./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.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_6de1725c-75d1-4e29-9df7-ffa0388ecd47/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6de1725c-75d1-4e29-9df7-ffa0388ecd47/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6de1725c-75d1-4e29-9df7-ffa0388ecd47/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6de1725c-75d1-4e29-9df7-ffa0388ecd47/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6de1725c-75d1-4e29-9df7-ffa0388ecd47/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6de1725c-75d1-4e29-9df7-ffa0388ecd47/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 ba13ae03d66e26692285201b6dabc9984fe627f1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 09:27:58,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 09:27:58,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 09:27:58,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 09:27:58,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 09:27:58,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 09:27:58,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 09:27:58,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 09:27:58,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 09:27:58,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 09:27:58,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 09:27:58,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 09:27:58,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 09:27:58,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 09:27:58,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 09:27:58,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 09:27:58,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 09:27:58,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 09:27:58,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 09:27:59,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 09:27:59,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 09:27:59,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 09:27:59,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 09:27:59,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 09:27:59,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 09:27:59,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 09:27:59,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 09:27:59,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 09:27:59,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 09:27:59,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 09:27:59,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 09:27:59,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 09:27:59,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 09:27:59,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 09:27:59,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 09:27:59,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 09:27:59,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 09:27:59,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 09:27:59,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 09:27:59,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 09:27:59,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 09:27:59,035 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6de1725c-75d1-4e29-9df7-ffa0388ecd47/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 09:27:59,067 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 09:27:59,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 09:27:59,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 09:27:59,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 09:27:59,069 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 09:27:59,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 09:27:59,070 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 09:27:59,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 09:27:59,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 09:27:59,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 09:27:59,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 09:27:59,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 09:27:59,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 09:27:59,071 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 09:27:59,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 09:27:59,072 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 09:27:59,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 09:27:59,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 09:27:59,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 09:27:59,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 09:27:59,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 09:27:59,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 09:27:59,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 09:27:59,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 09:27:59,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 09:27:59,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 09:27:59,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 09:27:59,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 09:27:59,075 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_6de1725c-75d1-4e29-9df7-ffa0388ecd47/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 -> ba13ae03d66e26692285201b6dabc9984fe627f1 [2019-11-20 09:27:59,249 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 09:27:59,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 09:27:59,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 09:27:59,266 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 09:27:59,267 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 09:27:59,267 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6de1725c-75d1-4e29-9df7-ffa0388ecd47/bin/uautomizer/../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2019-11-20 09:27:59,333 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6de1725c-75d1-4e29-9df7-ffa0388ecd47/bin/uautomizer/data/36f977149/cd3a1b5685174db18ef4c2250e4d9c32/FLAG1e1c6d2c6 [2019-11-20 09:27:59,859 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 09:27:59,860 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6de1725c-75d1-4e29-9df7-ffa0388ecd47/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2019-11-20 09:27:59,868 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6de1725c-75d1-4e29-9df7-ffa0388ecd47/bin/uautomizer/data/36f977149/cd3a1b5685174db18ef4c2250e4d9c32/FLAG1e1c6d2c6 [2019-11-20 09:28:00,247 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6de1725c-75d1-4e29-9df7-ffa0388ecd47/bin/uautomizer/data/36f977149/cd3a1b5685174db18ef4c2250e4d9c32 [2019-11-20 09:28:00,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 09:28:00,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 09:28:00,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 09:28:00,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 09:28:00,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 09:28:00,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:00" (1/1) ... [2019-11-20 09:28:00,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b52e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:00, skipping insertion in model container [2019-11-20 09:28:00,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:00" (1/1) ... [2019-11-20 09:28:00,281 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 09:28:00,304 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 09:28:00,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:28:00,665 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 09:28:00,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:28:00,743 INFO L192 MainTranslator]: Completed translation [2019-11-20 