./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_password_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_password_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3cb77685c99da394e56759788276300560cc521e5b9b98850714a1baff20c383 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:26:45,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:26:45,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:26:45,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:26:45,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:26:45,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:26:45,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:26:45,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:26:45,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:26:45,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:26:45,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:26:45,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:26:45,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:26:45,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:26:45,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:26:45,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:26:45,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:26:45,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:26:45,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:26:45,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:26:45,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:26:45,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:26:45,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:26:45,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:26:45,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:26:45,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:26:45,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:26:45,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:26:45,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:26:45,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:26:45,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:26:45,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:26:45,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:26:45,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:26:45,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:26:45,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:26:45,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:26:45,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:26:45,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:26:45,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:26:45,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:26:45,637 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:26:45,667 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:26:45,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:26:45,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:26:45,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:26:45,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:26:45,670 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:26:45,670 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:26:45,670 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:26:45,671 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:26:45,671 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:26:45,671 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:26:45,671 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:26:45,672 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:26:45,672 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:26:45,672 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:26:45,673 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:26:45,673 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:26:45,673 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:26:45,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:26:45,675 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:26:45,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:26:45,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:26:45,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:26:45,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:26:45,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:26:45,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:26:45,677 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:26:45,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:26:45,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:26:45,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:26:45,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:26:45,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:26:45,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:26:45,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:26:45,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:26:45,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:26:45,680 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:26:45,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:26:45,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:26:45,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:26:45,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:26:45,681 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_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3cb77685c99da394e56759788276300560cc521e5b9b98850714a1baff20c383 [2021-11-23 03:26:46,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:26:46,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:26:46,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:26:46,049 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:26:46,052 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:26:46,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/array-examples/standard_password_ground.i [2021-11-23 03:26:46,143 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/data/f6f99bcdd/88265d8008f640c6a840fd86ba4d7849/FLAG8cd281e9c [2021-11-23 03:26:46,669 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:26:46,669 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/sv-benchmarks/c/array-examples/standard_password_ground.i [2021-11-23 03:26:46,677 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/data/f6f99bcdd/88265d8008f640c6a840fd86ba4d7849/FLAG8cd281e9c [2021-11-23 03:26:47,053 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/data/f6f99bcdd/88265d8008f640c6a840fd86ba4d7849 [2021-11-23 03:26:47,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:26:47,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:26:47,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:26:47,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:26:47,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:26:47,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:26:47" (1/1) ... [2021-11-23 03:26:47,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5741c4ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:47, skipping insertion in model container [2021-11-23 03:26:47,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:26:47" (1/1) ... [2021-11-23 03:26:47,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:26:47,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:26:47,348 WARN L230 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_51f177a6-e310-4393-9c13-37cc73423f7f/sv-benchmarks/c/array-examples/standard_password_ground.i[817,830] [2021-11-23 03:26:47,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:26:47,393 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:26:47,411 WARN L230 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_51f177a6-e310-4393-9c13-37cc73423f7f/sv-benchmarks/c/array-examples/standard_password_ground.i[817,830] [2021-11-23 03:26:47,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:26:47,458 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:26:47,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:47 WrapperNode [2021-11-23 03:26:47,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:26:47,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:26:47,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:26:47,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:26:47,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:47" (1/1) ... [2021-11-23 03:26:47,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:47" (1/1) ... [2021-11-23 03:26:47,513 INFO L137 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2021-11-23 03:26:47,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:26:47,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:26:47,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:26:47,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:26:47,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:47" (1/1) ... [2021-11-23 03:26:47,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:47" (1/1) ... [2021-11-23 03:26:47,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:47" (1/1) ... [2021-11-23 03:26:47,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:47" (1/1) ... [2021-11-23 03:26:47,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:47" (1/1) ... [2021-11-23 03:26:47,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:47" (1/1) ... [2021-11-23 03:26:47,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:47" (1/1) ... [2021-11-23 03:26:47,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:26:47,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:26:47,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:26:47,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:26:47,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:47" (1/1) ... [2021-11-23 