./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS --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 64bit --witnessprinter.graph.data.programhash 7352d046b5316fb81d2468cb9250595960c3288e5e43adc5f64e1431a57b211a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:58:44,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:58:44,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:58:44,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:58:44,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:58:44,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:58:44,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:58:44,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:58:44,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:58:44,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:58:44,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:58:44,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:58:44,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:58:44,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:58:44,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:58:44,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:58:44,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:58:44,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:58:44,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:58:44,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:58:44,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:58:44,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:58:44,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:58:44,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:58:44,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:58:44,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:58:44,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:58:44,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:58:44,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:58:44,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:58:44,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:58:44,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:58:44,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:58:44,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:58:44,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:58:44,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:58:44,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:58:44,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:58:44,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:58:44,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:58:44,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:58:44,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:58:44,884 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:58:44,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:58:44,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:58:44,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:58:44,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:58:44,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:58:44,886 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:58:44,886 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:58:44,886 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:58:44,887 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:58:44,887 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:58:44,887 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:58:44,887 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:58:44,887 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:58:44,888 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:58:44,888 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:58:44,888 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:58:44,888 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:58:44,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:58:44,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:58:44,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:58:44,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:58:44,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:58:44,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:58:44,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:58:44,891 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:58:44,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:58:44,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:58:44,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:58:44,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:58:44,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:58:44,892 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:58:44,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:58:44,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:58:44,893 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:58:44,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:58:44,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:58:44,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:58:44,893 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7352d046b5316fb81d2468cb9250595960c3288e5e43adc5f64e1431a57b211a [2022-11-19 06:58:45,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:58:45,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:58:45,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:58:45,232 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:58:45,232 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:58:45,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-19 06:58:45,322 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/data/fce3d1b55/4b30429b43584a2aa0cfc3ecf1f8d6a4/FLAGdc244ba0a [2022-11-19 06:58:45,959 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:58:45,963 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-19 06:58:45,990 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/data/fce3d1b55/4b30429b43584a2aa0cfc3ecf1f8d6a4/FLAGdc244ba0a [2022-11-19 06:58:46,204 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/data/fce3d1b55/4b30429b43584a2aa0cfc3ecf1f8d6a4 [2022-11-19 06:58:46,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:58:46,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:58:46,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:58:46,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:58:46,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:58:46,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:58:46" (1/1) ... [2022-11-19 06:58:46,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c442486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:46, skipping insertion in model container [2022-11-19 06:58:46,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:58:46" (1/1) ... [2022-11-19 06:58:46,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:58:46,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:58:46,550 WARN L234 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_5fd82715-4e0b-454b-9049-ba3cafddcf12/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c[1107,1120] [2022-11-19 06:58:46,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:58:46,997 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:58:47,008 WARN L234 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_5fd82715-4e0b-454b-9049-ba3cafddcf12/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c[1107,1120] [2022-11-19 06:58:47,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:58:47,161 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:58:47,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:47 WrapperNode [2022-11-19 06:58:47,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:58:47,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:58:47,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:58:47,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:58:47,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:47" (1/1) ... [2022-11-19 06:58:47,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:47" (1/1) ... [2022-11-19 06:58:47,334 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2367 [2022-11-19 06:58:47,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:58:47,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:58:47,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:58:47,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:58:47,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:47" (1/1) ... [2022-11-19 06:58:47,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:47" (1/1) ... [2022-11-19 