./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/fo_test.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/fo_test.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE --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 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 ....................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/fo_test.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE --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 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 ........................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:13:45,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:13:45,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:13:45,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:13:45,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:13:45,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:13:45,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:13:45,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:13:45,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:13:45,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:13:45,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:13:45,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:13:45,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:13:45,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:13:45,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:13:45,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:13:45,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:13:45,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:13:45,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:13:45,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:13:45,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:13:45,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:13:45,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:13:45,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:13:45,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:13:45,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:13:45,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:13:45,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:13:45,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:13:45,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:13:45,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:13:45,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:13:45,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:13:45,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:13:45,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:13:45,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:13:45,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:13:45,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:13:45,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:13:45,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:13:45,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:13:45,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:13:45,905 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:13:45,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:13:45,906 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:13:45,906 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:13:45,907 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:13:45,907 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:13:45,907 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:13:45,907 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:13:45,907 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:13:45,908 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:13:45,908 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:13:45,908 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:13:45,908 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:13:45,908 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:13:45,909 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:13:45,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:13:45,909 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:13:45,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:13:45,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:13:45,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:13:45,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:13:45,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:13:45,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:13:45,911 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:13:45,911 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:13:45,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:13:45,911 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:13:45,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:13:45,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:13:45,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:13:45,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:13:45,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:13:45,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:13:45,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:13:45,913 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:13:45,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:13:45,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:13:45,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:13:45,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:13:45,914 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_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 [2021-10-24 10:13:46,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:13:46,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:13:46,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:13:46,200 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:13:46,201 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:13:46,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/ldv-regression/fo_test.i [2021-10-24 10:13:46,282 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/data/552d94e60/c8776bf0128847c1b928c0bbc94cbb37/FLAGdf2f76a3d [2021-10-24 10:13:46,812 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:13:46,818 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/sv-benchmarks/c/ldv-regression/fo_test.i [2021-10-24 10:13:46,847 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/data/552d94e60/c8776bf0128847c1b928c0bbc94cbb37/FLAGdf2f76a3d [2021-10-24 10:13:47,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/data/552d94e60/c8776bf0128847c1b928c0bbc94cbb37 [2021-10-24 10:13:47,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:13:47,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:13:47,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:13:47,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:13:47,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:13:47,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:47" (1/1) ... [2021-10-24 10:13:47,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@564f8065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:47, skipping insertion in model container [2021-10-24 10:13:47,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:47" (1/1) ... [2021-10-24 10:13:47,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:13:47,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:13:47,648 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_c1b435e4-7fcd-48b2-b11b-82ed2df05467/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-10-24 10:13:47,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:13:47,670 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:13:47,710 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_c1b435e4-7fcd-48b2-b11b-82ed2df05467/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-10-24 10:13:47,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:13:47,778 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:13:47,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:47 WrapperNode [2021-10-24 10:13:47,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:13:47,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:13:47,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:13:47,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:13:47,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:47" (1/1) ... [2021-10-24 10:13:47,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:47" (1/1) ... [2021-10-24 10:13:47,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:13:47,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:13:47,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:13:47,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:13:47,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:47" (1/1) ... [2021-10-24 10:13:47,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:47" (1/1) ... [2021-10-24 10:13:47,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:47" (1/1) ... [2021-10-24 10:13:47,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:47" (1/1) ... [2021-10-24 10:13:47,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:47" (1/1) ... [2021-10-24 10:13:47,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:47" (1/1) ... [2021-10-24 10:13:47,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:47" (1/1) ... [2021-10-24 