./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum04-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/sum04-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9 --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 aaea6fef281249794f41087d72bdcfa92bd0b0609c0833888767b94608daa7f2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:46:45,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:46:45,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:46:45,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:46:45,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:46:45,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:46:45,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:46:45,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:46:45,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:46:45,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:46:45,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:46:45,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:46:45,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:46:45,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:46:45,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:46:45,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:46:45,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:46:45,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:46:45,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:46:45,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:46:45,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:46:45,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:46:45,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:46:45,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:46:45,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:46:45,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:46:45,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:46:45,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:46:45,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:46:45,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:46:45,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:46:45,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:46:45,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:46:45,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:46:45,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:46:45,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:46:45,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:46:45,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:46:45,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:46:45,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:46:45,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:46:45,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:46:45,659 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:46:45,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:46:45,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:46:45,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:46:45,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:46:45,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:46:45,665 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:46:45,666 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:46:45,666 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:46:45,666 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:46:45,667 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:46:45,667 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:46:45,668 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:46:45,668 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:46:45,668 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:46:45,668 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:46:45,668 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:46:45,669 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:46:45,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:46:45,670 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:46:45,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:46:45,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:46:45,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:46:45,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:46:45,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:46:45,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:46:45,672 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:46:45,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:46:45,672 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:46:45,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:46:45,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:46:45,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:46:45,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:46:45,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:46:45,674 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:46:45,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:46:45,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:46:45,675 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:46:45,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:46:45,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:46:45,675 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:46:45,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaea6fef281249794f41087d72bdcfa92bd0b0609c0833888767b94608daa7f2 [2022-11-20 20:46:45,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:46:46,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:46:46,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:46:46,035 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:46:46,036 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:46:46,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/loops/sum04-2.i [2022-11-20 20:46:49,170 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:46:49,379 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:46:49,380 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/sv-benchmarks/c/loops/sum04-2.i [2022-11-20 20:46:49,387 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/data/4dd1670e8/62b49b552d3a402991bb24354b4c7e4c/FLAG5c64d72c6 [2022-11-20 20:46:49,408 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/data/4dd1670e8/62b49b552d3a402991bb24354b4c7e4c [2022-11-20 20:46:49,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:46:49,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:46:49,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:46:49,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:46:49,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:46:49,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:46:49" (1/1) ... [2022-11-20 20:46:49,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b01f3fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:49, skipping insertion in model container [2022-11-20 20:46:49,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:46:49" (1/1) ... [2022-11-20 20:46:49,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:46:49,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:46:49,610 WARN L237 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_b6c993bf-a69c-4935-9722-516d1ce08e83/sv-benchmarks/c/loops/sum04-2.i[808,821] [2022-11-20 20:46:49,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:46:49,629 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:46:49,638 WARN L237 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_b6c993bf-a69c-4935-9722-516d1ce08e83/sv-benchmarks/c/loops/sum04-2.i[808,821] [2022-11-20 20:46:49,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:46:49,654 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:46:49,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:49 WrapperNode [2022-11-20 20:46:49,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:46:49,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:46:49,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:46:49,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:46:49,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:49" (1/1) ... [2022-11-20 20:46:49,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:49" (1/1) ... [2022-11-20 20:46:49,695 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-11-20 