./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/genady.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/genady.c -s /tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6938b5c805400363799492c040263d9022406929 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 10:06:02,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:06:02,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:06:02,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:06:02,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:06:02,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:06:02,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:06:02,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:06:02,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:06:02,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:06:02,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:06:02,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:06:02,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:06:02,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:06:02,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:06:02,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:06:02,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:06:02,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:06:02,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:06:02,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:06:02,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:06:02,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:06:02,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:06:02,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:06:02,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:06:02,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:06:02,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:06:02,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:06:02,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:06:02,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:06:02,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:06:02,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:06:02,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:06:02,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:06:02,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:06:02,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:06:02,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:06:02,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:06:02,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:06:02,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:06:02,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:06:02,090 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-09 10:06:02,107 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:06:02,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:06:02,108 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:06:02,108 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:06:02,108 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:06:02,108 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:06:02,109 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 10:06:02,109 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:06:02,109 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:06:02,109 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 10:06:02,109 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 10:06:02,109 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:06:02,109 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 10:06:02,109 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 10:06:02,110 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 10:06:02,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:06:02,110 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 10:06:02,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:06:02,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:06:02,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 10:06:02,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:06:02,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 10:06:02,111 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 10:06:02,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 10:06:02,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:06:02,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 10:06:02,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:06:02,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:06:02,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:06:02,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:06:02,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:06:02,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 10:06:02,112 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 10:06:02,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 10:06:02,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 10:06:02,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:06:02,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:06:02,113 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6938b5c805400363799492c040263d9022406929 [2020-12-09 10:06:02,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:06:02,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:06:02,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:06:02,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:06:02,329 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:06:02,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/genady.c [2020-12-09 10:06:02,370 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan/data/2f12f5bf4/19d62e04d50642f4afa7964078d04187/FLAGe60a80bd0 [2020-12-09 10:06:02,710 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:06:02,710 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/sv-benchmarks/c/termination-crafted-lit/genady.c [2020-12-09 10:06:02,714 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan/data/2f12f5bf4/19d62e04d50642f4afa7964078d04187/FLAGe60a80bd0 [2020-12-09 10:06:03,144 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan/data/2f12f5bf4/19d62e04d50642f4afa7964078d04187 [2020-12-09 10:06:03,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:06:03,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:06:03,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:06:03,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:06:03,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:06:03,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:06:03" (1/1) ... [2020-12-09 10:06:03,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54715636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:06:03, skipping insertion in model container [2020-12-09 10:06:03,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:06:03" (1/1) ... [2020-12-09 10:06:03,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:06:03,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:06:03,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:06:03,257 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:06:03,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:06:03,273 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:06:03,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:06:03 WrapperNode [2020-12-09 10:06:03,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:06:03,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:06:03,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:06:03,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:06:03,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:06:03" (1/1) ... [2020-12-09 10:06:03,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:06:03" (1/1) ... [2020-12-09 10:06:03,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:06:03,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:06:03,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:06:03,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:06:03,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:06:03" (1/1) ... [2020-12-09 10:06:03,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:06:03" (1/1) ... [2020-12-09 10:06:03,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:06:03" (1/1) ... [2020-12-09 10:06:03,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:06:03" (1/1) ... [2020-12-09 10:06:03,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:06:03" (1/1) ... [2020-12-09 10:06:03,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:06:03" (1/1) ... [2020-12-09 10:06:03,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:06:03" (1/1) ... [2020-12-09 10:06:03,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:06:03,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:06:03,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:06:03,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:06:03,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:06:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:06:03,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:06:03,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:06:03,498 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:06:03,498 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-09 10:06:03,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:06:03 BoogieIcfgContainer [2020-12-09 10:06:03,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:06:03,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:06:03,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:06:03,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:06:03,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:06:03" (1/3) ... [2020-12-09 10:06:03,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa0ccd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:06:03, skipping insertion in model container [2020-12-09 10:06:03,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:06:03" (2/3) ... [2020-12-09 10:06:03,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa0ccd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:06:03, skipping insertion in model container [2020-12-09 10:06:03,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:06:03" (3/3) ... [2020-12-09 10:06:03,509 INFO L111 eAbstractionObserver]: Analyzing ICFG