./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9e5c7c8f34d0399e1ec13072e237ea7df9536407415bc8e3ff2e61c34b30de96 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:44:29,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:44:29,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:44:30,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:44:30,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:44:30,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:44:30,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:44:30,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:44:30,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:44:30,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:44:30,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:44:30,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:44:30,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:44:30,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:44:30,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:44:30,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:44:30,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:44:30,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:44:30,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:44:30,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:44:30,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:44:30,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:44:30,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:44:30,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:44:30,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:44:30,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:44:30,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:44:30,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:44:30,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:44:30,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:44:30,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:44:30,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:44:30,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:44:30,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:44:30,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:44:30,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:44:30,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:44:30,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:44:30,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:44:30,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:44:30,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:44:30,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:44:30,133 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:44:30,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:44:30,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:44:30,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:44:30,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:44:30,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:44:30,136 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:44:30,137 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:44:30,137 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:44:30,137 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:44:30,138 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:44:30,138 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:44:30,138 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:44:30,139 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:44:30,139 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:44:30,139 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:44:30,139 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:44:30,140 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:44:30,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:44:30,141 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:44:30,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:44:30,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:44:30,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:44:30,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:44:30,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:44:30,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:44:30,143 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:44:30,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:44:30,144 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:44:30,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:44:30,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:44:30,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:44:30,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:44:30,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:44:30,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:44:30,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:44:30,146 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:44:30,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:44:30,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:44:30,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:44:30,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:44:30,147 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_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e5c7c8f34d0399e1ec13072e237ea7df9536407415bc8e3ff2e61c34b30de96 [2021-11-23 02:44:30,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:44:30,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:44:30,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:44:30,497 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:44:30,498 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:44:30,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2021-11-23 02:44:30,585 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/data/4f3247a99/0c75f4e07f9f4634b8775f3ba31e1fc6/FLAG5cdc5e7f5 [2021-11-23 02:44:31,073 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:44:31,074 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2021-11-23 02:44:31,083 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/data/4f3247a99/0c75f4e07f9f4634b8775f3ba31e1fc6/FLAG5cdc5e7f5 [2021-11-23 02:44:31,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/data/4f3247a99/0c75f4e07f9f4634b8775f3ba31e1fc6 [2021-11-23 02:44:31,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:44:31,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:44:31,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:44:31,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:44:31,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:44:31,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:31" (1/1) ... [2021-11-23 02:44:31,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea2a428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:31, skipping insertion in model container [2021-11-23 02:44:31,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:31" (1/1) ... [2021-11-23 02:44:31,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:44:31,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:44:31,732 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2021-11-23 02:44:31,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:44:31,747 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:44:31,812 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2021-11-23 02:44:31,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:44:31,829 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:44:31,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:31 WrapperNode [2021-11-23 02:44:31,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:44:31,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:44:31,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:44:31,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:44:31,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:31" (1/1) ... [2021-11-23 