./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/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 0.2.0-7b2dab5 [2020-12-09 07:04:06,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:04:06,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:04:06,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:04:06,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:04:06,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:04:06,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:04:06,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:04:06,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:04:06,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:04:06,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:04:06,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:04:06,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:04:06,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:04:06,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:04:06,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:04:06,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:04:06,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:04:06,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:04:06,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:04:06,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:04:06,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:04:06,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:04:06,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:04:06,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:04:06,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:04:06,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:04:06,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:04:06,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:04:06,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:04:06,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:04:06,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:04:06,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:04:06,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:04:06,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:04:06,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:04:06,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:04:06,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:04:06,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:04:06,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:04:06,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:04:06,513 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-12-09 07:04:06,530 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:04:06,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:04:06,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:04:06,531 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:04:06,531 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:04:06,531 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:04:06,531 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:04:06,531 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:04:06,531 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:04:06,531 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:04:06,531 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:04:06,532 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:04:06,532 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:04:06,532 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:04:06,532 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:04:06,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:04:06,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:04:06,533 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 07:04:06,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:04:06,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:04:06,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:04:06,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:04:06,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:04:06,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:04:06,534 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 07:04:06,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:04:06,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:04:06,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:04:06,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:04:06,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:04:06,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:04:06,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:04:06,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:04:06,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:04:06,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:04:06,535 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:04:06,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:04:06,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:04:06,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:04:06,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:04:06,536 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_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 943a72d31eebdcd925e39756b65615d2a6fd2676 [2020-12-09 07:04:06,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:04:06,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:04:06,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:04:06,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:04:06,743 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:04:06,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i [2020-12-09 07:04:06,784 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/bin/utaipan/data/64f5d658c/e771962c9fbb4679beef2fed6018b5b4/FLAG7ea96f0e6 [2020-12-09 07:04:07,151 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:04:07,151 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i [2020-12-09 07:04:07,157 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/bin/utaipan/data/64f5d658c/e771962c9fbb4679beef2fed6018b5b4/FLAG7ea96f0e6 [2020-12-09 07:04:07,166 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/bin/utaipan/data/64f5d658c/e771962c9fbb4679beef2fed6018b5b4 [2020-12-09 07:04:07,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:04:07,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:04:07,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:04:07,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:04:07,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:04:07,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:04:07" (1/1) ... [2020-12-09 07:04:07,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@453ec987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:07, skipping insertion in model container [2020-12-09 07:04:07,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:04:07" (1/1) ... [2020-12-09 07:04:07,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:04:07,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:04:07,298 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i[873,886] [2020-12-09 07:04:07,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:04:07,309 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:04:07,318 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i[873,886] [2020-12-09 07:04:07,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:04:07,332 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:04:07,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:07 WrapperNode [2020-12-09 07:04:07,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:04:07,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:04:07,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:04:07,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:04:07,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:07" (1/1) ... [2020-12-09 07:04:07,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:07" (1/1) ... [2020-12-09 07:04:07,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:04:07,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:04:07,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:04:07,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:04:07,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:07" (1/1) ... [2020-12-09 07:04:07,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:07" (1/1) ... [2020-12-09 07:04:07,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:07" (1/1) ... [2020-12-09 07:04:07,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:07" (1/1) ... [2020-12-09 07:04:07,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:07" (1/1) ... [2020-12-09 07:04:07,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:07" (1/1) ... [2020-12-09 07:04:07,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:07" (1/1) ... [2020-12-09 