genady.c [2020-12-09 10:06:03,523 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:06:03,526 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 10:06:03,537 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 10:06:03,555 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:06:03,556 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 10:06:03,556 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:06:03,556 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:06:03,556 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:06:03,556 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:06:03,556 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:06:03,556 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:06:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-09 10:06:03,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-09 10:06:03,570 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:06:03,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-12-09 10:06:03,571 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 10:06:03,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:06:03,575 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2020-12-09 10:06:03,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:06:03,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895267491] [2020-12-09 10:06:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:06:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:06:03,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:06:03,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895267491] [2020-12-09 10:06:03,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:06:03,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 10:06:03,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434164134] [2020-12-09 10:06:03,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:06:03,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:06:03,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:06:03,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:06:03,693 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-12-09 10:06:03,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:06:03,728 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-12-09 10:06:03,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:06:03,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-12-09 10:06:03,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:06:03,735 INFO L225 Difference]: With dead ends: 18 [2020-12-09 10:06:03,735 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 10:06:03,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:06:03,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 10:06:03,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 10:06:03,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 10:06:03,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-12-09 10:06:03,761 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 2 [2020-12-09 10:06:03,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:06:03,761 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-12-09 10:06:03,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:06:03,762 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-12-09 10:06:03,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 10:06:03,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:06:03,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 10:06:03,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 10:06:03,763 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 10:06:03,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:06:03,763 INFO L82 PathProgramCache]: Analyzing trace with hash 30977, now seen corresponding path program 1 times [2020-12-09 10:06:03,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:06:03,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286699255] [2020-12-09 10:06:03,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:06:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:06:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:06:03,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286699255] [2020-12-09 10:06:03,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:06:03,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 10:06:03,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080852503] [2020-12-09 10:06:03,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:06:03,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:06:03,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:06:03,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:06:03,782 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2020-12-09 10:06:03,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:06:03,810 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-12-09 10:06:03,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:06:03,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-09 10:06:03,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:06:03,811 INFO L225 Difference]: With dead ends: 21 [2020-12-09 10:06:03,811 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 10:06:03,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:06:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 10:06:03,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2020-12-09 10:06:03,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 10:06:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-09 10:06:03,815 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 3 [2020-12-09 10:06:03,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:06:03,815 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-09 10:06:03,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:06:03,815 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-09 10:06:03,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 10:06:03,815 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:06:03,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 10:06:03,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 10:06:03,816 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 10:06:03,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:06:03,816 INFO L82 PathProgramCache]: Analyzing trace with hash 29770307, now seen corresponding path program 1 times [2020-12-09 10:06:03,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:06:03,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528790305] [2020-12-09 10:06:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:06:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:06:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:06:03,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528790305] [2020-12-09 10:06:03,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:06:03,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 10:06:03,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488464086] [2020-12-09 10:06:03,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:06:03,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:06:03,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:06:03,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:06:03,832 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2020-12-09 10:06:03,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:06:03,849 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-12-09 10:06:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:06:03,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 10:06:03,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:06:03,850 INFO L225 Difference]: With dead ends: 19 [2020-12-09 10:06:03,850 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 10:06:03,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:06:03,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 10:06:03,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-12-09 10:06:03,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-09 10:06:03,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-12-09 10:06:03,854 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 5 [2020-12-09 10:06:03,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:06:03,854 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-12-09 10:06:03,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:06:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-12-09 10:06:03,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 10:06:03,854 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:06:03,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 10:06:03,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 10:06:03,855 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 10:06:03,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:06:03,855 INFO L82 PathProgramCache]: Analyzing trace with hash 922879565, now seen corresponding path program 1 times [2020-12-09 10:06:03,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:06:03,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788361370] [2020-12-09 10:06:03,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:06:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:06:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:06:03,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788361370] [2020-12-09 10:06:03,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:06:03,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 10:06:03,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172443941] [2020-12-09 10:06:03,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:06:03,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:06:03,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:06:03,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:06:03,872 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2020-12-09 10:06:03,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:06:03,888 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-12-09 10:06:03,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:06:03,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 10:06:03,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:06:03,889 INFO L225 Difference]: With dead ends: 17 [2020-12-09 10:06:03,889 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 