./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.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_a8e283a6-b488-4e4c-a340-020010fc34c1/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a8e283a6-b488-4e4c-a340-020010fc34c1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a8e283a6-b488-4e4c-a340-020010fc34c1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a8e283a6-b488-4e4c-a340-020010fc34c1/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a8e283a6-b488-4e4c-a340-020010fc34c1/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a8e283a6-b488-4e4c-a340-020010fc34c1/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 f560e32afd5a40adf4a98abbf810cb377947c4f4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 15:58:54,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 15:58:54,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 15:58:54,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 15:58:54,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 15:58:54,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 15:58:54,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 15:58:54,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 15:58:54,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 15:58:54,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 15:58:54,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 15:58:54,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 15:58:54,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 15:58:54,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 15:58:54,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 15:58:54,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 15:58:54,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 15:58:54,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 15:58:54,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 15:58:54,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 15:58:54,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 15:58:54,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 15:58:54,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 15:58:54,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 15:58:54,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 15:58:54,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 15:58:54,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 15:58:54,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 15:58:54,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 15:58:54,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 15:58:54,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 15:58:54,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 15:58:54,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 15:58:54,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 15:58:54,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 15:58:54,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 15:58:54,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 15:58:54,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 15:58:54,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 15:58:54,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 15:58:54,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 15:58:54,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a8e283a6-b488-4e4c-a340-020010fc34c1/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-09 15:58:54,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 15:58:54,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 15:58:54,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 15:58:54,665 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 15:58:54,665 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 15:58:54,665 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 15:58:54,665 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 15:58:54,665 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 15:58:54,665 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 15:58:54,666 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 15:58:54,666 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 15:58:54,666 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 15:58:54,666 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 15:58:54,666 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 15:58:54,666 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 15:58:54,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 15:58:54,667 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 15:58:54,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 15:58:54,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 15:58:54,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 15:58:54,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 15:58:54,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 15:58:54,668 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 15:58:54,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 15:58:54,669 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 15:58:54,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 15:58:54,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 15:58:54,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 15:58:54,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 15:58:54,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 15:58:54,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 15:58:54,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 15:58:54,670 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 15:58:54,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 15:58:54,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 15:58:54,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 15:58:54,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 15:58:54,671 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_a8e283a6-b488-4e4c-a340-020010fc34c1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a8e283a6-b488-4e4c-a340-020010fc34c1/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f560e32afd5a40adf4a98abbf810cb377947c4f4 [2020-12-09 15:58:54,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 15:58:54,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 15:58:54,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 15:58:54,879 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 15:58:54,880 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 15:58:54,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a8e283a6-b488-4e4c-a340-020010fc34c1/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2020-12-09 15:58:54,920 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a8e283a6-b488-4e4c-a340-020010fc34c1/bin/utaipan/data/5f379482d/eb940175d29d4dbd908073e32b57f37d/FLAGbf7722729 [2020-12-09 15:58:55,267 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 15:58:55,268 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a8e283a6-b488-4e4c-a340-020010fc34c1/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2020-12-09 15:58:55,272 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a8e283a6-b488-4e4c-a340-020010fc34c1/bin/utaipan/data/5f379482d/eb940175d29d4dbd908073e32b57f37d/FLAGbf7722729 [2020-12-09 15:58:55,702 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a8e283a6-b488-4e4c-a340-020010fc34c1/bin/utaipan/data/5f379482d/eb940175d29d4dbd908073e32b57f37d [2020-12-09 15:58:55,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 15:58:55,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 15:58:55,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 15:58:55,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 15:58:55,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 15:58:55,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:58:55" (1/1) ... [2020-12-09 15:58:55,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321b358c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:55, skipping insertion in model container [2020-12-09 15:58:55,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:58:55" (1/1) ... [2020-12-09 15:58:55,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 15:58:55,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 15:58:55,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:58:55,822 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 15:58:55,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:58:55,839 INFO L208 MainTranslator]: Completed translation [2020-12-09 15:58:55,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:55 WrapperNode [2020-12-09 15:58:55,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 15:58:55,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 15:58:55,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 15:58:55,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 15:58:55,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:55" (1/1) ... [2020-12-09 15:58:55,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:55" (1/1) ... [2020-12-09 15:58:55,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 15:58:55,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 15:58:55,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 15:58:55,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 15:58:55,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:55" (1/1) ... [2020-12-09 15:58:55,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:55" (1/1) ... [2020-12-09 15:58:55,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:55" (1/1) ... [2020-12-09 15:58:55,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:55" (1/1) ... [2020-12-09 15:58:55,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:55" (1/1) ... [2020-12-09 