02:44:31,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:31" (1/1) ... [2021-11-23 02:44:31,921 INFO L137 Inliner]: procedures = 17, calls = 203, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 373 [2021-11-23 02:44:31,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:44:31,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:44:31,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:44:31,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:44:31,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:31" (1/1) ... [2021-11-23 02:44:31,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:31" (1/1) ... [2021-11-23 02:44:31,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:31" (1/1) ... [2021-11-23 02:44:31,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:31" (1/1) ... [2021-11-23 02:44:31,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:31" (1/1) ... [2021-11-23 02:44:32,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:31" (1/1) ... [2021-11-23 02:44:32,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:31" (1/1) ... [2021-11-23 02:44:32,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:44:32,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:44:32,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:44:32,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:44:32,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:31" (1/1) ... [2021-11-23 02:44:32,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:44:32,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:44:32,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:44:32,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:44:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:44:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-11-23 02:44:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:44:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:44:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:44:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:44:32,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:44:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:44:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:44:32,214 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:44:32,215 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:44:33,020 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:44:33,034 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:44:33,035 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:44:33,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:33 BoogieIcfgContainer [2021-11-23 02:44:33,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:44:33,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:44:33,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:44:33,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:44:33,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:44:31" (1/3) ... [2021-11-23 02:44:33,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d6f2aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:33, skipping insertion in model container [2021-11-23 02:44:33,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:31" (2/3) ... [2021-11-23 02:44:33,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d6f2aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:33, skipping insertion in model container [2021-11-23 02:44:33,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:33" (3/3) ... [2021-11-23 02:44:33,047 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2021-11-23 02:44:33,053 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:44:33,053 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:44:33,100 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:44:33,108 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:44:33,108 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:44:33,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:44:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 02:44:33,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:44:33,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:44:33,130 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:44:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:44:33,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1202647943, now seen corresponding path program 1 times [2021-11-23 02:44:33,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:44:33,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472964620] [2021-11-23 02:44:33,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:33,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:44:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:33,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:33,542 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:44:33,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472964620] [2021-11-23 02:44:33,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472964620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:44:33,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:44:33,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:44:33,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066585016] [2021-11-23 02:44:33,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:44:33,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:44:33,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:44:33,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:44:33,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:44:33,591 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 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 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:44:33,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:44:33,645 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2021-11-23 02:44:33,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:44:33,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-23 02:44:33,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:44:33,657 INFO L225 Difference]: With dead ends: 27 [2021-11-23 02:44:33,657 INFO L226 Difference]: Without dead ends: 16 [2021-11-23 02:44:33,660 INFO L932 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 [2021-11-23 02:44:33,665 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:44:33,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 26 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:44:33,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-23 02:44:33,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2021-11-23 02:44:33,706 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) [2021-11-23 02:44:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-23 02:44:33,708 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2021-11-23 02:44:33,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:44:33,709 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-23 02:44:33,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:44:33,710 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-23 02:44:33,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 02:44:33,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:44:33,712 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:44:33,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:44:33,713 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:44:33,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:44:33,718 INFO L85 PathProgramCache]: Analyzing trace with hash 507664458, now seen corresponding path program 1 times [2021-11-23 02:44:33,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:44:33,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425959331] [2021-11-23 02:44:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:33,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:44:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:33,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:33,933 