./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1607371fd277a0caff8230eb2b5f9f1019931ed9 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:34:26,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:34:27,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:34:27,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:34:27,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:34:27,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:34:27,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:34:27,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:34:27,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:34:27,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:34:27,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:34:27,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:34:27,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:34:27,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:34:27,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:34:27,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:34:27,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:34:27,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:34:27,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:34:27,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:34:27,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:34:27,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:34:27,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:34:27,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:34:27,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:34:27,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:34:27,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:34:27,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:34:27,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:34:27,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:34:27,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:34:27,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:34:27,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:34:27,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:34:27,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:34:27,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:34:27,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:34:27,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:34:27,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:34:27,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:34:27,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:34:27,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:34:27,140 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:34:27,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:34:27,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:34:27,141 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:34:27,141 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:34:27,142 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:34:27,142 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:34:27,142 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:34:27,142 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:34:27,142 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:34:27,142 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:34:27,143 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:34:27,143 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:34:27,143 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:34:27,143 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:34:27,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:34:27,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:34:27,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:34:27,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:34:27,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:34:27,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:34:27,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:34:27,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:34:27,145 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:34:27,146 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:34:27,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:34:27,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:34:27,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:34:27,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:34:27,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:34:27,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:34:27,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:34:27,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:34:27,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:34:27,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:34:27,148 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:34:27,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:34:27,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:34:27,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:34:27,148 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:34:27,149 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_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1607371fd277a0caff8230eb2b5f9f1019931ed9 [2020-11-28 07:34:27,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:34:27,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:34:27,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:34:27,436 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:34:27,437 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:34:27,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i [2020-11-28 07:34:27,523 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/bin/utaipan/data/055e125cb/86411791ab154d51960a65b1ac0a9b0b/FLAG0753557ad [2020-11-28 07:34:27,941 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:34:27,942 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i [2020-11-28 07:34:27,949 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/bin/utaipan/data/055e125cb/86411791ab154d51960a65b1ac0a9b0b/FLAG0753557ad [2020-11-28 07:34:28,343 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/bin/utaipan/data/055e125cb/86411791ab154d51960a65b1ac0a9b0b [2020-11-28 07:34:28,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:34:28,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:34:28,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:34:28,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:34:28,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:34:28,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a39f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28, skipping insertion in model container [2020-11-28 07:34:28,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:34:28,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:34:28,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:34:28,624 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:34:28,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:34:28,664 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:34:28,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28 WrapperNode [2020-11-28 07:34:28,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:34:28,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:34:28,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:34:28,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:34:28,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:34:28,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:34:28,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:34:28,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:34:28,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... [2020-11-28 07:34:28,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:34:28,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:34:28,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:34:28,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:34:28,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/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 [2020-11-28 07:34:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:34:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:34:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:34:28,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:34:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2020-11-28 07:34:29,196 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:34:29,197 