06:58:47,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:47" (1/1) ... [2022-11-19 06:58:47,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:47" (1/1) ... [2022-11-19 06:58:47,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:47" (1/1) ... [2022-11-19 06:58:47,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:47" (1/1) ... [2022-11-19 06:58:47,429 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:47" (1/1) ... [2022-11-19 06:58:47,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:47" (1/1) ... [2022-11-19 06:58:47,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:58:47,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:58:47,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:58:47,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:58:47,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:47" (1/1) ... [2022-11-19 06:58:47,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:58:47,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:58:47,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:58:47,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:58:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:58:47,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:58:48,078 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:58:48,080 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:58:49,789 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:58:53,545 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:58:53,546 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:58:53,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:58:53 BoogieIcfgContainer [2022-11-19 06:58:53,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:58:53,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:58:53,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:58:53,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:58:53,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:58:46" (1/3) ... [2022-11-19 06:58:53,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6983082a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:58:53, skipping insertion in model container [2022-11-19 06:58:53,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:47" (2/3) ... [2022-11-19 06:58:53,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6983082a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:58:53, skipping insertion in model container [2022-11-19 06:58:53,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:58:53" (3/3) ... [2022-11-19 06:58:53,561 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-19 06:58:53,582 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:58:53,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:58:53,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:58:53,655 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@66b84358, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:58:53,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:58:53,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:58:53,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:58:53,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:53,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:58:53,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:58:53,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash 27433892, now seen corresponding path program 1 times [2022-11-19 06:58:53,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:58:53,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646468145] [2022-11-19 06:58:53,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:53,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:58:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:58:53,856 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:58:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:58:54,008 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:58:54,010 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:58:54,017 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:58:54,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:58:54,026 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 06:58:54,033 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:58:54,071 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 06:58:54,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:58:54 BoogieIcfgContainer [2022-11-19 06:58:54,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:58:54,090 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:58:54,090 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:58:54,091 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:58:54,092 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:58:53" (3/4) ... [2022-11-19 06:58:54,095 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 06:58:54,096 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:58:54,099 INFO L158 Benchmark]: Toolchain (without parser) took 7890.06ms. Allocated memory was 127.9MB in the beginning and 394.3MB in the end (delta: 266.3MB). Free memory was 87.6MB in the beginning and 126.5MB in the end (delta: -39.0MB). Peak memory consumption was 225.7MB. Max. memory is 16.1GB. [2022-11-19 06:58:54,100 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 127.9MB. Free memory is still 106.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:58:54,101 INFO L158 Benchmark]: CACSL2BoogieTranslator took 948.88ms. Allocated memory is still 127.9MB. Free memory was 87.5MB in the beginning and 55.2MB in the end (delta: 32.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-19 06:58:54,102 INFO L158 Benchmark]: Boogie Procedure Inliner took 172.04ms. Allocated memory is still 127.9MB. Free memory was 55.2MB in the beginning and 82.1MB in the end (delta: -26.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2022-11-19 06:58:54,103 INFO L158 Benchmark]: Boogie Preprocessor took 138.13ms. Allocated memory is still 127.9MB. Free memory was 82.1MB in the beginning and 72.3MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 06:58:54,108 INFO L158 Benchmark]: RCFGBuilder took 6075.04ms. Allocated memory was 127.9MB in the beginning and 394.3MB in the end (delta: 266.3MB). Free memory was 72.3MB in the beginning and 165.3MB in the end (delta: -93.0MB). Peak memory consumption was 254.0MB. Max. memory is 16.1GB. [2022-11-19 06:58:54,109 INFO L158 Benchmark]: TraceAbstraction took 534.90ms. Allocated memory is still 394.3MB. Free memory was 164.3MB in the beginning and 127.6MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-19 06:58:54,110 INFO L158 Benchmark]: Witness Printer took 6.50ms. Allocated memory is still 394.3MB. Free memory was 127.6MB in the beginning and 126.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:58:54,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 127.9MB. Free memory is still 106.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 948.88ms. Allocated memory is still 127.9MB. Free memory was 87.5MB in the beginning and 55.2MB in the end (delta: 32.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 172.04ms. Allocated memory is still 127.9MB. Free memory was 55.2MB in the beginning and 82.1MB in the end (delta: -26.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 138.13ms. Allocated memory is still 127.9MB. Free memory was 82.1MB in the beginning and 72.3MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 6075.04ms. Allocated memory was 127.9MB in the beginning and 394.3MB in the end (delta: 266.3MB). Free memory was 72.3MB in the beginning and 165.3MB in the end (delta: -93.0MB). Peak memory consumption was 254.0MB. Max. memory is 16.1GB. * TraceAbstraction took 534.90ms. Allocated memory is still 394.3MB. Free memory was 164.3MB in the beginning and 127.6MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 6.50ms. Allocated memory is still 394.3MB. Free memory was 127.6MB in the beginning and 126.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 147, overapproximation of bitwiseAnd at line 136. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L31] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 5); [L32] const SORT_7 msb_SORT_7 = (SORT_7)1 << (5 - 1); [L34] const SORT_22 mask_SORT_22 = (SORT_22)-1 >> (sizeof(SORT_22) * 8 - 32); [L35] const SORT_22 msb_SORT_22 = (SORT_22)1 << (32 - 1); [L37] const SORT_7 var_8 = 0; [L38] const SORT_7 var_11 = 16; [L39] const SORT_1 var_15 = 1; [L40] const SORT_1 var_19 = 0; [L41] const SORT_22 var_23 = 0; [L42] const SORT_22 var_24 = 15; [L43] const SORT_22 var_74 = 14; [L44] const SORT_22 var_92 = 13; [L45] const SORT_22 var_110 = 12; [L46] const SORT_22 var_128 = 11; [L47] const SORT_22 var_146 = 10; [L48] const SORT_22 var_164 = 9; [L49] const SORT_22 var_182 = 8; [L50] const SORT_22 var_200 = 7; [L51] const SORT_22 var_218 = 6; [L52] const SORT_22 var_236 = 5; [L53] const SORT_22 var_254 = 4; [L54] const SORT_22 var_272 = 3; [L55] const SORT_22 var_290 = 2; [L56] const SORT_22 var_308 = 1; [L57] const SORT_4 var_347 = 0; [L58] const SORT_22 var_351 = 16; [L60] SORT_1 input_2; [L61] SORT_1 input_3; [L62] SORT_4 input_5; [L63] SORT_1 input_6; [L64] SORT_1 input_386; [L65] SORT_4 input_388; [L66] SORT_1 input_404; [L67] SORT_4 input_408; [L69] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L70] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L71] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L72] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L73] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_66 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_345 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_4 state_348 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L90] SORT_7 init_10_arg_1 = var_8; [L91] state_9 = init_10_arg_1 [L92] SORT_1 init_21_arg_1 = var_19; [L93] state_20 = init_21_arg_1 [L94] SORT_1 init_26_arg_1 = var_19; [L95] state_25 = init_26_arg_1 [L96] SORT_1 init_28_arg_1 = var_19; [L97] state_27 = init_28_arg_1 [L98] SORT_1 init_31_arg_1 = var_19; [L99] state_30 = init_31_arg_1 [L100] SORT_1 init_33_arg_1 = var_19; [L101] state_32 = init_33_arg_1 [L102] SORT_1 init_37_arg_1 = var_19; [L103] state_36 = init_37_arg_1 [L104] SORT_1 init_39_arg_1 = var_19; [L105] state_38 = init_39_arg_1 [L106] SORT_1 init_42_arg_1 = var_19; [L107] state_41 = init_42_arg_1 [L108] SORT_1 init_44_arg_1 = var_19; [L109] state_43 = init_44_arg_1 [L110] SORT_1 init_49_arg_1 = var_19; [L111] state_48 = init_49_arg_1 [L112] SORT_1 init_51_arg_1 = var_19; [L113] state_50 = init_51_arg_1 [L114] SORT_1 init_54_arg_1 = var_19; [L115] state_53 = init_54_arg_1 [L116] SORT_1 init_56_arg_1 = var_19; [L117] state_55 = init_56_arg_1 [L118] SORT_1 init_60_arg_1 = var_19; [L119] state_59 = init_60_arg_1 [L120] SORT_1 init_62_arg_1 = var_19; [L121] state_61 = init_62_arg_1 [L122] SORT_1 init_65_arg_1 = var_19; [L123] state_64 = init_65_arg_1 [L124] SORT_1 init_67_arg_1 = var_19; [L125] state_66 = init_67_arg_1 [L126] SORT_1 init_346_arg_1 = var_19; [L127] state_345 = init_346_arg_1 [L128] SORT_4 init_349_arg_1 = var_347; [L129] state_348 = init_349_arg_1 VAL [init_10_arg_1=0, init_21_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_346_arg_1=0, init_349_arg_1=0, init_37_arg_1=0, init_39_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_49_arg_1=0, init_51_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_65_arg_1=0, init_67_arg_1=0, mask_SORT_1=1, mask_SORT_22=4294967295, mask_SORT_4=15, mask_SORT_7=31, msb_SORT_1=1, msb_SORT_22=2147483648, msb_SORT_4=8, msb_SORT_7=16, state_20=0, state_25=0, state_27=0, state_30=0, state_32=0, state_345=0, state_348=0, state_36=0, state_38=0, state_41=0, state_43=0, state_48=0, state_50=0, state_53=0, state_55=0, state_59=0, state_61=0, state_64=0, state_66=0, state_9=0, var_11=16, var_110=12, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_23=0, var_236=5, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L132] input_2 = __VERIFIER_nondet_uchar() [L133] input_3 = __VERIFIER_nondet_uchar() [L134] input_5 = __VERIFIER_nondet_uchar() [L135] input_6 = __VERIFIER_nondet_uchar() [L136] input_6 = input_6 & mask_SORT_1 [L137] input_386 = __VERIFIER_nondet_uchar() [L138] input_388 = __VERIFIER_nondet_uchar() [L139] input_404 = __VERIFIER_nondet_uchar() [L140] input_408 = __VERIFIER_nondet_uchar() [L143] SORT_7 var_12_arg_0 = state_9; [L144] SORT_7 var_12_arg_1 = var_11; [L145] SORT_1 var_12 = var_12_arg_0 <= var_12_arg_1; [L146] SORT_1 var_16_arg_0 = var_12; [L147] SORT_1 var_16 = ~var_16_arg_0; [L148] SORT_1 var_17_arg_0 = var_15; [L149] SORT_1 var_17_arg_1 = var_16; [L150] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L151] var_17 = var_17 & mask_SORT_1 [L152] SORT_1 bad_18_arg_0 = var_17; [L153] CALL __VERIFIER_assert(!(bad_18_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 [2022-11-19 06:58:54,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS --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 64bit --witnessprinter.graph.data.programhash 7352d046b5316fb81d2468cb9250595960c3288e5e43adc5f64e1431a57b211a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:58:56,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:58:56,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:58:56,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:58:56,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:58:56,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:58:56,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:58:56,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:58:56,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:58:56,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:58:56,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:58:56,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:58:56,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:58:56,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:58:56,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:58:56,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:58:56,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:58:56,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:58:56,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:58:56,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:58:56,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:58:56,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:58:56,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:58:56,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:58:56,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:58:56,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:58:56,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:58:56,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:58:56,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:58:56,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:58:56,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:58:56,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:58:56,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:58:56,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:58:56,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:58:56,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:58:56,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:58:56,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:58:56,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:58:56,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:58:56,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:58:56,613 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 06:58:56,666 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:58:56,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:58:56,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:58:56,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:58:56,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:58:56,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:58:56,670 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:58:56,670 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:58:56,670 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:58:56,671 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:58:56,672 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:58:56,672 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:58:56,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:58:56,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:58:56,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:58:56,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:58:56,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:58:56,675 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:58:56,676 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:58:56,676 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:58:56,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:58:56,676 