10:13:47,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:13:47,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:13:47,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:13:47,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:13:47,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:47" (1/1) ... [2021-10-24 10:13:47,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:13:47,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:13:47,965 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:13:47,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:13:48,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:13:48,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:13:48,016 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-10-24 10:13:48,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:13:48,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:13:48,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:13:48,635 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:13:48,635 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-24 10:13:48,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:48 BoogieIcfgContainer [2021-10-24 10:13:48,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:13:48,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:13:48,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:13:48,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:13:48,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:13:47" (1/3) ... [2021-10-24 10:13:48,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1c65cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:13:48, skipping insertion in model container [2021-10-24 10:13:48,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:47" (2/3) ... [2021-10-24 10:13:48,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1c65cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:13:48, skipping insertion in model container [2021-10-24 10:13:48,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:48" (3/3) ... [2021-10-24 10:13:48,645 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2021-10-24 10:13:48,672 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:13:48,672 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:13:48,717 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:13:48,723 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 [2021-10-24 10:13:48,723 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:13:48,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) 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) [2021-10-24 10:13:48,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 10:13:48,740 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:48,741 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 10:13:48,741 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:13:48,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:48,746 INFO L82 PathProgramCache]: Analyzing trace with hash 66887, now seen corresponding path program 1 times [2021-10-24 10:13:48,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:13:48,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566504385] [2021-10-24 10:13:48,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:48,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:13:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:13:48,945 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:13:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:13:49,010 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:13:49,012 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:13:49,013 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:13:49,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:13:49,021 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:13:49,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:13:49 BoogieIcfgContainer [2021-10-24 10:13:49,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:13:49,042 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:13:49,042 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:13:49,042 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:13:49,043 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:48" (3/4) ... [2021-10-24 10:13:49,046 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:13:49,046 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:13:49,048 INFO L168 Benchmark]: Toolchain (without parser) took 1935.30 ms. Allocated memory was 119.5 MB in the beginning and 161.5 MB in the end (delta: 41.9 MB). Free memory was 83.7 MB in the beginning and 117.2 MB in the end (delta: -33.5 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:49,049 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory was 35.4 MB in the beginning and 35.4 MB in the end (delta: 45.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:13:49,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.32 ms. Allocated memory is still 119.5 MB. Free memory was 83.7 MB in the beginning and 78.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:49,050 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.19 ms. Allocated memory is still 119.5 MB. Free memory was 78.3 MB in the beginning and 75.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:49,051 INFO L168 Benchmark]: Boogie Preprocessor took 68.70 ms. Allocated memory is still 119.5 MB. Free memory was 75.8 MB in the beginning and 74.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:13:49,052 INFO L168 Benchmark]: RCFGBuilder took 705.59 ms. Allocated memory is still 119.5 MB. Free memory was 74.1 MB in the beginning and 92.7 MB in the end (delta: -18.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:49,052 INFO L168 Benchmark]: TraceAbstraction took 402.41 ms. Allocated memory was 119.5 MB in the beginning and 161.5 MB in the end (delta: 41.9 MB). Free memory was 92.2 MB in the beginning and 117.2 MB in the end (delta: -25.0 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:49,053 INFO L168 Benchmark]: Witness Printer took 4.30 ms. Allocated memory is still 161.5 MB. Free memory is still 117.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:13:49,056 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory was 35.4 MB in the beginning and 35.4 MB in the end (delta: 45.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 663.32 ms. Allocated memory is still 119.5 MB. Free memory was 83.7 MB in the beginning and 78.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.19 ms. Allocated memory is still 119.5 MB. Free memory was 78.3 MB in the beginning and 75.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.70 ms. Allocated memory is still 119.5 MB. Free memory was 75.8 MB in the beginning and 74.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 705.59 ms. Allocated memory is still 119.5 MB. Free memory was 74.1 MB in the beginning and 92.7 MB in the end (delta: -18.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 402.41 ms. Allocated memory was 119.5 MB in the beginning and 161.5 MB in the end (delta: 41.9 MB). Free memory was 92.2 MB in the beginning and 117.2 MB in the end (delta: -25.0 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.30 ms. Allocated memory is still 161.5 MB. Free memory is still 117.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 980]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 992. Possible FailurePath: [L987] int globalState = 0; [L985] return __VERIFIER_nondet_int(); [L1002] int fd = open(file,flags); [L1003] COND FALSE !(fd>0) [L1004] return fd; [L992] int file = l_open("unknown",00); [L993] void* cbuf = (void*) malloc(sizeof(char)*100); [L998] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=0] [L980] reach_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 304.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 7.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.7ms SsaConstructionTime, 57.3ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 10:13:49,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:13:51,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:13:51,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:13:51,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:13:51,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:13:51,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:13:51,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:13:51,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:13:51,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:13:51,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:13:51,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:13:51,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:13:51,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:13:51,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:13:51,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:13:51,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:13:51,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:13:51,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:13:51,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:13:51,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:13:51,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:13:51,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:13:51,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:13:51,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:13:51,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:13:51,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:13:51,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:13:51,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:13:51,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:13:51,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:13:51,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:13:51,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:13:51,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:13:51,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:13:51,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:13:51,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:13:51,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:13:51,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:13:51,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:13:51,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:13:51,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:13:51,550 