./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_pso.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_918c47ef-c12c-4dbc-83ed-2c5b29ea46da/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_918c47ef-c12c-4dbc-83ed-2c5b29ea46da/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_918c47ef-c12c-4dbc-83ed-2c5b29ea46da/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_918c47ef-c12c-4dbc-83ed-2c5b29ea46da/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_918c47ef-c12c-4dbc-83ed-2c5b29ea46da/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_918c47ef-c12c-4dbc-83ed-2c5b29ea46da/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 2f25fb98801907d5459b81c5eceb2ebf3e88cd3b .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 22:20:27,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:20:27,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:20:27,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:20:27,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:20:27,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:20:27,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:20:27,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:20:27,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:20:27,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:20:27,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:20:27,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:20:27,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:20:27,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:20:27,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:20:27,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:20:27,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:20:27,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:20:27,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:20:27,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:20:27,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:20:27,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:20:27,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:20:27,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:20:27,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:20:27,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:20:27,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:20:27,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:20:27,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:20:27,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:20:27,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:20:27,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:20:27,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:20:27,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:20:27,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:20:27,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:20:27,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:20:27,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:20:27,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:20:27,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:20:27,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:20:27,501 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_918c47ef-c12c-4dbc-83ed-2c5b29ea46da/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 22:20:27,525 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:20:27,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:20:27,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:20:27,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:20:27,537 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:20:27,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:20:27,538 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:20:27,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:20:27,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:20:27,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:20:27,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:20:27,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:20:27,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:20:27,540 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:20:27,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:20:27,540 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:20:27,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:20:27,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:20:27,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:20:27,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:20:27,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:20:27,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:20:27,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:20:27,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:20:27,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:20:27,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:20:27,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:20:27,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:20:27,544 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_918c47ef-c12c-4dbc-83ed-2c5b29ea46da/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 -> 2f25fb98801907d5459b81c5eceb2ebf3e88cd3b [2019-11-15 22:20:27,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:20:27,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:20:27,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:20:27,597 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:20:27,597 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:20:27,599 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_918c47ef-c12c-4dbc-83ed-2c5b29ea46da/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i [2019-11-15 22:20:27,658 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_918c47ef-c12c-4dbc-83ed-2c5b29ea46da/bin/uautomizer/data/90f5848d7/daca12ae501f4dc98d882ad283be9796/FLAGf74319344 [2019-11-15 22:20:28,162 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:20:28,163 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_918c47ef-c12c-4dbc-83ed-2c5b29ea46da/sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i [2019-11-15 22:20:28,184 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_918c47ef-c12c-4dbc-83ed-2c5b29ea46da/bin/uautomizer/data/90f5848d7/daca12ae501f4dc98d882ad283be9796/FLAGf74319344 [2019-11-15 22:20:28,471 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_918c47ef-c12c-4dbc-83ed-2c5b29ea46da/bin/uautomizer/data/90f5848d7/daca12ae501f4dc98d882ad283be9796 [2019-11-15 22:20:28,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:20:28,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:20:28,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:20:28,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:20:28,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:20:28,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:20:28" (1/1) ... [2019-11-15 22:20:28,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30031fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:20:28, skipping insertion in model container [2019-11-15 22:20:28,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:20:28" (1/1) ... [2019-11-15 22:20:28,489 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:20:28,533 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:20:29,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:20:29,044 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:20:29,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:20:29,180 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:20:29,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:20:29 WrapperNode [2019-11-15 22:20:29,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:20:29,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:20:29,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:20:29,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:20:29,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:20:29" (1/1) ... [2019-11-15 22:20:29,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:20:29" (1/1) ... [2019-11-15 22:20:29,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:20:29,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:20:29,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:20:29,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:20:29,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:20:29" (1/1) ... [2019-11-15 