./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/loopv1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/loopv1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH --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 ca45dd6499a33c329d4936fe2abf573a615c1738e62276020fbb87860c7f9abc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:33:15,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:33:15,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:33:16,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:33:16,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:33:16,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:33:16,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:33:16,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:33:16,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:33:16,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:33:16,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:33:16,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:33:16,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:33:16,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:33:16,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:33:16,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:33:16,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:33:16,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:33:16,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:33:16,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:33:16,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:33:16,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:33:16,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:33:16,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:33:16,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:33:16,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:33:16,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:33:16,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:33:16,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:33:16,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:33:16,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:33:16,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:33:16,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:33:16,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:33:16,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:33:16,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:33:16,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:33:16,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:33:16,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:33:16,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:33:16,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:33:16,100 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:33:16,128 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:33:16,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:33:16,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:33:16,130 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:33:16,130 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:33:16,130 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:33:16,130 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:33:16,130 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:33:16,131 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:33:16,131 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:33:16,131 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:33:16,131 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:33:16,131 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:33:16,132 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:33:16,132 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:33:16,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:33:16,133 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:33:16,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:33:16,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:33:16,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:33:16,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:33:16,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:33:16,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:33:16,134 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:33:16,134 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:33:16,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:33:16,134 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:33:16,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:33:16,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:33:16,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:33:16,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:33:16,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:33:16,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:33:16,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:33:16,136 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:33:16,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:33:16,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:33:16,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:33:16,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:33:16,137 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_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca45dd6499a33c329d4936fe2abf573a615c1738e62276020fbb87860c7f9abc [2021-11-03 04:33:16,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:33:16,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:33:16,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:33:16,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:33:16,451 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:33:16,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/loops-crafted-1/loopv1.c [2021-11-03 04:33:16,528 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/data/6e1c7e904/5e2cb151ca1943faa0d6f3b82bcff22c/FLAG2ed517ce0 [2021-11-03 04:33:16,970 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:33:16,971 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/sv-benchmarks/c/loops-crafted-1/loopv1.c [2021-11-03 04:33:16,984 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/data/6e1c7e904/5e2cb151ca1943faa0d6f3b82bcff22c/FLAG2ed517ce0 [2021-11-03 04:33:17,357 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/data/6e1c7e904/5e2cb151ca1943faa0d6f3b82bcff22c [2021-11-03 04:33:17,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:33:17,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:33:17,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:33:17,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:33:17,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:33:17,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:33:17" (1/1) ... [2021-11-03 04:33:17,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f73472a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:17, skipping insertion in model container [2021-11-03 04:33:17,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:33:17" (1/1) ... [2021-11-03 04:33:17,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:33:17,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:33:17,568 WARN L228 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_145d837e-1eda-4fcb-bda2-e1774ec428a3/sv-benchmarks/c/loops-crafted-1/loopv1.c[456,469] [2021-11-03 04:33:17,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:33:17,587 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:33:17,599 WARN L228 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_145d837e-1eda-4fcb-bda2-e1774ec428a3/sv-benchmarks/c/loops-crafted-1/loopv1.c[456,469] [2021-11-03 04:33:17,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:33:17,615 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:33:17,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:17 WrapperNode [2021-11-03 04:33:17,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:33:17,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:33:17,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:33:17,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:33:17,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:17" (1/1) ... [2021-11-03 04:33:17,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:17" (1/1) ... [2021-11-03 04:33:17,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:33:17,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:33:17,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:33:17,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:33:17,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:17" (1/1) ... [2021-11-03 04:33:17,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:17" (1/1) ... [2021-11-03 04:33:17,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:17" (1/1) ... [2021-11-03 04:33:17,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:17" (1/1) ... [2021-11-03 04:33:17,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:17" (1/1) ... [2021-11-03 04:33:17,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:17" (1/1) ... [2021-11-03 04:33:17,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:17" (1/1) ... [2021-11-03 04:33:17,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:33:17,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:33:17,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:33:17,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:33:17,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:17" (1/1) ... [2021-11-03 