae50a944afe6a64c5 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:40:30,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:40:30,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:40:30,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:40:30,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:40:30,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:40:30,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:40:30,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:40:30,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:40:30,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:40:30,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:40:30,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:40:30,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:40:30,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:40:30,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:40:30,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:40:30,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:40:30,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:40:30,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:40:30,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:40:30,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:40:30,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:40:30,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:40:30,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:40:30,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:40:30,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:40:30,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:40:30,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:40:30,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:40:30,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:40:30,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:40:30,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:40:30,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:40:30,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:40:30,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:40:30,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:40:30,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:40:30,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:40:30,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:40:30,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:40:30,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:40:30,603 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b383e389-51d3-4772-9deb-f0e60232b70a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 22:40:30,616 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:40:30,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:40:30,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:40:30,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:40:30,617 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:40:30,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:40:30,620 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:40:30,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:40:30,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:40:30,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:40:30,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:40:30,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:40:30,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:40:30,622 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:40:30,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:40:30,622 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:40:30,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:40:30,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:40:30,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:40:30,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:40:30,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:40:30,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:40:30,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:40:30,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:40:30,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:40:30,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:40:30,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:40:30,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:40:30,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b383e389-51d3-4772-9deb-f0e60232b70a/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(__VERIFIER_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 -> 6e5d4029f581c462fcc1266ae50a944afe6a64c5 [2019-11-15 22:40:30,675 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:40:30,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:40:30,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:40:30,689 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:40:30,690 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:40:30,690 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b383e389-51d3-4772-9deb-f0e60232b70a/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i [2019-11-15 22:40:30,758 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b383e389-51d3-4772-9deb-f0e60232b70a/bin/uautomizer/data/85bbae9e1/028cac1314cc4fbaa6688879b7e0f14c/FLAGe152418c5 [2019-11-15 22:40:31,169 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:40:31,170 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b383e389-51d3-4772-9deb-f0e60232b70a/sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i [2019-11-15 22:40:31,184 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b383e389-51d3-4772-9deb-f0e60232b70a/bin/uautomizer/data/85bbae9e1/028cac1314cc4fbaa6688879b7e0f14c/FLAGe152418c5 [2019-11-15 22:40:31,505 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b383e389-51d3-4772-9deb-f0e60232b70a/bin/uautomizer/data/85bbae9e1/028cac1314cc4fbaa6688879b7e0f14c [2019-11-15 22:40:31,507 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:40:31,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:40:31,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:40:31,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:40:31,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:40:31,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:40:31" (1/1) ... [2019-11-15 22:40:31,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9a8632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:31, skipping insertion in model container [2019-11-15 22:40:31,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:40:31" (1/1) ... [2019-11-15 22:40:31,524 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:40:31,576 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:40:32,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:40:32,068 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:40:32,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:40:32,208 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:40:32,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:32 WrapperNode [2019-11-15 22:40:32,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:40:32,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:40:32,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:40:32,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:40:32,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:32" (1/1) ... [2019-11-15 22:40:32,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:32" (1/1) ... [2019-11-15 22:40:32,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:40:32,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:40:32,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:40:32,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:40:32,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:32" (1/1) ... [2019-11-15 22:40:32,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:32" (1/1) ... [2019-11-15 