./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/array-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/array-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW --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 229f3e8ce4e3b13e76b58dc42b5f9a4638bd79f9f3aa927499d1d902ea457152 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:57:34,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:57:34,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:57:34,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:57:34,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:57:34,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:57:34,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:57:34,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:57:35,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:57:35,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:57:35,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:57:35,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:57:35,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:57:35,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:57:35,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:57:35,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:57:35,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:57:35,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:57:35,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:57:35,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:57:35,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:57:35,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:57:35,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:57:35,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:57:35,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:57:35,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:57:35,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:57:35,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:57:35,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:57:35,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:57:35,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:57:35,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:57:35,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:57:35,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:57:35,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:57:35,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:57:35,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:57:35,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:57:35,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:57:35,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:57:35,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:57:35,034 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:57:35,060 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:57:35,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:57:35,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:57:35,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:57:35,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:57:35,062 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:57:35,062 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:57:35,063 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:57:35,063 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:57:35,063 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:57:35,063 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:57:35,064 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:57:35,064 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:57:35,064 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:57:35,065 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:57:35,065 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:57:35,065 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:57:35,066 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:57:35,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:57:35,067 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:57:35,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:57:35,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:57:35,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:57:35,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:57:35,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:57:35,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:57:35,068 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:57:35,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:57:35,069 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:57:35,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:57:35,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:57:35,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:57:35,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:57:35,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:57:35,070 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:57:35,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:57:35,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:57:35,071 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:57:35,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:57:35,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:57:35,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:57:35,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 229f3e8ce4e3b13e76b58dc42b5f9a4638bd79f9f3aa927499d1d902ea457152 [2022-11-23 14:57:35,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:57:35,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:57:35,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:57:35,385 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:57:35,385 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:57:35,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/loops/array-1.c [2022-11-23 14:57:38,597 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:57:38,848 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:57:38,849 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/sv-benchmarks/c/loops/array-1.c [2022-11-23 14:57:38,854 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/data/f0b156b3f/cacf1f5782c14910821be94c6417a5b5/FLAG4e1bad8c0 [2022-11-23 14:57:38,869 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/data/f0b156b3f/cacf1f5782c14910821be94c6417a5b5 [2022-11-23 14:57:38,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:57:38,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:57:38,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:57:38,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:57:38,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:57:38,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:57:38" (1/1) ... [2022-11-23 14:57:38,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ea3303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:57:38, skipping insertion in model container [2022-11-23 14:57:38,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:57:38" (1/1) ... [2022-11-23 14:57:38,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:57:38,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:57:39,066 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/sv-benchmarks/c/loops/array-1.c[319,332] [2022-11-23 14:57:39,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:57:39,099 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:57:39,112 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/sv-benchmarks/c/loops/array-1.c[319,332] [2022-11-23 14:57:39,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:57:39,145 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:57:39,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:57:39 WrapperNode [2022-11-23 14:57:39,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:57:39,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:57:39,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:57:39,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:57:39,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:57:39" (1/1) ... [2022-11-23 14:57:39,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:57:39" (1/1) ... [2022-11-23 14:57:39,188 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2022-11-23 14:57:39,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:57:39,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:57:39,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:57:39,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:57:39,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:57:39" (1/1) ... [2022-11-23 14:57:39,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:57:39" (1/1) ... [2022-11-23 14:57:39,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:57:39" (1/1) ... [2022-11-23 14:57:39,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:57:39" (1/1) ... [2022-11-23 14:57:39,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:57:39" (1/1) ... [2022-11-23 14:57:39,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:57:39" (1/1) ... [2022-11-23 