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:44:33,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425959331] [2021-11-23 02:44:33,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425959331] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:44:33,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965739366] [2021-11-23 02:44:33,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:33,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:44:33,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:44:33,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:44:33,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:44:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:34,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:44:34,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:44:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:34,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:44:34,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:34,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965739366] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:44:34,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [72926421] [2021-11-23 02:44:34,378 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-23 02:44:34,378 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:44:34,383 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:44:34,388 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:44:34,388 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:44:34,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:34,603 INFO L354 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2021-11-23 02:44:34,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 23 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 85 [2021-11-23 02:44:34,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:34,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 54 [2021-11-23 02:44:35,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 820 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 450 [2021-11-23 02:44:35,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 820 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 450 [2021-11-23 02:44:35,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:35,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:35,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:35,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:35,896 INFO L354 Elim1Store]: treesize reduction 40, result has 48.1 percent of original size [2021-11-23 02:44:35,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 26 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 78 [2021-11-23 02:44:36,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:36,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:36,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:36,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:36,129 INFO L354 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2021-11-23 02:44:36,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 52 treesize of output 89 [2021-11-23 02:44:38,031 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:44:38,962 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '145#(and (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1.offset|) (<= 0 ~Id_MCDC_93~0) (<= 0 |ULTIMATE.start_main_~main__Id_MCDC_116~0#1|) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1.base|) (<= 0 |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.base|) (<= |ULTIMATE.start_main_~__tmp_1~0#1.offset| 0) (<= |ULTIMATE.start_main_~main__Id_MCDC_115~0#1| 0) (<= 0 |ULTIMATE.start_main_~main__Id_MCDC_115~0#1|) (<= |#NULL.offset| 0) (<= ~__return_main~0 0) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1|) (<= 0 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset|) (<= 0 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.base|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.base|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~main__Id_MCDC_116~0#1| 0) (<= 0 |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.offset|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset|) (<= 0 ~__return_main~0) (<= |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset| 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~1#1| |ULTIMATE.start_main_~__tmp_3~0#1|) (<= 42 (mod ~Id_MCDC_93~0 4294967296)) (= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~1#1| 0) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0#1| 0) (<= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset| 0))' at error location [2021-11-23 02:44:38,962 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:44:38,962 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:44:38,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-23 02:44:38,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701571472] [2021-11-23 02:44:38,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:44:38,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:44:38,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:44:38,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:44:38,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-23 02:44:38,966 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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) [2021-11-23 02:44:39,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:44:39,162 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2021-11-23 02:44:39,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 02:44:39,162 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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 [2021-11-23 02:44:39,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:44:39,163 INFO L225 Difference]: With dead ends: 33 [2021-11-23 02:44:39,163 INFO L226 Difference]: Without dead ends: 30 [2021-11-23 02:44:39,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2021-11-23 02:44:39,166 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:44:39,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 31 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:44:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-23 02:44:39,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-11-23 02:44:39,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:44:39,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-11-23 02:44:39,173 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 12 [2021-11-23 02:44:39,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:44:39,173 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-11-23 02:44:39,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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) [2021-11-23 02:44:39,174 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-11-23 02:44:39,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 02:44:39,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:44:39,175 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2021-11-23 02:44:39,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:44:39,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:44:39,401 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:44:39,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:44:39,402 INFO L85 PathProgramCache]: Analyzing trace with hash -522733127, now seen corresponding path program 2 times [2021-11-23 02:44:39,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:44:39,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168104023] [2021-11-23 02:44:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:39,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:44:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:39,655 