15:58:55,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:55" (1/1) ... [2020-12-09 15:58:55,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:55" (1/1) ... [2020-12-09 15:58:55,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 15:58:55,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 15:58:55,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 15:58:55,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 15:58:55,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8e283a6-b488-4e4c-a340-020010fc34c1/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 15:58:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 15:58:55,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 15:58:56,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 15:58:56,052 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-09 15:58:56,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:58:56 BoogieIcfgContainer [2020-12-09 15:58:56,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 15:58:56,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 15:58:56,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 15:58:56,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 15:58:56,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:58:55" (1/3) ... [2020-12-09 15:58:56,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40994803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:58:56, skipping insertion in model container [2020-12-09 15:58:56,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:55" (2/3) ... [2020-12-09 15:58:56,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40994803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:58:56, skipping insertion in model container [2020-12-09 15:58:56,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:58:56" (3/3) ... [2020-12-09 15:58:56,061 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2020-12-09 15:58:56,072 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 15:58:56,075 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 15:58:56,083 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 15:58:56,102 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 15:58:56,102 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 15:58:56,102 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 15:58:56,102 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 15:58:56,102 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 15:58:56,102 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 15:58:56,102 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 15:58:56,102 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 15:58:56,113 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-12-09 15:58:56,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 15:58:56,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:58:56,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 15:58:56,117 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 15:58:56,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:58:56,122 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2020-12-09 15:58:56,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:58:56,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506699939] [2020-12-09 15:58:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:58:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:58:56,244 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 15:58:56,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506699939] [2020-12-09 15:58:56,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:58:56,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:58:56,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225951450] [2020-12-09 15:58:56,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:58:56,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:58:56,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:58:56,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:58:56,260 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-12-09 15:58:56,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:58:56,334 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-12-09 15:58:56,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 15:58:56,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 15:58:56,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:58:56,344 INFO L225 Difference]: With dead ends: 25 [2020-12-09 15:58:56,344 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 15:58:56,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:58:56,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 15:58:56,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2020-12-09 15:58:56,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 15:58:56,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-12-09 15:58:56,380 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 5 [2020-12-09 15:58:56,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:58:56,380 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-12-09 15:58:56,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:58:56,381 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-12-09 15:58:56,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 15:58:56,381 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:58:56,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 15:58:56,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 15:58:56,382 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 15:58:56,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:58:56,383 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2020-12-09 15:58:56,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:58:56,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363133768] [2020-12-09 15:58:56,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:58:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:58:56,418 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 15:58:56,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363133768] [2020-12-09 15:58:56,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:58:56,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:58:56,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261411625] [2020-12-09 15:58:56,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:58:56,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:58:56,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:58:56,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:58:56,423 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2020-12-09 15:58:56,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:58:56,470 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2020-12-09 15:58:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 15:58:56,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 15:58:56,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:58:56,472 INFO L225 Difference]: With dead ends: 21 [2020-12-09 15:58:56,472 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 15:58:56,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:58:56,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 15:58:56,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-12-09 15:58:56,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 15:58:56,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-12-09 15:58:56,478 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 5 [2020-12-09 15:58:56,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:58:56,479 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-12-09 15:58:56,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:58:56,479 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-12-09 15:58:56,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 15:58:56,479 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:58:56,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 15:58:56,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 15:58:56,480 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 15:58:56,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:58:56,481 INFO L82 PathProgramCache]: Analyzing trace with hash 920230152, now seen corresponding path program 1 times [2020-12-09 15:58:56,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:58:56,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128717474] [2020-12-09 15:58:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:58:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:58:56,507 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 15:58:56,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128717474] [2020-12-09 15:58:56,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:58:56,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:58:56,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667941157] [2020-12-09 15:58:56,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:58:56,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:58:56,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:58:56,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:58:56,511 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 3 states. [2020-12-09 15:58:56,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:58:56,541 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-12-09 15:58:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:58:56,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 15:58:56,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:58:56,548 INFO L225 Difference]: With dead ends: 20 [2020-12-09 15:58:56,548 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 15:58:56,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:58:56,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 