./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.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_78134903-6e6c-4850-9db8-455a0cd8c911/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_78134903-6e6c-4850-9db8-455a0cd8c911/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_78134903-6e6c-4850-9db8-455a0cd8c911/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_78134903-6e6c-4850-9db8-455a0cd8c911/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c -s /tmp/vcloud-vcloud-master/worker/run_dir_78134903-6e6c-4850-9db8-455a0cd8c911/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_78134903-6e6c-4850-9db8-455a0cd8c911/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 687269bb6882b72a3d48999f1e5c55a1d5283a94 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 05:11:36,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:11:36,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:11:36,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:11:36,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:11:36,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:11:36,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:11:36,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:11:36,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:11:36,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:11:36,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:11:36,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:11:36,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:11:36,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:11:36,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:11:36,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:11:36,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:11:36,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:11:36,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:11:36,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:11:36,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:11:36,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:11:36,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:11:36,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:11:36,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:11:36,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:11:36,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:11:36,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:11:36,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:11:36,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:11:36,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:11:36,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:11:36,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:11:36,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:11:36,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:11:36,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:11:36,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:11:36,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:11:36,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:11:36,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:11:36,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:11:36,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_78134903-6e6c-4850-9db8-455a0cd8c911/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-09 05:11:36,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:11:36,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:11:36,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:11:36,725 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:11:36,725 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:11:36,725 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:11:36,725 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:11:36,726 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:11:36,726 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:11:36,726 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:11:36,726 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:11:36,726 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:11:36,726 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:11:36,726 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:11:36,726 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:11:36,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:11:36,727 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 05:11:36,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:11:36,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:11:36,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:11:36,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:11:36,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:11:36,728 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 05:11:36,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:11:36,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:11:36,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:11:36,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:11:36,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:11:36,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:11:36,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:11:36,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:11:36,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:11:36,729 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:11:36,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:11:36,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:11:36,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:11:36,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:11:36,729 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_78134903-6e6c-4850-9db8-455a0cd8c911/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_78134903-6e6c-4850-9db8-455a0cd8c911/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 687269bb6882b72a3d48999f1e5c55a1d5283a94 [2020-12-09 05:11:36,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:11:36,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:11:36,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:11:36,939 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:11:36,940 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:11:36,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_78134903-6e6c-4850-9db8-455a0cd8c911/bin/utaipan/../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2020-12-09 05:11:36,990 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_78134903-6e6c-4850-9db8-455a0cd8c911/bin/utaipan/data/2aa787283/624da6c9d01c4a189bc37f1ff29a0155/FLAG6dc4b525f [2020-12-09 05:11:37,353 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:11:37,353 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_78134903-6e6c-4850-9db8-455a0cd8c911/sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2020-12-09 05:11:37,358 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_78134903-6e6c-4850-9db8-455a0cd8c911/bin/utaipan/data/2aa787283/624da6c9d01c4a189bc37f1ff29a0155/FLAG6dc4b525f [2020-12-09 05:11:37,367 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_78134903-6e6c-4850-9db8-455a0cd8c911/bin/utaipan/data/2aa787283/624da6c9d01c4a189bc37f1ff29a0155 [2020-12-09 05:11:37,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:11:37,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:11:37,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:11:37,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:11:37,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:11:37,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:11:37" (1/1) ... [2020-12-09 05:11:37,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68886217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:11:37, skipping insertion in model container [2020-12-09 05:11:37,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:11:37" (1/1) ... [2020-12-09 