22:20:29,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:20:29" (1/1) ... [2019-11-15 22:20:29,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:20:29" (1/1) ... [2019-11-15 22:20:29,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:20:29" (1/1) ... [2019-11-15 22:20:29,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:20:29" (1/1) ... [2019-11-15 22:20:29,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:20:29" (1/1) ... [2019-11-15 22:20:29,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:20:29" (1/1) ... [2019-11-15 22:20:29,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:20:29,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:20:29,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:20:29,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:20:29,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:20:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_918c47ef-c12c-4dbc-83ed-2c5b29ea46da/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 22:20:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:20:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-15 22:20:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:20:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:20:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-15 22:20:29,321 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-15 22:20:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-15 22:20:29,321 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-15 22:20:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-15 22:20:29,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-15 22:20:29,324 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-11-15 22:20:29,324 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-11-15 22:20:29,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-15 22:20:29,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:20:29,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:20:29,326 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 22:20:29,757 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:20:29,758 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-15 22:20:29,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:20:29 BoogieIcfgContainer [2019-11-15 22:20:29,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:20:29,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:20:29,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:20:29,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:20:29,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:20:28" (1/3) ... [2019-11-15 22:20:29,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289cf250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:20:29, skipping insertion in model container [2019-11-15 22:20:29,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:20:29" (2/3) ... [2019-11-15 22:20:29,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289cf250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:20:29, skipping insertion in model container [2019-11-15 22:20:29,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:20:29" (3/3) ... [2019-11-15 22:20:29,767 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2019-11-15 22:20:29,797 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,798 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,798 WARN L315 ript$VariableManager]: TermVariabe Thread2_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,798 WARN L315 ript$VariableManager]: TermVariabe Thread2_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,798 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,798 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,799 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,799 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,799 WARN L315 ript$VariableManager]: TermVariabe Thread3_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,799 WARN L315 ript$VariableManager]: TermVariabe Thread3_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,799 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,800 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,800 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,800 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,800 WARN L315 ript$VariableManager]: TermVariabe Thread0_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,800 WARN L315 ript$VariableManager]: TermVariabe Thread0_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,801 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,801 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,801 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,801 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,801 WARN L315 ript$VariableManager]: TermVariabe Thread1_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,801 WARN L315 ript$VariableManager]: TermVariabe Thread1_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,802 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,802 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 22:20:29,813 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 22:20:29,813 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:20:29,824 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 22:20:29,835 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 22:20:29,858 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:20:29,858 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:20:29,858 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:20:29,859 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:20:29,859 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:20:29,859 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:20:29,859 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:20:29,859 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:20:29,874 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 58 transitions [2019-11-15 22:20:30,259 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5470 states. [2019-11-15 22:20:30,261 INFO L276 IsEmpty]: Start isEmpty. Operand 5470 states. [2019-11-15 22:20:30,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-15 22:20:30,300 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:20:30,301 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] [2019-11-15 22:20:30,304 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:20:30,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:20:30,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1043859850, now seen corresponding path program 1 times [2019-11-15 22:20:30,315 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:20:30,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494805061] [2019-11-15 22:20:30,316 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:20:30,316 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:20:30,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:20:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:20:30,691 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 22:20:30,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494805061] [2019-11-15 22:20:30,692 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:20:30,693 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:20:30,693 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181272013] [2019-11-15 22:20:30,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:20:30,698 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:20:30,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:20:30,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:20:30,712 INFO L87 Difference]: Start difference. First operand 5470 states. Second operand 4 states. [2019-11-15 22:20:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:20:31,101 INFO L93 Difference]: Finished difference Result 5707 states and 21932 transitions. [2019-11-15 22:20:31,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:20:31,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-11-15 22:20:31,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:20:31,152 INFO L225 Difference]: With dead ends: 5707 [2019-11-15 22:20:31,152 INFO L226 Difference]: Without dead ends: 2391 [2019-11-15 22:20:31,153 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 