09:28:00,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:00 WrapperNode [2019-11-20 09:28:00,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 09:28:00,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 09:28:00,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 09:28:00,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 09:28:00,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:00" (1/1) ... [2019-11-20 09:28:00,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:00" (1/1) ... [2019-11-20 09:28:00,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 09:28:00,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 09:28:00,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 09:28:00,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 09:28:00,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:00" (1/1) ... [2019-11-20 09:28:00,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:00" (1/1) ... [2019-11-20 09:28:00,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:00" (1/1) ... [2019-11-20 09:28:00,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:00" (1/1) ... [2019-11-20 09:28:00,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:00" (1/1) ... [2019-11-20 09:28:00,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:00" (1/1) ... [2019-11-20 09:28:00,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:00" (1/1) ... [2019-11-20 09:28:00,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 09:28:00,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 09:28:00,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 09:28:00,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 09:28:00,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6de1725c-75d1-4e29-9df7-ffa0388ecd47/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 09:28:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 09:28:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 09:28:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 09:28:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 09:28:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 09:28:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 09:28:01,535 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 09:28:01,535 INFO L285 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-20 09:28:01,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:01 BoogieIcfgContainer [2019-11-20 09:28:01,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 09:28:01,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 09:28:01,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 09:28:01,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 09:28:01,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:28:00" (1/3) ... [2019-11-20 09:28:01,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eeefc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:01, skipping insertion in model container [2019-11-20 09:28:01,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:00" (2/3) ... [2019-11-20 09:28:01,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eeefc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:01, skipping insertion in model container [2019-11-20 09:28:01,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:01" (3/3) ... [2019-11-20 09:28:01,552 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2019-11-20 09:28:01,574 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 09:28:01,582 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-20 09:28:01,596 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-20 09:28:01,625 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 09:28:01,626 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 09:28:01,626 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 09:28:01,627 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 09:28:01,627 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 09:28:01,627 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 09:28:01,627 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 09:28:01,628 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 09:28:01,649 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2019-11-20 09:28:01,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 09:28:01,656 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:28:01,657 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:28:01,658 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:28:01,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:28:01,664 INFO L82 PathProgramCache]: Analyzing trace with hash 212109301, now seen corresponding path program 1 times [2019-11-20 09:28:01,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:28:01,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762050473] [2019-11-20 09:28:01,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:28:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:01,892 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 09:28:01,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762050473] [2019-11-20 09:28:01,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:28:01,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 09:28:01,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467960452] [2019-11-20 09:28:01,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 09:28:01,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:28:01,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 09:28:01,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 09:28:01,925 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 3 states. [2019-11-20 09:28:02,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:28:02,065 INFO L93 Difference]: Finished difference Result 137 states and 207 transitions. [2019-11-20 09:28:02,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 09:28:02,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-20 09:28:02,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:28:02,079 INFO L225 Difference]: With dead ends: 137 [2019-11-20 09:28:02,080 INFO L226 Difference]: Without dead ends: 85 [2019-11-20 09:28:02,083 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 09:28:02,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-20 09:28:02,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 45. [2019-11-20 09:28:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-20 09:28:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2019-11-20 09:28:02,129 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 8 [2019-11-20 09:28:02,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:28:02,129 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2019-11-20 09:28:02,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 09:28:02,129 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2019-11-20 09:28:02,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 09:28:02,130 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:28:02,130 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:28:02,131 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:28:02,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:28:02,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1436007159, now seen corresponding path program 1 times [2019-11-20 09:28:02,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:28:02,131 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546606678] [2019-11-20 09:28:02,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:28:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:02,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:28:02,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546606678] [2019-11-20 09:28:02,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017484071] [2019-11-20 