./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe008_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0abffb52-034c-4f57-898d-16c7993b53c3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0abffb52-034c-4f57-898d-16c7993b53c3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0abffb52-034c-4f57-898d-16c7993b53c3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0abffb52-034c-4f57-898d-16c7993b53c3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe008_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0abffb52-034c-4f57-898d-16c7993b53c3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0abffb52-034c-4f57-898d-16c7993b53c3/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 f99de79ed9343ed7ff4227bdc9de57b9c5de7421 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 05:31:13,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:31:13,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:31:13,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:31:13,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:31:13,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:31:13,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:31:13,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:31:13,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:31:13,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:31:13,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:31:13,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:31:13,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:31:13,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:31:13,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:31:13,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:31:13,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:31:13,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:31:13,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:31:13,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:31:13,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:31:13,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:31:13,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:31:13,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:31:13,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:31:13,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:31:13,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:31:13,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:31:13,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:31:13,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:31:13,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:31:13,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:31:13,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:31:13,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:31:13,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:31:13,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:31:13,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:31:13,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:31:13,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:31:13,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:31:13,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:31:13,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0abffb52-034c-4f57-898d-16c7993b53c3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 05:31:13,441 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:31:13,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:31:13,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:31:13,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:31:13,443 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:31:13,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:31:13,444 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:31:13,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:31:13,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:31:13,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:31:13,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:31:13,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:31:13,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:31:13,446 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:31:13,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:31:13,446 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:31:13,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:31:13,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:31:13,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:31:13,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:31:13,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:31:13,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:31:13,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:31:13,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:31:13,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:31:13,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 05:31:13,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 05:31:13,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:31:13,449 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_0abffb52-034c-4f57-898d-16c7993b53c3/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 -> f99de79ed9343ed7ff4227bdc9de57b9c5de7421 [2019-11-20 05:31:13,646 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:31:13,656 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:31:13,659 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:31:13,661 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:31:13,661 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:31:13,662 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0abffb52-034c-4f57-898d-16c7993b53c3/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe008_tso.oepc.i [2019-11-20 05:31:13,726 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0abffb52-034c-4f57-898d-16c7993b53c3/bin/uautomizer/data/15f83f0f6/c62b8592aa474d94a7c8b2f021279ac9/FLAG64fcf018b [2019-11-20 05:31:14,226 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:31:14,226 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0abffb52-034c-4f57-898d-16c7993b53c3/sv-benchmarks/c/pthread-wmm/safe008_tso.oepc.i [2019-11-20 05:31:14,238 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0abffb52-034c-4f57-898d-16c7993b53c3/bin/uautomizer/data/15f83f0f6/c62b8592aa474d94a7c8b2f021279ac9/FLAG64fcf018b [2019-11-20 05:31:14,736 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0abffb52-034c-4f57-898d-16c7993b53c3/bin/uautomizer/data/15f83f0f6/c62b8592aa474d94a7c8b2f021279ac9 [2019-11-20 05:31:14,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:31:14,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:31:14,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:31:14,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:31:14,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:31:14,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:31:14" (1/1) ... [2019-11-20 05:31:14,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2d9e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:14, skipping insertion in model container [2019-11-20 05:31:14,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:31:14" (1/1) ... [2019-11-20 05:31:14,754 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:31:14,801 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:31:15,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:31:15,190 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:31:15,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:31:15,300 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:31:15,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:15 WrapperNode [2019-11-20 05:31:15,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:31:15,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:31:15,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:31:15,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:31:15,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:15" (1/1) ... [2019-11-20 