03:26:47,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:26:47,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:26:47,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:26:47,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:26:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:26:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:26:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:26:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:26:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:26:47,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:26:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:26:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:26:47,753 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:26:47,754 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:26:47,921 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:26:47,960 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:26:47,961 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 03:26:47,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:26:47 BoogieIcfgContainer [2021-11-23 03:26:47,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:26:47,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:26:47,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:26:47,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:26:47,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:26:47" (1/3) ... [2021-11-23 03:26:47,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31806a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:26:47, skipping insertion in model container [2021-11-23 03:26:47,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:26:47" (2/3) ... [2021-11-23 03:26:47,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31806a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:26:47, skipping insertion in model container [2021-11-23 03:26:47,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:26:47" (3/3) ... [2021-11-23 03:26:47,975 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_password_ground.i [2021-11-23 03:26:47,982 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:26:47,982 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:26:48,057 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:26:48,066 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:26:48,066 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:26:48,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:48,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 03:26:48,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:26:48,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:26:48,091 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:26:48,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:26:48,097 INFO L85 PathProgramCache]: Analyzing trace with hash 833681199, now seen corresponding path program 1 times [2021-11-23 03:26:48,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:26:48,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822995287] [2021-11-23 03:26:48,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:26:48,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:26:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:26:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:26:48,283 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:26:48,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822995287] [2021-11-23 03:26:48,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822995287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:26:48,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:26:48,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:26:48,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250280371] [2021-11-23 03:26:48,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:26:48,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:26:48,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:26:48,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:26:48,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:26:48,328 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:48,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:26:48,377 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2021-11-23 03:26:48,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:26:48,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-23 03:26:48,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:26:48,391 INFO L225 Difference]: With dead ends: 22 [2021-11-23 03:26:48,391 INFO L226 Difference]: Without dead ends: 11 [2021-11-23 03:26:48,395 INFO L932 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 [2021-11-23 03:26:48,400 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:26:48,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:26:48,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-23 03:26:48,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-23 03:26:48,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:48,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-11-23 03:26:48,459 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2021-11-23 03:26:48,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:26:48,460 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-11-23 03:26:48,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:48,460 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-11-23 03:26:48,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 03:26:48,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:26:48,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:26:48,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:26:48,462 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:26:48,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:26:48,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1075473288, now seen corresponding path program 1 times [2021-11-23 03:26:48,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:26:48,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344828208] [2021-11-23 03:26:48,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:26:48,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:26:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:26:48,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:26:48,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:26:48,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344828208] [2021-11-23 03:26:48,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344828208] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:26:48,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648356545] [2021-11-23 03:26:48,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:26:48,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:26:48,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:26:48,621 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:26:48,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:26:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:26:48,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:26:48,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:26:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:26:48,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:26:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:26:48,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648356545] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:26:48,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [651713395] [2021-11-23 03:26:48,934 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-23 03:26:48,938 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:26:48,949 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:26:48,957 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:26:48,958 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:26:49,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:49,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:49,175 INFO L354 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2021-11-23 03:26:49,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2021-11-23 03:26:49,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:49,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:49,261 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-23 03:26:49,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2021-11-23 03:26:49,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:49,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:49,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2021-11-23 03:26:49,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:49,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:49,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:49,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:49,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:49,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:49,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:26:49,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:49,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:26:49,612 INFO L354 Elim1Store]: treesize reduction 142, result has 12.3 percent of original size [2021-11-23 03:26:49,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 330 treesize of output 298 [2021-11-23 03:26:49,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:26:49,759 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-23 03:26:49,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 45 [2021-11-23 03:26:49,929 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:26:50,353 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '119#(and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~result~0#1| 1) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#guess~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#guess~0#1.base|) (+ (* |ULTIMATE.start_main_~x~0#1| 