09:28:02,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6de1725c-75d1-4e29-9df7-ffa0388ecd47/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:02,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 09:28:02,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:28:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:28:02,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 09:28:02,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-20 09:28:02,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221844888] [2019-11-20 09:28:02,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 09:28:02,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:28:02,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 09:28:02,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 09:28:02,329 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 5 states. [2019-11-20 09:28:02,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:28:02,541 INFO L93 Difference]: Finished difference Result 166 states and 208 transitions. [2019-11-20 09:28:02,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 09:28:02,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-20 09:28:02,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:28:02,544 INFO L225 Difference]: With dead ends: 166 [2019-11-20 09:28:02,544 INFO L226 Difference]: Without dead ends: 126 [2019-11-20 09:28:02,546 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 09:28:02,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-11-20 09:28:02,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 47. [2019-11-20 09:28:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-20 09:28:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2019-11-20 09:28:02,557 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 10 [2019-11-20 09:28:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:28:02,557 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2019-11-20 09:28:02,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 09:28:02,558 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2019-11-20 09:28:02,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 09:28:02,558 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:28:02,559 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:28:02,769 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:02,770 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:28:02,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:28:02,770 INFO L82 PathProgramCache]: Analyzing trace with hash 780809593, now seen corresponding path program 2 times [2019-11-20 09:28:02,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:28:02,771 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488605973] [2019-11-20 09:28:02,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:28:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:28:02,843 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488605973] [2019-11-20 09:28:02,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096904549] [2019-11-20 09:28:02,844 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6de1725c-75d1-4e29-9df7-ffa0388ecd47/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:02,908 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-20 09:28:02,908 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 09:28:02,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 09:28:02,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:28:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 09:28:02,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 09:28:02,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-11-20 09:28:02,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139245294] [2019-11-20 09:28:02,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 09:28:02,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:28:02,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 09:28:02,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-20 09:28:02,963 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand 4 states. [2019-11-20 09:28:03,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:28:03,039 INFO L93 Difference]: Finished difference Result 92 states and 117 transitions. [2019-11-20 09:28:03,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 09:28:03,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-20 09:28:03,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:28:03,041 INFO L225 Difference]: With dead ends: 92 [2019-11-20 09:28:03,041 INFO L226 Difference]: Without dead ends: 51 [2019-11-20 09:28:03,042 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-20 09:28:03,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-20 09:28:03,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2019-11-20 09:28:03,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-20 09:28:03,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2019-11-20 09:28:03,050 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 12 [2019-11-20 09:28:03,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:28:03,051 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2019-11-20 09:28:03,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 09:28:03,051 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2019-11-20 09:28:03,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-20 09:28:03,052 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:28:03,052 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:28:03,252 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:28:03,253 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:28:03,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:28:03,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1692621165, now seen corresponding path program 1 times [2019-11-20 09:28:03,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:28:03,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858617840] [2019-11-20 09:28:03,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:28:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:03,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 09:28:03,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858617840] [2019-11-20 09:28:03,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:28:03,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 09:28:03,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345428038] [2019-11-20 09:28:03,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 09:28:03,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:28:03,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 09:28:03,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 09:28:03,326 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 3 states. [2019-11-20 09:28:03,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:28:03,367 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2019-11-20 09:28:03,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 09:28:03,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-20 09:28:03,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:28:03,369 INFO L225 Difference]: With dead ends: 111 [2019-11-20 09:28:03,369 INFO L226 Difference]: Without dead ends: 73 [2019-11-20 09:28:03,370 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 09:28:03,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-20 09:28:03,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 51. [2019-11-20 09:28:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-20 09:28:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2019-11-20 09:28:03,379 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 23 [2019-11-20 09:28:03,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:28:03,380 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2019-11-20 09:28:03,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 09:28:03,380 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2019-11-20 