10:06:03,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:06:03,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 10:06:03,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 10:06:03,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 10:06:03,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-09 10:06:03,893 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 6 [2020-12-09 10:06:03,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:06:03,894 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-09 10:06:03,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:06:03,894 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-09 10:06:03,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 10:06:03,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:06:03,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:06:03,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 10:06:03,895 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 10:06:03,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:06:03,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1455504507, now seen corresponding path program 1 times [2020-12-09 10:06:03,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:06:03,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155537124] [2020-12-09 10:06:03,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:06:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:06:03,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:06:03,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155537124] [2020-12-09 10:06:03,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:06:03,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 10:06:03,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580585136] [2020-12-09 10:06:03,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:06:03,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:06:03,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:06:03,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:06:03,917 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-12-09 10:06:03,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:06:03,928 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-12-09 10:06:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:06:03,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-09 10:06:03,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:06:03,929 INFO L225 Difference]: With dead ends: 16 [2020-12-09 10:06:03,929 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 10:06:03,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:06:03,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 10:06:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-09 10:06:03,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 10:06:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-09 10:06:03,933 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2020-12-09 10:06:03,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:06:03,933 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-09 10:06:03,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:06:03,933 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-09 10:06:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 10:06:03,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:06:03,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:06:03,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 10:06:03,935 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 10:06:03,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:06:03,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2124000591, now seen corresponding path program 1 times [2020-12-09 10:06:03,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:06:03,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877670673] [2020-12-09 10:06:03,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:06:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:06:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:06:03,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877670673] [2020-12-09 10:06:03,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:06:03,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 10:06:03,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483418980] [2020-12-09 10:06:03,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:06:03,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:06:03,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:06:03,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:06:03,958 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2020-12-09 10:06:03,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:06:03,974 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-12-09 10:06:03,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:06:03,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 10:06:03,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:06:03,975 INFO L225 Difference]: With dead ends: 19 [2020-12-09 10:06:03,975 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 10:06:03,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:06:03,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 10:06:03,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-09 10:06:03,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 10:06:03,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-12-09 10:06:03,979 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2020-12-09 10:06:03,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:06:03,979 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-12-09 10:06:03,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:06:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-12-09 10:06:03,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 10:06:03,980 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:06:03,980 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:06:03,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 10:06:03,981 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 10:06:03,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:06:03,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1055103537, now seen corresponding path program 1 times [2020-12-09 10:06:03,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:06:03,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491105110] [2020-12-09 10:06:03,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:06:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:06:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:06:04,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491105110] [2020-12-09 10:06:04,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246323882] [2020-12-09 10:06:04,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan/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 [2020-12-09 10:06:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:06:04,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 10:06:04,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:06:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:06:04,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:06:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:06:04,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [902937853] [2020-12-09 10:06:04,153 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 10:06:04,154 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 10:06:04,157 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 10:06:04,161 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 10:06:04,161 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 10:06:04,280 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 10:06:04,435 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 10:06:04,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 10:06:04,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2020-12-09 10:06:04,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919504583] [2020-12-09 10:06:04,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 10:06:04,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:06:04,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 10:06:04,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-12-09 10:06:04,437 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 11 states. [2020-12-09 10:06:04,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:06:04,496 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-12-09 10:06:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 10:06:04,497 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-12-09 10:06:04,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:06:04,497 INFO L225 Difference]: With dead ends: 30 [2020-12-09 10:06:04,497 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 10:06:04,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-12-09 10:06:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 10:06:04,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2020-12-09 10:06:04,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 10:06:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-12-09 10:06:04,501 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 10 [2020-12-09 10:06:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:06:04,501 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-12-09 10:06:04,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 10:06:04,501 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-12-09 10:06:04,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 10:06:04,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:06:04,501 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1] [2020-12-09 10:06:04,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-09 10:06:04,704 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 10:06:04,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:06:04,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1217672673, now seen corresponding path program 1 times [2020-12-09 10:06:04,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:06:04,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556544529] [2020-12-09 10:06:04,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:06:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:06:04,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:06:04,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556544529] [2020-12-09 