./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_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI --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 [2021-10-11 02:32:41,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:41,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:41,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:41,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:41,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:41,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:41,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:41,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:41,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:41,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:41,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:41,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:41,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:41,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:41,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:41,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:41,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:41,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:41,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:41,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:41,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:41,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:41,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:41,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:41,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:41,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:41,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:41,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:41,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:41,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:41,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:41,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:41,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:41,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:41,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:41,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:41,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:41,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:41,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:41,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:41,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-11 02:32:41,579 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:41,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:41,583 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:41,583 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:41,584 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:41,584 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:41,584 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:32:41,584 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:41,591 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:41,591 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:32:41,592 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:32:41,592 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:41,592 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:32:41,593 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:32:41,593 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:32:41,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:41,594 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:41,594 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:32:41,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:41,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:41,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:41,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:32:41,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:41,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:32:41,596 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:32:41,596 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:41,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:32:41,596 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:41,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:32:41,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:41,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:41,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:41,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:41,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:41,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:32:41,600 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:32:41,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:32:41,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:32:41,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:41,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:41,600 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_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 943a72d31eebdcd925e39756b65615d2a6fd2676 [2021-10-11 02:32:41,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:42,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:42,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:42,020 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:42,021 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:42,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i [2021-10-11 02:32:42,106 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/data/3d328293e/a5111d099618498c86d14478304c20b5/FLAGc903bb76a [2021-10-11 02:32:42,651 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:42,652 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i [2021-10-11 02:32:42,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/data/3d328293e/a5111d099618498c86d14478304c20b5/FLAGc903bb76a [2021-10-11 02:32:43,027 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/data/3d328293e/a5111d099618498c86d14478304c20b5 [2021-10-11 02:32:43,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:43,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:43,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:43,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:43,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:43,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:43" (1/1) ... [2021-10-11 02:32:43,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d1fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:43, skipping insertion in model container [2021-10-11 02:32:43,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:43" (1/1) ... [2021-10-11 02:32:43,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:43,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:43,304 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i[873,886] [2021-10-11 02:32:43,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:43,320 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:32:43,333 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i[873,886] [2021-10-11 02:32:43,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:43,350 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:32:43,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:43 WrapperNode [2021-10-11 02:32:43,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:43,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:43,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:32:43,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:32:43,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:43" (1/1) ... [2021-10-11 02:32:43,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:43" (1/1) ... [2021-10-11 02:32:43,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:43,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:32:43,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:32:43,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:32:43,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:43" (1/1) ... [2021-10-11 02:32:43,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:43" (1/1) ... [2021-10-11 02:32:43,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:43" (1/1) ... [2021-10-11 02:32:43,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:43" (1/1) ... [2021-10-11 02:32:43,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:43" (1/1) ... [2021-10-11 02:32:43,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:43" (1/1) ... [2021-10-11 02:32:43,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:43" (1/1) ... [2021-10-11 02:32:43,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:32:43,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:32:43,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:32:43,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:32:43,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:43" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:43,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:32:43,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:32:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:32:43,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:32:43,832 