20:46:49,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:46:49,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:46:49,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:46:49,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:46:49,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:49" (1/1) ... [2022-11-20 20:46:49,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:49" (1/1) ... [2022-11-20 20:46:49,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:49" (1/1) ... [2022-11-20 20:46:49,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:49" (1/1) ... [2022-11-20 20:46:49,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:49" (1/1) ... [2022-11-20 20:46:49,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:49" (1/1) ... [2022-11-20 20:46:49,714 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:49" (1/1) ... [2022-11-20 20:46:49,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:49" (1/1) ... [2022-11-20 20:46:49,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:46:49,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:46:49,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:46:49,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:46:49,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:49" (1/1) ... [2022-11-20 20:46:49,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:46:49,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:46:49,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:46:49,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:46:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:46:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:46:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:46:49,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:46:49,866 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:46:49,868 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:46:50,029 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:46:50,073 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:46:50,077 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:46:50,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:46:50 BoogieIcfgContainer [2022-11-20 20:46:50,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:46:50,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:46:50,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:46:50,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:46:50,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:46:49" (1/3) ... [2022-11-20 20:46:50,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2177eae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:46:50, skipping insertion in model container [2022-11-20 20:46:50,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:46:49" (2/3) ... [2022-11-20 20:46:50,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2177eae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:46:50, skipping insertion in model container [2022-11-20 20:46:50,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:46:50" (3/3) ... [2022-11-20 20:46:50,092 INFO L112 eAbstractionObserver]: Analyzing ICFG sum04-2.i [2022-11-20 20:46:50,112 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:46:50,113 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:46:50,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:46:50,187 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4ffc4f10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:46:50,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:46:50,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-20 20:46:50,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 20:46:50,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:46:50,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 20:46:50,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:46:50,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:46:50,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1941830, now seen corresponding path program 1 times [2022-11-20 20:46:50,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:46:50,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661076226] [2022-11-20 20:46:50,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:46:50,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:46:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:46:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:50,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:46:50,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661076226] [2022-11-20 20:46:50,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661076226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:46:50,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:46:50,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:46:50,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218998513] [2022-11-20 20:46:50,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:46:50,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:46:50,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:46:50,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:46:50,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:46:50,561 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-20 20:46:50,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:46:50,613 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2022-11-20 20:46:50,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:46:50,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-20 20:46:50,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:46:50,623 INFO L225 Difference]: With dead ends: 13 [2022-11-20 20:46:50,623 INFO L226 Difference]: Without dead ends: 6 [2022-11-20 20:46:50,625 INFO L412 NwaCegarLoop]: 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 [2022-11-20 20:46:50,628 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:46:50,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:46:50,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-11-20 20:46:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-11-20 20:46:50,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2022-11-20 20:46:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-11-20 20:46:50,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-11-20 20:46:50,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:46:50,677 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-11-20 20:46:50,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-20 20:46:50,677 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-11-20 20:46:50,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 20:46:50,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:46:50,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 20:46:50,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:46:50,702 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:46:50,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:46:50,703 INFO L85 PathProgramCache]: Analyzing trace with hash 60093862, now seen corresponding path program 1 times [2022-11-20 20:46:50,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:46:50,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166621085] [2022-11-20 20:46:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:46:50,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:46:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:46:50,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:50,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:46:50,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166621085] [2022-11-20 20:46:50,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166621085] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:46:50,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970486088] [2022-11-20 20:46:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:46:50,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:46:50,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:46:50,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:46:50,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:46:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:46:50,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:46:50,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:46:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:50,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:46:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:50,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970486088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:46:50,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1590525844] [2022-11-20 