4) |ULTIMATE.start_main_~#guess~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#guess~0#1.base|) (= |ULTIMATE.start_main_~#password~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#password~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#password~0#1.base|) (+ |ULTIMATE.start_main_~#password~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem8#1|) (= (ite (= |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.base| 0))' at error location [2021-11-23 03:26:50,353 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:26:50,353 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:26:50,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-23 03:26:50,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015890329] [2021-11-23 03:26:50,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:26:50,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:26:50,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:26:50,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:26:50,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:26:50,358 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:50,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:26:50,405 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2021-11-23 03:26:50,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:26:50,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 03:26:50,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:26:50,406 INFO L225 Difference]: With dead ends: 25 [2021-11-23 03:26:50,407 INFO L226 Difference]: Without dead ends: 17 [2021-11-23 03:26:50,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:26:50,409 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:26:50,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:26:50,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-23 03:26:50,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-23 03:26:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-11-23 03:26:50,416 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 9 [2021-11-23 03:26:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:26:50,417 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-23 03:26:50,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-11-23 03:26:50,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:26:50,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:26:50,418 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:26:50,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:26:50,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:26:50,636 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:26:50,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:26:50,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1110552687, now seen corresponding path program 2 times [2021-11-23 03:26:50,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:26:50,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289140513] [2021-11-23 03:26:50,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:26:50,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:26:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:26:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 03:26:50,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:26:50,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289140513] [2021-11-23 03:26:50,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289140513] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:26:50,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453514835] [2021-11-23 03:26:50,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:26:50,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:26:50,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:26:50,830 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:26:50,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:26:50,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-23 03:26:50,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:26:50,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:26:50,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:26:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 03:26:50,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:26:51,077 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 03:26:51,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453514835] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:26:51,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [691386318] [2021-11-23 03:26:51,083 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-23 03:26:51,083 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:26:51,084 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:26:51,085 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:26:51,085 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:26:51,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:51,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:51,174 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-23 03:26:51,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2021-11-23 03:26:51,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:51,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:51,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2021-11-23 03:26:51,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:51,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:51,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2021-11-23 03:26:51,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:51,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:51,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:51,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:51,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:51,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:51,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:26:51,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:51,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:26:51,474 INFO L354 Elim1Store]: treesize reduction 142, result has 12.3 percent of original size [2021-11-23 03:26:51,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 330 treesize of output 298 [2021-11-23 03:26:51,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:26:51,599 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-23 03:26:51,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 45 [2021-11-23 03:26:51,749 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:26:52,082 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '289#(and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#guess~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#guess~0#1.base|) (+ (* |ULTIMATE.start_main_~x~0#1| 4) |ULTIMATE.start_main_~#guess~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#guess~0#1.base|) (= |ULTIMATE.start_main_~#password~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~result~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 0) (not (= |ULTIMATE.start_main_~result~0#1| 0)) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#password~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#password~0#1.base|) (+ |ULTIMATE.start_main_~#password~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem8#1|) (= (ite (= |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.base| 0))' at error location [2021-11-23 03:26:52,082 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:26:52,082 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:26:52,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-11-23 03:26:52,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838332000] [2021-11-23 03:26:52,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:26:52,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:26:52,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:26:52,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:26:52,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:26:52,085 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:52,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:26:52,187 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2021-11-23 03:26:52,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:26:52,188 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 03:26:52,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:26:52,190 INFO L225 Difference]: With dead ends: 40 [2021-11-23 03:26:52,191 INFO L226 Difference]: Without dead ends: 29 [2021-11-23 03:26:52,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:26:52,201 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:26:52,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:26:52,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-23 03:26:52,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-23 03:26:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-11-23 03:26:52,220 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 15 [2021-11-23 03:26:52,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:26:52,221 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-11-23 03:26:52,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-11-23 03:26:52,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:26:52,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:26:52,224 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:26:52,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:26:52,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:26:52,440 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:26:52,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:26:52,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1690323535, now seen corresponding path program 3 times [2021-11-23 03:26:52,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:26:52,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810232171] [2021-11-23 