22:40:32,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:32" (1/1) ... [2019-11-15 22:40:32,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:32" (1/1) ... [2019-11-15 22:40:32,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:32" (1/1) ... [2019-11-15 22:40:32,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:32" (1/1) ... [2019-11-15 22:40:32,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:32" (1/1) ... [2019-11-15 22:40:32,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:40:32,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:40:32,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:40:32,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:40:32,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b383e389-51d3-4772-9deb-f0e60232b70a/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 [2019-11-15 22:40:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:40:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-15 22:40:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:40:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:40:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-15 22:40:32,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-15 22:40:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-15 22:40:32,358 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-15 22:40:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-15 22:40:32,358 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-15 22:40:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-11-15 22:40:32,359 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-11-15 22:40:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-15 22:40:32,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:40:32,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:40:32,361 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-15 22:40:32,719 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:40:32,719 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-15 22:40:32,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:40:32 BoogieIcfgContainer [2019-11-15 22:40:32,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:40:32,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:40:32,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:40:32,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:40:32,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:40:31" (1/3) ... [2019-11-15 22:40:32,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7076e4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:40:32, skipping insertion in model container [2019-11-15 22:40:32,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:32" (2/3) ... [2019-11-15 22:40:32,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7076e4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:40:32, skipping insertion in model container [2019-11-15 22:40:32,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:40:32" (3/3) ... [2019-11-15 22:40:32,727 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2019-11-15 22:40:32,760 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,760 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,760 WARN L315 ript$VariableManager]: TermVariabe Thread3_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,761 WARN L315 ript$VariableManager]: TermVariabe Thread3_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,761 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,761 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,761 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,763 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,763 WARN L315 ript$VariableManager]: TermVariabe Thread0_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,763 WARN L315 ript$VariableManager]: TermVariabe Thread0_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,764 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,764 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,764 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,764 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,765 WARN L315 ript$VariableManager]: TermVariabe Thread1_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,765 WARN L315 ript$VariableManager]: TermVariabe Thread1_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,765 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,765 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,765 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,766 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,766 WARN L315 ript$VariableManager]: TermVariabe Thread2_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,766 WARN L315 ript$VariableManager]: TermVariabe Thread2_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,766 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,766 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:40:32,787 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 22:40:32,787 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:40:32,794 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 22:40:32,804 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 22:40:32,822 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:40:32,822 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:40:32,822 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:40:32,822 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:40:32,822 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:40:32,823 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:40:32,823 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:40:32,823 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:40:32,832 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 62 transitions [2019-11-15 22:40:33,127 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5474 states. [2019-11-15 22:40:33,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5474 states. [2019-11-15 22:40:33,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 22:40:33,156 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:33,157 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:33,160 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:33,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:33,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1118685925, now seen corresponding path program 1 times [2019-11-15 22:40:33,172 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:33,173 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250670340] [2019-11-15 22:40:33,173 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:33,173 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:33,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:33,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:33,604 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250670340] [2019-11-15 22:40:33,605 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:40:33,605 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:40:33,606 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729063578] [2019-11-15 22:40:33,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:40:33,610 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:33,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:40:33,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:40:33,626 INFO L87 Difference]: Start difference. First operand 5474 states. Second operand 4 states. [2019-11-15 22:40:33,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:33,773 INFO L93 Difference]: Finished difference Result 5711 states and 21936 transitions. [2019-11-15 22:40:33,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:40:33,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2019-11-15 22:40:33,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:33,831 INFO