05:31:15,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:15" (1/1) ... [2019-11-20 05:31:15,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:31:15,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:31:15,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:31:15,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:31:15,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:15" (1/1) ... [2019-11-20 05:31:15,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:15" (1/1) ... [2019-11-20 05:31:15,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:15" (1/1) ... [2019-11-20 05:31:15,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:15" (1/1) ... [2019-11-20 05:31:15,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:15" (1/1) ... [2019-11-20 05:31:15,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:15" (1/1) ... [2019-11-20 05:31:15,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:15" (1/1) ... [2019-11-20 05:31:15,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:31:15,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:31:15,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:31:15,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:31:15,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0abffb52-034c-4f57-898d-16c7993b53c3/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 [2019-11-20 05:31:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 05:31:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-20 05:31:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 05:31:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 05:31:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-20 05:31:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-20 05:31:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-20 05:31:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-20 05:31:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-20 05:31:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-20 05:31:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-20 05:31:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:31:15,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:31:15,471 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-20 05:31:15,802 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:31:15,803 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 05:31:15,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:31:15 BoogieIcfgContainer [2019-11-20 05:31:15,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:31:15,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:31:15,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:31:15,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:31:15,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:31:14" (1/3) ... [2019-11-20 05:31:15,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de99bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:31:15, skipping insertion in model container [2019-11-20 05:31:15,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:15" (2/3) ... [2019-11-20 05:31:15,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de99bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:31:15, skipping insertion in model container [2019-11-20 05:31:15,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:31:15" (3/3) ... [2019-11-20 05:31:15,811 INFO L109 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2019-11-20 05:31:15,860 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,860 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,861 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,861 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,861 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,861 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,862 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,862 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,862 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,862 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,863 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,863 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,863 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,863 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,863 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork7_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,864 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork7_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,864 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,864 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,865 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,865 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,865 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,865 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,865 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,866 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,866 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,866 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,866 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,867 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,867 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,867 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,867 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,868 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,868 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork8_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,868 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork8_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,868 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,868 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,869 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,869 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,869 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork6_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,869 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork6_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,870 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,870 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,870 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,870 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,871 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,871 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,871 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,871 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,872 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,872 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,872 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,872 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,873 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,873 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 05:31:15,908 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-20 05:31:15,908 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:31:15,914 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 05:31:15,925 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 05:31:15,943 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:31:15,943 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 05:31:15,943 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:31:15,944 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:31:15,944 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:31:15,944 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:31:15,944 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:31:15,944 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:31:15,956 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 75 transitions [2019-11-20 05:31:19,375 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 31744 states. [2019-11-20 05:31:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 31744 states. [2019-11-20 05:31:19,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 