22:20:31,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2019-11-15 22:20:31,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2391. [2019-11-15 22:20:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2391 states. [2019-11-15 22:20:31,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2391 states to 2391 states and 8935 transitions. [2019-11-15 22:20:31,379 INFO L78 Accepts]: Start accepts. Automaton has 2391 states and 8935 transitions. Word has length 33 [2019-11-15 22:20:31,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:20:31,380 INFO L462 AbstractCegarLoop]: Abstraction has 2391 states and 8935 transitions. [2019-11-15 22:20:31,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:20:31,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2391 states and 8935 transitions. [2019-11-15 22:20:31,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-15 22:20:31,387 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:20:31,387 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] [2019-11-15 22:20:31,387 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:20:31,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:20:31,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1747668098, now seen corresponding path program 1 times [2019-11-15 22:20:31,389 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:20:31,389 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220691488] [2019-11-15 22:20:31,390 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:20:31,390 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:20:31,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:20:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:20:31,525 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 22:20:31,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220691488] [2019-11-15 22:20:31,525 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:20:31,525 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:20:31,525 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800701911] [2019-11-15 22:20:31,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:20:31,527 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:20:31,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:20:31,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:20:31,528 INFO L87 Difference]: Start difference. First operand 2391 states and 8935 transitions. Second operand 5 states. [2019-11-15 22:20:31,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:20:31,671 INFO L93 Difference]: Finished difference Result 2562 states and 9319 transitions. [2019-11-15 22:20:31,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:20:31,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2019-11-15 22:20:31,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:20:31,696 INFO L225 Difference]: With dead ends: 2562 [2019-11-15 22:20:31,697 INFO L226 Difference]: Without dead ends: 2307 [2019-11-15 22:20:31,698 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 22:20:31,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2019-11-15 22:20:31,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2307. [2019-11-15 22:20:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2307 states. [2019-11-15 22:20:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 8543 transitions. [2019-11-15 22:20:31,859 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 8543 transitions. Word has length 34 [2019-11-15 22:20:31,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:20:31,859 INFO L462 AbstractCegarLoop]: Abstraction has 2307 states and 8543 transitions. [2019-11-15 22:20:31,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:20:31,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 8543 transitions. [2019-11-15 22:20:31,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-15 22:20:31,865 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:20:31,865 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] [2019-11-15 22:20:31,866 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:20:31,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:20:31,866 INFO L82 PathProgramCache]: Analyzing trace with hash -139386971, now seen corresponding path program 1 times [2019-11-15 22:20:31,866 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:20:31,867 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059816486] [2019-11-15 22:20:31,868 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:20:31,868 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:20:31,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:20:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:20:32,003 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 22:20:32,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059816486] [2019-11-15 22:20:32,004 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:20:32,004 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 22:20:32,004 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987539560] [2019-11-15 22:20:32,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:20:32,005 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:20:32,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:20:32,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:20:32,005 INFO L87 Difference]: Start difference. First operand 2307 states and 8543 transitions. Second operand 6 states. [2019-11-15 22:20:32,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:20:32,158 INFO L93 Difference]: Finished difference Result 2172 states and 7679 transitions. [2019-11-15 22:20:32,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:20:32,158 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2019-11-15 22:20:32,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:20:32,174 INFO L225 Difference]: With dead ends: 2172 [2019-11-15 22:20:32,174 INFO L226 Difference]: Without dead ends: 1929 [2019-11-15 22:20:32,175 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-15 22:20:32,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2019-11-15 22:20:32,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1929. [2019-11-15 22:20:32,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1929 states. [2019-11-15 22:20:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 6905 transitions. [2019-11-15 22:20:32,243 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 6905 transitions. Word has length 35 [2019-11-15 22:20:32,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:20:32,243 INFO L462 AbstractCegarLoop]: Abstraction has 1929 states and 6905 transitions. [2019-11-15 22:20:32,243 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:20:32,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 6905 transitions. [2019-11-15 22:20:32,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-15 22:20:32,250 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:20:32,250 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] [2019-11-15 22:20:32,251 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:20:32,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:20:32,251 INFO L82 PathProgramCache]: Analyzing trace with hash -327703417, now seen corresponding path program 1 times [2019-11-15 22:20:32,251 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:20:32,251 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613710484] [2019-11-15 22:20:32,252 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:20:32,252 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:20:32,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:20:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:20:32,408 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 22:20:32,408 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613710484] [2019-11-15 22:20:32,408 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:20:32,408 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 22:20:32,408 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386109693] [2019-11-15 22:20:32,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:20:32,409 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:20:32,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:20:32,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:20:32,409 INFO L87 Difference]: Start difference. First operand 1929 states and 6905 transitions. Second