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:39,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:44:39,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168104023] [2021-11-23 02:44:39,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168104023] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:44:39,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821368872] [2021-11-23 02:44:39,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:44:39,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:44:39,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:44:39,658 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:44:39,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:44:39,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-23 02:44:39,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:44:39,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 02:44:39,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:44:40,115 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:44:40,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-11-23 02:44:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:44:40,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:44:41,305 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:44:41,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821368872] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:44:41,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1416591860] [2021-11-23 02:44:41,310 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-23 02:44:41,310 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:44:41,311 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:44:41,311 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:44:41,311 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:44:41,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:41,415 INFO L354 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2021-11-23 02:44:41,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 23 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 85 [2021-11-23 02:44:41,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:41,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 54 [2021-11-23 02:44:41,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 820 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 450 [2021-11-23 02:44:41,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:41,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:41,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:41,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:41,979 INFO L354 Elim1Store]: treesize reduction 40, result has 48.1 percent of original size [2021-11-23 02:44:41,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 26 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 78 [2021-11-23 02:44:42,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 820 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 450 [2021-11-23 02:44:42,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:42,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:42,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:42,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:42,412 INFO L354 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2021-11-23 02:44:42,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 52 treesize of output 89 [2021-11-23 02:44:43,344 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:44:44,571 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '410#(and (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1.offset|) (<= 0 ~Id_MCDC_93~0) (<= 0 |ULTIMATE.start_main_~main__Id_MCDC_116~0#1|) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1.base|) (<= 0 |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.base|) (<= |ULTIMATE.start_main_~__tmp_1~0#1.offset| 0) (<= |ULTIMATE.start_main_~main__Id_MCDC_115~0#1| 0) (<= 0 |ULTIMATE.start_main_~main__Id_MCDC_115~0#1|) (<= |#NULL.offset| 0) (<= ~__return_main~0 0) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1|) (<= 0 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset|) (<= 0 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.base|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.base|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~main__Id_MCDC_116~0#1| 0) (<= 0 |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.offset|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset|) (<= 0 ~__return_main~0) (<= |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset| 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~1#1| |ULTIMATE.start_main_~__tmp_3~0#1|) (<= 42 (mod ~Id_MCDC_93~0 4294967296)) (= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~1#1| 0) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0#1| 0) (<= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset| 0))' at error location [2021-11-23 02:44:44,571 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:44:44,572 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:44:44,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2021-11-23 02:44:44,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447728409] [2021-11-23 02:44:44,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:44:44,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 02:44:44,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:44:44,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 02:44:44,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2021-11-23 02:44:44,574 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:44:45,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:44:45,668 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-11-23 02:44:45,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 02:44:45,669 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-23 02:44:45,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:44:45,670 INFO L225 Difference]: With dead ends: 39 [2021-11-23 02:44:45,670 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 02:44:45,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=333, Invalid=1307, Unknown=0, NotChecked=0, Total=1640 [2021-11-23 02:44:45,672 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 84 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:44:45,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 29 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 134 Invalid, 0 Unknown, 1 Unchecked, 0.4s Time] [2021-11-23 02:44:45,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 02:44:45,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 02:44:45,674 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) [2021-11-23 02:44:45,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 02:44:45,674 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-11-23 02:44:45,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:44:45,674 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 02:44:45,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:44:45,675 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 02:44:45,675 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 02:44:45,677 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:44:45,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:44:45,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-23 02:44:45,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 02:44:46,012 INFO L858 garLoopResultBuilder]: For program point L161(lines 161 236) no Hoare annotation was computed. [2021-11-23 02:44:46,012 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 02:44:46,012 INFO L858 garLoopResultBuilder]: For program point L190(lines 190 208) no Hoare annotation was computed. [2021-11-23 02:44:46,012 INFO L858 garLoopResultBuilder]: For program point L221(line 221) no Hoare annotation was computed. [2021-11-23 02:44:46,013 INFO L858 garLoopResultBuilder]: For program