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:32:43,833 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:32:43,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:43 BoogieIcfgContainer [2021-10-11 02:32:43,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:32:43,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:32:43,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:32:43,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:32:43,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:43" (1/3) ... [2021-10-11 02:32:43,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7a27b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:43, skipping insertion in model container [2021-10-11 02:32:43,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:43" (2/3) ... [2021-10-11 02:32:43,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7a27b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:43, skipping insertion in model container [2021-10-11 02:32:43,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:43" (3/3) ... [2021-10-11 02:32:43,844 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark01_conjunctive.i [2021-10-11 02:32:43,873 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:32:43,887 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:32:43,898 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:32:43,920 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:32:43,920 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:32:43,921 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:32:43,921 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:32:43,921 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:32:43,921 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:32:43,921 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:32:43,921 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:32:43,934 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2021-10-11 02:32:43,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:32:43,938 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:43,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:32:43,939 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:32:43,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:43,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1973446, now seen corresponding path program 1 times [2021-10-11 02:32:43,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:43,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957849087] [2021-10-11 02:32:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:44,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957849087] [2021-10-11 02:32:44,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:44,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:44,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248701190] [2021-10-11 02:32:44,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:44,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:44,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:44,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:44,179 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2021-10-11 02:32:44,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:44,246 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-10-11 02:32:44,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:44,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:32:44,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:44,264 INFO L225 Difference]: With dead ends: 15 [2021-10-11 02:32:44,269 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:32:44,272 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 [2021-10-11 02:32:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:32:44,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-10-11 02:32:44,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 02:32:44,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-11 02:32:44,304 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2021-10-11 02:32:44,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:44,305 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-11 02:32:44,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-11 02:32:44,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:32:44,306 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:44,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:32:44,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:32:44,307 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:32:44,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:44,310 INFO L82 PathProgramCache]: Analyzing trace with hash 61176876, now seen corresponding path program 1 times [2021-10-11 02:32:44,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:44,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017408] [2021-10-11 02:32:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:44,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017408] [2021-10-11 02:32:44,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:44,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:44,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210460780] [2021-10-11 02:32:44,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:44,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:44,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:44,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:44,386 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2021-10-11 02:32:44,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:44,401 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-11 02:32:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:44,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:32:44,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:44,404 INFO L225 Difference]: With dead ends: 9 [2021-10-11 02:32:44,404 INFO L226 Difference]: Without dead ends: 8 [2021-10-11 02:32:44,405 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 [2021-10-11 02:32:44,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-11 02:32:44,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-11 02:32:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 02:32:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-11 02:32:44,409 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2021-10-11 02:32:44,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:44,410 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-11 02:32:44,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:44,411 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-11 02:32:44,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:32:44,411 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:44,411 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-11 02:32:44,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:32:44,412 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:32:44,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:44,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1338562834, now seen corresponding path program 1 times [2021-10-11 02:32:44,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:44,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300187101] [2021-10-11 02:32:44,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:44,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300187101] [2021-10-11 02:32:44,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754533204] [2021-10-11 02:32:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:44,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:32:44,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:44,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:44,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [50501828] [2021-10-11 02:32:44,696 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:32:44,696 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:32:44,701 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:32:44,706 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:32:44,707 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:32:45,290 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:32:45,495 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-10-11 02:32:45,789 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-10-11 02:32:45,942 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:45,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:32:45,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2021-10-11 02:32:45,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101208314] [2021-10-11 02:32:45,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:32:45,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:45,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:32:45,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:32:45,945 