03:26:52,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:26:52,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:26:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:26:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-23 03:26:52,684 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:26:52,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810232171] [2021-11-23 03:26:52,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810232171] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:26:52,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632265091] [2021-11-23 03:26:52,685 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 03:26:52,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:26:52,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:26:52,687 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:26:52,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:26:52,777 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 03:26:52,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:26:52,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 03:26:52,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:26:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-23 03:26:52,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:26:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-23 03:26:53,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632265091] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:26:53,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1591833877] [2021-11-23 03:26:53,137 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-23 03:26:53,138 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:26:53,138 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:26:53,139 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:26:53,139 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:26:53,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:53,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:53,207 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-23 03:26:53,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2021-11-23 03:26:53,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:53,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:53,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2021-11-23 03:26:53,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:53,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:53,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2021-11-23 03:26:53,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:53,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:53,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:26:53,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:26:53,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:26:53,458 INFO L354 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2021-11-23 03:26:53,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 310 treesize of output 300 [2021-11-23 03:26:53,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:26:53,894 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-23 03:26:53,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 45 [2021-11-23 03:26:54,004 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:26:54,318 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '597#(and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#guess~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#guess~0#1.base|) (+ (* |ULTIMATE.start_main_~x~0#1| 4) |ULTIMATE.start_main_~#guess~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#guess~0#1.base|) (= |ULTIMATE.start_main_~#password~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~result~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 0) (not (= |ULTIMATE.start_main_~result~0#1| 0)) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#password~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#password~0#1.base|) (+ |ULTIMATE.start_main_~#password~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem8#1|) (= (ite (= |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.base| 0))' at error location [2021-11-23 03:26:54,318 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:26:54,318 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:26:54,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2021-11-23 03:26:54,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873430844] [2021-11-23 03:26:54,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:26:54,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 03:26:54,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:26:54,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 03:26:54,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=607, Unknown=0, NotChecked=0, Total=930 [2021-11-23 03:26:54,321 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 25 states, 25 states have (on average 1.28) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:54,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:26:54,495 INFO L93 Difference]: Finished difference Result 70 states and 97 transitions. [2021-11-23 03:26:54,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 03:26:54,495 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.28) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-23 03:26:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:26:54,497 INFO L225 Difference]: With dead ends: 70 [2021-11-23 03:26:54,497 INFO L226 Difference]: Without dead ends: 53 [2021-11-23 03:26:54,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=323, Invalid=607, Unknown=0, NotChecked=0, Total=930 [2021-11-23 03:26:54,499 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:26:54,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:26:54,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-23 03:26:54,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-23 03:26:54,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2021-11-23 03:26:54,509 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 27 [2021-11-23 03:26:54,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:26:54,510 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2021-11-23 03:26:54,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.28) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:54,510 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2021-11-23 03:26:54,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 03:26:54,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:26:54,513 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:26:54,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:26:54,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:26:54,728 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:26:54,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:26:54,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1038362127, now seen corresponding path program 4 times [2021-11-23 03:26:54,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:26:54,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715298472] [2021-11-23 03:26:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:26:54,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:26:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:26:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-23 03:26:55,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:26:55,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715298472] [2021-11-23 03:26:55,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715298472] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:26:55,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910391726] [2021-11-23 03:26:55,366 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 03:26:55,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:26:55,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:26:55,376 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:26:55,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:26:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:26:55,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 03:26:55,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:26:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-23 03:26:55,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:26:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-23 03:26:56,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910391726] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:26:56,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [581418501] [2021-11-23 03:26:56,642 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-23 03:26:56,642 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:26:56,642 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:26:56,642 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:26:56,643 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:26:56,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:56,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:56,720 INFO L354 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2021-11-23 03:26:56,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2021-11-23 03:26:56,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:56,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:56,781 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-23 03:26:56,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2021-11-23 03:26:56,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:56,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:56,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2021-11-23 03:26:56,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:56,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:56,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:56,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:56,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:56,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:56,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:26:56,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:26:56,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:26:56,985 