./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8934c7d58d71c9b3a06e793f6df8377fb9dcad08c89a636c2f08c1bbd4767b93 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:37:22,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:37:22,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:37:22,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:37:22,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:37:22,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:37:22,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:37:22,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:37:22,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:37:22,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:37:22,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:37:22,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:37:22,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:37:22,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:37:22,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:37:22,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:37:22,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:37:22,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:37:22,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:37:22,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:37:22,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:37:22,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:37:22,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:37:22,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:37:22,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:37:22,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:37:22,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:37:22,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:37:22,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:37:22,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:37:22,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:37:22,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:37:22,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:37:22,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:37:22,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:37:22,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:37:22,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:37:22,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:37:22,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:37:22,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:37:22,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:37:22,988 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:37:23,015 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:37:23,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:37:23,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:37:23,016 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:37:23,017 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:37:23,017 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:37:23,017 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:37:23,017 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:37:23,018 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:37:23,018 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:37:23,018 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:37:23,018 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:37:23,019 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:37:23,019 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:37:23,019 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:37:23,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:37:23,020 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:37:23,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:37:23,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:37:23,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:37:23,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:37:23,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:37:23,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:37:23,022 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:37:23,022 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:37:23,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:37:23,022 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:37:23,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:37:23,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:37:23,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:37:23,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:37:23,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:37:23,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:37:23,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:37:23,024 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:37:23,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:37:23,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:37:23,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:37:23,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:37:23,025 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_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8934c7d58d71c9b3a06e793f6df8377fb9dcad08c89a636c2f08c1bbd4767b93 [2021-11-03 04:37:23,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:37:23,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:37:23,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:37:23,317 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:37:23,317 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:37:23,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c [2021-11-03 04:37:23,409 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/data/ec895006d/94ed8fe8aedf478ba2fd9d27793d8656/FLAGfa1aefe61 [2021-11-03 04:37:23,882 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:37:23,883 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c [2021-11-03 04:37:23,896 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/data/ec895006d/94ed8fe8aedf478ba2fd9d27793d8656/FLAGfa1aefe61 [2021-11-03 04:37:24,373 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/data/ec895006d/94ed8fe8aedf478ba2fd9d27793d8656 [2021-11-03 04:37:24,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:37:24,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:37:24,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:37:24,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:37:24,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:37:24,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:37:24" (1/1) ... [2021-11-03 04:37:24,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bba546a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:24, skipping insertion in model container [2021-11-03 04:37:24,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:37:24" (1/1) ... [2021-11-03 04:37:24,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:37:24,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:37:24,557 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c[552,565] [2021-11-03 04:37:24,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:37:24,583 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:37:24,594 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound50.c[552,565] [2021-11-03 04:37:24,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:37:24,617 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:37:24,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:24 WrapperNode [2021-11-03 04:37:24,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:37:24,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:37:24,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:37:24,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:37:24,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:24" (1/1) ... [2021-11-03 04:37:24,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:24" (1/1) ... [2021-11-03 04:37:24,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:37:24,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:37:24,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:37:24,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:37:24,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:24" (1/1) ... [2021-11-03 04:37:24,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:24" (1/1) ... [2021-11-03 04:37:24,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:24" (1/1) ... [2021-11-03 04:37:24,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:24" (1/1) ... [2021-11-03 04:37:24,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:24" (1/1) ... [2021-11-03 04:37:24,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:24" (1/1) ... [2021-11-03 04:37:24,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:24" (1/1) ... [2021-11-03 04:37:24,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:37:24,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:37:24,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:37:24,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:37:24,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:24" (1/1) ... [2021-11-03 04:37:24,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:37:24,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:37:24,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:37:24,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:37:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:37:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:37:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:37:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:37:25,245 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:37:25,250 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2021-11-03 04:37:25,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:37:25 BoogieIcfgContainer [2021-11-03 04:37:25,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:37:25,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:37:25,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:37:25,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:37:25,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:37:24" (1/3) ... [2021-11-03 04:37:25,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b6f8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:37:25, skipping insertion in model container [2021-11-03 04:37:25,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:37:24" (2/3) ... [2021-11-03 04:37:25,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b6f8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:37:25, skipping insertion in model container [2021-11-03 04:37:25,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:37:25" (3/3) ... [2021-11-03 04:37:25,263 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm1_valuebound50.c [2021-11-03 04:37:25,269 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:37:25,269 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 04:37:25,312 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:37:25,318 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:37:25,319 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 04:37:25,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.8) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:37:25,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 04:37:25,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:37:25,336 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 04:37:25,337 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:37:25,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:37:25,342 INFO L85 PathProgramCache]: Analyzing trace with hash 6159882, now seen corresponding path program 1 times [2021-11-03 04:37:25,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:37:25,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806172926] [2021-11-03 04:37:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:37:25,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:37:25,452 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 04:37:25,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011663332] [2021-11-03 04:37:25,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:37:25,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:37:25,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:37:25,456 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:37:25,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:37:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:37:25,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:37:25,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:37:25,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:37:25,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:37:25,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:37:25,692 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:37:25,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806172926] [2021-11-03 04:37:25,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:37:25,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011663332] [2021-11-03 04:37:25,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011663332] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:37:25,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:37:25,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:37:25,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041421375] [2021-11-03 04:37:25,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:37:25,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:37:25,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:37:25,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:37:25,733 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.8) internal successors, (36), 25 states have internal predecessors, (36), 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 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2021-11-03 04:37:30,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:37:30,753 INFO L93 Difference]: Finished difference Result 73 states and 106 transitions. [2021-11-03 04:37:30,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:37:30,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) Word has length 4 [2021-11-03 04:37:30,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:37:30,763 INFO L225 Difference]: With dead ends: 73 [2021-11-03 04:37:30,763 INFO L226 Difference]: Without dead ends: 44 [2021-11-03 04:37:30,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:37:30,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-03 04:37:30,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2021-11-03 04:37:30,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:37:30,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-11-03 04:37:30,795 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 4 [2021-11-03 04:37:30,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:37:30,795 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-11-03 04:37:30,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2021-11-03 04:37:30,796 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-11-03 04:37:30,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 04:37:30,796 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:37:30,797 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:37:30,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-03 04:37:31,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-03 04:37:31,008 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:37:31,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:37:31,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1169568910, now seen corresponding path program 1 times [2021-11-03 04:37:31,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:37:31,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723895175] [2021-11-03 04:37:31,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:37:31,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:37:31,056 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 04:37:31,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [695955445] [2021-11-03 04:37:31,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:37:31,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:37:31,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:37:31,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:37:31,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_085f4c9f-4182-469d-a974-d599d49caa57/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process