09:28:03,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-20 09:28:03,381 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:28:03,382 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:28:03,382 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:28:03,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:28:03,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2112056943, now seen corresponding path program 1 times [2019-11-20 09:28:03,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:28:03,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818342704] [2019-11-20 09:28:03,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:28:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 09:28:03,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818342704] [2019-11-20 09:28:03,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:28:03,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 09:28:03,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339867960] [2019-11-20 09:28:03,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 09:28:03,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:28:03,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 09:28:03,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 09:28:03,455 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand 4 states. [2019-11-20 09:28:03,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:28:03,499 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2019-11-20 09:28:03,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 09:28:03,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-11-20 09:28:03,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:28:03,502 INFO L225 Difference]: With dead ends: 106 [2019-11-20 09:28:03,502 INFO L226 Difference]: Without dead ends: 79 [2019-11-20 09:28:03,503 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 09:28:03,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-11-20 09:28:03,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 55. [2019-11-20 09:28:03,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-20 09:28:03,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2019-11-20 09:28:03,519 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 25 [2019-11-20 09:28:03,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:28:03,519 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2019-11-20 09:28:03,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 09:28:03,520 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2019-11-20 09:28:03,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-20 09:28:03,521 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:28:03,521 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:28:03,521 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:28:03,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:28:03,521 INFO L82 PathProgramCache]: Analyzing trace with hash -930350137, now seen corresponding path program 1 times [2019-11-20 09:28:03,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:28:03,522 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751556345] [2019-11-20 09:28:03,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:28:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:28:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-20 09:28:03,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751556345] [2019-11-20 09:28:03,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:28:03,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 09:28:03,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470109844] [2019-11-20 09:28:03,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 09:28:03,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:28:03,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 09:28:03,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 09:28:03,617 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 4 states. [2019-11-20 09:28:03,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:28:03,646 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2019-11-20 09:28:03,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 09:28:03,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-11-20 09:28:03,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:28:03,648 INFO L225 Difference]: With dead ends: 64 [2019-11-20 09:28:03,648 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 09:28:03,649 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 09:28:03,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 09:28:03,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 09:28:03,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 09:28:03,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 09:28:03,650 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-11-20 09:28:03,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:28:03,650 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 09:28:03,651 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 09:28:03,651 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 09:28:03,651 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 09:28:03,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 09:28:03,907 INFO L444 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-20 09:28:03,907 INFO L444 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-20 09:28:03,907 INFO L444 ceAbstractionStarter]: For program point L2-4(line 2) no Hoare annotation was computed. [2019-11-20 09:28:03,908 INFO L444 ceAbstractionStarter]: For program point L2-5(line 2) no Hoare annotation was computed. [2019-11-20 09:28:03,908 INFO L444 ceAbstractionStarter]: For program point L2-7(line 2) no Hoare annotation was computed. [2019-11-20 09:28:03,908 INFO L444 ceAbstractionStarter]: For program point L2-8(line 2) no Hoare annotation was computed. [2019-11-20 09:28:03,908 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-20 09:28:03,908 INFO L444 ceAbstractionStarter]: For program point L2-9(line 2) no Hoare annotation was computed. [2019-11-20 09:28:03,909 INFO L444 ceAbstractionStarter]: For program point L2-11(line 2) no Hoare annotation was computed. [2019-11-20 09:28:03,909 INFO L444 ceAbstractionStarter]: For program point L44-2(lines 44 48) no Hoare annotation was computed. [2019-11-20 09:28:03,909 INFO L444 ceAbstractionStarter]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2019-11-20 09:28:03,909 INFO L440 ceAbstractionStarter]: At program point L44-3(lines 44 48) the Hoare annotation is: (and (= 0 ULTIMATE.start_elem_exists_~i~0) (= ULTIMATE.start_elem_exists_~size 0) (= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-20 09:28:03,910 INFO L440 ceAbstractionStarter]: At program point L11-3(lines 11 13) the Hoare annotation is: (and (= 0 ULTIMATE.start_elem_exists_~i~0) (= ULTIMATE.start_elem_exists_~size 0) (= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-20 09:28:03,910 INFO L444 ceAbstractionStarter]: For program point L11-4(lines 11 13) no Hoare annotation was computed. [2019-11-20 09:28:03,910 INFO L444 ceAbstractionStarter]: For program point L36-2(lines 36 39) no Hoare annotation was computed. [2019-11-20 09:28:03,911 INFO L440 ceAbstractionStarter]: At program point L36-3(lines 36 39) the Hoare annotation is: (and (= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-20 09:28:03,911 INFO L444 ceAbstractionStarter]: For program point L36-4(lines 36 39) no Hoare annotation was computed. [2019-11-20 09:28:03,912 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 09:28:03,912 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 09:28:03,913 INFO L444 ceAbstractionStarter]: For program point L28-2(lines 28 32) no Hoare annotation was computed. [2019-11-20 09:28:03,913 INFO L440 ceAbstractionStarter]: At program point L28-3(lines 28 32) the