10:06:04,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463679491] [2020-12-09 10:06:04,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan/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 [2020-12-09 10:06:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:06:04,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 10:06:04,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:06:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:06:04,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:06:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:06:05,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [489650440] [2020-12-09 10:06:05,007 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 10:06:05,007 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 10:06:05,008 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 10:06:05,008 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 10:06:05,008 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 10:06:05,062 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 10:06:05,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 10:06:05,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [2, 2, 2] total 9 [2020-12-09 10:06:05,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823857861] [2020-12-09 10:06:05,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 10:06:05,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:06:05,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 10:06:05,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-09 10:06:05,172 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 7 states. [2020-12-09 10:06:05,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:06:05,219 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-12-09 10:06:05,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:06:05,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-09 10:06:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:06:05,220 INFO L225 Difference]: With dead ends: 21 [2020-12-09 10:06:05,220 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 10:06:05,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-09 10:06:05,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 10:06:05,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 10:06:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 10:06:05,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 10:06:05,221 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-09 10:06:05,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:06:05,221 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 10:06:05,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 10:06:05,221 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 10:06:05,221 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 10:06:05,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:06:05,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 10:06:05,584 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 18 [2020-12-09 10:06:05,586 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2020-12-09 10:06:05,586 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 10:06:05,586 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2020-12-09 10:06:05,586 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-12-09 10:06:05,586 INFO L262 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-12-09 10:06:05,586 INFO L262 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-12-09 10:06:05,586 INFO L262 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-12-09 10:06:05,586 INFO L262 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-12-09 10:06:05,587 INFO L258 CegarLoopResult]: At program point L15-4(lines 15 18) the Hoare annotation is: (and (<= ULTIMATE.start_main_~j~0 (+ ULTIMATE.start_main_~i~0 1)) (or (and (<= 1 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 10000) (<= ULTIMATE.start_main_~j~0 1) (<= 10000 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~i~0 9999) (<= 2 ULTIMATE.start_main_~j~0)))) [2020-12-09 10:06:05,587 INFO L258 CegarLoopResult]: At program point L15-5(lines 15 18) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 (+ ULTIMATE.start_main_~j~0 9999)) [2020-12-09 10:06:05,587 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2020-12-09 10:06:05,587 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2020-12-09 10:06:05,587 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 10:06:05,587 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-12-09 10:06:05,587 INFO L262 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-12-09 10:06:05,587 INFO L262 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-12-09 10:06:05,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:06:05 BoogieIcfgContainer [2020-12-09 10:06:05,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:06:05,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:06:05,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:06:05,599 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:06:05,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:06:03" (3/4) ... [2020-12-09 10:06:05,601 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 10:06:05,607 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 10:06:05,608 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 10:06:05,608 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 10:06:05,629 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_93784c42-7cd1-48e1-9512-ae8d797e1c52/bin/utaipan/witness.graphml [2020-12-09 10:06:05,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:06:05,629 INFO L168 Benchmark]: Toolchain (without parser) took 2482.78 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 58.4 MB in the beginning and 88.2 MB in the end (delta: -29.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:06:05,630 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 98.6 MB. Free memory was 74.4 MB in the beginning and 74.3 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:06:05,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 126.41 ms. Allocated memory is still 98.6 MB. Free memory was 58.1 MB in the beginning and 75.8 MB in the end (delta: -17.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-12-09 10:06:05,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.42 ms. Allocated memory is still 98.6 MB. Free memory was 75.8 MB in the beginning and 74.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:06:05,631 INFO L168 Benchmark]: Boogie Preprocessor took 11.59 ms. Allocated memory is still 98.6 MB. Free memory was 74.5 MB in the beginning and 73.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:06:05,631 INFO L168 Benchmark]: RCFGBuilder took 194.84 ms. Allocated memory is still 98.6 MB. Free memory was 73.5 MB in the beginning and 73.7 MB in the end (delta: -214.0 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 10:06:05,631 INFO L168 Benchmark]: TraceAbstraction took 2096.37 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 73.2 MB in the beginning and 90.3 MB in the end (delta: -17.1 MB). Peak memory consumption was 57.9 MB. Max. memory is 16.1 GB. [2020-12-09 10:06:05,632 INFO L168 Benchmark]: Witness Printer took 29.94 ms. Allocated memory is still 119.5 MB. Free memory was 90.3 MB in the beginning and 88.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:06:05,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 98.6 MB. Free memory was 74.4 MB in the beginning and 74.3 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 126.41 ms. Allocated memory is still 98.6 MB. Free memory was 58.1 MB in the beginning and 75.8 MB in the end (delta: -17.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 18.42 ms. Allocated memory is still 98.6 MB. Free memory was 75.8 MB in the beginning and 74.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 11.59 ms. Allocated memory is still 98.6 MB. Free memory was 74.5 MB in the beginning and 73.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 194.84 ms. Allocated memory is still 98.6 MB. Free memory was 73.5 MB in the beginning and 73.7 MB in the end (delta: -214.0 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2096.37 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 73.2 MB in the beginning and 90.3 MB in the end (delta: -17.1 MB). Peak memory consumption was 57.9 MB. Max. memory is 16.1 GB. * Witness Printer took 29.94 ms. Allocated memory is still 119.5 MB. Free memory was 90.3 MB in the beginning and 88.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: i <= j + 9999 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: j <= i + 1 && ((((1 <= j && i <= 10000) && j <= 1) && 10000 <= i) || (i <= 9999 && 2 <= j)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 64 SDslu, 7 SDs, 0 SdLazy, 163 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=7, 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, 8 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 32 HoareAnnotationTreeSize, 2 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 108 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 3936 SizeOfPredicates, 0 NumberOfNonLiveVariables, 45 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 0/27 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 55, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 8, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 30, TOOLS_POST_TIME[ms]: 17, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 30, TOOLS_QUANTIFIERELIM_TIME[ms]: 13, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 2, FLUID_QUERY_TIME[ms]: 1, FLUID_QUERIES: 47, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 1, DOMAIN_JOIN_TIME[ms]: 7, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 16, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 3, DOMAIN_ISBOTTOM_APPLICATIONS: 8, DOMAIN_ISBOTTOM_TIME[ms]: 4, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 33, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 33, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 0, PATH_EXPR_TIME[ms]: 0, REGEX_TO_DAG_TIME[ms]: 0, DAG_COMPRESSION_TIME[ms]: 3, DAG_COMPRESSION_PROCESSED_NODES: 76, DAG_COMPRESSION_RETAINED_NODES: 31, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...