05:31:19,434 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:31:19,435 INFO L410 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] [2019-11-20 05:31:19,435 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:31:19,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:31:19,441 INFO L82 PathProgramCache]: Analyzing trace with hash 773905145, now seen corresponding path program 1 times [2019-11-20 05:31:19,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:31:19,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783757575] [2019-11-20 05:31:19,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:31:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:31:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:31:19,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783757575] [2019-11-20 05:31:19,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:31:19,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 05:31:19,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406165055] [2019-11-20 05:31:19,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 05:31:19,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:31:19,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:31:19,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:31:19,807 INFO L87 Difference]: Start difference. First operand 31744 states. Second operand 4 states. [2019-11-20 05:31:20,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:31:20,426 INFO L93 Difference]: Finished difference Result 33013 states and 103293 transitions. [2019-11-20 05:31:20,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 05:31:20,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-11-20 05:31:20,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:31:20,583 INFO L225 Difference]: With dead ends: 33013 [2019-11-20 05:31:20,583 INFO L226 Difference]: Without dead ends: 14275 [2019-11-20 05:31:20,585 INFO L630 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 [2019-11-20 05:31:20,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14275 states. [2019-11-20 05:31:21,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14275 to 14275. [2019-11-20 05:31:21,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14275 states. [2019-11-20 05:31:21,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14275 states to 14275 states and 44298 transitions. [2019-11-20 05:31:21,420 INFO L78 Accepts]: Start accepts. Automaton has 14275 states and 44298 transitions. Word has length 31 [2019-11-20 05:31:21,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:31:21,422 INFO L462 AbstractCegarLoop]: Abstraction has 14275 states and 44298 transitions. [2019-11-20 05:31:21,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 05:31:21,423 INFO L276 IsEmpty]: Start isEmpty. Operand 14275 states and 44298 transitions. [2019-11-20 05:31:21,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 05:31:21,449 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:31:21,449 INFO L410 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] [2019-11-20 05:31:21,449 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:31:21,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:31:21,458 INFO L82 PathProgramCache]: Analyzing trace with hash 503446180, now seen corresponding path program 1 times [2019-11-20 05:31:21,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:31:21,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890944499] [2019-11-20 05:31:21,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:31:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:31:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:31:21,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890944499] [2019-11-20 05:31:21,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:31:21,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 05:31:21,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706355644] [2019-11-20 05:31:21,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 05:31:21,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:31:21,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 05:31:21,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 05:31:21,611 INFO L87 Difference]: Start difference. First operand 14275 states and 44298 transitions. Second operand 5 states. [2019-11-20 05:31:22,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:31:22,026 INFO L93 Difference]: Finished difference Result 14275 states and 42111 transitions. [2019-11-20 05:31:22,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 05:31:22,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-11-20 05:31:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:31:22,092 INFO L225 Difference]: With dead ends: 14275 [2019-11-20 05:31:22,092 INFO L226 Difference]: Without dead ends: 12574 [2019-11-20 05:31:22,094 INFO L630 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 [2019-11-20 05:31:22,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12574 states. [2019-11-20 05:31:22,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12574 to 12574. [2019-11-20 05:31:22,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12574 states. [2019-11-20 05:31:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12574 states to 12574 states and 38061 transitions. [2019-11-20 05:31:22,619 INFO L78 Accepts]: Start accepts. Automaton has 12574 states and 38061 transitions. Word has length 32 [2019-11-20 05:31:22,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:31:22,620 INFO L462 AbstractCegarLoop]: Abstraction has 12574 states and 38061 transitions. [2019-11-20 05:31:22,620 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 05:31:22,620 INFO L276 IsEmpty]: Start isEmpty. Operand 12574 states and 38061 transitions. [2019-11-20 05:31:22,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 05:31:22,645 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:31:22,646 INFO L410 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] [2019-11-20 05:31:22,646 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:31:22,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:31:22,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1097171415, now seen corresponding path program 1 times [2019-11-20 05:31:22,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:31:22,647 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417406129] [2019-11-20 05:31:22,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:31:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:31:22,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:31:22,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417406129] [2019-11-20 05:31:22,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:31:22,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 05:31:22,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095268004] [2019-11-20 05:31:22,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 05:31:22,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:31:22,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 05:31:22,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 05:31:22,778 INFO L87 Difference]: Start difference. First operand 12574 states and 38061 transitions. Second operand 6 states. [2019-11-20 05:31:22,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:31:23,000 INFO L93 Difference]: Finished difference Result 8929 states and 24939 transitions. [2019-11-20 05:31:23,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 05:31:23,001 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-11-20 05:31:23,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:31:23,025 INFO L225 Difference]: With dead ends: 8929 [2019-11-20 05:31:23,025 INFO L226 Difference]: Without dead ends: 7471 [2019-11-20 05:31:23,026 INFO L630 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 [2019-11-20 05:31:23,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7471 states. [2019-11-20 05:31:23,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7471 to 7471. [2019-11-20 