operand 7 states. [2019-11-15 22:20:32,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:20:32,551 INFO L93 Difference]: Finished difference Result 1362 states and 4529 transitions. [2019-11-15 22:20:32,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 22:20:32,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2019-11-15 22:20:32,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:20:32,562 INFO L225 Difference]: With dead ends: 1362 [2019-11-15 22:20:32,562 INFO L226 Difference]: Without dead ends: 1173 [2019-11-15 22:20:32,564 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 22:20:32,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2019-11-15 22:20:32,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2019-11-15 22:20:32,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2019-11-15 22:20:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 3881 transitions. [2019-11-15 22:20:32,603 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 3881 transitions. Word has length 36 [2019-11-15 22:20:32,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:20:32,605 INFO L462 AbstractCegarLoop]: Abstraction has 1173 states and 3881 transitions. [2019-11-15 22:20:32,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:20:32,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 3881 transitions. [2019-11-15 22:20:32,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 22:20:32,609 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:20:32,609 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 22:20:32,609 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:20:32,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:20:32,610 INFO L82 PathProgramCache]: Analyzing trace with hash -937082238, now seen corresponding path program 1 times [2019-11-15 22:20:32,610 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:20:32,610 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012587245] [2019-11-15 22:20:32,610 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:20:32,610 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:20:32,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:20:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:20:32,767 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 22:20:32,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012587245] [2019-11-15 22:20:32,768 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:20:32,768 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 22:20:32,768 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403392479] [2019-11-15 22:20:32,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:20:32,768 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:20:32,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:20:32,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:20:32,769 INFO L87 Difference]: Start difference. First operand 1173 states and 3881 transitions. Second operand 7 states. [2019-11-15 22:20:32,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:20:32,912 INFO L93 Difference]: Finished difference Result 1938 states and 6449 transitions. [2019-11-15 22:20:32,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:20:32,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2019-11-15 22:20:32,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:20:32,924 INFO L225 Difference]: With dead ends: 1938 [2019-11-15 22:20:32,925 INFO L226 Difference]: Without dead ends: 1149 [2019-11-15 22:20:32,925 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 22:20:32,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2019-11-15 22:20:32,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2019-11-15 22:20:32,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2019-11-15 22:20:32,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3788 transitions. [2019-11-15 22:20:32,969 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3788 transitions. Word has length 37 [2019-11-15 22:20:32,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:20:32,970 INFO L462 AbstractCegarLoop]: Abstraction has 1149 states and 3788 transitions. [2019-11-15 22:20:32,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:20:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3788 transitions. [2019-11-15 22:20:32,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 22:20:32,974 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:20:32,974 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 22:20:32,974 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:20:32,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:20:32,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1737875210, now seen corresponding path program 2 times [2019-11-15 22:20:32,975 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:20:32,975 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738774324] [2019-11-15 22:20:32,975 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:20:32,976 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:20:32,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:20:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:20:33,084 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 22:20:33,085 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738774324] [2019-11-15 22:20:33,085 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:20:33,085 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 22:20:33,085 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461719658] [2019-11-15 22:20:33,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:20:33,085 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:20:33,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:20:33,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:20:33,086 INFO L87 Difference]: Start difference. First operand 1149 states and 3788 transitions. Second operand 7 states. [2019-11-15 22:20:33,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:20:33,310 INFO L93 Difference]: Finished difference Result 2292 states and 7697 transitions. [2019-11-15 22:20:33,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 22:20:33,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2019-11-15 22:20:33,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:20:33,320 INFO L225 Difference]: With dead ends: 2292 [2019-11-15 22:20:33,320 INFO L226 Difference]: Without dead ends: 1155 [2019-11-15 22:20:33,321 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2019-11-15 22:20:33,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2019-11-15 22:20:33,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1074. [2019-11-15 22:20:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2019-11-15 22:20:33,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 3533 transitions. [2019-11-15 22:20:33,358 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 3533 transitions. Word has length 37 [2019-11-15 22:20:33,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:20:33,359 INFO L462 AbstractCegarLoop]: Abstraction has 1074 states and 3533 transitions. [2019-11-15 22:20:33,359 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:20:33,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 3533 transitions. [2019-11-15 22:20:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 22:20:33,362 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:20:33,362 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 22:20:33,362 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:20:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:20:33,362 INFO L82 PathProgramCache]: Analyzing trace with hash -756691990, now seen corresponding path program 3 times [2019-11-15 22:20:33,362 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:20:33,363 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951050330] [2019-11-15 22:20:33,363 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:20:33,363 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:20:33,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:20:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:20:33,573 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 22:20:33,573 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951050330] [2019-11-15 22:20:33,573 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:20:33,573 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-15 