Hoare annotation is: (and (= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-20 09:28:03,913 INFO L444 ceAbstractionStarter]: For program point L28-4(lines 28 32) no Hoare annotation was computed. [2019-11-20 09:28:03,914 INFO L444 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2019-11-20 09:28:03,914 INFO L444 ceAbstractionStarter]: For program point L45-2(lines 45 47) no Hoare annotation was computed. [2019-11-20 09:28:03,914 INFO L440 ceAbstractionStarter]: At program point L45-3(lines 45 47) the Hoare annotation is: false [2019-11-20 09:28:03,914 INFO L444 ceAbstractionStarter]: For program point L29-2(lines 29 31) no Hoare annotation was computed. [2019-11-20 09:28:03,914 INFO L440 ceAbstractionStarter]: At program point L29-3(lines 29 31) the Hoare annotation is: false [2019-11-20 09:28:03,915 INFO L447 ceAbstractionStarter]: At program point L55(lines 16 56) the Hoare annotation is: true [2019-11-20 09:28:03,915 INFO L444 ceAbstractionStarter]: For program point L22-2(lines 22 25) no Hoare annotation was computed. [2019-11-20 09:28:03,915 INFO L440 ceAbstractionStarter]: At program point L22-3(lines 22 25) the Hoare annotation is: (and (= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-20 09:28:03,915 INFO L444 ceAbstractionStarter]: For program point L22-4(lines 22 25) no Hoare annotation was computed. [2019-11-20 09:28:03,917 INFO L440 ceAbstractionStarter]: At program point L14(lines 9 15) the Hoare annotation is: (and (= 0 ULTIMATE.start_elem_exists_~i~0) (= 0 |ULTIMATE.start_elem_exists_#res|) (= ULTIMATE.start_elem_exists_~size 0) (= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-20 09:28:03,917 INFO L440 ceAbstractionStarter]: At program point L7(lines 5 8) the Hoare annotation is: false [2019-11-20 09:28:03,917 INFO L444 ceAbstractionStarter]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2019-11-20 09:28:03,917 INFO L440 ceAbstractionStarter]: At program point L40-3(lines 40 49) the Hoare annotation is: (and (= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-20 09:28:03,918 INFO L444 ceAbstractionStarter]: For program point L40-4(lines 40 49) no Hoare annotation was computed. [2019-11-20 09:28:03,918 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-20 09:28:03,918 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-20 09:28:03,918 INFO L444 ceAbstractionStarter]: For program point L41(lines 41 43) no Hoare annotation was computed. [2019-11-20 09:28:03,918 INFO L444 ceAbstractionStarter]: For program point L41-2(lines 41 43) no Hoare annotation was computed. [2019-11-20 09:28:03,919 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 09:28:03,919 INFO L444 ceAbstractionStarter]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2019-11-20 09:28:03,919 INFO L440 ceAbstractionStarter]: At program point L50-3(lines 50 54) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-20 09:28:03,919 INFO L444 ceAbstractionStarter]: For program point L50-4(lines 50 54) no Hoare annotation was computed. [2019-11-20 09:28:03,920 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-20 09:28:03,920 INFO L444 ceAbstractionStarter]: For program point L51-2(lines 51 53) no Hoare annotation was computed. [2019-11-20 09:28:03,920 INFO L440 ceAbstractionStarter]: At program point L51-3(lines 51 53) the Hoare annotation is: false [2019-11-20 09:28:03,921 INFO L444 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-20 09:28:03,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:28:03 BoogieIcfgContainer [2019-11-20 09:28:03,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 09:28:03,948 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 09:28:03,948 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 09:28:03,949 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 09:28:03,949 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:01" (3/4) ... [2019-11-20 09:28:03,954 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 09:28:03,974 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-20 09:28:03,975 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-20 09:28:03,975 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 09:28:04,032 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((0 == i && 0 == \result) && size == 0) && n == 0) && 0 <= x [2019-11-20 09:28:04,103 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6de1725c-75d1-4e29-9df7-ffa0388ecd47/bin/uautomizer/witness.graphml [2019-11-20 09:28:04,104 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 09:28:04,108 INFO L168 Benchmark]: Toolchain (without parser) took 3854.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 951.4 MB in the beginning and 951.8 MB in the end (delta: -391.8 kB). Peak memory consumption was 134.4 MB. Max. memory is 11.5 GB. [2019-11-20 09:28:04,108 INFO L168 Benchmark]: CDTParser took 0.22 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. [2019-11-20 09:28:04,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 487.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-20 09:28:04,109 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.50 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 09:28:04,109 INFO L168 Benchmark]: Boogie Preprocessor took 75.48 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-20 09:28:04,110 INFO L168 Benchmark]: RCFGBuilder took 637.53 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: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. [2019-11-20 09:28:04,110 INFO L168 Benchmark]: TraceAbstraction took 2409.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 958.5 MB in the end (delta: 131.3 MB). Peak memory consumption was 131.3 MB. Max. memory is 11.5 GB. [2019-11-20 09:28:04,111 INFO L168 Benchmark]: Witness Printer took 156.92 ms. Allocated memory is still 1.2 GB. Free memory was 958.5 MB in the beginning and 951.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-20 09:28:04,113 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 487.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 78.50 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 75.48 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 637.53 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: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2409.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 958.5 MB in the end (delta: 131.3 MB). Peak memory consumption was 131.3 MB. Max. memory is 11.5 GB. * Witness Printer took 156.92 ms. Allocated memory is still 1.2 GB. Free memory was 958.5 MB in the beginning and 951.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: n <= 0 && 0 <= x - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: n == 0 && 0 <= x - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((0 == i && size == 0) && n == 0) && 0 <= x - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: n == 0 && 0 <= x - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((0 == i && size == 0) && n == 0) && 0 <= x - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: n == 0 && 0 <= x - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (((0 == i && 0 == \result) && size == 0) && n == 0) && 0 <= x - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: n == 0 && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 48 locations, 3 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 248 SDtfs, 244 SDslu, 328 SDs, 0 SdLazy, 129 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 166 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 26 NumberOfFragments, 82 HoareAnnotationTreeSize, 13 FomulaSimplifications, 180 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 125 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 3427 SizeOfPredicates, 3 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 18/24 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...