20:46:50,962 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-20 20:46:50,962 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:46:50,966 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:46:50,972 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:46:50,973 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:46:51,205 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:46:51,330 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '69#(and (= (ite (or (= 16 |ULTIMATE.start_main_~sn~0#1|) (= |ULTIMATE.start_main_~sn~0#1| 0)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~sn~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< 8 |ULTIMATE.start_main_~i~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:46:51,331 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:46:51,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:46:51,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-20 20:46:51,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61930772] [2022-11-20 20:46:51,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:46:51,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:46:51,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:46:51,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:46:51,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:46:51,334 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-20 20:46:51,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:46:51,351 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2022-11-20 20:46:51,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:46:51,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 5 [2022-11-20 20:46:51,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:46:51,352 INFO L225 Difference]: With dead ends: 12 [2022-11-20 20:46:51,353 INFO L226 Difference]: Without dead ends: 9 [2022-11-20 20:46:51,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:46:51,354 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:46:51,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:46:51,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-20 20:46:51,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-20 20:46:51,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-11-20 20:46:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-20 20:46:51,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-20 20:46:51,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:46:51,361 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-20 20:46:51,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-20 20:46:51,362 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-20 20:46:51,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 20:46:51,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:46:51,363 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-20 20:46:51,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:46:51,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:46:51,568 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:46:51,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:46:51,569 INFO L85 PathProgramCache]: Analyzing trace with hash -847267514, now seen corresponding path program 2 times [2022-11-20 20:46:51,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:46:51,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480879265] [2022-11-20 20:46:51,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:46:51,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:46:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:46:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:51,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:46:51,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480879265] [2022-11-20 20:46:51,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480879265] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:46:51,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528654550] [2022-11-20 20:46:51,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:46:51,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:46:51,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:46:51,759 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:46:51,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:46:51,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 20:46:51,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:46:51,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 20:46:51,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:46:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:51,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:46:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:52,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528654550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:46:52,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [121032964] [2022-11-20 20:46:52,008 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-20 20:46:52,009 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:46:52,009 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:46:52,009 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:46:52,009 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:46:52,155 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:46:52,253 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '156#(and (= (ite (or (= 16 |ULTIMATE.start_main_~sn~0#1|) (= |ULTIMATE.start_main_~sn~0#1| 0)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~sn~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< 8 |ULTIMATE.start_main_~i~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:46:52,253 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:46:52,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:46:52,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-11-20 20:46:52,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194066637] [2022-11-20 20:46:52,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:46:52,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:46:52,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:46:52,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:46:52,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:46:52,258 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 11 states, 11 states have (on average 1.3636363636363635) 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) [2022-11-20 20:46:52,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:46:52,281 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2022-11-20 20:46:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:46:52,281 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.3636363636363635) 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) Word has length 8 [2022-11-20 20:46:52,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:46:52,282 INFO L225 Difference]: With dead ends: 16 [2022-11-20 20:46:52,282 INFO L226 Difference]: Without dead ends: 13 [2022-11-20 20:46:52,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:46:52,284 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:46:52,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:46:52,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-20 20:46:52,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-20 20:46:52,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 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) [2022-11-20 20:46:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-11-20 20:46:52,288 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2022-11-20 20:46:52,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:46:52,288 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-11-20 20:46:52,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.3636363636363635) 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) [2022-11-20 20:46:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-11-20 20:46:52,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 20:46:52,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:46:52,289 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1] [2022-11-20 20:46:52,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:46:52,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-20 