INFO L354 Elim1Store]: treesize reduction 142, result has 12.3 percent of original size [2021-11-23 03:26:56,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 330 treesize of output 298 [2021-11-23 03:26:57,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:26:57,083 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-23 03:26:57,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 45 [2021-11-23 03:26:57,219 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:26:57,572 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1181#(and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#guess~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#guess~0#1.base|) (+ (* |ULTIMATE.start_main_~x~0#1| 4) |ULTIMATE.start_main_~#guess~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#guess~0#1.base|) (= |ULTIMATE.start_main_~#password~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~result~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 0) (not (= |ULTIMATE.start_main_~result~0#1| 0)) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#password~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#password~0#1.base|) (+ |ULTIMATE.start_main_~#password~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem8#1|) (= (ite (= |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.base| 0))' at error location [2021-11-23 03:26:57,572 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:26:57,572 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:26:57,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2021-11-23 03:26:57,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661224882] [2021-11-23 03:26:57,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:26:57,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-23 03:26:57,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:26:57,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-23 03:26:57,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1199, Invalid=1771, Unknown=0, NotChecked=0, Total=2970 [2021-11-23 03:26:57,578 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 49 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:58,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:26:58,040 INFO L93 Difference]: Finished difference Result 130 states and 181 transitions. [2021-11-23 03:26:58,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-23 03:26:58,041 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-23 03:26:58,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:26:58,043 INFO L225 Difference]: With dead ends: 130 [2021-11-23 03:26:58,043 INFO L226 Difference]: Without dead ends: 101 [2021-11-23 03:26:58,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1199, Invalid=1771, Unknown=0, NotChecked=0, Total=2970 [2021-11-23 03:26:58,047 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:26:58,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:26:58,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-23 03:26:58,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-11-23 03:26:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2021-11-23 03:26:58,063 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 51 [2021-11-23 03:26:58,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:26:58,064 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2021-11-23 03:26:58,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:26:58,064 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2021-11-23 03:26:58,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-23 03:26:58,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:26:58,071 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:26:58,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:26:58,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:26:58,288 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:26:58,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:26:58,288 INFO L85 PathProgramCache]: Analyzing trace with hash -428966513, now seen corresponding path program 5 times [2021-11-23 03:26:58,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:26:58,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545625351] [2021-11-23 03:26:58,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:26:58,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:26:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:26:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2021-11-23 03:26:59,586 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:26:59,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545625351] [2021-11-23 03:26:59,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545625351] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:26:59,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458402566] [2021-11-23 03:26:59,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:26:59,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:26:59,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:26:59,588 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:26:59,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 03:31:21,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2021-11-23 03:31:21,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:31:21,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-23 03:31:21,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:31:22,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2021-11-23 03:31:22,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:31:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2021-11-23 03:31:25,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458402566] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:31:25,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [548763304] [2021-11-23 03:31:25,228 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-23 03:31:25,228 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:31:25,229 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:31:25,229 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:31:25,229 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:31:25,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:25,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:25,310 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-23 03:31:25,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2021-11-23 03:31:25,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:25,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:25,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2021-11-23 03:31:25,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:25,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:25,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2021-11-23 03:31:25,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:25,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:25,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:25,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:25,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:25,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:25,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:31:25,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:25,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:31:25,487 INFO L354 Elim1Store]: treesize reduction 142, result has 12.3 percent of original size [2021-11-23 03:31:25,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 330 treesize of output 298 [2021-11-23 03:31:25,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:31:25,567 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-23 03:31:25,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 45 [2021-11-23 03:31:25,669 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:31:26,124 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2317#(and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~result~0#1| 1) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#guess~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#guess~0#1.base|) (+ (* |ULTIMATE.start_main_~x~0#1| 4) |ULTIMATE.start_main_~#guess~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#guess~0#1.base|) (= |ULTIMATE.start_main_~#password~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#password~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#password~0#1.base|) (+ |ULTIMATE.start_main_~#password~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem8#1|) (= (ite (= |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.base| 0))' at error location [2021-11-23 03:31:26,124 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:31:26,125 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:31:26,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 49, 49] total 97 [2021-11-23 03:31:26,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308535410] [2021-11-23 03:31:26,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:31:26,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-11-23 03:31:26,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:31:26,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-11-23 03:31:26,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4682, Invalid=5824, Unknown=0, NotChecked=0, Total=10506 [2021-11-23 03:31:26,136 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 97 states, 97 states have (on average 1.5670103092783505) internal successors, (152), 97 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:31:27,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:31:27,170 INFO L93 Difference]: Finished difference Result 250 states and 349 transitions. [2021-11-23 