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-28 07:34:29,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:29 BoogieIcfgContainer [2020-11-28 07:34:29,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:34:29,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:34:29,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:34:29,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:34:29,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:34:28" (1/3) ... [2020-11-28 07:34:29,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720da88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:34:29, skipping insertion in model container [2020-11-28 07:34:29,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:28" (2/3) ... [2020-11-28 07:34:29,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720da88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:34:29, skipping insertion in model container [2020-11-28 07:34:29,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:29" (3/3) ... [2020-11-28 07:34:29,208 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound2.i [2020-11-28 07:34:29,229 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:34:29,232 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 07:34:29,242 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 07:34:29,265 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:34:29,266 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:34:29,266 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:34:29,266 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:34:29,266 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:34:29,267 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:34:29,267 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:34:29,267 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:34:29,281 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-28 07:34:29,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:34:29,286 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:29,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:29,287 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:29,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:29,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1336728302, now seen corresponding path program 1 times [2020-11-28 07:34:29,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:29,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384839268] [2020-11-28 07:34:29,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:29,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384839268] [2020-11-28 07:34:29,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:29,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:34:29,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289526366] [2020-11-28 07:34:29,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:34:29,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:29,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:34:29,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:34:29,440 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-28 07:34:29,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:29,456 INFO L93 Difference]: Finished difference Result 32 states and 47 transitions. [2020-11-28 07:34:29,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:34:29,457 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-28 07:34:29,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:29,465 INFO L225 Difference]: With dead ends: 32 [2020-11-28 07:34:29,466 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:34:29,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:34:29,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:34:29,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 07:34:29,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:34:29,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-11-28 07:34:29,499 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 7 [2020-11-28 07:34:29,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:29,500 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-28 07:34:29,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:34:29,500 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-11-28 07:34:29,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:34:29,501 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:29,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:29,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:34:29,501 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:29,502 INFO L82 PathProgramCache]: Analyzing trace with hash -956121442, now seen corresponding path program 1 times [2020-11-28 07:34:29,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:29,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462980735] [2020-11-28 07:34:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:29,520 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:34:29,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698269806] [2020-11-28 07:34:29,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/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 [2020-11-28 07:34:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:29,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:34:29,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:34:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:29,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:34:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:29,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462980735] [2020-11-28 07:34:29,721 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:34:29,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698269806] [2020-11-28 07:34:29,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:29,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 07:34:29,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710889530] [2020-11-28 07:34:29,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:34:29,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:29,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:34:29,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:34:29,725 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 6 states. [2020-11-28 07:34:29,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:29,790 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-11-28 07:34:29,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:34:29,792 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-28 07:34:29,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:29,792 INFO L225 Difference]: With dead ends: 34 [2020-11-28 07:34:29,792 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 07:34:29,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:34:29,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 07:34:29,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-11-28 07:34:29,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 07:34:29,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-11-28 07:34:29,801 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 8 [2020-11-28 07:34:29,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:29,805 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-11-28 07:34:29,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:34:29,805 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-11-28 07:34:29,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:34:29,806 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:29,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:30,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:34:30,022 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:30,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:30,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1936052027, now seen corresponding path program 1 times [2020-11-28 07:34:30,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:30,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990711155] [2020-11-28 07:34:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:30,044 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:34:30,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657250906] [2020-11-28 07:34:30,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/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 [2020-11-28 07:34:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:30,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 