15:58:56,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-12-09 15:58:56,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 15:58:56,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-12-09 15:58:56,554 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 6 [2020-12-09 15:58:56,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:58:56,554 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-12-09 15:58:56,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:58:56,554 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-12-09 15:58:56,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 15:58:56,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:58:56,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 15:58:56,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 15:58:56,555 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 15:58:56,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:58:56,556 INFO L82 PathProgramCache]: Analyzing trace with hash 920236110, now seen corresponding path program 1 times [2020-12-09 15:58:56,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:58:56,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929942019] [2020-12-09 15:58:56,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:58:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:58:56,579 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 15:58:56,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929942019] [2020-12-09 15:58:56,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:58:56,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 15:58:56,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957219331] [2020-12-09 15:58:56,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:58:56,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:58:56,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:58:56,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:58:56,583 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 3 states. [2020-12-09 15:58:56,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:58:56,605 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2020-12-09 15:58:56,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:58:56,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 15:58:56,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:58:56,606 INFO L225 Difference]: With dead ends: 31 [2020-12-09 15:58:56,607 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 15:58:56,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:58:56,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 15:58:56,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-09 15:58:56,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 15:58:56,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-12-09 15:58:56,611 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2020-12-09 15:58:56,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:58:56,611 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-12-09 15:58:56,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:58:56,612 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-12-09 15:58:56,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 15:58:56,612 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:58:56,612 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:58:56,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 15:58:56,613 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 15:58:56,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:58:56,614 INFO L82 PathProgramCache]: Analyzing trace with hash -22254561, now seen corresponding path program 1 times [2020-12-09 15:58:56,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:58:56,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119627010] [2020-12-09 15:58:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:58:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:58:56,651 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 15:58:56,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119627010] [2020-12-09 15:58:56,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928743786] [2020-12-09 15:58:56,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8e283a6-b488-4e4c-a340-020010fc34c1/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 15:58:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:58:56,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 15:58:56,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:58:56,750 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 15:58:56,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:58:56,790 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 15:58:56,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [316046966] [2020-12-09 15:58:56,810 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 15:58:56,810 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 15:58:56,815 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 15:58:56,820 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 15:58:56,821 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 15:58:56,941 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 15:58:57,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 15:58:57,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 12 [2020-12-09 15:58:57,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245505529] [2020-12-09 15:58:57,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 15:58:57,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:58:57,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 15:58:57,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-09 15:58:57,060 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 7 states. [2020-12-09 15:58:57,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:58:57,141 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-12-09 15:58:57,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 15:58:57,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-12-09 15:58:57,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:58:57,142 INFO L225 Difference]: With dead ends: 24 [2020-12-09 15:58:57,142 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 15:58:57,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2020-12-09 15:58:57,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 15:58:57,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-12-09 15:58:57,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 15:58:57,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-12-09 15:58:57,145 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2020-12-09 15:58:57,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:58:57,145 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-12-09 15:58:57,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 15:58:57,146 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-12-09 15:58:57,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 15:58:57,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:58:57,146 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:58:57,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:58:57,348 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 15:58:57,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:58:57,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1134385574, now seen corresponding path program 1 times [2020-12-09 15:58:57,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:58:57,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972487534] [2020-12-09 15:58:57,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:58:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:58:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 15:58:57,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972487534] [2020-12-09 15:58:57,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:58:57,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:58:57,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694669935] [2020-12-09 15:58:57,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:58:57,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:58:57,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:58:57,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:58:57,427 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-12-09 15:58:57,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:58:57,508 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-12-09 15:58:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 15:58:57,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 15:58:57,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:58:57,511 INFO L225 Difference]: With dead ends: 24 [2020-12-09 15:58:57,511 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 15:58:57,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:58:57,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 15:58:57,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-12-09 15:58:57,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 15:58:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-12-09 15:58:57,519 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2020-12-09 15:58:57,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:58:57,520 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-12-09 15:58:57,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:58:57,520 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-12-09 15:58:57,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 15:58:57,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:58:57,522 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-09 15:58:57,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-09 15:58:57,522 