04:33:17,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:33:17,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:33:17,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:33:17,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:33:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:33:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:33:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:33:17,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:33:18,034 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:33:18,035 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 04:33:18,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:33:18 BoogieIcfgContainer [2021-11-03 04:33:18,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:33:18,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:33:18,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:33:18,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:33:18,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:33:17" (1/3) ... [2021-11-03 04:33:18,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466428f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:33:18, skipping insertion in model container [2021-11-03 04:33:18,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:17" (2/3) ... [2021-11-03 04:33:18,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466428f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:33:18, skipping insertion in model container [2021-11-03 04:33:18,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:33:18" (3/3) ... [2021-11-03 04:33:18,060 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv1.c [2021-11-03 04:33:18,065 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:33:18,065 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:33:18,127 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:33:18,134 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 [2021-11-03 04:33:18,134 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:33:18,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-11-03 04:33:18,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:33:18,152 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:18,152 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:33:18,153 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:18,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:18,159 INFO L85 PathProgramCache]: Analyzing trace with hash 66747185, now seen corresponding path program 1 times [2021-11-03 04:33:18,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:18,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401800515] [2021-11-03 04:33:18,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:18,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:18,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:33:18,367 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:18,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401800515] [2021-11-03 04:33:18,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401800515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:18,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:18,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:33:18,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667932693] [2021-11-03 04:33:18,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:33:18,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:18,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:33:18,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:33:18,391 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-03 04:33:18,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:18,431 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-11-03 04:33:18,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:33:18,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 [2021-11-03 04:33:18,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:18,442 INFO L225 Difference]: With dead ends: 21 [2021-11-03 04:33:18,442 INFO L226 Difference]: Without dead ends: 7 [2021-11-03 04:33:18,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:33:18,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-03 04:33:18,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-03 04:33:18,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2021-11-03 04:33:18,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-11-03 04:33:18,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-11-03 04:33:18,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:18,472 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-11-03 04:33:18,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-03 04:33:18,472 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-11-03 04:33:18,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:33:18,473 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:18,473 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:33:18,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:33:18,474 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:33:18,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:18,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2069119459, now seen corresponding path program 1 times [2021-11-03 04:33:18,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:33:18,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665149914] [2021-11-03 04:33:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:18,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:33:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:33:18,854 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:33:18,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665149914] [2021-11-03 04:33:18,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665149914] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:33:18,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215077576] [2021-11-03 04:33:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:18,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:33:18,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:33:18,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:33:18,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:33:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:18,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:33:18,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:33:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:33:19,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:33:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:33:19,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215077576] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:33:19,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [562864173] [2021-11-03 04:33:19,536 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-03 04:33:19,536 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:33:19,547 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:33:19,561 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:33:19,566 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:33:19,604 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:33:19,607 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:33:19,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:33:19,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:33:19,611 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:33:19,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:33:19,613 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 04:33:19,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-03 04:33:19,637 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-11-03 04:33:19,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:33:19,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:33:19,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:33:19,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:33:19,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:33:19,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:33:19,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:33:19,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:33:19,665 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:33:19,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:33:19,692 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:33:19,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:33:19,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:33:19,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:33:19,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:33:19,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:33:19,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:33:19,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:33:19,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:33:19,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:33:19,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-03 04:33:19,734 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:33:19,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:33:19,738 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:33:19,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:33:19,739 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:33:19,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:33:19,758 