point L219(lines 219 227) no Hoare annotation was computed. [2021-11-23 02:44:46,013 INFO L858 garLoopResultBuilder]: For program point L182(lines 182 229) no Hoare annotation was computed. [2021-11-23 02:44:46,013 INFO L858 garLoopResultBuilder]: For program point L180(lines 180 234) no Hoare annotation was computed. [2021-11-23 02:44:46,013 INFO L858 garLoopResultBuilder]: For program point L197(lines 197 207) no Hoare annotation was computed. [2021-11-23 02:44:46,013 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 02:44:46,014 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 221) no Hoare annotation was computed. [2021-11-23 02:44:46,014 INFO L854 garLoopResultBuilder]: At program point L202(lines 167 235) the Hoare annotation is: (let ((.cse0 (= (select (select |#memory_int| |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.base|) (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset| 492)) 0))) (or (and (= |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1| 0) .cse0 (= ~Id_MCDC_93~0 0)) (and (<= |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1| 1) (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= 1 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1|) (<= ~Id_MCDC_93~0 1) .cse0) (let ((.cse1 (mod (+ |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1| 4294967295) 4294967296))) (and (< (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296) 42) (< (mod ~Id_MCDC_93~0 4294967296) 42) (< .cse1 42) .cse0 (not (= (* 12 .cse1) 492)))))) [2021-11-23 02:44:46,014 INFO L861 garLoopResultBuilder]: At program point L233(lines 133 237) the Hoare annotation is: true [2021-11-23 02:44:46,018 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1] [2021-11-23 02:44:46,019 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:44:46,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:44:46 BoogieIcfgContainer [2021-11-23 02:44:46,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:44:46,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:44:46,036 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:44:46,037 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:44:46,037 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:33" (3/4) ... [2021-11-23 02:44:46,040 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 02:44:46,054 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-11-23 02:44:46,055 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-23 02:44:46,056 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 02:44:46,057 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 02:44:46,058 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 02:44:46,285 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:44:46,285 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:44:46,285 INFO L158 Benchmark]: Toolchain (without parser) took 14873.27ms. Allocated memory was 96.5MB in the beginning and 262.1MB in the end (delta: 165.7MB). Free memory was 66.2MB in the beginning and 198.0MB in the end (delta: -131.8MB). Peak memory consumption was 146.1MB. Max. memory is 16.1GB. [2021-11-23 02:44:46,286 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 96.5MB. Free memory is still 60.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:44:46,286 INFO L158 Benchmark]: CACSL2BoogieTranslator took 416.28ms. Allocated memory is still 96.5MB. Free memory was 66.0MB in the beginning and 67.9MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:44:46,286 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.96ms. Allocated memory is still 96.5MB. Free memory was 67.9MB in the beginning and 64.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:44:46,287 INFO L158 Benchmark]: Boogie Preprocessor took 97.99ms. Allocated memory is still 96.5MB. Free memory was 64.4MB in the beginning and 61.2MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:44:46,287 INFO L158 Benchmark]: RCFGBuilder took 1012.48ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 61.2MB in the beginning and 96.4MB in the end (delta: -35.2MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2021-11-23 02:44:46,288 INFO L158 Benchmark]: TraceAbstraction took 12996.20ms. Allocated memory was 123.7MB in the beginning and 262.1MB in the end (delta: 138.4MB). Free memory was 96.4MB in the beginning and 116.4MB in the end (delta: -20.0MB). Peak memory consumption was 118.4MB. Max. memory is 16.1GB. [2021-11-23 02:44:46,288 INFO L158 Benchmark]: Witness Printer took 248.61ms. Allocated memory is still 262.1MB. Free memory was 116.4MB in the beginning and 198.0MB in the end (delta: -81.6MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2021-11-23 02:44:46,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 96.5MB. Free memory is still 60.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 416.28ms. Allocated memory is still 96.5MB. Free memory was 66.0MB in the beginning and 67.9MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.96ms. Allocated memory is still 96.5MB. Free memory was 67.9MB in the beginning and 64.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 97.99ms. Allocated memory is still 96.5MB. Free memory was 64.4MB in the beginning and 61.2MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1012.48ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 61.2MB in the beginning and 96.4MB in the end (delta: -35.2MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. * TraceAbstraction took 12996.20ms. Allocated memory was 123.7MB in the beginning and 262.1MB in the end (delta: 138.4MB). Free memory was 96.4MB in the beginning and 116.4MB in the end (delta: -20.0MB). Peak memory consumption was 118.4MB. Max. memory is 16.1GB. * Witness Printer took 248.61ms. Allocated memory is still 262.1MB. Free memory was 116.4MB in the beginning and 198.0MB in the end (delta: -81.6MB). Peak memory consumption was 30.6MB. 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: 221]: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.9s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 122 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 122 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1 IncrementalHoareTripleChecker+Unchecked, 67 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 195 IncrementalHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 21 mSDtfsCounter, 195 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 87 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 31, 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, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 11 NumberOfFragments, 83 HoareAnnotationTreeSize, 2 FomulaSimplifications, 12 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 230 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 85 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 117 ConstructedInterpolants, 16 QuantifiedInterpolants, 1329 SizeOfPredicates, 12 NumberOfNonLiveVariables, 780 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 45/135 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: 167]: Loop Invariant Derived loop invariant: (((Id_MCDC_89__Id_MCDC_96 == 0 && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && Id_MCDC_93 == 0) || ((((Id_MCDC_89__Id_MCDC_96 <= 1 && 0 < Id_MCDC_93 / 4294967296 + 1) && 1 <= Id_MCDC_89__Id_MCDC_96) && Id_MCDC_93 <= 1) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0)) || (((((Id_MCDC_93 + 4294967295) % 4294967296 < 42 && Id_MCDC_93 % 4294967296 < 42) && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && !(12 * ((Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296) == 492)) - InvariantResult [Line: 133]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-23 02:44:46,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70aba63d-a04b-46bb-b0b8-b64c963fe11c/bin/utaipan-EQgc7hIp5V/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