07:04:07,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:04:07,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:04:07,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:04:07,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:04:07,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:04:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:04:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:04:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:04:07,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:04:07,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:04:07,600 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 07:04:07,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:04:07 BoogieIcfgContainer [2020-12-09 07:04:07,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:04:07,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:04:07,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:04:07,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:04:07,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:04:07" (1/3) ... [2020-12-09 07:04:07,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ba76e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:04:07, skipping insertion in model container [2020-12-09 07:04:07,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:07" (2/3) ... [2020-12-09 07:04:07,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ba76e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:04:07, skipping insertion in model container [2020-12-09 07:04:07,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:04:07" (3/3) ... [2020-12-09 07:04:07,608 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark01_conjunctive.i [2020-12-09 07:04:07,619 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:04:07,622 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 07:04:07,630 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 07:04:07,649 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:04:07,649 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:04:07,649 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:04:07,649 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:04:07,649 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:04:07,649 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:04:07,649 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:04:07,649 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:04:07,659 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-12-09 07:04:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 07:04:07,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:07,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 07:04:07,663 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:04:07,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:07,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1973446, now seen corresponding path program 1 times [2020-12-09 07:04:07,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:07,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679282286] [2020-12-09 07:04:07,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:07,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679282286] [2020-12-09 07:04:07,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:04:07,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:04:07,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358964434] [2020-12-09 07:04:07,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:07,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:07,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:07,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:07,808 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-12-09 07:04:07,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:07,844 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-12-09 07:04:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:07,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 07:04:07,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:07,853 INFO L225 Difference]: With dead ends: 15 [2020-12-09 07:04:07,854 INFO L226 Difference]: Without dead ends: 10 [2020-12-09 07:04:07,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:07,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-09 07:04:07,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-12-09 07:04:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-09 07:04:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-12-09 07:04:07,884 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2020-12-09 07:04:07,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:07,884 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-12-09 07:04:07,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:07,884 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-12-09 07:04:07,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:04:07,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:07,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:04:07,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:04:07,885 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:04:07,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:07,886 INFO L82 PathProgramCache]: Analyzing trace with hash 61176876, now seen corresponding path program 1 times [2020-12-09 07:04:07,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:07,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46271124] [2020-12-09 07:04:07,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:07,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46271124] [2020-12-09 07:04:07,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:04:07,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:04:07,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549441301] [2020-12-09 07:04:07,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:07,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:07,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:07,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:07,923 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2020-12-09 07:04:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:07,933 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-12-09 07:04:07,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:07,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 07:04:07,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:07,934 INFO L225 Difference]: With dead ends: 9 [2020-12-09 07:04:07,934 INFO L226 Difference]: Without dead ends: 8 [2020-12-09 07:04:07,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:07,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-09 07:04:07,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-09 07:04:07,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-09 07:04:07,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-09 07:04:07,938 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2020-12-09 07:04:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:07,938 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-09 07:04:07,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-09 07:04:07,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 07:04:07,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:07,939 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-12-09 07:04:07,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 07:04:07,939 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:04:07,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:07,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1338562834, now seen corresponding path program 1 times [2020-12-09 07:04:07,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:07,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556036213] [2020-12-09 07:04:07,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:07,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556036213] [2020-12-09 07:04:07,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052289276] [2020-12-09 07:04:07,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:04:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:08,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 07:04:08,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:04:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:08,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:04:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:08,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [840323143] [2020-12-09 07:04:08,141 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-12-09 07:04:08,141 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:04:08,145 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:04:08,149 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:04:08,149 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:04:08,463 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 07:04:08,776 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-12-09 07:04:08,877 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:04:08,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:04:08,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2020-12-09 07:04:08,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442748791] [2020-12-09 