03:31:27,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-23 03:31:27,171 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.5670103092783505) internal successors, (152), 97 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-23 03:31:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:31:27,178 INFO L225 Difference]: With dead ends: 250 [2021-11-23 03:31:27,178 INFO L226 Difference]: Without dead ends: 197 [2021-11-23 03:31:27,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4682, Invalid=5824, Unknown=0, NotChecked=0, Total=10506 [2021-11-23 03:31:27,184 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:31:27,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:31:27,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-23 03:31:27,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2021-11-23 03:31:27,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.0153061224489797) internal successors, (199), 196 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:31:27,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 199 transitions. [2021-11-23 03:31:27,224 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 199 transitions. Word has length 99 [2021-11-23 03:31:27,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:31:27,225 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 199 transitions. [2021-11-23 03:31:27,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.5670103092783505) internal successors, (152), 97 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:31:27,226 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 199 transitions. [2021-11-23 03:31:27,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-23 03:31:27,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:27,233 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:31:27,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-23 03:31:27,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 03:31:27,435 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:27,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:27,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2110631055, now seen corresponding path program 6 times [2021-11-23 03:31:27,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:27,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759057975] [2021-11-23 03:31:27,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:27,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:31,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2021-11-23 03:31:31,171 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:31:31,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759057975] [2021-11-23 03:31:31,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759057975] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:31:31,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645344330] [2021-11-23 03:31:31,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 03:31:31,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:31,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:31,176 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:31:31,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 03:31:31,509 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 03:31:31,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:31:31,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 1186 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-23 03:31:31,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:31:32,020 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2021-11-23 03:31:32,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:31:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2021-11-23 03:31:42,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645344330] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:31:42,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [636772358] [2021-11-23 03:31:42,375 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-23 03:31:42,375 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:31:42,376 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:31:42,376 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:31:42,376 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:31:42,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:42,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:42,454 INFO L354 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2021-11-23 03:31:42,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2021-11-23 03:31:42,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:42,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:42,507 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-23 03:31:42,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2021-11-23 03:31:42,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:42,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:42,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2021-11-23 03:31:42,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:42,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:42,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:42,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:42,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:42,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:42,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:31:42,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:42,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:31:42,678 INFO L354 Elim1Store]: treesize reduction 142, result has 12.3 percent of original size [2021-11-23 03:31:42,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 330 treesize of output 298 [2021-11-23 03:31:42,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:31:42,764 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-23 03:31:42,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 45 [2021-11-23 03:31:42,878 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:31:43,584 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4557#(and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~result~0#1| 1) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#guess~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#guess~0#1.base|) (+ (* |ULTIMATE.start_main_~x~0#1| 4) |ULTIMATE.start_main_~#guess~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#guess~0#1.base|) (= |ULTIMATE.start_main_~#password~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#password~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#password~0#1.base|) (+ |ULTIMATE.start_main_~#password~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem8#1|) (= (ite (= |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.base| 0))' at error location [2021-11-23 03:31:43,585 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:31:43,585 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:31:43,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 192 [2021-11-23 03:31:43,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190362647] [2021-11-23 03:31:43,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:31:43,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2021-11-23 03:31:43,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:31:43,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2021-11-23 03:31:43,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18554, Invalid=20848, Unknown=0, NotChecked=0, Total=39402 [2021-11-23 03:31:43,603 INFO L87 Difference]: Start difference. First operand 197 states and 199 transitions. Second operand has 193 states, 193 states have (on average 1.0362694300518134) internal successors, (200), 192 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:31:48,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:31:48,726 INFO L93 Difference]: Finished difference Result 490 states and 685 transitions. [2021-11-23 03:31:48,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-23 03:31:48,727 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 1.0362694300518134) internal successors, (200), 192 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-11-23 03:31:48,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:31:48,731 INFO L225 Difference]: With dead ends: 490 [2021-11-23 03:31:48,731 INFO L226 Difference]: Without dead ends: 389 [2021-11-23 03:31:48,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2091 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=18554, Invalid=20848, Unknown=0, NotChecked=0, Total=39402 [2021-11-23 03:31:48,738 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 1154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1154 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:31:48,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1154 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 03:31:48,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-23 03:31:48,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2021-11-23 03:31:48,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.0077319587628866) internal successors, (391), 388 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:31:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 391 transitions. [2021-11-23 03:31:48,783 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 391 transitions. Word has length 195 [2021-11-23 03:31:48,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:31:48,784 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 391 transitions. [2021-11-23 03:31:48,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 1.0362694300518134) internal successors, (200), 192 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:31:48,784 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 391 transitions. [2021-11-23 03:31:48,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2021-11-23 03:31:48,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:48,798 