L225 Difference]: With dead ends: 5711 [2019-11-15 22:40:33,832 INFO L226 Difference]: Without dead ends: 2395 [2019-11-15 22:40:33,833 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:40:33,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2019-11-15 22:40:34,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2395. [2019-11-15 22:40:34,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2395 states. [2019-11-15 22:40:34,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 8939 transitions. [2019-11-15 22:40:34,070 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 8939 transitions. Word has length 37 [2019-11-15 22:40:34,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:34,072 INFO L462 AbstractCegarLoop]: Abstraction has 2395 states and 8939 transitions. [2019-11-15 22:40:34,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:40:34,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 8939 transitions. [2019-11-15 22:40:34,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-15 22:40:34,079 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:34,079 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:34,079 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:34,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:34,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1811625669, now seen corresponding path program 1 times [2019-11-15 22:40:34,080 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:34,080 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002797693] [2019-11-15 22:40:34,080 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:34,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:34,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:34,261 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002797693] [2019-11-15 22:40:34,262 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:40:34,262 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:40:34,262 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605482056] [2019-11-15 22:40:34,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:40:34,264 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:34,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:40:34,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:40:34,265 INFO L87 Difference]: Start difference. First operand 2395 states and 8939 transitions. Second operand 5 states. [2019-11-15 22:40:34,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:34,364 INFO L93 Difference]: Finished difference Result 2566 states and 9323 transitions. [2019-11-15 22:40:34,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:40:34,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-11-15 22:40:34,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:34,388 INFO L225 Difference]: With dead ends: 2566 [2019-11-15 22:40:34,388 INFO L226 Difference]: Without dead ends: 2311 [2019-11-15 22:40:34,389 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:40:34,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2019-11-15 22:40:34,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2311. [2019-11-15 22:40:34,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2311 states. [2019-11-15 22:40:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 8547 transitions. [2019-11-15 22:40:34,535 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 8547 transitions. Word has length 38 [2019-11-15 22:40:34,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:34,536 INFO L462 AbstractCegarLoop]: Abstraction has 2311 states and 8547 transitions. [2019-11-15 22:40:34,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:40:34,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 8547 transitions. [2019-11-15 22:40:34,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-15 22:40:34,543 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:34,544 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:34,544 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:34,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:34,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1590233122, now seen corresponding path program 1 times [2019-11-15 22:40:34,545 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:34,546 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386820225] [2019-11-15 22:40:34,546 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:34,546 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:34,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:34,660 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386820225] [2019-11-15 22:40:34,660 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:40:34,660 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 22:40:34,660 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78128855] [2019-11-15 22:40:34,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:40:34,661 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:34,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:40:34,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:40:34,661 INFO L87 Difference]: Start difference. First operand 2311 states and 8547 transitions. Second operand 6 states. [2019-11-15 22:40:34,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:34,776 INFO L93 Difference]: Finished difference Result 2176 states and 7683 transitions. [2019-11-15 22:40:34,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:40:34,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-11-15 22:40:34,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:34,794 INFO L225 Difference]: With dead ends: 2176 [2019-11-15 22:40:34,794 INFO L226 Difference]: Without dead ends: 1933 [2019-11-15 22:40:34,795 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-15 22:40:34,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2019-11-15 22:40:34,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1933. [2019-11-15 22:40:34,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1933 states. [2019-11-15 22:40:34,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 6909 transitions. [2019-11-15 22:40:34,871 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 6909 transitions. Word has length 39 [2019-11-15 22:40:34,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:34,872 INFO L462 AbstractCegarLoop]: Abstraction has 1933 states and 6909 transitions. [2019-11-15 22:40:34,872 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:40:34,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 6909 transitions. [2019-11-15 22:40:34,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-15 22:40:34,878 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:34,878 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:34,879 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:34,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:34,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1091525354, now seen corresponding path program 1 times [2019-11-15 22:40:34,879 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:34,880 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700198783] [2019-11-15 22:40:34,880 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:34,880 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:34,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:35,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700198783] [2019-11-15 22:40:35,014 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:40:35,014 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 22:40:35,014 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265577747] [2019-11-15 22:40:35,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:40:35,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:35,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:40:35,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:40:35,016 