07:34:30,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:34:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:30,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:34:30,223 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:34:32,313 WARN L860 $PredicateComparison]: unable to prove that (or (<= (mod c_ULTIMATE.start_main_~b~0 4294967296) (mod c_ULTIMATE.start_main_~r~0 4294967296)) (= (mod (+ (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~b~0) c_ULTIMATE.start_main_~r~0) 4294967296) (mod c_ULTIMATE.start_main_~A~0 4294967296))) is different from true [2020-11-28 07:34:32,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:32,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990711155] [2020-11-28 07:34:32,316 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:34:32,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657250906] [2020-11-28 07:34:32,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:32,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:34:32,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359794484] [2020-11-28 07:34:32,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:34:32,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:32,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:34:32,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=19, Unknown=1, NotChecked=8, Total=42 [2020-11-28 07:34:32,319 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 7 states. [2020-11-28 07:34:38,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:38,813 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-11-28 07:34:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:34:38,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-11-28 07:34:38,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:38,819 INFO L225 Difference]: With dead ends: 44 [2020-11-28 07:34:38,819 INFO L226 Difference]: Without dead ends: 33 [2020-11-28 07:34:38,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=25, Invalid=34, Unknown=1, NotChecked=12, Total=72 [2020-11-28 07:34:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-28 07:34:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-11-28 07:34:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 07:34:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-11-28 07:34:38,826 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 9 [2020-11-28 07:34:38,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:38,826 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-11-28 07:34:38,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:34:38,827 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-11-28 07:34:38,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:34:38,827 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:38,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:39,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:34:39,031 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:39,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:39,032 INFO L82 PathProgramCache]: Analyzing trace with hash 944084195, now seen corresponding path program 1 times [2020-11-28 07:34:39,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:39,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044252963] [2020-11-28 07:34:39,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:39,067 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:34:39,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483034170] [2020-11-28 07:34:39,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/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 [2020-11-28 07:34:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:39,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:34:39,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:34:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:39,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:34:39,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:39,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044252963] [2020-11-28 07:34:39,191 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:34:39,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483034170] [2020-11-28 07:34:39,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:39,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 07:34:39,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941119843] [2020-11-28 07:34:39,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:34:39,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:39,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:34:39,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:34:39,193 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-11-28 07:34:39,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:39,260 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-11-28 07:34:39,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:34:39,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-28 07:34:39,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:39,262 INFO L225 Difference]: With dead ends: 36 [2020-11-28 07:34:39,263 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:34:39,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:34:39,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:34:39,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 07:34:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:34:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-28 07:34:39,266 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2020-11-28 07:34:39,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:39,267 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-28 07:34:39,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:34:39,267 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-28 07:34:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:34:39,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:39,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:39,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:34:39,490 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:39,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:39,491 INFO L82 PathProgramCache]: Analyzing trace with hash -800736435, now seen corresponding path program 1 times [2020-11-28 07:34:39,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:39,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295371109] [2020-11-28 07:34:39,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:39,505 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:34:39,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159297072] [2020-11-28 07:34:39,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/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 [2020-11-28 07:34:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:39,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 07:34:39,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:34:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:34:39,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:34:39,710 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:34:50,280 WARN L193 SmtUtils]: Spent 8.36 s on a formula simplification that was a NOOP. DAG size: 14 [2020-11-28 07:34:52,407 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_ULTIMATE.start_main_~b~0 2))) (let ((.cse0 (mod c_ULTIMATE.start_main_~r~0 4294967296)) (.cse2 (div (+ .cse1 (- 4294967296)) 4294967296))) (or (< .cse0 (mod c_ULTIMATE.start_main_~b~0 4294967296)) (= (mod c_ULTIMATE.start_main_~A~0 4294967296) (mod (+ (* c_ULTIMATE.start_main_~q~0 .cse1) c_ULTIMATE.start_main_~r~0) 4294967296)) (<= (div (+ (* .cse0 (- 1)) .cse1 (- 1)) 4294967296) .cse2) (<= (div .cse1 4294967296) .cse2)))) is different from true [2020-11-28 07:34:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2020-11-28 07:34:52,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295371109] [2020-11-28 07:34:52,410 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:34:52,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159297072] [2020-11-28 07:34:52,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [406578875] [2020-11-28 07:34:52,430 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-11-28 07:34:52,430 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:34:52,435 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:34:52,440 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:34:52,441 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:34:52,983 