INFO L514 BasicCegarLoop]: trace histogram [190, 190, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:31:48,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 03:31:49,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:49,012 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:49,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:49,013 INFO L85 PathProgramCache]: Analyzing trace with hash -273282417, now seen corresponding path program 7 times [2021-11-23 03:31:49,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:49,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439115413] [2021-11-23 03:31:49,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:49,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:04,620 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2021-11-23 03:32:04,620 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:32:04,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439115413] [2021-11-23 03:32:04,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439115413] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:32:04,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025914460] [2021-11-23 03:32:04,621 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 03:32:04,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:32:04,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:32:04,623 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:32:04,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 03:32:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:05,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-23 03:32:05,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:32:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2021-11-23 03:32:06,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:32:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2021-11-23 03:32:46,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025914460] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:32:46,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2133861663] [2021-11-23 03:32:46,297 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-23 03:32:46,297 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:32:46,297 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:32:46,297 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:32:46,298 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:32:46,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:46,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:46,369 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-23 03:32:46,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2021-11-23 03:32:46,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:46,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:46,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2021-11-23 03:32:46,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:46,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:46,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2021-11-23 03:32:46,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:46,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:46,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:46,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:46,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:46,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:46,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:32:46,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:46,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:32:46,511 INFO L354 Elim1Store]: treesize reduction 142, result has 12.3 percent of original size [2021-11-23 03:32:46,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 330 treesize of output 298 [2021-11-23 03:32:46,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:32:46,590 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-23 03:32:46,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 45 [2021-11-23 03:32:46,674 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:32:47,625 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9005#(and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~result~0#1| 1) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#guess~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#guess~0#1.base|) (+ (* |ULTIMATE.start_main_~x~0#1| 4) |ULTIMATE.start_main_~#guess~0#1.offset|))) (<= 0 |ULTIMATE.start_main_~#guess~0#1.base|) (= |ULTIMATE.start_main_~#password~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#password~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#password~0#1.base|) (+ |ULTIMATE.start_main_~#password~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem8#1|) (= (ite (= |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.base| 0))' at error location [2021-11-23 03:32:47,625 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:32:47,625 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:32:47,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 384 [2021-11-23 03:32:47,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124007773] [2021-11-23 03:32:47,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:32:47,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2021-11-23 03:32:47,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:32:47,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2021-11-23 03:32:47,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73946, Invalid=78544, Unknown=0, NotChecked=0, Total=152490 [2021-11-23 03:32:47,659 INFO L87 Difference]: Start difference. First operand 389 states and 391 transitions. Second operand has 385 states, 385 states have (on average 1.018181818181818) internal successors, (392), 384 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:44,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:44,714 INFO L93 Difference]: Finished difference Result 970 states and 1357 transitions. [2021-11-23 03:33:44,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-23 03:33:44,716 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 385 states have (on average 1.018181818181818) internal successors, (392), 384 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 387 [2021-11-23 03:33:44,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:44,724 INFO L225 Difference]: With dead ends: 970 [2021-11-23 03:33:44,724 INFO L226 Difference]: Without dead ends: 773 [2021-11-23 03:33:44,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1351 GetRequests, 962 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4203 ImplicationChecksByTransitivity, 54.2s TimeCoverageRelationStatistics Valid=73946, Invalid=78544, Unknown=0, NotChecked=0, Total=152490 [2021-11-23 03:33:44,734 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 2233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2233 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:44,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 3017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2233 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 03:33:44,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2021-11-23 03:33:44,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 773. [2021-11-23 03:33:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 772 states have (on average 1.0038860103626943) internal successors, (775), 772 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 775 transitions. [2021-11-23 03:33:44,786 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 775 transitions. Word has length 387 [2021-11-23 03:33:44,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:44,787 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 775 transitions. [2021-11-23 03:33:44,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 385 states have (on average 1.018181818181818) internal successors, (392), 384 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:44,789 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 775 transitions. [2021-11-23 03:33:44,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2021-11-23 03:33:44,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:44,817 INFO L514 BasicCegarLoop]: trace histogram [382, 382, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:44,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 03:33:45,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:33:45,032 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:45,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:45,033 INFO L85 PathProgramCache]: Analyzing trace with hash 808371855, now seen corresponding path program 8 times [2021-11-23 03:33:45,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:45,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489606301] [2021-11-23 03:33:45,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:45,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:38,849 INFO L134 CoverageAnalysis]: Checked inductivity of 146306 backedges. 0 proven. 73153 refuted. 0 times theorem prover too weak. 73153 trivial. 0 not checked. [2021-11-23 03:34:38,850 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:38,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489606301] [2021-11-23 03:34:38,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489606301] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:34:38,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344183972] [2021-11-23 03:34:38,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:34:38,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:34:38,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:34:38,866 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:34:38,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51f177a6-e310-4393-9c13-37cc73423f7f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process