INFO L87 Difference]: Start difference. First operand 1933 states and 6909 transitions. Second operand 7 states. [2019-11-15 22:40:35,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:35,164 INFO L93 Difference]: Finished difference Result 1366 states and 4533 transitions. [2019-11-15 22:40:35,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 22:40:35,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2019-11-15 22:40:35,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:35,175 INFO L225 Difference]: With dead ends: 1366 [2019-11-15 22:40:35,175 INFO L226 Difference]: Without dead ends: 1177 [2019-11-15 22:40:35,175 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-15 22:40:35,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2019-11-15 22:40:35,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1177. [2019-11-15 22:40:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2019-11-15 22:40:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 3885 transitions. [2019-11-15 22:40:35,216 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 3885 transitions. Word has length 40 [2019-11-15 22:40:35,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:35,217 INFO L462 AbstractCegarLoop]: Abstraction has 1177 states and 3885 transitions. [2019-11-15 22:40:35,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:40:35,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 3885 transitions. [2019-11-15 22:40:35,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-15 22:40:35,220 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:35,220 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:35,221 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:35,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:35,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1566287999, now seen corresponding path program 1 times [2019-11-15 22:40:35,221 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:35,221 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860687154] [2019-11-15 22:40:35,222 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:35,222 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:35,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:35,372 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860687154] [2019-11-15 22:40:35,372 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:40:35,372 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-15 22:40:35,372 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159713048] [2019-11-15 22:40:35,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 22:40:35,373 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:35,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 22:40:35,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:40:35,374 INFO L87 Difference]: Start difference. First operand 1177 states and 3885 transitions. Second operand 8 states. [2019-11-15 22:40:35,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:35,515 INFO L93 Difference]: Finished difference Result 1726 states and 5778 transitions. [2019-11-15 22:40:35,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:40:35,516 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2019-11-15 22:40:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:35,523 INFO L225 Difference]: With dead ends: 1726 [2019-11-15 22:40:35,524 INFO L226 Difference]: Without dead ends: 877 [2019-11-15 22:40:35,524 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-15 22:40:35,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2019-11-15 22:40:35,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2019-11-15 22:40:35,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2019-11-15 22:40:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 2889 transitions. [2019-11-15 22:40:35,557 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 2889 transitions. Word has length 41 [2019-11-15 22:40:35,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:35,558 INFO L462 AbstractCegarLoop]: Abstraction has 877 states and 2889 transitions. [2019-11-15 22:40:35,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 22:40:35,558 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 2889 transitions. [2019-11-15 22:40:35,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-15 22:40:35,560 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:35,560 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:35,563 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:35,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:35,563 INFO L82 PathProgramCache]: Analyzing trace with hash -828181101, now seen corresponding path program 2 times [2019-11-15 22:40:35,563 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:35,564 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147340121] [2019-11-15 22:40:35,564 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:35,564 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:35,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:35,695 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147340121] [2019-11-15 22:40:35,695 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:40:35,695 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 22:40:35,695 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224528172] [2019-11-15 22:40:35,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:40:35,696 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:35,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:40:35,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:40:35,696 INFO L87 Difference]: Start difference. First operand 877 states and 2889 transitions. Second operand 7 states. [2019-11-15 22:40:35,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:35,809 INFO L93 Difference]: Finished difference Result 1390 states and 4671 transitions. [2019-11-15 22:40:35,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:40:35,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-11-15 22:40:35,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:35,816 INFO L225 Difference]: With dead ends: 1390 [2019-11-15 22:40:35,816 INFO L226 Difference]: Without dead ends: 769 [2019-11-15 22:40:35,817 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-15 22:40:35,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2019-11-15 22:40:35,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 769. [2019-11-15 22:40:35,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2019-11-15 22:40:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 2577 transitions. [2019-11-15 22:40:35,841 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 2577 transitions. Word has length 41 [2019-11-15 22:40:35,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:35,841 INFO L462 AbstractCegarLoop]: Abstraction has 769 states and 2577 transitions. [2019-11-15 22:40:35,841 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:40:35,841 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2577 transitions. [2019-11-15 22:40:35,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-15 22:40:35,844 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:35,845 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:35,845 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:35,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:35,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1424600153, now seen corresponding path program 3 times [2019-11-15 22:40:35,845 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:35,845 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81179659] [2019-11-15 22:40:35,846 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:35,846 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:35,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:35,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81179659] [2019-11-15 