07:04:08,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:04:08,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:08,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:04:08,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-12-09 07:04:08,879 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2020-12-09 07:04:08,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:08,912 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2020-12-09 07:04:08,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:04:08,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-12-09 07:04:08,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:08,913 INFO L225 Difference]: With dead ends: 18 [2020-12-09 07:04:08,913 INFO L226 Difference]: Without dead ends: 17 [2020-12-09 07:04:08,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-12-09 07:04:08,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-09 07:04:08,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-09 07:04:08,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-09 07:04:08,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-12-09 07:04:08,918 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2020-12-09 07:04:08,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:08,919 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-12-09 07:04:08,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:04:08,919 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-12-09 07:04:08,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 07:04:08,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:08,920 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2020-12-09 07:04:09,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 07:04:09,121 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:04:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:09,121 INFO L82 PathProgramCache]: Analyzing trace with hash -2085963066, now seen corresponding path program 2 times [2020-12-09 07:04:09,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:09,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320180574] [2020-12-09 07:04:09,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:09,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320180574] [2020-12-09 07:04:09,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904590504] [2020-12-09 07:04:09,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:04:09,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-09 07:04:09,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 07:04:09,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 07:04:09,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:04:09,304 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:09,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:04:09,380 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:09,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1728611519] [2020-12-09 07:04:09,381 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-12-09 07:04:09,382 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:04:09,382 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:04:09,382 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:04:09,382 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:04:09,524 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 07:04:09,863 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-12-09 07:04:09,988 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:04:09,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:04:09,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2020-12-09 07:04:09,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890603022] [2020-12-09 07:04:09,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-09 07:04:09,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:09,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-09 07:04:09,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-12-09 07:04:09,991 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 17 states. [2020-12-09 07:04:10,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:10,040 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-12-09 07:04:10,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 07:04:10,040 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2020-12-09 07:04:10,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:10,041 INFO L225 Difference]: With dead ends: 36 [2020-12-09 07:04:10,041 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 07:04:10,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2020-12-09 07:04:10,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 07:04:10,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-09 07:04:10,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 07:04:10,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-12-09 07:04:10,046 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 16 [2020-12-09 07:04:10,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:10,046 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-12-09 07:04:10,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-09 07:04:10,046 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-12-09 07:04:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-09 07:04:10,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:10,047 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1] [2020-12-09 07:04:10,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:04:10,249 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:04:10,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:10,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2045032506, now seen corresponding path program 3 times [2020-12-09 07:04:10,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:10,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729181425] [2020-12-09 07:04:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:10,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729181425] [2020-12-09 07:04:10,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876795951] [2020-12-09 07:04:10,416 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/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 [2020-12-09 07:04:10,449 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 07:04:10,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 07:04:10,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-09 07:04:10,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:04:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:10,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:04:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:10,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1338412673] [2020-12-09 07:04:10,878 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-12-09 07:04:10,878 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:04:10,878 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:04:10,878 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:04:10,878 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:04:10,990 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 07:04:11,330 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-12-09 07:04:11,434 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:04:11,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:04:11,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2020-12-09 07:04:11,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611082626] [2020-12-09 07:04:11,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-09 07:04:11,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:11,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-09 07:04:11,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=1016, Unknown=0, NotChecked=0, Total=1560 [2020-12-09 07:04:11,437 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 35 states. [2020-12-09 07:04:11,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:11,533 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-12-09 07:04:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-09 07:04:11,533 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 34 [2020-12-09 07:04:11,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:11,535 INFO L225 Difference]: With dead ends: 72 [2020-12-09 07:04:11,535 INFO L226 Difference]: Without dead ends: 71 [2020-12-09 07:04:11,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=579, Invalid=1061, Unknown=0, NotChecked=0, Total=1640 [2020-12-09 07:04:11,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-09 07:04:11,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-09 07:04:11,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-09 07:04:11,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-12-09 07:04:11,542 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 34 [2020-12-09 07:04:11,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:11,543 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-12-09 07:04:11,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-12-09 07:04:11,543 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-12-09 07:04:11,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-09 07:04:11,544 