./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/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 32bit --witnessprinter.graph.data.programhash 943a72d31eebdcd925e39756b65615d2a6fd2676 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:08:39,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:08:39,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:08:39,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:08:39,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:08:39,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:08:39,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:08:39,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:08:39,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:08:39,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:08:39,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:08:39,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:08:39,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:08:39,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:08:39,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:08:39,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:08:39,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:08:39,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:08:39,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:08:39,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:08:39,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:08:39,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:08:39,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:08:39,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:08:39,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:08:39,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:08:39,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:08:39,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:08:39,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:08:39,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:08:39,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:08:39,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:08:39,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:08:39,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:08:39,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:08:39,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:08:39,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:08:39,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:08:39,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:08:39,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:08:39,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:08:39,597 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-22 13:08:39,622 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:08:39,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:08:39,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:08:39,624 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:08:39,624 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:08:39,624 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:08:39,625 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:08:39,625 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:08:39,626 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:08:39,626 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:08:39,626 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:08:39,627 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:08:39,627 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:08:39,627 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:08:39,628 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:08:39,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:08:39,629 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:08:39,629 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:08:39,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:08:39,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:08:39,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:08:39,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:08:39,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:08:39,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:08:39,632 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-22 13:08:39,633 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:08:39,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:08:39,633 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:08:39,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:08:39,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:08:39,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:08:39,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:08:39,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:08:39,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:08:39,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:08:39,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:08:39,636 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:08:39,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:08:39,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:08:39,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:08:39,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:08:39,637 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_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 943a72d31eebdcd925e39756b65615d2a6fd2676 [2020-11-22 13:08:39,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:08:39,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:08:39,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:08:39,889 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:08:39,890 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:08:39,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i [2020-11-22 13:08:39,977 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/bin/utaipan/data/c0931ae28/314245426e954690b9d78eadaecac4c8/FLAGd3386e6dc [2020-11-22 13:08:40,434 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:08:40,435 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i [2020-11-22 13:08:40,443 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/bin/utaipan/data/c0931ae28/314245426e954690b9d78eadaecac4c8/FLAGd3386e6dc [2020-11-22 13:08:40,805 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/bin/utaipan/data/c0931ae28/314245426e954690b9d78eadaecac4c8 [2020-11-22 13:08:40,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:08:40,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:08:40,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:40,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:08:40,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:08:40,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:40" (1/1) ... [2020-11-22 13:08:40,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b9618b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:40, skipping insertion in model container [2020-11-22 13:08:40,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:40" (1/1) ... [2020-11-22 13:08:40,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:08:40,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:08:41,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:41,033 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:08:41,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:41,076 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:08:41,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:41 WrapperNode [2020-11-22 13:08:41,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:41,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:41,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:08:41,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:08:41,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:41" (1/1) ... [2020-11-22 13:08:41,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:41" (1/1) ... [2020-11-22 13:08:41,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:41,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:08:41,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:08:41,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:08:41,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:41" (1/1) ... [2020-11-22 13:08:41,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:41" (1/1) ... [2020-11-22 13:08:41,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:41" (1/1) ... [2020-11-22 13:08:41,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:41" (1/1) ... [2020-11-22 13:08:41,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:41" (1/1) ... [2020-11-22 13:08:41,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:41" (1/1) ... [2020-11-22 13:08:41,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:41" (1/1) ... [2020-11-22 13:08:41,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:08:41,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:08:41,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:08:41,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:08:41,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/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 [2020-11-22 