22:40:35,984 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:40:35,985 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 22:40:35,985 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325087030] [2019-11-15 22:40:35,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:40:35,985 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:35,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:40:35,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:40:35,986 INFO L87 Difference]: Start difference. First operand 769 states and 2577 transitions. Second operand 7 states. [2019-11-15 22:40:36,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:36,208 INFO L93 Difference]: Finished difference Result 1255 states and 4278 transitions. [2019-11-15 22:40:36,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:40:36,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-11-15 22:40:36,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:36,215 INFO L225 Difference]: With dead ends: 1255 [2019-11-15 22:40:36,215 INFO L226 Difference]: Without dead ends: 718 [2019-11-15 22:40:36,216 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-15 22:40:36,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2019-11-15 22:40:36,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2019-11-15 22:40:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2019-11-15 22:40:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 2433 transitions. [2019-11-15 22:40:36,239 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 2433 transitions. Word has length 41 [2019-11-15 22:40:36,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:36,239 INFO L462 AbstractCegarLoop]: Abstraction has 718 states and 2433 transitions. [2019-11-15 22:40:36,239 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:40:36,239 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 2433 transitions. [2019-11-15 22:40:36,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-15 22:40:36,241 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:36,241 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:36,241 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:36,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:36,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1587926817, now seen corresponding path program 4 times [2019-11-15 22:40:36,242 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:36,242 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565158915] [2019-11-15 22:40:36,242 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:36,243 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:36,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:36,389 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565158915] [2019-11-15 22:40:36,389 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:40:36,389 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 22:40:36,389 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773727831] [2019-11-15 22:40:36,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:40:36,390 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:36,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:40:36,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:40:36,391 INFO L87 Difference]: Start difference. First operand 718 states and 2433 transitions. Second operand 7 states. [2019-11-15 22:40:36,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:36,491 INFO L93 Difference]: Finished difference Result 556 states and 1839 transitions. [2019-11-15 22:40:36,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:40:36,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-11-15 22:40:36,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:36,492 INFO L225 Difference]: With dead ends: 556 [2019-11-15 22:40:36,492 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 22:40:36,493 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-15 22:40:36,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 22:40:36,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 22:40:36,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 22:40:36,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 22:40:36,493 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2019-11-15 22:40:36,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:36,494 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:40:36,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:40:36,494 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 22:40:36,494 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 22:40:36,497 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-15 22:40:36,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:40:36 BasicIcfg [2019-11-15 22:40:36,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:40:36,503 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:40:36,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:40:36,503 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:40:36,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:40:32" (3/4) ... [2019-11-15 22:40:36,507 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 22:40:36,514 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-15 22:40:36,514 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-15 22:40:36,514 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-15 22:40:36,514 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-11-15 22:40:36,530 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-15 22:40:36,530 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 22:40:36,589 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b383e389-51d3-4772-9deb-f0e60232b70a/bin/uautomizer/witness.graphml [2019-11-15 22:40:36,590 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:40:36,592 INFO L168 Benchmark]: Toolchain (without parser) took 5082.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.2 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -201.3 MB). Peak memory consumption was 9.0 MB. Max. memory is 11.5 GB. [2019-11-15 22:40:36,592 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:40:36,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -159.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-15 22:40:36,594 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:40:36,595 INFO L168 Benchmark]: Boogie Preprocessor took 26.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:40:36,595 INFO L168 Benchmark]: RCFGBuilder took 440.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-11-15 22:40:36,595 INFO L168 Benchmark]: TraceAbstraction took 3781.05 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -77.0 MB). Peak memory consumption was 559.6 kB. Max. memory is 11.5 GB. [2019-11-15 22:40:36,596 INFO L168 Benchmark]: Witness Printer took 86.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 11.5 GB. [2019-11-15 22:40:36,598 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 699.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -159.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 440.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3781.05 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -77.0 MB). Peak memory consumption was 559.6 kB. Max. memory is 11.5 GB. * Witness Printer took 86.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 9 procedures, 82 locations, 1 error locations. Result: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 462 SDtfs, 750 SDslu, 1245 SDs, 0 SdLazy, 173 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5474occurred 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: 0.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 318 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 310 ConstructedInterpolants, 0 QuantifiedInterpolants, 36630 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...