22:20:33,573 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282815230] [2019-11-15 22:20:33,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 22:20:33,574 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:20:33,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 22:20:33,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:20:33,574 INFO L87 Difference]: Start difference. First operand 1074 states and 3533 transitions. Second operand 8 states. [2019-11-15 22:20:33,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:20:33,687 INFO L93 Difference]: Finished difference Result 1695 states and 5639 transitions. [2019-11-15 22:20:33,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 22:20:33,688 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2019-11-15 22:20:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:20:33,695 INFO L225 Difference]: With dead ends: 1695 [2019-11-15 22:20:33,695 INFO L226 Difference]: Without dead ends: 882 [2019-11-15 22:20:33,696 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-15 22:20:33,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2019-11-15 22:20:33,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 882. [2019-11-15 22:20:33,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 882 states. [2019-11-15 22:20:33,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2933 transitions. [2019-11-15 22:20:33,725 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2933 transitions. Word has length 37 [2019-11-15 22:20:33,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:20:33,725 INFO L462 AbstractCegarLoop]: Abstraction has 882 states and 2933 transitions. [2019-11-15 22:20:33,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 22:20:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2933 transitions. [2019-11-15 22:20:33,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 22:20:33,728 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:20:33,728 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 22:20:33,728 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:20:33,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:20:33,729 INFO L82 PathProgramCache]: Analyzing trace with hash -898430370, now seen corresponding path program 4 times [2019-11-15 22:20:33,729 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:20:33,729 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275277336] [2019-11-15 22:20:33,729 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:20:33,730 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:20:33,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:20:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:20:33,835 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 22:20:33,835 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275277336] [2019-11-15 22:20:33,835 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:20:33,835 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-15 22:20:33,835 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626836000] [2019-11-15 22:20:33,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 22:20:33,836 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:20:33,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 22:20:33,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:20:33,836 INFO L87 Difference]: Start difference. First operand 882 states and 2933 transitions. Second operand 8 states. [2019-11-15 22:20:33,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:20:33,927 INFO L93 Difference]: Finished difference Result 720 states and 2339 transitions. [2019-11-15 22:20:33,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 22:20:33,927 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2019-11-15 22:20:33,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:20:33,928 INFO L225 Difference]: With dead ends: 720 [2019-11-15 22:20:33,928 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 22:20:33,929 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-15 22:20:33,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 22:20:33,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 22:20:33,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 22:20:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 22:20:33,929 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-11-15 22:20:33,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:20:33,930 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:20:33,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 22:20:33,930 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 22:20:33,930 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 22:20:33,933 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-15 22:20:33,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:20:33 BasicIcfg [2019-11-15 22:20:33,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:20:33,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:20:33,936 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:20:33,936 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:20:33,937 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:20:29" (3/4) ... [2019-11-15 22:20:33,940 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 22:20:33,946 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-15 22:20:33,947 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-15 22:20:33,947 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-15 22:20:33,947 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-11-15 22:20:33,951 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-15 22:20:33,952 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 22:20:33,991 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_918c47ef-c12c-4dbc-83ed-2c5b29ea46da/bin/uautomizer/witness.graphml [2019-11-15 22:20:33,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:20:33,994 INFO L168 Benchmark]: Toolchain (without parser) took 5518.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 219.2 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -178.0 MB). Peak memory consumption was 41.2 MB. Max. memory is 11.5 GB. [2019-11-15 22:20:33,994 INFO L168 Benchmark]: CDTParser took 0.32 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 22:20:33,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -168.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:20:33,995 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.69 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 22:20:33,995 INFO L168 Benchmark]: Boogie Preprocessor took 27.52 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 22:20:33,996 INFO L168 Benchmark]: RCFGBuilder took 508.17 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:20:33,996 INFO L168 Benchmark]: TraceAbstraction took 4175.84 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -43.2 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:20:33,997 INFO L168 Benchmark]: Witness Printer took 55.90 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: 5.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:20:33,999 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 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 705.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -168.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.69 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 27.52 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 508.17 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4175.84 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -43.2 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. * Witness Printer took 55.90 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: 5.6 MB). Peak memory consumption was 5.6 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, 78 locations, 1 error locations. Result: SAFE, OverallTime: 4.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 459 SDtfs, 786 SDslu, 1361 SDs, 0 SdLazy, 185 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5470occurred 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, 81 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 286 NumberOfCodeBlocks, 286 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 278 ConstructedInterpolants, 0 QuantifiedInterpolants, 29382 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...