14:57:39,209 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:57:39" (1/1) ... [2022-11-23 14:57:39,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:57:39" (1/1) ... [2022-11-23 14:57:39,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:57:39,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:57:39,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:57:39,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:57:39,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:57:39" (1/1) ... [2022-11-23 14:57:39,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:57:39,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:57:39,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:57:39,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:57:39,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:57:39,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:57:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:57:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:57:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:57:39,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:57:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:57:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:57:39,400 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:57:39,402 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:57:39,559 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:57:39,608 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:57:39,609 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:57:39,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:57:39 BoogieIcfgContainer [2022-11-23 14:57:39,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:57:39,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:57:39,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:57:39,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:57:39,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:57:38" (1/3) ... [2022-11-23 14:57:39,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfb3cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:57:39, skipping insertion in model container [2022-11-23 14:57:39,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:57:39" (2/3) ... [2022-11-23 14:57:39,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfb3cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:57:39, skipping insertion in model container [2022-11-23 14:57:39,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:57:39" (3/3) ... [2022-11-23 14:57:39,620 INFO L112 eAbstractionObserver]: Analyzing ICFG array-1.c [2022-11-23 14:57:39,641 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:57:39,641 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:57:39,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:57:39,699 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b1be38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:57:39,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:57:39,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:57:39,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 14:57:39,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:57:39,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 14:57:39,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:57:39,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:57:39,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2064998, now seen corresponding path program 1 times [2022-11-23 14:57:39,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:57:39,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722499057] [2022-11-23 14:57:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:57:39,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:57:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:57:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:57:40,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:57:40,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722499057] [2022-11-23 14:57:40,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722499057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:57:40,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:57:40,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:57:40,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649716873] [2022-11-23 14:57:40,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:57:40,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:57:40,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:57:40,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:57:40,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:57:40,145 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:57:40,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:57:40,205 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2022-11-23 14:57:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:57:40,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-23 14:57:40,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:57:40,215 INFO L225 Difference]: With dead ends: 13 [2022-11-23 14:57:40,215 INFO L226 Difference]: Without dead ends: 6 [2022-11-23 14:57:40,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:57:40,223 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:57:40,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:57:40,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-11-23 14:57:40,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-11-23 14:57:40,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:57:40,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-11-23 14:57:40,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-11-23 14:57:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:57:40,260 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-11-23 14:57:40,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:57:40,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-11-23 14:57:40,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 14:57:40,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:57:40,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 14:57:40,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:57:40,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:57:40,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:57:40,264 INFO L85 PathProgramCache]: Analyzing trace with hash 64119651, now seen corresponding path program 1 times [2022-11-23 14:57:40,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:57:40,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934578344] [2022-11-23 14:57:40,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:57:40,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:57:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:57:40,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:57:40,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:57:40,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934578344] [2022-11-23 14:57:40,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934578344] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:57:40,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173492154] [2022-11-23 14:57:40,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:57:40,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:57:40,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:57:41,003 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:57:41,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:57:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:57:41,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 14:57:41,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:57:41,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:57:41,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-23 14:57:41,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:57:41,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:57:41,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2022-11-23 14:57:41,592 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:57:41,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 88 [2022-11-23 14:57:41,947 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-23 14:57:41,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 83 treesize of output 47 [2022-11-23 14:57:41,987 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-23 14:57:41,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 27 treesize of output 14 [2022-11-23 14:57:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:57:42,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173492154] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:57:42,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1516494054] [2022-11-23 14:57:42,058 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-23 14:57:42,059 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:57:42,064 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:57:42,078 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:57:42,079 