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 15:58:57,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:58:57,523 INFO L82 PathProgramCache]: Analyzing trace with hash -297818609, now seen corresponding path program 2 times [2020-12-09 15:58:57,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:58:57,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911220810] [2020-12-09 15:58:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:58:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:58:57,558 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 15:58:57,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911220810] [2020-12-09 15:58:57,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:58:57,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:58:57,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754169067] [2020-12-09 15:58:57,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:58:57,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:58:57,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:58:57,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:58:57,561 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-12-09 15:58:57,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:58:57,576 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-12-09 15:58:57,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 15:58:57,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-09 15:58:57,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:58:57,577 INFO L225 Difference]: With dead ends: 26 [2020-12-09 15:58:57,577 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 15:58:57,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:58:57,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 15:58:57,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 15:58:57,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 15:58:57,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 15:58:57,578 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-09 15:58:57,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:58:57,578 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 15:58:57,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:58:57,578 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 15:58:57,578 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 15:58:57,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-09 15:58:57,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 15:58:57,639 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-12-09 15:58:57,639 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 15:58:57,640 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-12-09 15:58:57,640 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-12-09 15:58:57,640 INFO L262 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-12-09 15:58:57,640 INFO L262 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-12-09 15:58:57,640 INFO L262 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-12-09 15:58:57,640 INFO L262 CegarLoopResult]: For program point L17(lines 17 26) no Hoare annotation was computed. [2020-12-09 15:58:57,640 INFO L258 CegarLoopResult]: At program point L17-1(lines 17 26) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 2147483647) [2020-12-09 15:58:57,641 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-12-09 15:58:57,641 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-12-09 15:58:57,641 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 15:58:57,641 INFO L262 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-12-09 15:58:57,641 INFO L258 CegarLoopResult]: At program point L20-2(lines 19 25) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~n~0 2147483647))) (or (and (<= 0 ULTIMATE.start_main_~i~0) (<= 0 ULTIMATE.start_main_~m~0) (or (and (< ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~i~0)) (<= (+ ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~i~0) 2147483647)) (<= 0 ULTIMATE.start_main_~n~0) .cse0) (and (<= 0 (+ ULTIMATE.start_main_~n~0 2147483648)) (<= (+ ULTIMATE.start_main_~i~0 2) ULTIMATE.start_main_~m~0) (<= ULTIMATE.start_main_~m~0 2147483647) .cse0 (<= 0 (+ ULTIMATE.start_main_~m~0 2147483648))))) [2020-12-09 15:58:57,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:58:57 BoogieIcfgContainer [2020-12-09 15:58:57,655 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 15:58:57,655 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 15:58:57,659 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 15:58:57,659 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 15:58:57,660 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:58:56" (3/4) ... [2020-12-09 15:58:57,662 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 15:58:57,667 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-09 15:58:57,668 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 15:58:57,668 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 15:58:57,691 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a8e283a6-b488-4e4c-a340-020010fc34c1/bin/utaipan/witness.graphml [2020-12-09 15:58:57,691 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 15:58:57,692 INFO L168 Benchmark]: Toolchain (without parser) took 1985.74 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 60.1 MB in the beginning and 107.9 MB in the end (delta: -47.8 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. [2020-12-09 15:58:57,692 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 100.7 MB. Free memory is still 76.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:58:57,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 132.92 ms. Allocated memory is still 100.7 MB. Free memory was 59.8 MB in the beginning and 77.7 MB in the end (delta: -17.9 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:58:57,693 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.96 ms. Allocated memory is still 100.7 MB. Free memory was 77.7 MB in the beginning and 76.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:58:57,693 INFO L168 Benchmark]: Boogie Preprocessor took 11.25 ms. Allocated memory is still 100.7 MB. Free memory was 76.5 MB in the beginning and 75.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:58:57,694 INFO L168 Benchmark]: RCFGBuilder took 182.30 ms. Allocated memory is still 100.7 MB. Free memory was 75.4 MB in the beginning and 74.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 15:58:57,694 INFO L168 Benchmark]: TraceAbstraction took 1599.99 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 73.9 MB in the beginning and 49.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 56.8 MB. Max. memory is 16.1 GB. [2020-12-09 15:58:57,695 INFO L168 Benchmark]: Witness Printer took 35.24 ms. Allocated memory is still 132.1 MB. Free memory was 49.7 MB in the beginning and 107.9 MB in the end (delta: -58.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:58:57,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 100.7 MB. Free memory is still 76.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 132.92 ms. Allocated memory is still 100.7 MB. Free memory was 59.8 MB in the beginning and 77.7 MB in the end (delta: -17.9 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 18.96 ms. Allocated memory is still 100.7 MB. Free memory was 77.7 MB in the beginning and 76.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 11.25 ms. Allocated memory is still 100.7 MB. Free memory was 76.5 MB in the beginning and 75.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 182.30 ms. Allocated memory is still 100.7 MB. Free memory was 75.4 MB in the beginning and 74.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1599.99 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 73.9 MB in the beginning and 49.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 56.8 MB. Max. memory is 16.1 GB. * Witness Printer took 35.24 ms. Allocated memory is still 132.1 MB. Free memory was 49.7 MB in the beginning and 107.9 MB in the end (delta: -58.2 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: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: n <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((((0 <= i && 0 <= m) && ((m < n && n == i) || m + i <= 2147483647)) && 0 <= n) && n <= 2147483647) || ((((0 <= n + 2147483648 && i + 2 <= m) && m <= 2147483647) && n <= 2147483647) && 0 <= m + 2147483648) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 94 SDslu, 1 SDs, 0 SdLazy, 150 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 52 HoareAnnotationTreeSize, 2 FomulaSimplifications, 28 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 1804 SizeOfPredicates, 3 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 22/28 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]: 131, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 7, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 20, 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: 20, TOOLS_QUANTIFIERELIM_TIME[ms]: 13, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 4, FLUID_QUERY_TIME[ms]: 2, FLUID_QUERIES: 36, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 1, DOMAIN_JOIN_TIME[ms]: 12, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 57, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 4, DOMAIN_ISBOTTOM_APPLICATIONS: 7, DOMAIN_ISBOTTOM_TIME[ms]: 5, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 75, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 74, 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]: 2, PATH_EXPR_TIME[ms]: 2, REGEX_TO_DAG_TIME[ms]: 2, DAG_COMPRESSION_TIME[ms]: 6, DAG_COMPRESSION_PROCESSED_NODES: 56, DAG_COMPRESSION_RETAINED_NODES: 26, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...