13:08:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:08:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:08:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:08:41,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:08:41,613 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:08:41,613 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:08:41,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:41 BoogieIcfgContainer [2020-11-22 13:08:41,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:08:41,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:08:41,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:08:41,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:08:41,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:08:40" (1/3) ... [2020-11-22 13:08:41,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc3f641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:41, skipping insertion in model container [2020-11-22 13:08:41,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:41" (2/3) ... [2020-11-22 13:08:41,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc3f641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:41, skipping insertion in model container [2020-11-22 13:08:41,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:41" (3/3) ... [2020-11-22 13:08:41,623 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark01_conjunctive.i [2020-11-22 13:08:41,634 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:08:41,638 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:08:41,648 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:08:41,670 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:08:41,671 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:08:41,671 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:08:41,671 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:08:41,671 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:08:41,671 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:08:41,671 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:08:41,671 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:08:41,683 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-11-22 13:08:41,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:08:41,687 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:41,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:08:41,688 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:41,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:41,694 INFO L82 PathProgramCache]: Analyzing trace with hash 2152192, now seen corresponding path program 1 times [2020-11-22 13:08:41,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:41,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791222016] [2020-11-22 13:08:41,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:41,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791222016] [2020-11-22 13:08:41,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:41,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:41,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10785926] [2020-11-22 13:08:41,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:41,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:41,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:41,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:41,881 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-11-22 13:08:41,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:41,939 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-11-22 13:08:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:41,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-22 13:08:41,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:41,947 INFO L225 Difference]: With dead ends: 15 [2020-11-22 13:08:41,948 INFO L226 Difference]: Without dead ends: 10 [2020-11-22 13:08:41,950 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 [2020-11-22 13:08:41,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-22 13:08:41,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-11-22 13:08:41,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-22 13:08:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-22 13:08:41,991 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2020-11-22 13:08:41,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:41,991 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-22 13:08:41,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:41,992 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-22 13:08:41,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:08:41,992 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:41,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:08:41,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:08:41,993 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:41,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:41,999 INFO L82 PathProgramCache]: Analyzing trace with hash 66718002, now seen corresponding path program 1 times [2020-11-22 13:08:41,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:42,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312814317] [2020-11-22 13:08:42,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:42,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:42,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312814317] [2020-11-22 13:08:42,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:42,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:42,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828621857] [2020-11-22 13:08:42,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:42,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:42,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:42,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:42,089 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2020-11-22 13:08:42,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:42,113 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-22 13:08:42,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:42,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-22 13:08:42,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:42,114 INFO L225 Difference]: With dead ends: 9 [2020-11-22 13:08:42,115 INFO L226 Difference]: Without dead ends: 8 [2020-11-22 13:08:42,115 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 [2020-11-22 13:08:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-22 13:08:42,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-22 13:08:42,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-22 13:08:42,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-22 13:08:42,119 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2020-11-22 13:08:42,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:42,120 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-22 13:08:42,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:42,120 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-22 13:08:42,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:08:42,121 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:42,121 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-11-22 13:08:42,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:08:42,121 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:42,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:42,122 INFO L82 PathProgramCache]: Analyzing trace with hash -308508044, now seen corresponding path program 1 times [2020-11-22 13:08:42,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:42,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193749723] [2020-11-22 13:08:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:42,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:42,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193749723] [2020-11-22 13:08:42,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284587140] [2020-11-22 13:08:42,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/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 [2020-11-22 13:08:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:42,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:08:42,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:42,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:42,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:42,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1766622327] [2020-11-22 13:08:42,420 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-22 13:08:42,420 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:08:42,425 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:08:42,430 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:08:42,431 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:08:43,005 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:08:43,209 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-22 13:08:43,542 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-11-22 13:08:43,716 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:08:43,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 13:08:43,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2020-11-22 