05:11:37,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:11:37,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:11:37,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:11:37,509 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:11:37,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:11:37,527 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:11:37,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:11:37 WrapperNode [2020-12-09 05:11:37,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:11:37,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:11:37,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:11:37,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:11:37,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:11:37" (1/1) ... [2020-12-09 05:11:37,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:11:37" (1/1) ... [2020-12-09 05:11:37,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:11:37,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:11:37,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:11:37,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:11:37,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:11:37" (1/1) ... [2020-12-09 05:11:37,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:11:37" (1/1) ... [2020-12-09 05:11:37,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:11:37" (1/1) ... [2020-12-09 05:11:37,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:11:37" (1/1) ... [2020-12-09 05:11:37,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:11:37" (1/1) ... [2020-12-09 05:11:37,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:11:37" (1/1) ... [2020-12-09 05:11:37,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:11:37" (1/1) ... [2020-12-09 05:11:37,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:11:37,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:11:37,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:11:37,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:11:37,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:11:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78134903-6e6c-4850-9db8-455a0cd8c911/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 05:11:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:11:37,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:11:37,809 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:11:37,809 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-09 05:11:37,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:11:37 BoogieIcfgContainer [2020-12-09 05:11:37,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:11:37,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:11:37,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:11:37,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:11:37,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:11:37" (1/3) ... [2020-12-09 05:11:37,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662a3938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:11:37, skipping insertion in model container [2020-12-09 05:11:37,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:11:37" (2/3) ... [2020-12-09 05:11:37,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662a3938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:11:37, skipping insertion in model container [2020-12-09 05:11:37,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:11:37" (3/3) ... [2020-12-09 05:11:37,819 INFO L111 eAbstractionObserver]: Analyzing ICFG TelAviv-Amir-Minimum.c [2020-12-09 05:11:37,831 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:11:37,833 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-09 05:11:37,842 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-09 05:11:37,860 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:11:37,860 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:11:37,861 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:11:37,861 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:11:37,861 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:11:37,861 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:11:37,861 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:11:37,861 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:11:37,872 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-12-09 05:11:37,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 05:11:37,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:11:37,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 05:11:37,877 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 05:11:37,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:11:37,881 INFO L82 PathProgramCache]: Analyzing trace with hash 29863588, now seen corresponding path program 1 times [2020-12-09 05:11:37,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:11:37,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417865207] [2020-12-09 05:11:37,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:11:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:11:38,002 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 05:11:38,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417865207] [2020-12-09 05:11:38,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:11:38,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 05:11:38,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134983702] [2020-12-09 05:11:38,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:11:38,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:11:38,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:11:38,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:11:38,019 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-12-09 05:11:38,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:11:38,086 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2020-12-09 05:11:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:11:38,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 05:11:38,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:11:38,095 INFO L225 Difference]: With dead ends: 45 [2020-12-09 05:11:38,095 INFO L226 Difference]: Without dead ends: 41 [2020-12-09 05:11:38,098 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 05:11:38,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-09 05:11:38,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2020-12-09 05:11:38,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 05:11:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2020-12-09 05:11:38,124 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 5 [2020-12-09 05:11:38,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:11:38,125 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2020-12-09 05:11:38,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:11:38,125 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2020-12-09 05:11:38,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 05:11:38,125 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:11:38,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 05:11:38,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:11:38,126 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 05:11:38,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:11:38,127 INFO L82 PathProgramCache]: Analyzing trace with hash 29863780, now seen corresponding path program 1 times [2020-12-09 05:11:38,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:11:38,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637261552] [2020-12-09 05:11:38,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:11:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:11:38,146 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 05:11:38,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637261552] [2020-12-09 05:11:38,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:11:38,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 05:11:38,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738070184] [2020-12-09 