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:58:56,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:58:56,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:58:56,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:58:56,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:58:56,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:58:56,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:58:56,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:58:56,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:58:56,679 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:58:56,680 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:58:56,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:58:56,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:58:56,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:58:56,681 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_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7352d046b5316fb81d2468cb9250595960c3288e5e43adc5f64e1431a57b211a [2022-11-19 06:58:57,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:58:57,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:58:57,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:58:57,133 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:58:57,134 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:58:57,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-19 06:58:57,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/data/ee3bea67c/409a38de4b5c4a9d8912b47d930a2bc3/FLAGeb80ce8c8 [2022-11-19 06:58:57,885 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:58:57,886 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-19 06:58:57,910 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/data/ee3bea67c/409a38de4b5c4a9d8912b47d930a2bc3/FLAGeb80ce8c8 [2022-11-19 06:58:58,047 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/data/ee3bea67c/409a38de4b5c4a9d8912b47d930a2bc3 [2022-11-19 06:58:58,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:58:58,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:58:58,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:58:58,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:58:58,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:58:58,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:58:58" (1/1) ... [2022-11-19 06:58:58,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f80c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:58, skipping insertion in model container [2022-11-19 06:58:58,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:58:58" (1/1) ... [2022-11-19 06:58:58,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:58:58,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:58:58,366 WARN L234 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_5fd82715-4e0b-454b-9049-ba3cafddcf12/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c[1107,1120] [2022-11-19 06:58:58,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:58:58,767 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:58:58,779 WARN L234 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_5fd82715-4e0b-454b-9049-ba3cafddcf12/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c[1107,1120] [2022-11-19 06:58:58,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:58:58,942 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:58:58,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:58 WrapperNode [2022-11-19 06:58:58,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:58:58,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:58:58,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:58:58,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:58:58,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:58" (1/1) ... [2022-11-19 06:58:59,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:58" (1/1) ... [2022-11-19 06:58:59,117 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1884 [2022-11-19 06:58:59,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:58:59,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:58:59,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:58:59,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:58:59,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:58" (1/1) ... [2022-11-19 06:58:59,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:58" (1/1) ... [2022-11-19 06:58:59,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:58" (1/1) ... [2022-11-19 06:58:59,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:58" (1/1) ... [2022-11-19 06:58:59,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:58" (1/1) ... [2022-11-19 06:58:59,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:58" (1/1) ... [2022-11-19 06:58:59,189 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:58" (1/1) ... [2022-11-19 06:58:59,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:58" (1/1) ... [2022-11-19 06:58:59,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:58:59,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:58:59,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:58:59,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:58:59,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:58" (1/1) ... [2022-11-19 06:58:59,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:58:59,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:58:59,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:58:59,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:58:59,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:58:59,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:58:59,818 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:58:59,821 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:59:02,861 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:59:02,869 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:59:02,870 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:59:02,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:59:02 BoogieIcfgContainer [2022-11-19 06:59:02,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:59:02,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:59:02,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:59:02,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:59:02,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:58:58" (1/3) ... [2022-11-19 06:59:02,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62145961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:59:02, skipping insertion in model container [2022-11-19 06:59:02,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:58" (2/3) ... [2022-11-19 06:59:02,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62145961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:59:02, skipping insertion in model container [2022-11-19 06:59:02,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:59:02" (3/3) ... [2022-11-19 06:59:02,882 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-19 06:59:02,904 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:59:02,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:59:02,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:59:02,983 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@44f1a7a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:59:02,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:59:02,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:59:02,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:59:02,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:02,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:59:02,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:59:03,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:03,005 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 06:59:03,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:59:03,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755614561] [2022-11-19 06:59:03,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:03,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:59:03,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:59:03,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:59:03,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 06:59:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:03,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-19 06:59:03,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:03,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:03,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:59:03,722 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:59:03,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755614561] [2022-11-19 06:59:03,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755614561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:03,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:03,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:59:03,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904931570] [2022-11-19 06:59:03,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:03,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:59:03,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:59:03,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:59:03,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:59:03,757 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:59:04,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:04,023 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 06:59:04,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:59:04,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 06:59:04,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:04,033 INFO L225 Difference]: With dead ends: 20 [2022-11-19 06:59:04,034 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 06:59:04,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:59:04,040 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:04,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:59:04,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 06:59:04,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 06:59:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:59:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 06:59:04,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 06:59:04,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:04,072 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 06:59:04,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:59:04,072 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 06:59:04,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 06:59:04,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:04,073 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 06:59:04,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:04,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:59:04,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:59:04,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:04,280 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 06:59:04,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:59:04,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191581157] [2022-11-19 06:59:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:04,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:59:04,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:59:04,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:59:04,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 06:59:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:05,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-19 06:59:05,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:05,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:05,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:59:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:05,975 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:59:05,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191581157] [2022-11-19 06:59:05,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191581157] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:59:05,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1299931683] [2022-11-19 06:59:05,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:05,977 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:59:05,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:59:05,980 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:59:05,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 06:59:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:07,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-19 06:59:07,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:08,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:59:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:08,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1299931683] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:59:08,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206102009] [2022-11-19 06:59:08,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:08,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:59:08,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:59:08,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:59:08,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:59:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:09,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-19 06:59:09,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:09,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:09,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:59:09,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:09,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206102009] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:59:09,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:59:09,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-19 06:59:09,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744985025] [2022-11-19 06:59:09,827 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:59:09,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 06:59:09,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:59:09,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 06:59:09,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:59:09,832 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:59:10,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:10,115 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 06:59:10,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:59:10,116 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 [2022-11-19 06:59:10,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:10,117 INFO L225 Difference]: With dead ends: 16 [2022-11-19 06:59:10,117 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 06:59:10,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-19 06:59:10,119 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:10,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 21 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 12 Unchecked, 0.2s Time] [2022-11-19 06:59:10,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 06:59:10,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-19 06:59:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:59:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 06:59:10,124 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-19 06:59:10,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:10,125 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 06:59:10,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:59:10,125 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 06:59:10,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 06:59:10,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:10,126 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 06:59:10,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:10,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:10,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-19 06:59:10,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:59:10,742 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:59:10,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:10,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-19 06:59:10,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:59:10,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615752652] [2022-11-19 06:59:10,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:59:10,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:59:10,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:59:10,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:59:10,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd82715-4e0b-454b-9049-ba3cafddcf12/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 06:59:12,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:59:12,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:59:12,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 3450 conjuncts, 351 conjunts are in the unsatisfiable core [2022-11-19 06:59:12,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:16,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:02:05,407 WARN L233 SmtUtils]: Spent 2.71m on a formula simplification. DAG size of input: 524 DAG size of output: 493 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)