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2021-10-11 02:32:46,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:46,000 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2021-10-11 02:32:46,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:32:46,001 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2021-10-11 02:32:46,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:46,002 INFO L225 Difference]: With dead ends: 18 [2021-10-11 02:32:46,002 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:32:46,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:32:46,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:32:46,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 02:32:46,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 02:32:46,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-11 02:32:46,014 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2021-10-11 02:32:46,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:46,015 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-11 02:32:46,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:32:46,015 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-11 02:32:46,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:32:46,016 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:46,016 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2021-10-11 02:32:46,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:32:46,233 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:32:46,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:46,233 INFO L82 PathProgramCache]: Analyzing trace with hash -2085963066, now seen corresponding path program 2 times [2021-10-11 02:32:46,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:46,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186277015] [2021-10-11 02:32:46,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:46,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186277015] [2021-10-11 02:32:46,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424930484] [2021-10-11 02:32:46,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:46,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-11 02:32:46,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:32:46,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:32:46,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:46,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:46,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1987944622] [2021-10-11 02:32:46,573 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:32:46,573 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:32:46,574 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:32:46,574 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:32:46,574 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:32:46,757 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:32:46,957 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-10-11 02:32:47,293 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-10-11 02:32:47,477 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:47,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:32:47,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2021-10-11 02:32:47,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146042673] [2021-10-11 02:32:47,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-10-11 02:32:47,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:47,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-11 02:32:47,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-10-11 02:32:47,479 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 17 states. [2021-10-11 02:32:47,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:47,597 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2021-10-11 02:32:47,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 02:32:47,598 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2021-10-11 02:32:47,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:47,598 INFO L225 Difference]: With dead ends: 36 [2021-10-11 02:32:47,598 INFO L226 Difference]: Without dead ends: 35 [2021-10-11 02:32:47,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2021-10-11 02:32:47,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-11 02:32:47,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-11 02:32:47,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:32:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-10-11 02:32:47,604 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 16 [2021-10-11 02:32:47,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:47,605 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-10-11 02:32:47,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-10-11 02:32:47,605 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-10-11 02:32:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-11 02:32:47,606 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:47,606 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1] [2021-10-11 02:32:47,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:47,825 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:32:47,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:47,826 INFO L82 PathProgramCache]: Analyzing trace with hash -2045032506, now seen corresponding path program 3 times [2021-10-11 02:32:47,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:47,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846661283] [2021-10-11 02:32:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:47,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846661283] [2021-10-11 02:32:47,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745460357] [2021-10-11 02:32:47,995 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:48,046 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 02:32:48,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:32:48,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-11 02:32:48,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:48,370 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:48,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:48,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [261759206] [2021-10-11 02:32:48,712 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:32:48,713 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:32:48,713 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:32:48,713 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:32:48,714 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:32:48,909 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:32:49,412 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-10-11 02:32:49,554 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:49,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:32:49,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2021-10-11 02:32:49,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893270156] [2021-10-11 02:32:49,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-10-11 02:32:49,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:49,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-11 02:32:49,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=1016, Unknown=0, NotChecked=0, Total=1560 [2021-10-11 02:32:49,557 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 35 states. [2021-10-11 02:32:49,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:49,716 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2021-10-11 02:32:49,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-11 02:32:49,716 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 34 [2021-10-11 02:32:49,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:49,718 INFO L225 Difference]: With dead ends: 72 [2021-10-11 02:32:49,718 INFO L226 Difference]: Without dead ends: 71 [2021-10-11 02:32:49,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=579, Invalid=1061, Unknown=0, NotChecked=0, Total=1640 [2021-10-11 02:32:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-11 02:32:49,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-10-11 02:32:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-10-11 02:32:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2021-10-11 02:32:49,730 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 34 [2021-10-11 02:32:49,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:49,730 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2021-10-11 02:32:49,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-10-11 02:32:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2021-10-11 02:32:49,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-11 02:32:49,733 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:49,733 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1] [2021-10-11 02:32:49,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-11 