05:31:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7471 states. [2019-11-20 05:31:23,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7471 states to 7471 states and 21051 transitions. [2019-11-20 05:31:23,467 INFO L78 Accepts]: Start accepts. Automaton has 7471 states and 21051 transitions. Word has length 33 [2019-11-20 05:31:23,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:31:23,468 INFO L462 AbstractCegarLoop]: Abstraction has 7471 states and 21051 transitions. [2019-11-20 05:31:23,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 05:31:23,468 INFO L276 IsEmpty]: Start isEmpty. Operand 7471 states and 21051 transitions. [2019-11-20 05:31:23,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 05:31:23,487 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:31:23,487 INFO L410 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] [2019-11-20 05:31:23,487 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:31:23,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:31:23,488 INFO L82 PathProgramCache]: Analyzing trace with hash -769429042, now seen corresponding path program 1 times [2019-11-20 05:31:23,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:31:23,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782066670] [2019-11-20 05:31:23,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:31:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:31:23,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:31:23,660 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782066670] [2019-11-20 05:31:23,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:31:23,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 05:31:23,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108910472] [2019-11-20 05:31:23,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 05:31:23,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:31:23,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 05:31:23,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 05:31:23,662 INFO L87 Difference]: Start difference. First operand 7471 states and 21051 transitions. Second operand 6 states. [2019-11-20 05:31:23,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:31:23,832 INFO L93 Difference]: Finished difference Result 12331 states and 34578 transitions. [2019-11-20 05:31:23,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 05:31:23,832 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-11-20 05:31:23,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:31:23,854 INFO L225 Difference]: With dead ends: 12331 [2019-11-20 05:31:23,854 INFO L226 Difference]: Without dead ends: 7390 [2019-11-20 05:31:23,856 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-20 05:31:23,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7390 states. [2019-11-20 05:31:24,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7390 to 6904. [2019-11-20 05:31:24,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6904 states. [2019-11-20 05:31:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 19188 transitions. [2019-11-20 05:31:24,039 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 19188 transitions. Word has length 34 [2019-11-20 05:31:24,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:31:24,040 INFO L462 AbstractCegarLoop]: Abstraction has 6904 states and 19188 transitions. [2019-11-20 05:31:24,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 05:31:24,040 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 19188 transitions. [2019-11-20 05:31:24,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 05:31:24,050 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:31:24,051 INFO L410 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] [2019-11-20 05:31:24,051 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:31:24,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:31:24,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1956979216, now seen corresponding path program 2 times [2019-11-20 05:31:24,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:31:24,052 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526365699] [2019-11-20 05:31:24,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:31:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:31:24,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:31:24,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526365699] [2019-11-20 05:31:24,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:31:24,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 05:31:24,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811628458] [2019-11-20 05:31:24,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 05:31:24,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:31:24,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 05:31:24,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:31:24,230 INFO L87 Difference]: Start difference. First operand 6904 states and 19188 transitions. Second operand 7 states. [2019-11-20 05:31:24,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:31:24,396 INFO L93 Difference]: Finished difference Result 11521 states and 32148 transitions. [2019-11-20 05:31:24,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 05:31:24,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2019-11-20 05:31:24,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:31:24,418 INFO L225 Difference]: With dead ends: 11521 [2019-11-20 05:31:24,418 INFO L226 Difference]: Without dead ends: 6679 [2019-11-20 05:31:24,418 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-20 05:31:24,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6679 states. [2019-11-20 05:31:24,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6679 to 6679. [2019-11-20 05:31:24,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6679 states. [2019-11-20 05:31:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6679 states to 6679 states and 18666 transitions. [2019-11-20 05:31:24,585 INFO L78 Accepts]: Start accepts. Automaton has 6679 states and 18666 transitions. Word has length 34 [2019-11-20 05:31:24,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:31:24,585 INFO L462 AbstractCegarLoop]: Abstraction has 6679 states and 18666 transitions. [2019-11-20 05:31:24,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 05:31:24,585 INFO L276 IsEmpty]: Start isEmpty. Operand 6679 states and 18666 transitions. [2019-11-20 05:31:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 05:31:24,595 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:31:24,595 INFO L410 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] [2019-11-20 05:31:24,595 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:31:24,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:31:24,595 INFO L82 PathProgramCache]: Analyzing trace with hash -620786010, now seen corresponding path program 3 times [2019-11-20 05:31:24,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:31:24,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272179993] [2019-11-20 05:31:24,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:31:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:31:24,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:31:24,707 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272179993] [2019-11-20 05:31:24,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:31:24,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-20 05:31:24,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622500846] [2019-11-20 05:31:24,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 05:31:24,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:31:24,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 05:31:24,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-20 05:31:24,709 INFO L87 Difference]: Start difference. First operand 6679 states and 18666 transitions. Second operand 8 states. [2019-11-20 05:31:24,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:31:24,876 INFO L93 Difference]: Finished difference Result 11053 states