05:11:38,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:11:38,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:11:38,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:11:38,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:11:38,149 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 3 states. [2020-12-09 05:11:38,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:11:38,191 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2020-12-09 05:11:38,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:11:38,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 05:11:38,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:11:38,193 INFO L225 Difference]: With dead ends: 50 [2020-12-09 05:11:38,193 INFO L226 Difference]: Without dead ends: 48 [2020-12-09 05:11:38,193 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 05:11:38,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-09 05:11:38,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2020-12-09 05:11:38,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-09 05:11:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2020-12-09 05:11:38,198 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 5 [2020-12-09 05:11:38,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:11:38,199 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2020-12-09 05:11:38,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:11:38,199 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2020-12-09 05:11:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 05:11:38,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:11:38,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 05:11:38,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 05:11:38,200 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 05:11:38,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:11:38,200 INFO L82 PathProgramCache]: Analyzing trace with hash 925771278, now seen corresponding path program 1 times [2020-12-09 05:11:38,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:11:38,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912385583] [2020-12-09 05:11:38,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:11:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:11:38,216 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 05:11:38,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912385583] [2020-12-09 05:11:38,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:11:38,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:11:38,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833348379] [2020-12-09 05:11:38,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:11:38,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:11:38,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:11:38,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:11:38,218 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 3 states. [2020-12-09 05:11:38,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:11:38,236 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2020-12-09 05:11:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:11:38,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 05:11:38,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:11:38,237 INFO L225 Difference]: With dead ends: 39 [2020-12-09 05:11:38,237 INFO L226 Difference]: Without dead ends: 37 [2020-12-09 05:11:38,237 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 05:11:38,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-09 05:11:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-09 05:11:38,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-09 05:11:38,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2020-12-09 05:11:38,241 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 6 [2020-12-09 05:11:38,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:11:38,241 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2020-12-09 05:11:38,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:11:38,241 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2020-12-09 05:11:38,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 05:11:38,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:11:38,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 05:11:38,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 05:11:38,242 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 05:11:38,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:11:38,243 INFO L82 PathProgramCache]: Analyzing trace with hash 925777236, now seen corresponding path program 1 times [2020-12-09 05:11:38,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:11:38,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819186750] [2020-12-09 05:11:38,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:11:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:11:38,258 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 05:11:38,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819186750] [2020-12-09 05:11:38,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:11:38,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:11:38,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339111815] [2020-12-09 05:11:38,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:11:38,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:11:38,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:11:38,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:11:38,260 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 3 states. [2020-12-09 05:11:38,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:11:38,277 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2020-12-09 05:11:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:11:38,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 05:11:38,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:11:38,278 INFO L225 Difference]: With dead ends: 37 [2020-12-09 05:11:38,278 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 05:11:38,278 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 05:11:38,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 05:11:38,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-09 05:11:38,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 05:11:38,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2020-12-09 05:11:38,282 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 6 [2020-12-09 05:11:38,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:11:38,282 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2020-12-09 05:11:38,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:11:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2020-12-09 05:11:38,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 05:11:38,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:11:38,283 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:11:38,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 05:11:38,283 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_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 05:11:38,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:11:38,283 INFO L82 PathProgramCache]: Analyzing trace with hash 149003441, now seen corresponding path program 1 times [2020-12-09 05:11:38,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:11:38,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652191737] [2020-12-09 05:11:38,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:11:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:11:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:11:38,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652191737] [2020-12-09 05:11:38,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:11:38,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:11:38,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097243029] [2020-12-09 05:11:38,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:11:38,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:11:38,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:11:38,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:11:38,310 