02:32:49,949 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:32:49,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:49,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1638882874, now seen corresponding path program 4 times [2021-10-11 02:32:49,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:49,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868473500] [2021-10-11 02:32:49,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:50,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868473500] [2021-10-11 02:32:50,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237644054] [2021-10-11 02:32:50,540 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:50,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-11 02:32:50,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:51,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:52,364 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:52,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1646262047] [2021-10-11 02:32:52,366 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:32:52,367 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:32:52,367 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:32:52,367 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:32:52,368 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:32:52,511 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:32:53,054 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-10-11 02:32:53,198 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:53,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:32:53,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2021-10-11 02:32:53,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83542984] [2021-10-11 02:32:53,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-10-11 02:32:53,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:53,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-10-11 02:32:53,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2104, Invalid=3596, Unknown=0, NotChecked=0, Total=5700 [2021-10-11 02:32:53,205 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 71 states. [2021-10-11 02:32:53,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:53,446 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2021-10-11 02:32:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-11 02:32:53,446 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 70 [2021-10-11 02:32:53,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:53,450 INFO L225 Difference]: With dead ends: 96 [2021-10-11 02:32:53,451 INFO L226 Difference]: Without dead ends: 95 [2021-10-11 02:32:53,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3172 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2175, Invalid=3677, Unknown=0, NotChecked=0, Total=5852 [2021-10-11 02:32:53,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-11 02:32:53,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-10-11 02:32:53,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-10-11 02:32:53,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2021-10-11 02:32:53,474 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 70 [2021-10-11 02:32:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:53,476 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2021-10-11 02:32:53,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2021-10-11 02:32:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2021-10-11 02:32:53,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-11 02:32:53,480 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:53,481 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 1, 1, 1] [2021-10-11 02:32:53,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:53,709 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:32:53,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:53,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1284645434, now seen corresponding path program 5 times [2021-10-11 02:32:53,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:53,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040102837] [2021-10-11 02:32:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:32:53,790 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:32:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:32:53,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:32:53,864 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:32:53,864 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:32:53,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-10-11 02:32:53,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:53 BoogieIcfgContainer [2021-10-11 02:32:53,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:32:53,921 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:32:53,921 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:32:53,921 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:32:53,922 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:43" (3/4) ... [2021-10-11 02:32:53,924 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:32:54,008 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_311dad84-1340-4fcc-8cd4-20b479b7a20a/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:32:54,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:32:54,009 INFO L168 Benchmark]: Toolchain (without parser) took 10975.87 ms. Allocated memory was 98.6 MB in the beginning and 237.0 MB in the end (delta: 138.4 MB). Free memory was 59.8 MB in the beginning and 85.9 MB in the end (delta: -26.1 MB). Peak memory consumption was 111.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:54,010 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory was 76.0 MB in the beginning and 75.9 MB in the end (delta: 55.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:54,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.50 ms. Allocated memory is still 98.6 MB. Free memory was 59.5 MB in the beginning and 75.7 MB in the end (delta: -16.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:54,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.48 ms. Allocated memory is still 98.6 MB. Free memory was 75.7 MB in the beginning and 74.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:54,015 INFO L168 Benchmark]: Boogie Preprocessor took 33.59 ms. Allocated memory is still 98.6 MB. Free memory was 74.2 MB in the beginning and 73.2 MB in the end (delta: 981.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:54,015 INFO L168 Benchmark]: RCFGBuilder took 406.12 ms. Allocated memory is still 98.6 MB. Free memory was 73.2 MB in the beginning and 58.3 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:54,016 INFO L168 Benchmark]: TraceAbstraction took 10083.98 ms. Allocated memory was 98.6 MB in the beginning and 237.0 MB in the end (delta: 138.4 MB). Free memory was 57.8 MB in the beginning and 91.1 MB in the end (delta: -33.3 MB). Peak memory consumption was 105.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:54,016 INFO L168 Benchmark]: Witness Printer took 87.27 ms. Allocated memory is still 237.0 MB. Free memory was 91.1 MB in the beginning and 85.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:54,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory was 76.0 MB in the beginning and 75.9 MB in the end (delta: 55.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.50 ms. Allocated memory is still 98.6 MB. Free memory was 59.5 MB in the beginning and 75.7 MB in the end (delta: -16.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.48 ms. Allocated memory is still 98.6 MB. Free memory was 75.7 MB in the beginning and 74.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.59 ms. Allocated memory is still 98.6 MB. Free memory was 74.2 MB in the beginning and 73.2 MB in the end (delta: 981.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 406.12 ms. Allocated memory is still 98.6 MB. Free memory was 73.2 MB in the beginning and 58.3 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10083.98 ms. Allocated memory was 98.6 MB in the beginning and 237.0 MB in the end (delta: 138.4 MB). Free memory was 57.8 MB in the beginning and 91.1 MB in the end (delta: -33.3 MB). Peak memory consumption was 105.4 MB. Max. memory is 16.1 GB. * Witness Printer took 87.27 ms. Allocated memory is still 237.0 MB. Free memory was 91.1 MB in the beginning and 85.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(x==1 && y==1)) [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x [L23] COND TRUE __VERIFIER_nondet_bool() [L24] x+y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.9s, OverallIterations: 7, TraceHistogramMax: 31, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 96 SDslu, 97 SDs, 0 SdLazy, 228 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 426 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4141 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s 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...