and 31059 transitions. [2019-11-20 05:31:24,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 05:31:24,877 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2019-11-20 05:31:24,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:31:24,894 INFO L225 Difference]: With dead ends: 11053 [2019-11-20 05:31:24,894 INFO L226 Difference]: Without dead ends: 6247 [2019-11-20 05:31:24,894 INFO L630 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 [2019-11-20 05:31:24,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6247 states. [2019-11-20 05:31:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6247 to 6247. [2019-11-20 05:31:25,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6247 states. [2019-11-20 05:31:25,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6247 states to 6247 states and 17586 transitions. [2019-11-20 05:31:25,060 INFO L78 Accepts]: Start accepts. Automaton has 6247 states and 17586 transitions. Word has length 34 [2019-11-20 05:31:25,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:31:25,061 INFO L462 AbstractCegarLoop]: Abstraction has 6247 states and 17586 transitions. [2019-11-20 05:31:25,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 05:31:25,062 INFO L276 IsEmpty]: Start isEmpty. Operand 6247 states and 17586 transitions. [2019-11-20 05:31:25,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 05:31:25,069 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:31:25,070 INFO L410 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] [2019-11-20 05:31:25,070 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:31:25,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:31:25,071 INFO L82 PathProgramCache]: Analyzing trace with hash 2120243672, now seen corresponding path program 4 times [2019-11-20 05:31:25,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:31:25,071 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637084262] [2019-11-20 05:31:25,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:31:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:31:25,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:31:25,179 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637084262] [2019-11-20 05:31:25,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:31:25,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-20 05:31:25,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361291364] [2019-11-20 05:31:25,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 05:31:25,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:31:25,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 05:31:25,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-20 05:31:25,180 INFO L87 Difference]: Start difference. First operand 6247 states and 17586 transitions. Second operand 8 states. [2019-11-20 05:31:25,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:31:25,310 INFO L93 Difference]: Finished difference Result 4789 states and 13212 transitions. [2019-11-20 05:31:25,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:31:25,311 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2019-11-20 05:31:25,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:31:25,311 INFO L225 Difference]: With dead ends: 4789 [2019-11-20 05:31:25,311 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 05:31:25,312 INFO L630 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 [2019-11-20 05:31:25,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 05:31:25,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 05:31:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 05:31:25,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 05:31:25,313 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2019-11-20 05:31:25,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:31:25,313 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:31:25,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 05:31:25,314 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 05:31:25,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 05:31:25,317 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-20 05:31:25,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:31:25 BasicIcfg [2019-11-20 05:31:25,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 05:31:25,319 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:31:25,319 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:31:25,320 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:31:25,320 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:31:15" (3/4) ... [2019-11-20 05:31:25,325 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 05:31:25,341 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-20 05:31:25,353 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-20 05:31:25,353 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-20 05:31:25,358 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-20 05:31:25,358 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 05:31:25,358 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 05:31:25,412 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0abffb52-034c-4f57-898d-16c7993b53c3/bin/uautomizer/witness.graphml [2019-11-20 05:31:25,412 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:31:25,414 INFO L168 Benchmark]: Toolchain (without parser) took 10674.12 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 492.3 MB). Free memory was 944.8 MB in the beginning and 865.6 MB in the end (delta: 79.2 MB). Peak memory consumption was 571.5 MB. Max. memory is 11.5 GB. [2019-11-20 05:31:25,415 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 966.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:31:25,418 INFO L168 Benchmark]: CACSL2BoogieTranslator took 561.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-20 05:31:25,419 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.28 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. [2019-11-20 05:31:25,424 INFO L168 Benchmark]: Boogie Preprocessor took 36.23 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. [2019-11-20 05:31:25,424 INFO L168 Benchmark]: RCFGBuilder took 417.45 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. [2019-11-20 05:31:25,425 INFO L168 Benchmark]: TraceAbstraction took 9514.20 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 351.8 MB). Free memory was 1.1 GB in the beginning and 869.3 MB in the end (delta: 210.0 MB). Peak memory consumption was 561.8 MB. Max. memory is 11.5 GB. [2019-11-20 05:31:25,425 INFO L168 Benchmark]: Witness Printer took 92.78 ms. Allocated memory is still 1.5 GB. Free memory was 869.3 MB in the beginning and 865.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2019-11-20 05:31:25,427 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 966.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 561.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.28 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 36.23 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 417.45 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 9514.20 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 351.8 MB). Free memory was 1.1 GB in the beginning and 869.3 MB in the end (delta: 210.0 MB). Peak memory consumption was 561.8 MB. Max. memory is 11.5 GB. * Witness Printer took 92.78 ms. Allocated memory is still 1.5 GB. Free memory was 869.3 MB in the beginning and 865.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 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 13 procedures, 90 locations, 1 error locations. Result: SAFE, OverallTime: 9.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 654 SDtfs, 1007 SDslu, 1621 SDs, 0 SdLazy, 207 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31744occurred 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: 2.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 486 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 232 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 22035 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...