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 10:13:51,595 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:13:51,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:13:51,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:13:51,597 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:13:51,597 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:13:51,597 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:13:51,598 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:13:51,598 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:13:51,599 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:13:51,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:13:51,601 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:13:51,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:13:51,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:13:51,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:13:51,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:13:51,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:13:51,603 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:13:51,603 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:13:51,603 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:13:51,603 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:13:51,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:13:51,604 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:13:51,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:13:51,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:13:51,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:13:51,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:13:51,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:13:51,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:13:51,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:13:51,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:13:51,606 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:13:51,606 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:13:51,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:13:51,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:13:51,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:13:51,607 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 [2021-10-24 10:13:51,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:13:51,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:13:51,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:13:51,970 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:13:51,971 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:13:51,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/ldv-regression/fo_test.i [2021-10-24 10:13:52,039 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/data/e8fd1160c/d2b28d5fd20c4935b9f8fb34a48b0d60/FLAG7ce346675 [2021-10-24 10:13:52,741 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:13:52,742 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/sv-benchmarks/c/ldv-regression/fo_test.i [2021-10-24 10:13:52,763 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/data/e8fd1160c/d2b28d5fd20c4935b9f8fb34a48b0d60/FLAG7ce346675 [2021-10-24 10:13:52,985 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/data/e8fd1160c/d2b28d5fd20c4935b9f8fb34a48b0d60 [2021-10-24 10:13:52,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:13:52,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:13:52,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:13:52,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:13:53,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:13:53,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:52" (1/1) ... [2021-10-24 10:13:53,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2657fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:53, skipping insertion in model container [2021-10-24 10:13:53,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:52" (1/1) ... [2021-10-24 10:13:53,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:13:53,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:13:53,481 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_c1b435e4-7fcd-48b2-b11b-82ed2df05467/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-10-24 10:13:53,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:13:53,507 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:13:53,547 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_c1b435e4-7fcd-48b2-b11b-82ed2df05467/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-10-24 10:13:53,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:13:53,617 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:13:53,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:53 WrapperNode [2021-10-24 10:13:53,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:13:53,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:13:53,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:13:53,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:13:53,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:53" (1/1) ... [2021-10-24 10:13:53,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:53" (1/1) ... [2021-10-24 10:13:53,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:13:53,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:13:53,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:13:53,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:13:53,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:53" (1/1) ... [2021-10-24 10:13:53,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:53" (1/1) ... [2021-10-24 10:13:53,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:53" (1/1) ... [2021-10-24 10:13:53,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:53" (1/1) ... [2021-10-24 10:13:53,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:53" (1/1) ... [2021-10-24 10:13:53,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:53" (1/1) ... [2021-10-24 10:13:53,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:53" (1/1) ... [2021-10-24 10:13:53,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:13:53,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:13:53,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:13:53,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:13:53,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:53" (1/1) ... [2021-10-24 10:13:53,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:13:53,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:13:53,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:13:53,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:13:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:13:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:13:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:13:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-10-24 10:13:53,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:13:53,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:13:54,376 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:13:54,377 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-24 10:13:54,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:54 BoogieIcfgContainer [2021-10-24 10:13:54,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:13:54,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:13:54,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:13:54,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:13:54,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:13:52" (1/3) ... [2021-10-24 10:13:54,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f464667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:13:54, skipping insertion in model container [2021-10-24 10:13:54,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:53" (2/3) ... [2021-10-24 10:13:54,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f464667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:13:54, skipping insertion in model container [2021-10-24 10:13:54,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:54" (3/3) ... [2021-10-24 10:13:54,387 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2021-10-24 10:13:54,392 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:13:54,392 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:13:54,451 