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand 4 states. [2020-12-09 05:11:38,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:11:38,340 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2020-12-09 05:11:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:11:38,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 05:11:38,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:11:38,341 INFO L225 Difference]: With dead ends: 35 [2020-12-09 05:11:38,341 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:11:38,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:11:38,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:11:38,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:11:38,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:11:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:11:38,342 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-09 05:11:38,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:11:38,342 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:11:38,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:11:38,342 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:11:38,342 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:11:38,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 05:11:38,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 05:11:38,354 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-12-09 05:11:38,354 INFO L262 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-12-09 05:11:38,354 INFO L262 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-12-09 05:11:38,354 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2020-12-09 05:11:38,354 INFO L262 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-12-09 05:11:38,354 INFO L262 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-12-09 05:11:38,355 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2020-12-09 05:11:38,355 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 05:11:38,355 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2020-12-09 05:11:38,355 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2020-12-09 05:11:38,355 INFO L262 CegarLoopResult]: For program point L33(lines 33 37) no Hoare annotation was computed. [2020-12-09 05:11:38,355 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 05:11:38,355 INFO L262 CegarLoopResult]: For program point L33-2(lines 33 37) no Hoare annotation was computed. [2020-12-09 05:11:38,355 INFO L262 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-12-09 05:11:38,355 INFO L262 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-12-09 05:11:38,355 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2020-12-09 05:11:38,355 INFO L262 CegarLoopResult]: For program point L25(lines 25 39) no Hoare annotation was computed. [2020-12-09 05:11:38,355 INFO L258 CegarLoopResult]: At program point L25-2(lines 24 40) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483648) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-12-09 05:11:38,356 INFO L262 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-12-09 05:11:38,356 INFO L262 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-12-09 05:11:38,356 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-12-09 05:11:38,356 INFO L262 CegarLoopResult]: For program point L26(lines 26 30) no Hoare annotation was computed. [2020-12-09 05:11:38,356 INFO L262 CegarLoopResult]: For program point L26-2(lines 26 30) no Hoare annotation was computed. [2020-12-09 05:11:38,356 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2020-12-09 05:11:38,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:11:38 BoogieIcfgContainer [2020-12-09 05:11:38,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:11:38,367 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:11:38,367 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:11:38,367 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:11:38,367 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:11:37" (3/4) ... [2020-12-09 05:11:38,369 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:11:38,376 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 05:11:38,376 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 05:11:38,377 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:11:38,404 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_78134903-6e6c-4850-9db8-455a0cd8c911/bin/utaipan/witness.graphml [2020-12-09 05:11:38,405 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:11:38,406 INFO L168 Benchmark]: Toolchain (without parser) took 1034.85 ms. Allocated memory is still 113.2 MB. Free memory was 76.3 MB in the beginning and 62.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-12-09 05:11:38,406 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 113.2 MB. Free memory is still 92.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:11:38,407 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.61 ms. Allocated memory is still 113.2 MB. Free memory was 76.1 MB in the beginning and 90.1 MB in the end (delta: -14.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 05:11:38,407 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.40 ms. Allocated memory is still 113.2 MB. Free memory was 90.1 MB in the beginning and 88.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:11:38,407 INFO L168 Benchmark]: Boogie Preprocessor took 17.96 ms. Allocated memory is still 113.2 MB. Free memory was 88.6 MB in the beginning and 88.0 MB in the end (delta: 636.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:11:38,408 INFO L168 Benchmark]: RCFGBuilder took 234.76 ms. Allocated memory is still 113.2 MB. Free memory was 88.0 MB in the beginning and 75.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:11:38,408 INFO L168 Benchmark]: TraceAbstraction took 553.37 ms. Allocated memory is still 113.2 MB. Free memory was 74.9 MB in the beginning and 65.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:11:38,408 INFO L168 Benchmark]: Witness Printer took 38.06 ms. Allocated memory is still 113.2 MB. Free memory was 65.0 MB in the beginning and 62.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:11:38,410 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 113.2 MB. Free memory is still 92.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 156.61 ms. Allocated memory is still 113.2 MB. Free memory was 76.1 MB in the beginning and 90.1 MB in the end (delta: -14.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.40 ms. Allocated memory is still 113.2 MB. Free memory was 90.1 MB in the beginning and 88.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.96 ms. Allocated memory is still 113.2 MB. Free memory was 88.6 MB in the beginning and 88.0 MB in the end (delta: 636.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 234.76 ms. Allocated memory is still 113.2 MB. Free memory was 88.0 MB in the beginning and 75.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 553.37 ms. Allocated memory is still 113.2 MB. Free memory was 74.9 MB in the beginning and 65.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Witness Printer took 38.06 ms. Allocated memory is still 113.2 MB. Free memory was 65.0 MB in the beginning and 62.9 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: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: x <= 2147483648 && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 82 SDslu, 20 SDs, 0 SdLazy, 89 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=2, 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, 5 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 7 HoareAnnotationTreeSize, 1 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 446 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 3/3 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: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...