13:08:43,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970015018] [2020-11-22 13:08:43,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:08:43,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:43,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:08:43,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:08:43,718 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2020-11-22 13:08:43,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:43,773 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2020-11-22 13:08:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:08:43,774 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-11-22 13:08:43,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:43,774 INFO L225 Difference]: With dead ends: 18 [2020-11-22 13:08:43,774 INFO L226 Difference]: Without dead ends: 17 [2020-11-22 13:08:43,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-11-22 13:08:43,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-22 13:08:43,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-22 13:08:43,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-22 13:08:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-22 13:08:43,779 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2020-11-22 13:08:43,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:43,781 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-22 13:08:43,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:08:43,782 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-22 13:08:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 13:08:43,782 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:43,783 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2020-11-22 13:08:43,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-22 13:08:43,997 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:43,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:43,997 INFO L82 PathProgramCache]: Analyzing trace with hash -854200832, now seen corresponding path program 2 times [2020-11-22 13:08:43,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:43,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017709362] [2020-11-22 13:08:43,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:44,114 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:44,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017709362] [2020-11-22 13:08:44,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970620041] [2020-11-22 13:08:44,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:44,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-22 13:08:44,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-22 13:08:44,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-22 13:08:44,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:44,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:44,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1064407598] [2020-11-22 13:08:44,478 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-22 13:08:44,478 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:08:44,479 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:08:44,479 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:08:44,479 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:08:44,693 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:08:44,936 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-22 13:08:45,366 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-11-22 13:08:45,549 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:08:45,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 13:08:45,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2020-11-22 13:08:45,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059143077] [2020-11-22 13:08:45,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-22 13:08:45,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:45,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-22 13:08:45,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-11-22 13:08:45,552 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 17 states. [2020-11-22 13:08:45,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:45,640 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-11-22 13:08:45,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-22 13:08:45,640 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2020-11-22 13:08:45,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:45,642 INFO L225 Difference]: With dead ends: 36 [2020-11-22 13:08:45,642 INFO L226 Difference]: Without dead ends: 35 [2020-11-22 13:08:45,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2020-11-22 13:08:45,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-22 13:08:45,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-22 13:08:45,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-22 13:08:45,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-11-22 13:08:45,654 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 16 [2020-11-22 13:08:45,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:45,655 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-11-22 13:08:45,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-22 13:08:45,655 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-11-22 13:08:45,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-22 13:08:45,657 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:45,658 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1] [2020-11-22 13:08:45,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:45,877 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:45,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:45,878 INFO L82 PathProgramCache]: Analyzing trace with hash -187047808, now seen corresponding path program 3 times [2020-11-22 13:08:45,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:45,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175229660] [2020-11-22 13:08:45,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:46,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175229660] [2020-11-22 13:08:46,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888623957] [2020-11-22 13:08:46,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:46,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-22 13:08:46,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-22 13:08:46,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-22 13:08:46,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:46,422 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:46,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:46,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1179806944] [2020-11-22 13:08:46,752 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-22 13:08:46,753 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:08:46,753 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:08:46,753 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:08:46,753 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:08:46,950 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:08:47,172 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-22 13:08:47,486 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-11-22 13:08:47,676 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:08:47,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 13:08:47,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2020-11-22 13:08:47,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241746520] [2020-11-22 13:08:47,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-22 13:08:47,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:47,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-22 13:08:47,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=1016, Unknown=0, NotChecked=0, Total=1560 [2020-11-22 13:08:47,679 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 35 states. [2020-11-22 13:08:47,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:47,871 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-11-22 13:08:47,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-22 13:08:47,872 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 34 [2020-11-22 13:08:47,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:47,874 INFO L225 Difference]: With dead ends: 72 [2020-11-22 13:08:47,874 INFO L226 Difference]: Without dead ends: 71 [2020-11-22 13:08:47,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=579, Invalid=1061, Unknown=0, NotChecked=0, Total=1640 [2020-11-22 13:08:47,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-22 13:08:47,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-11-22 13:08:47,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-22 13:08:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-11-22 13:08:47,886 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 34 [2020-11-22 13:08:47,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:47,886 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-11-22 13:08:47,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-11-22 13:08:47,887 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-11-22 13:08:47,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-22 13:08:47,889 