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:57:42,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:57:42,163 INFO L321 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-23 14:57:42,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 42 [2022-11-23 14:57:42,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:57:42,221 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 14:57:42,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-23 14:57:42,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:57:42,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:57:42,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2022-11-23 14:57:42,420 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:57:42,763 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '71#(and (<= 0 |ULTIMATE.start_main_~#array~0#1.offset|) (= (ite (<= |ULTIMATE.start_main_~menor~0#1| |ULTIMATE.start_main_#t~mem9#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|) |ULTIMATE.start_main_~#array~0#1.offset|) |ULTIMATE.start_main_#t~mem9#1|) (= |ULTIMATE.start_main_~j~0#1| 1) (<= 0 |#NULL.offset|) (= |ULTIMATE.start_main_~SIZE~0#1| 1) (<= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:57:42,763 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:57:42,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:57:42,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-23 14:57:42,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203347344] [2022-11-23 14:57:42,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:57:42,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 14:57:42,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:57:42,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 14:57:42,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:57:42,767 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 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) [2022-11-23 14:57:42,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:57:42,870 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2022-11-23 14:57:42,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:57:42,870 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 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 5 [2022-11-23 14:57:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:57:42,871 INFO L225 Difference]: With dead ends: 7 [2022-11-23 14:57:42,871 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 14:57:42,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:57:42,873 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:57:42,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:57:42,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 14:57:42,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 14:57:42,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:57:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 14:57:42,875 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2022-11-23 14:57:42,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:57:42,876 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 14:57:42,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 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) [2022-11-23 14:57:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 14:57:42,876 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 14:57:42,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:57:42,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:57:43,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:57:43,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 14:57:43,137 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 14:57:43,137 INFO L895 garLoopResultBuilder]: At program point L21-3(lines 21 26) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#array~0#1.offset| 0))) (or (and (<= |ULTIMATE.start_main_~menor~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|) |ULTIMATE.start_main_~#array~0#1.offset|)) .cse0) (and .cse0 (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~SIZE~0#1| 1)))) [2022-11-23 14:57:43,137 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-11-23 14:57:43,138 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 14:57:43,138 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2022-11-23 14:57:43,138 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-11-23 14:57:43,138 INFO L902 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2022-11-23 14:57:43,142 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 14:57:43,145 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:57:43,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:57:43 BoogieIcfgContainer [2022-11-23 14:57:43,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:57:43,176 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:57:43,176 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:57:43,176 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:57:43,177 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:57:39" (3/4) ... [2022-11-23 14:57:43,181 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 14:57:43,192 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-23 14:57:43,192 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-23 14:57:43,192 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 14:57:43,193 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 14:57:43,247 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:57:43,247 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:57:43,248 INFO L158 Benchmark]: Toolchain (without parser) took 4373.68ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 131.3MB in the beginning and 76.9MB in the end (delta: 54.4MB). Peak memory consumption was 87.5MB. Max. memory is 16.1GB. [2022-11-23 14:57:43,248 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 163.6MB. Free memory was 108.9MB in the beginning and 108.8MB in the end (delta: 140.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:57:43,248 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.82ms. Allocated memory is still 163.6MB. Free memory was 131.3MB in the beginning and 121.0MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:57:43,249 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.94ms. Allocated memory is still 163.6MB. Free memory was 121.0MB in the beginning and 118.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:57:43,249 INFO L158 Benchmark]: Boogie Preprocessor took 23.17ms. Allocated memory is still 163.6MB. Free memory was 118.9MB in the beginning and 118.3MB in the end (delta: 675.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:57:43,250 INFO L158 Benchmark]: RCFGBuilder took 399.00ms. Allocated memory is still 163.6MB. Free memory was 118.3MB in the beginning and 105.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 14:57:43,250 INFO L158 Benchmark]: TraceAbstraction took 3561.91ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 105.0MB in the beginning and 79.0MB in the end (delta: 26.0MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. [2022-11-23 14:57:43,250 INFO L158 Benchmark]: Witness Printer took 71.33ms. Allocated memory is still 197.1MB. Free memory was 79.0MB in the beginning and 76.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:57:43,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 163.6MB. Free memory was 108.9MB in the beginning and 108.8MB in the end (delta: 140.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.82ms. Allocated memory is still 163.6MB. Free memory was 131.3MB in the beginning and 121.0MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.94ms. Allocated memory is still 163.6MB. Free memory was 121.0MB in the beginning and 118.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.17ms. Allocated memory is still 163.6MB. Free memory was 118.9MB in the beginning and 118.3MB in the end (delta: 675.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 399.00ms. Allocated memory is still 163.6MB. Free memory was 118.3MB in the beginning and 105.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3561.91ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 105.0MB in the beginning and 79.0MB in the end (delta: 26.0MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. * Witness Printer took 71.33ms. Allocated memory is still 197.1MB. Free memory was 79.0MB in the beginning and 76.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 3 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 23 HoareAnnotationTreeSize, 2 FomulaSimplifications, 3 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 103 SizeOfPredicates, 12 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 15 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: 21]: Loop Invariant Derived loop invariant: (menor <= unknown-#memory_int-unknown[array][array] && array == 0) || ((array == 0 && j == 0) && SIZE == 1) - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-23 14:57:43,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1765f95-d5dd-4fd5-914a-a4061662d778/bin/utaipan-Q6hlc19bkW/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