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:11,544 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1] [2020-12-09 07:04:11,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-09 07:04:11,746 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:04:11,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:11,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1638882874, now seen corresponding path program 4 times [2020-12-09 07:04:11,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:11,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119960850] [2020-12-09 07:04:11,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:12,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119960850] [2020-12-09 07:04:12,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176876198] [2020-12-09 07:04:12,105 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/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 [2020-12-09 07:04:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:12,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-09 07:04:12,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:04:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:12,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:04:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:13,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [667613085] [2020-12-09 07:04:13,264 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-12-09 07:04:13,264 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:04:13,264 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:04:13,265 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:04:13,265 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:04:13,378 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 07:04:13,750 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-12-09 07:04:13,860 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:04:13,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:04:13,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2020-12-09 07:04:13,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076911191] [2020-12-09 07:04:13,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-12-09 07:04:13,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:13,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-12-09 07:04:13,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2104, Invalid=3596, Unknown=0, NotChecked=0, Total=5700 [2020-12-09 07:04:13,865 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 71 states. [2020-12-09 07:04:13,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:13,982 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2020-12-09 07:04:13,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-09 07:04:13,983 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 70 [2020-12-09 07:04:13,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:13,984 INFO L225 Difference]: With dead ends: 96 [2020-12-09 07:04:13,984 INFO L226 Difference]: Without dead ends: 95 [2020-12-09 07:04:13,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2175, Invalid=3677, Unknown=0, NotChecked=0, Total=5852 [2020-12-09 07:04:13,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-09 07:04:13,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-12-09 07:04:13,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-09 07:04:13,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-12-09 07:04:13,993 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 70 [2020-12-09 07:04:13,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:13,993 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-12-09 07:04:13,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-12-09 07:04:13,993 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-12-09 07:04:13,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-09 07:04:13,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:13,994 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 1, 1, 1] [2020-12-09 07:04:14,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:04:14,196 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:04:14,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:14,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1284645434, now seen corresponding path program 5 times [2020-12-09 07:04:14,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:14,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892218807] [2020-12-09 07:04:14,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:04:14,282 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:04:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:04:14,335 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:04:14,353 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 07:04:14,353 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 07:04:14,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-12-09 07:04:14,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:04:14 BoogieIcfgContainer [2020-12-09 07:04:14,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:04:14,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:04:14,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:04:14,394 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:04:14,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:04:07" (3/4) ... [2020-12-09 07:04:14,395 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 07:04:14,443 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d2d0684a-3f1e-476e-bc02-9c06c3693bbd/bin/utaipan/witness.graphml [2020-12-09 07:04:14,443 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:04:14,444 INFO L168 Benchmark]: Toolchain (without parser) took 7273.93 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 74.0 MB in the beginning and 124.1 MB in the end (delta: -50.1 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2020-12-09 07:04:14,444 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 111.1 MB. Free memory was 90.5 MB in the beginning and 90.4 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:04:14,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.73 ms. Allocated memory is still 111.1 MB. Free memory was 73.8 MB in the beginning and 87.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 07:04:14,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.63 ms. Allocated memory is still 111.1 MB. Free memory was 87.5 MB in the beginning and 86.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:04:14,445 INFO L168 Benchmark]: Boogie Preprocessor took 18.52 ms. Allocated memory is still 111.1 MB. Free memory was 86.3 MB in the beginning and 85.4 MB in the end (delta: 946.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:04:14,445 INFO L168 Benchmark]: RCFGBuilder took 221.21 ms. Allocated memory is still 111.1 MB. Free memory was 85.4 MB in the beginning and 70.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 07:04:14,446 INFO L168 Benchmark]: TraceAbstraction took 6790.12 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 70.3 MB in the beginning and 129.4 MB in the end (delta: -59.1 MB). Peak memory consumption was 81.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:04:14,446 INFO L168 Benchmark]: Witness Printer took 49.86 ms. Allocated memory is still 161.5 MB. Free memory was 128.3 MB in the beginning and 124.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:04:14,447 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 111.1 MB. Free memory was 90.5 MB in the beginning and 90.4 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 161.73 ms. Allocated memory is still 111.1 MB. Free memory was 73.8 MB in the beginning and 87.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.63 ms. Allocated memory is still 111.1 MB. Free memory was 87.5 MB in the beginning and 86.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.52 ms. Allocated memory is still 111.1 MB. Free memory was 86.3 MB in the beginning and 85.4 MB in the end (delta: 946.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 221.21 ms. Allocated memory is still 111.1 MB. Free memory was 85.4 MB in the beginning and 70.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6790.12 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 70.3 MB in the beginning and 129.4 MB in the end (delta: -59.1 MB). Peak memory consumption was 81.1 MB. Max. memory is 16.1 GB. * Witness Printer took 49.86 ms. Allocated memory is still 161.5 MB. Free memory was 128.3 MB in the beginning and 124.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 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: 6.7s, OverallIterations: 7, TraceHistogramMax: 31, AutomataDifference: 0.3s, 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, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 426 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4141 ImplicationChecksByTransitivity, 3.4s 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, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 376 ConstructedInterpolants, 0 QuantifiedInterpolants, 143014 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...