20:46:52,495 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:46:52,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:46:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1813369158, now seen corresponding path program 3 times [2022-11-20 20:46:52,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:46:52,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31704256] [2022-11-20 20:46:52,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:46:52,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:46:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:46:52,762 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:52,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:46:52,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31704256] [2022-11-20 20:46:52,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31704256] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:46:52,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714065197] [2022-11-20 20:46:52,763 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 20:46:52,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:46:52,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:46:52,764 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:46:52,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:46:52,813 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 20:46:52,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:46:52,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 20:46:52,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:46:52,910 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:52,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:46:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:53,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714065197] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:46:53,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1596747388] [2022-11-20 20:46:53,180 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-20 20:46:53,181 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:46:53,181 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:46:53,181 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:46:53,181 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:46:53,229 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:46:53,376 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '294#(and (= (ite (or (= 16 |ULTIMATE.start_main_~sn~0#1|) (= |ULTIMATE.start_main_~sn~0#1| 0)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~sn~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< 8 |ULTIMATE.start_main_~i~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:46:53,377 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:46:53,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:46:53,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2022-11-20 20:46:53,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896794364] [2022-11-20 20:46:53,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:46:53,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 20:46:53,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:46:53,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 20:46:53,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2022-11-20 20:46:53,379 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 22 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 21 states have internal predecessors, (24), 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) [2022-11-20 20:46:53,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:46:53,512 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-11-20 20:46:53,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:46:53,513 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 21 states have internal predecessors, (24), 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 12 [2022-11-20 20:46:53,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:46:53,514 INFO L225 Difference]: With dead ends: 17 [2022-11-20 20:46:53,514 INFO L226 Difference]: Without dead ends: 14 [2022-11-20 20:46:53,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-11-20 20:46:53,515 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:46:53,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:46:53,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-20 20:46:53,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-20 20:46:53,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 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) [2022-11-20 20:46:53,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-11-20 20:46:53,519 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-11-20 20:46:53,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:46:53,520 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-11-20 20:46:53,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 21 states have internal predecessors, (24), 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) [2022-11-20 20:46:53,520 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-11-20 20:46:53,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 20:46:53,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:46:53,521 INFO L195 NwaCegarLoop]: trace histogram [9, 1, 1, 1, 1] [2022-11-20 20:46:53,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:46:53,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:46:53,726 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:46:53,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:46:53,726 INFO L85 PathProgramCache]: Analyzing trace with hash 379766182, now seen corresponding path program 4 times [2022-11-20 20:46:53,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:46:53,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938660129] [2022-11-20 20:46:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:46:53,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:46:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:46:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 37 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:53,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:46:53,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938660129] [2022-11-20 20:46:53,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938660129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:46:53,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527772097] [2022-11-20 20:46:53,914 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 20:46:53,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:46:53,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:46:53,916 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:46:53,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:46:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:46:53,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 20:46:53,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:46:54,012 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:54,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:46:54,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527772097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:46:54,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:46:54,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 11 [2022-11-20 20:46:54,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023666052] [2022-11-20 20:46:54,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:46:54,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:46:54,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:46:54,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:46:54,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:46:54,018 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 11 states, 11 states have (on average 1.1818181818181819) 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) [2022-11-20 20:46:54,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:46:54,039 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-20 20:46:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:46:54,040 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.1818181818181819) 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) Word has length 13 [2022-11-20 20:46:54,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:46:54,040 INFO L225 Difference]: With dead ends: 14 [2022-11-20 20:46:54,041 