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:33:19,760 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:33:19,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-11-03 04:33:19,763 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:33:19,764 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:127, output treesize:102 [2021-11-03 04:33:19,773 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:33:19,792 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:33:19,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:33:19,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-03 04:33:19,803 INFO L185 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size 113 [2021-11-03 04:33:19,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:33:19,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:33:19,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:33:19,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:33:19,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:33:19,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:33:19,896 INFO L180 QuantifierPusher]: treesize reduction 42, result has 64.7 percent of original size [2021-11-03 04:33:19,901 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:33:19,902 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:33:19,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 04:33:19,913 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:33:19,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:33:19,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-03 04:33:19,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-03 04:33:19,935 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:33:20,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:33:20,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:33:20,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-03 04:33:20,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737359691] [2021-11-03 04:33:20,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:33:20,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:33:20,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:33:20,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:33:20,533 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2021-11-03 04:33:20,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:20,592 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-11-03 04:33:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:33:20,592 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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 6 [2021-11-03 04:33:20,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:20,593 INFO L225 Difference]: With dead ends: 9 [2021-11-03 04:33:20,593 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 04:33:20,594 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:33:20,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 04:33:20,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 04:33:20,595 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) [2021-11-03 04:33:20,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 04:33:20,595 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-11-03 04:33:20,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:20,595 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 04:33:20,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2021-11-03 04:33:20,596 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 04:33:20,596 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 04:33:20,601 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:33:20,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:33:20,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:33:20,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 04:33:20,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:33:20,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:33:20,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:33:20,822 INFO L860 garLoopResultBuilder]: At program point L33(lines 20 34) the Hoare annotation is: true [2021-11-03 04:33:20,822 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 04:33:20,823 INFO L853 garLoopResultBuilder]: At program point L27-2(lines 25 31) the Hoare annotation is: (<= (div (+ (* ULTIMATE.start_main_~i~0 (- 1)) (- 3)) (- 3)) (+ (div ULTIMATE.start_main_~i~0 3) 1)) [2021-11-03 04:33:20,823 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-11-03 04:33:20,823 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 15) no Hoare annotation was computed. [2021-11-03 04:33:20,823 INFO L853 garLoopResultBuilder]: At program point L13-2(lines 12 17) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-11-03 04:33:20,823 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 04:33:20,824 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-03 04:33:20,824 INFO L857 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2021-11-03 04:33:20,827 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-03 04:33:20,828 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:33:20,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:33:20 BoogieIcfgContainer [2021-11-03 04:33:20,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:33:20,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:33:20,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:33:20,841 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:33:20,841 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:33:18" (3/4) ... [2021-11-03 04:33:20,844 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 04:33:20,852 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-03 04:33:20,853 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-03 04:33:20,853 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:33:20,853 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:33:20,886 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:33:20,886 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:33:20,887 INFO L168 Benchmark]: Toolchain (without parser) took 3522.12 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 72.5 MB in the beginning and 74.1 MB in the end (delta: -1.6 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2021-11-03 04:33:20,888 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 53.4 MB in the beginning and 53.4 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:33:20,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.78 ms. Allocated memory is still 107.0 MB. Free memory was 72.3 MB in the beginning and 83.4 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:33:20,889 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.15 ms. Allocated memory is still 107.0 MB. Free memory was 83.4 MB in the beginning and 82.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:33:20,889 INFO L168 Benchmark]: Boogie Preprocessor took 19.08 ms. Allocated memory is still 107.0 MB. Free memory was 82.2 MB in the beginning and 81.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:33:20,889 INFO L168 Benchmark]: RCFGBuilder took 369.92 ms. Allocated memory is still 107.0 MB. Free memory was 81.1 MB in the beginning and 70.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:33:20,890 INFO L168 Benchmark]: TraceAbstraction took 2801.24 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 69.8 MB in the beginning and 76.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:33:20,891 INFO L168 Benchmark]: Witness Printer took 45.64 ms. Allocated memory is still 130.0 MB. Free memory was 76.2 MB in the beginning and 74.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:33:20,893 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 53.4 MB in the beginning and 53.4 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 247.78 ms. Allocated memory is still 107.0 MB. Free memory was 72.3 MB in the beginning and 83.4 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.15 ms. Allocated memory is still 107.0 MB. Free memory was 83.4 MB in the beginning and 82.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.08 ms. Allocated memory is still 107.0 MB. Free memory was 82.2 MB in the beginning and 81.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 369.92 ms. Allocated memory is still 107.0 MB. Free memory was 81.1 MB in the beginning and 70.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2801.24 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 69.8 MB in the beginning and 76.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * Witness Printer took 45.64 ms. Allocated memory is still 130.0 MB. Free memory was 76.2 MB in the beginning and 74.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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: 14]: 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, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 13 SDslu, 16 SDs, 0 SdLazy, 24 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 18 HoareAnnotationTreeSize, 3 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 79 SizeOfPredicates, 5 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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: 12]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (i * -1 + -3) / -3 <= i / 3 + 1 RESULT: Ultimate proved your program to be correct! [2021-11-03 04:33:20,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145d837e-1eda-4fcb-bda2-e1774ec428a3/bin/utaipan-aC7eJsxGYH/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