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:47,889 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1] [2020-11-22 13:08:48,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-22 13:08:48,108 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:48,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:48,109 INFO L82 PathProgramCache]: Analyzing trace with hash -208476800, now seen corresponding path program 4 times [2020-11-22 13:08:48,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:48,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605982861] [2020-11-22 13:08:48,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:48,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605982861] [2020-11-22 13:08:48,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234519810] [2020-11-22 13:08:48,823 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:48,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 47 conjunts are in the unsatisfiable core [2020-11-22 13:08:48,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:50,628 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:50,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:51,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [430655255] [2020-11-22 13:08:51,676 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-22 13:08:51,676 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:08:51,677 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:08:51,677 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:08:51,678 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:08:51,919 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:08:52,205 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-22 13:08:52,602 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-11-22 13:08:52,798 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:08:52,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 13:08:52,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2020-11-22 13:08:52,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663797403] [2020-11-22 13:08:52,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-11-22 13:08:52,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:52,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-11-22 13:08:52,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2104, Invalid=3596, Unknown=0, NotChecked=0, Total=5700 [2020-11-22 13:08:52,804 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 71 states. [2020-11-22 13:08:53,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:53,091 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2020-11-22 13:08:53,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-22 13:08:53,092 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 70 [2020-11-22 13:08:53,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:53,093 INFO L225 Difference]: With dead ends: 96 [2020-11-22 13:08:53,093 INFO L226 Difference]: Without dead ends: 95 [2020-11-22 13:08:53,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3172 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2175, Invalid=3677, Unknown=0, NotChecked=0, Total=5852 [2020-11-22 13:08:53,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-11-22 13:08:53,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-11-22 13:08:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-22 13:08:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-11-22 13:08:53,121 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 70 [2020-11-22 13:08:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:53,125 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-11-22 13:08:53,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-11-22 13:08:53,126 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-11-22 13:08:53,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-22 13:08:53,132 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:53,132 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 1, 1, 1] [2020-11-22 13:08:53,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:53,349 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:53,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:53,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1846602880, now seen corresponding path program 5 times [2020-11-22 13:08:53,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:53,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497299062] [2020-11-22 13:08:53,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:08:53,434 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:08:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:08:53,499 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:08:53,528 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:08:53,529 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:08:53,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-11-22 13:08:53,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:08:53 BoogieIcfgContainer [2020-11-22 13:08:53,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:08:53,614 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:08:53,614 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:08:53,614 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:08:53,614 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:41" (3/4) ... [2020-11-22 13:08:53,616 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:08:53,714 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f2a254c2-69ee-46a5-8a0c-4722c6b178ca/bin/utaipan/witness.graphml [2020-11-22 13:08:53,714 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:08:53,715 INFO L168 Benchmark]: Toolchain (without parser) took 12905.72 ms. Allocated memory was 96.5 MB in the beginning and 209.7 MB in the end (delta: 113.2 MB). Free memory was 64.5 MB in the beginning and 154.5 MB in the end (delta: -90.1 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:53,718 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 52.5 MB in the beginning and 52.4 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:53,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.64 ms. Allocated memory is still 96.5 MB. Free memory was 64.2 MB in the beginning and 75.7 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:53,719 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.00 ms. Allocated memory is still 96.5 MB. Free memory was 75.2 MB in the beginning and 74.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:53,719 INFO L168 Benchmark]: Boogie Preprocessor took 23.43 ms. Allocated memory is still 96.5 MB. Free memory was 74.1 MB in the beginning and 73.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:53,719 INFO L168 Benchmark]: RCFGBuilder took 480.52 ms. Allocated memory is still 96.5 MB. Free memory was 73.1 MB in the beginning and 57.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:53,720 INFO L168 Benchmark]: TraceAbstraction took 11996.84 ms. Allocated memory was 96.5 MB in the beginning and 209.7 MB in the end (delta: 113.2 MB). Free memory was 56.8 MB in the beginning and 159.8 MB in the end (delta: -103.0 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:53,720 INFO L168 Benchmark]: Witness Printer took 100.68 ms. Allocated memory is still 209.7 MB. Free memory was 159.8 MB in the beginning and 154.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:53,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 52.5 MB in the beginning and 52.4 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 254.64 ms. Allocated memory is still 96.5 MB. Free memory was 64.2 MB in the beginning and 75.7 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.00 ms. Allocated memory is still 96.5 MB. Free memory was 75.2 MB in the beginning and 74.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.43 ms. Allocated memory is still 96.5 MB. Free memory was 74.1 MB in the beginning and 73.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 480.52 ms. Allocated memory is still 96.5 MB. Free memory was 73.1 MB in the beginning and 57.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11996.84 ms. Allocated memory was 96.5 MB in the beginning and 209.7 MB in the end (delta: 113.2 MB). Free memory was 56.8 MB in the beginning and 159.8 MB in the end (delta: -103.0 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * Witness Printer took 100.68 ms. Allocated memory is still 209.7 MB. Free memory was 159.8 MB in the beginning and 154.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(x==1 && y==1)) [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] x+y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.8s, OverallIterations: 7, TraceHistogramMax: 31, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 96 SDslu, 97 SDs, 0 SdLazy, 228 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 426 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4141 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 376 ConstructedInterpolants, 46 QuantifiedInterpolants, 191062 SizeOfPredicates, 8 NumberOfNonLiveVariables, 399 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2760 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 incorrect! Received shutdown request...