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:13:54,460 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 [2021-10-24 10:13:54,461 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:13:54,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:54,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:13:54,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:54,489 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:13:54,490 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:13:54,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:54,496 INFO L82 PathProgramCache]: Analyzing trace with hash 88874922, now seen corresponding path program 1 times [2021-10-24 10:13:54,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:13:54,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363459567] [2021-10-24 10:13:54,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:54,515 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:13:54,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:13:54,520 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:13:54,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:13:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:13:54,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:13:54,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:13:54,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:54,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:13:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:54,851 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:13:54,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363459567] [2021-10-24 10:13:54,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363459567] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:13:54,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:13:54,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:13:54,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979026825] [2021-10-24 10:13:54,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:13:54,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:13:54,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:13:54,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:13:54,877 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-24 10:13:54,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:13:54,905 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-10-24 10:13:54,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:13:54,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) Word has length 8 [2021-10-24 10:13:54,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:13:54,915 INFO L225 Difference]: With dead ends: 24 [2021-10-24 10:13:54,915 INFO L226 Difference]: Without dead ends: 9 [2021-10-24 10:13:54,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:13:54,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-24 10:13:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-24 10:13:54,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 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) [2021-10-24 10:13:54,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-24 10:13:54,948 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-24 10:13:54,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:13:54,948 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-24 10:13:54,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-24 10:13:54,949 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-24 10:13:54,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:13:54,950 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:54,950 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:13:54,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:13:55,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:13:55,169 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:13:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:55,170 INFO L82 PathProgramCache]: Analyzing trace with hash 90721964, now seen corresponding path program 1 times [2021-10-24 10:13:55,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:13:55,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648163523] [2021-10-24 10:13:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:55,172 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:13:55,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:13:55,173 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:13:55,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:13:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:13:55,348 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:13:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:13:55,469 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 10:13:55,469 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:13:55,470 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:13:55,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:13:55,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:13:55,677 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:13:55,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:13:55 BoogieIcfgContainer [2021-10-24 10:13:55,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:13:55,722 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:13:55,722 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:13:55,723 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:13:55,723 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:54" (3/4) ... [2021-10-24 10:13:55,726 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:13:55,727 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:13:55,730 INFO L168 Benchmark]: Toolchain (without parser) took 2738.77 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 47.1 MB in the beginning and 39.4 MB in the end (delta: 7.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:55,731 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 69.2 MB. Free memory is still 49.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:13:55,732 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.70 ms. Allocated memory is still 69.2 MB. Free memory was 46.9 MB in the beginning and 36.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:55,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.21 ms. Allocated memory is still 69.2 MB. Free memory was 36.5 MB in the beginning and 33.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:55,740 INFO L168 Benchmark]: Boogie Preprocessor took 57.47 ms. Allocated memory is still 69.2 MB. Free memory was 33.8 MB in the beginning and 31.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:55,741 INFO L168 Benchmark]: RCFGBuilder took 635.37 ms. Allocated memory is still 69.2 MB. Free memory was 31.3 MB in the beginning and 37.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:55,742 INFO L168 Benchmark]: TraceAbstraction took 1339.40 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 36.8 MB in the beginning and 39.8 MB in the end (delta: -3.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:55,742 INFO L168 Benchmark]: Witness Printer took 4.45 ms. Allocated memory is still 86.0 MB. Free memory was 39.8 MB in the beginning and 39.4 MB in the end (delta: 420.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:13:55,751 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 69.2 MB. Free memory is still 49.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 628.70 ms. Allocated memory is still 69.2 MB. Free memory was 46.9 MB in the beginning and 36.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.21 ms. Allocated memory is still 69.2 MB. Free memory was 36.5 MB in the beginning and 33.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.47 ms. Allocated memory is still 69.2 MB. Free memory was 33.8 MB in the beginning and 31.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 635.37 ms. Allocated memory is still 69.2 MB. Free memory was 31.3 MB in the beginning and 37.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1339.40 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 36.8 MB in the beginning and 39.8 MB in the end (delta: -3.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.45 ms. Allocated memory is still 86.0 MB. Free memory was 39.8 MB in the beginning and 39.4 MB in the end (delta: 420.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 980]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 992. Possible FailurePath: [L987] int globalState = 0; VAL [globalState=0] [L985] return __VERIFIER_nondet_int(); [L1002] int fd = open(file,flags); [L1003] COND FALSE !(fd>0) VAL [globalState=0] [L1004] return fd; VAL [globalState=0] [L992] int file = l_open("unknown",00); [L993] void* cbuf = (void*) malloc(sizeof(char)*100); [L998] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=0] [L980] reach_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1225.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 20.0ms, AutomataDifference: 58.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13 SDtfs, 5 SDslu, 6 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 35.8ms SsaConstructionTime, 154.5ms SatisfiabilityAnalysisTime, 132.0ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 10:13:55,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b435e4-7fcd-48b2-b11b-82ed2df05467/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...