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:34:53,117 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2020-11-28 07:34:53,285 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2020-11-28 07:34:53,919 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2020-11-28 07:34:54,624 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2020-11-28 07:34:55,225 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2020-11-28 07:34:55,556 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2020-11-28 07:34:55,997 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2020-11-28 07:34:56,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:34:56,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 5] total 15 [2020-11-28 07:34:56,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290285885] [2020-11-28 07:34:56,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:34:56,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:56,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:34:56,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=156, Unknown=2, NotChecked=26, Total=240 [2020-11-28 07:34:56,009 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 9 states. [2020-11-28 07:34:56,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:56,155 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-11-28 07:34:56,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:34:56,158 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-11-28 07:34:56,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:56,159 INFO L225 Difference]: With dead ends: 23 [2020-11-28 07:34:56,159 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:34:56,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=56, Invalid=156, Unknown=2, NotChecked=26, Total=240 [2020-11-28 07:34:56,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:34:56,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 07:34:56,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:34:56,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-28 07:34:56,163 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2020-11-28 07:34:56,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:56,163 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-28 07:34:56,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:34:56,164 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-28 07:34:56,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:34:56,164 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:34:56,164 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:34:56,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:34:56,374 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:34:56,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:34:56,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1386743794, now seen corresponding path program 1 times [2020-11-28 07:34:56,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:34:56,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559643124] [2020-11-28 07:34:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:34:56,387 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:34:56,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199851244] [2020-11-28 07:34:56,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:34:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:34:56,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:34:56,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:34:56,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-28 07:34:56,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:34:58,603 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (div c_ULTIMATE.start_main_~r~0 4294967296)) (.cse2 (div (+ c_ULTIMATE.start_main_~r~0 (- 4294967296)) 4294967296)) (.cse5 (= c_ULTIMATE.start_main_~q~0 0))) (let ((.cse0 (not .cse5)) (.cse1 (* (mod c_ULTIMATE.start_main_~A~0 4294967296) (- 1))) (.cse3 (<= .cse4 .cse2))) (and (or .cse0 (<= (div (+ .cse1 c_ULTIMATE.start_main_~r~0 (- 1)) 4294967296) .cse2) .cse3) (or .cse0 (<= .cse4 (div (+ .cse1 c_ULTIMATE.start_main_~r~0) 4294967296)) .cse3) (or (forall ((aux_div_ULTIMATE.start_main_~b~0_99 Int) (aux_mod_ULTIMATE.start_main_~b~0_99 Int)) (or (not (= (mod (+ (* aux_div_ULTIMATE.start_main_~b~0_99 4294967296) (* c_ULTIMATE.start_main_~r~0 (- 1)) aux_mod_ULTIMATE.start_main_~b~0_99) c_ULTIMATE.start_main_~q~0) 0)) (< aux_mod_ULTIMATE.start_main_~b~0_99 0) (<= 4294967296 aux_mod_ULTIMATE.start_main_~b~0_99) (= aux_mod_ULTIMATE.start_main_~b~0_99 (mod c_ULTIMATE.start_main_~A~0 4294967296)))) .cse5)))) is different from false [2020-11-28 07:34:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-28 07:34:58,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559643124] [2020-11-28 07:34:58,733 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:34:58,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199851244] [2020-11-28 07:34:58,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:34:58,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:34:58,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631787539] [2020-11-28 07:34:58,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:34:58,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:34:58,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:34:58,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2020-11-28 07:34:58,735 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2020-11-28 07:34:58,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:34:58,790 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-28 07:34:58,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:34:58,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 07:34:58,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:34:58,791 INFO L225 Difference]: With dead ends: 16 [2020-11-28 07:34:58,791 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:34:58,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=11, Invalid=12, Unknown=1, NotChecked=6, Total=30 [2020-11-28 07:34:58,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:34:58,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:34:58,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:34:58,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:34:58,792 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-28 07:34:58,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:34:58,793 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:34:58,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:34:58,793 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:34:58,793 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:34:58,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-28 07:34:58,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:34:59,205 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-11-28 07:34:59,228 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:34:59,228 INFO L274 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-11-28 07:34:59,228 INFO L270 CegarLoopResult]: At program point L19-1(line 40) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 1) (< (mod ULTIMATE.start_main_~r~0 4294967296) (mod ULTIMATE.start_main_~b~0 4294967296)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0) (<= 2 ~counter~0)) [2020-11-28 07:34:59,229 INFO L274 CegarLoopResult]: For program point L19-2(lines 19 22) no Hoare annotation was computed. [2020-11-28 07:34:59,229 INFO L277 CegarLoopResult]: At program point L19-3(lines 18 24) the Hoare annotation is: true [2020-11-28 07:34:59,229 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:34:59,229 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:34:59,229 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 07:34:59,229 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-28 07:34:59,229 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-28 07:34:59,229 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-28 07:34:59,229 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:34:59,229 INFO L274 CegarLoopResult]: For program point L38(lines 38 47) no Hoare annotation was computed. [2020-11-28 07:34:59,229 INFO L274 CegarLoopResult]: For program point L38-2(lines 38 47) no Hoare annotation was computed. [2020-11-28 07:34:59,229 INFO L274 CegarLoopResult]: For program point L34-1(lines 34 37) no Hoare annotation was computed. [2020-11-28 07:34:59,230 INFO L270 CegarLoopResult]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse0 (<= 0 |#t~string0.base|)) (.cse1 (<= ULTIMATE.start_main_~B~0 1)) (.cse2 (= |#NULL.base| 0)) (.cse3 (<= ~counter~0 2)) (.cse4 (<= 0 |#t~string1.base|)) (.cse5 (<= |#t~string1.offset| 0)) (.cse6 (<= 1 ULTIMATE.start_main_~B~0)) (.cse7 (<= 0 |#t~string1.offset|)) (.cse8 (= ULTIMATE.start_main_~q~0 0)) (.cse9 (= |#NULL.offset| 0)) (.cse10 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse11 (= |#t~string0.offset| 0)) (.cse12 (<= 0 |#StackHeapBarrier|))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 1) .cse6 .cse7 .cse8 .cse9 .cse10 (<= 0 ~counter~0) .cse11 .cse12) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= 1 ~counter~0) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))) [2020-11-28 07:34:59,230 INFO L274 CegarLoopResult]: For program point L43-2(lines 26 50) no Hoare annotation was computed. [2020-11-28 07:34:59,230 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-11-28 07:34:59,237 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:34:59,238 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:34:59,238 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:34:59,238 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:34:59,238 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:34:59,239 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:34:59,244 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:34:59,245 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:34:59,245 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:34:59,245 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:34:59,245 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:34:59,245 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:34:59,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:34:59 BoogieIcfgContainer [2020-11-28 07:34:59,250 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:34:59,250 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:34:59,251 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:34:59,251 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:34:59,251 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:29" (3/4) ... [2020-11-28 07:34:59,254 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:34:59,261 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-28 07:34:59,261 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:34:59,261 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:34:59,261 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:34:59,310 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_52881de4-ad35-4bae-bc4f-b6b1b5f4beb5/bin/utaipan/witness.graphml [2020-11-28 07:34:59,311 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:34:59,312 INFO L168 Benchmark]: Toolchain (without parser) took 30965.30 ms. Allocated memory is still 98.6 MB. Free memory was 66.6 MB in the beginning and 74.9 MB in the end (delta: -8.3 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:59,312 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 73.4 MB. Free memory was 35.3 MB in the beginning and 35.3 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:34:59,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.58 ms. Allocated memory is still 98.6 MB. Free memory was 66.5 MB in the beginning and 75.0 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:59,314 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.60 ms. Allocated memory is still 98.6 MB. Free memory was 75.0 MB in the beginning and 73.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:59,314 INFO L168 Benchmark]: Boogie Preprocessor took 22.56 ms. Allocated memory is still 98.6 MB. Free memory was 73.8 MB in the beginning and 72.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:34:59,315 INFO L168 Benchmark]: RCFGBuilder took 476.08 ms. Allocated memory is still 98.6 MB. Free memory was 72.3 MB in the beginning and 56.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:59,316 INFO L168 Benchmark]: TraceAbstraction took 30049.40 ms. Allocated memory is still 98.6 MB. Free memory was 55.5 MB in the beginning and 29.4 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:59,316 INFO L168 Benchmark]: Witness Printer took 60.33 ms. Allocated memory is still 98.6 MB. Free memory was 29.4 MB in the beginning and 74.9 MB in the end (delta: -45.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:34:59,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 73.4 MB. Free memory was 35.3 MB in the beginning and 35.3 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.58 ms. Allocated memory is still 98.6 MB. Free memory was 66.5 MB in the beginning and 75.0 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.60 ms. Allocated memory is still 98.6 MB. Free memory was 75.0 MB in the beginning and 73.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.56 ms. Allocated memory is still 98.6 MB. Free memory was 73.8 MB in the beginning and 72.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 476.08 ms. Allocated memory is still 98.6 MB. Free memory was 72.3 MB in the beginning and 56.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 30049.40 ms. Allocated memory is still 98.6 MB. Free memory was 55.5 MB in the beginning and 29.4 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. * Witness Printer took 60.33 ms. Allocated memory is still 98.6 MB. Free memory was 29.4 MB in the beginning and 74.9 MB in the end (delta: -45.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant [2020-11-28 07:34:59,336 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:34:59,336 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:34:59,336 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:34:59,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:34:59,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:34:59,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:34:59,345 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:34:59,345 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:34:59,345 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:34:59,346 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:34:59,346 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:34:59,346 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier Derived loop invariant: ((((((((((((((0 <= "0" && B <= 1) && #NULL == 0) && counter <= 2) && 0 <= "divbin2.c") && "divbin2.c" <= 0) && b == 1) && 1 <= B) && 0 <= "divbin2.c") && q == 0) && #NULL == 0) && A == r) && 0 <= counter) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((((((((0 <= "0" && B <= 1) && #NULL == 0) && counter <= 2) && 0 <= "divbin2.c") && "divbin2.c" <= 0) && 1 <= counter) && 1 <= B) && 0 <= "divbin2.c") && q == 0) && #NULL == 0) && A == r) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((b == 1 && r % 4294967296 < b % 4294967296) && 1 <= cond) && q == 0) && A == r) && 2 <= counter - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 29.7s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 46 SDslu, 135 SDs, 0 SdLazy, 114 SolverSat, 16 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 86 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 20.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, 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, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 114 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 66 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.5s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 110 ConstructedInterpolants, 11 QuantifiedInterpolants, 21614 SizeOfPredicates, 23 NumberOfNonLiveVariables, 300 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 20/26 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 554, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 16, TOOLS_POST_TIME[ms]: 211, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 16, TOOLS_QUANTIFIERELIM_TIME[ms]: 203, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 183, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 30, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME[ms]: 130, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 72, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 13, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME[ms]: 85, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 101, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 100, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 8, DAG_COMPRESSION_PROCESSED_NODES: 97, DAG_COMPRESSION_RETAINED_NODES: 32, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...