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:46:54,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:46:54,043 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:46:54,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:46:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:46:54,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:46:54,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-20 20:46:54,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:46:54,047 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-11-20 20:46:54,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:46:54,047 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:46:54,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.1818181818181819) 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) [2022-11-20 20:46:54,047 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:46:54,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:46:54,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:46:54,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 20:46:54,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:46:54,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 20:46:54,335 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 20:46:54,335 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-11-20 20:46:54,335 INFO L902 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: true [2022-11-20 20:46:54,335 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 20:46:54,336 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-11-20 20:46:54,336 INFO L895 garLoopResultBuilder]: At program point L24-3(lines 24 26) the Hoare annotation is: (or (and (<= 5 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~sn~0#1| 8) (<= 8 |ULTIMATE.start_main_~sn~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 5)) (and (<= 7 |ULTIMATE.start_main_~i~0#1|) (< |ULTIMATE.start_main_~i~0#1| 8) (<= 12 |ULTIMATE.start_main_~sn~0#1|) (<= |ULTIMATE.start_main_~sn~0#1| 12)) (and (<= |ULTIMATE.start_main_~i~0#1| 4) (<= 6 |ULTIMATE.start_main_~sn~0#1|) (<= 4 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~sn~0#1| 6)) (and (<= |ULTIMATE.start_main_~sn~0#1| 14) (<= |ULTIMATE.start_main_~i~0#1| 8) (<= 14 |ULTIMATE.start_main_~sn~0#1|) (<= 8 |ULTIMATE.start_main_~i~0#1|)) (and (< |ULTIMATE.start_main_~i~0#1| 7) (<= 6 |ULTIMATE.start_main_~i~0#1|) (<= 10 |ULTIMATE.start_main_~sn~0#1|) (<= |ULTIMATE.start_main_~sn~0#1| 10)) (and (<= |ULTIMATE.start_main_~sn~0#1| 2) (<= |ULTIMATE.start_main_~i~0#1| 2) (<= 2 |ULTIMATE.start_main_~sn~0#1|) (<= 2 |ULTIMATE.start_main_~i~0#1|)) (and (<= |ULTIMATE.start_main_~sn~0#1| 16) (<= 9 |ULTIMATE.start_main_~i~0#1|) (< 15 |ULTIMATE.start_main_~sn~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 1) (= |ULTIMATE.start_main_~sn~0#1| 0)) (and (<= |ULTIMATE.start_main_~sn~0#1| 4) (<= |ULTIMATE.start_main_~i~0#1| 3) (<= 4 |ULTIMATE.start_main_~sn~0#1|) (<= 3 |ULTIMATE.start_main_~i~0#1|))) [2022-11-20 20:46:54,336 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-11-20 20:46:54,339 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1] [2022-11-20 20:46:54,341 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:46:54,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:46:54 BoogieIcfgContainer [2022-11-20 20:46:54,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:46:54,363 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:46:54,364 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:46:54,364 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:46:54,365 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:46:50" (3/4) ... [2022-11-20 20:46:54,367 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:46:54,375 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-20 20:46:54,376 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 20:46:54,376 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 20:46:54,376 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:46:54,406 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:46:54,406 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:46:54,407 INFO L158 Benchmark]: Toolchain (without parser) took 4990.45ms. Allocated memory was 127.9MB in the beginning and 176.2MB in the end (delta: 48.2MB). Free memory was 66.9MB in the beginning and 79.3MB in the end (delta: -12.4MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2022-11-20 20:46:54,407 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory was 93.1MB in the beginning and 93.0MB in the end (delta: 66.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:46:54,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.45ms. Allocated memory was 127.9MB in the beginning and 176.2MB in the end (delta: 48.2MB). Free memory was 66.7MB in the beginning and 139.5MB in the end (delta: -72.8MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2022-11-20 20:46:54,408 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.60ms. Allocated memory is still 176.2MB. Free memory was 139.5MB in the beginning and 138.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:46:54,408 INFO L158 Benchmark]: Boogie Preprocessor took 20.48ms. Allocated memory is still 176.2MB. Free memory was 138.2MB in the beginning and 137.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:46:54,408 INFO L158 Benchmark]: RCFGBuilder took 361.89ms. Allocated memory is still 176.2MB. Free memory was 137.1MB in the beginning and 127.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 20:46:54,409 INFO L158 Benchmark]: TraceAbstraction took 4279.70ms. Allocated memory is still 176.2MB. Free memory was 126.4MB in the beginning and 81.4MB in the end (delta: 45.0MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. [2022-11-20 20:46:54,409 INFO L158 Benchmark]: Witness Printer took 43.10ms. Allocated memory is still 176.2MB. Free memory was 81.4MB in the beginning and 79.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:46:54,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory was 93.1MB in the beginning and 93.0MB in the end (delta: 66.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.45ms. Allocated memory was 127.9MB in the beginning and 176.2MB in the end (delta: 48.2MB). Free memory was 66.7MB in the beginning and 139.5MB in the end (delta: -72.8MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.60ms. Allocated memory is still 176.2MB. Free memory was 139.5MB in the beginning and 138.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.48ms. Allocated memory is still 176.2MB. Free memory was 138.2MB in the beginning and 137.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 361.89ms. Allocated memory is still 176.2MB. Free memory was 137.1MB in the beginning and 127.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4279.70ms. Allocated memory is still 176.2MB. Free memory was 126.4MB in the beginning and 81.4MB in the end (delta: 45.0MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. * Witness Printer took 43.10ms. Allocated memory is still 176.2MB. Free memory was 81.4MB in the beginning and 79.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.2s, OverallIterations: 5, TraceHistogramMax: 9, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 229 IncrementalHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 9 mSDtfsCounter, 229 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 55 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=4, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 12 NumberOfFragments, 110 HoareAnnotationTreeSize, 2 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 351 SizeOfPredicates, 2 NumberOfNonLiveVariables, 242 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 82/231 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((((((((((5 <= i && sn <= 8) && 8 <= sn) && i <= 5) || (((7 <= i && i < 8) && 12 <= sn) && sn <= 12)) || (((i <= 4 && 6 <= sn) && 4 <= i) && sn <= 6)) || (((sn <= 14 && i <= 8) && 14 <= sn) && 8 <= i)) || (((i < 7 && 6 <= i) && 10 <= sn) && sn <= 10)) || (((sn <= 2 && i <= 2) && 2 <= sn) && 2 <= i)) || ((sn <= 16 && 9 <= i) && 15 < sn)) || (i == 1 && sn == 0)) || (((sn <= 4 && i <= 3) && 4 <= sn) && 3 <= i) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 20:46:54,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6c993bf-a69c-4935-9722-516d1ce08e83/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE