./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.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_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/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_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/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_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/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 9208ea73ca407228dec2798c27d3413866611c30e195ca4077cc8062fadd33bb --- 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 05:54:47,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 05:54:47,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 05:54:47,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 05:54:47,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 05:54:47,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 05:54:47,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 05:54:47,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 05:54:47,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 05:54:47,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 05:54:47,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 05:54:47,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 05:54:47,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 05:54:47,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 05:54:47,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 05:54:47,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 05:54:47,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 05:54:47,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 05:54:47,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 05:54:47,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 05:54:47,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 05:54:47,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 05:54:47,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 05:54:47,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 05:54:47,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 05:54:47,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 05:54:47,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 05:54:47,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 05:54:47,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 05:54:47,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 05:54:47,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 05:54:47,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 05:54:47,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 05:54:47,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 05:54:47,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 05:54:47,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 05:54:47,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 05:54:47,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 05:54:47,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 05:54:47,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 05:54:47,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 05:54:47,943 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 05:54:47,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 05:54:47,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 05:54:47,987 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 05:54:47,987 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 05:54:47,988 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 05:54:47,988 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 05:54:47,988 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 05:54:47,989 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 05:54:47,989 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 05:54:47,989 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 05:54:47,990 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 05:54:47,990 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 05:54:47,990 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 05:54:47,990 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 05:54:47,991 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 05:54:47,991 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 05:54:47,991 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 05:54:47,991 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 05:54:47,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 05:54:47,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 05:54:47,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 05:54:47,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 05:54:47,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 05:54:47,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 05:54:47,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 05:54:47,993 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 05:54:47,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 05:54:47,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 05:54:47,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 05:54:47,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 05:54:47,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 05:54:47,996 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 05:54:47,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 05:54:47,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 05:54:47,996 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 05:54:47,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 05:54:47,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 05:54:47,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 05:54:47,997 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_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9208ea73ca407228dec2798c27d3413866611c30e195ca4077cc8062fadd33bb [2022-11-19 05:54:48,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 05:54:48,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 05:54:48,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 05:54:48,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 05:54:48,255 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 05:54:48,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c [2022-11-19 05:54:48,339 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/data/f182e6f81/1ed5670b07eb408e8bda5b667bdbc5e2/FLAG6ca190cda [2022-11-19 05:54:48,996 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 05:54:48,998 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c [2022-11-19 05:54:49,018 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/data/f182e6f81/1ed5670b07eb408e8bda5b667bdbc5e2/FLAG6ca190cda [2022-11-19 05:54:49,216 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/data/f182e6f81/1ed5670b07eb408e8bda5b667bdbc5e2 [2022-11-19 05:54:49,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 05:54:49,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 05:54:49,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 05:54:49,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 05:54:49,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 05:54:49,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:54:49" (1/1) ... [2022-11-19 05:54:49,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4536e3ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:49, skipping insertion in model container [2022-11-19 05:54:49,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:54:49" (1/1) ... [2022-11-19 05:54:49,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 05:54:49,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 05:54:49,545 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_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c[1014,1027] [2022-11-19 05:54:49,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 05:54:49,859 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 05:54:49,873 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_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c[1014,1027] [2022-11-19 05:54:50,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 05:54:50,121 INFO L208 MainTranslator]: Completed translation [2022-11-19 05:54:50,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:50 WrapperNode [2022-11-19 05:54:50,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 05:54:50,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 05:54:50,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 05:54:50,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 05:54:50,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:50" (1/1) ... [2022-11-19 05:54:50,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:50" (1/1) ... [2022-11-19 05:54:50,358 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2265 [2022-11-19 05:54:50,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 05:54:50,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 05:54:50,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 05:54:50,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 05:54:50,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:50" (1/1) ... [2022-11-19 05:54:50,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:50" (1/1) ... [2022-11-19 05:54:50,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:50" (1/1) ... [2022-11-19 05:54:50,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:50" (1/1) ... [2022-11-19 05:54:50,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:50" (1/1) ... [2022-11-19 05:54:50,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:50" (1/1) ... [2022-11-19 05:54:50,508 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:50" (1/1) ... [2022-11-19 05:54:50,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:50" (1/1) ... [2022-11-19 05:54:50,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 05:54:50,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 05:54:50,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 05:54:50,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 05:54:50,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:50" (1/1) ... [2022-11-19 05:54:50,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 05:54:50,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 05:54:50,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 05:54:50,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 05:54:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 05:54:50,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 05:54:51,002 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 05:54:51,005 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 05:54:56,539 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 05:55:03,679 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 05:55:03,680 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 05:55:03,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:55:03 BoogieIcfgContainer [2022-11-19 05:55:03,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 05:55:03,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 05:55:03,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 05:55:03,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 05:55:03,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:54:49" (1/3) ... [2022-11-19 05:55:03,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f62e7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:55:03, skipping insertion in model container [2022-11-19 05:55:03,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:50" (2/3) ... [2022-11-19 05:55:03,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f62e7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:55:03, skipping insertion in model container [2022-11-19 05:55:03,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:55:03" (3/3) ... [2022-11-19 05:55:03,692 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.fischer.2.prop1-func-interl.c [2022-11-19 05:55:03,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 05:55:03,711 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 05:55:03,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 05:55:03,764 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;@53c096c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 05:55:03,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 05:55:03,769 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 05:55:03,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 05:55:03,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:55:03,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 05:55:03,777 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:55:03,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:55:03,782 INFO L85 PathProgramCache]: Analyzing trace with hash 45595439, now seen corresponding path program 1 times [2022-11-19 05:55:03,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 05:55:03,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110600411] [2022-11-19 05:55:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:55:03,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 05:55:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 05:55:04,166 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 05:55:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 05:55:04,449 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 05:55:04,451 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 05:55:04,453 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 05:55:04,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 05:55:04,459 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 05:55:04,463 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 05:55:04,486 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 05:55:04,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:55:04 BoogieIcfgContainer [2022-11-19 05:55:04,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 05:55:04,500 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 05:55:04,500 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 05:55:04,500 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 05:55:04,501 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:55:03" (3/4) ... [2022-11-19 05:55:04,504 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 05:55:04,504 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 05:55:04,505 INFO L158 Benchmark]: Toolchain (without parser) took 15285.23ms. Allocated memory was 134.2MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 97.2MB in the beginning and 794.5MB in the end (delta: -697.3MB). Peak memory consumption was 435.2MB. Max. memory is 16.1GB. [2022-11-19 05:55:04,506 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 65.5MB in the end (delta: 25.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 05:55:04,507 INFO L158 Benchmark]: CACSL2BoogieTranslator took 895.47ms. Allocated memory is still 134.2MB. Free memory was 96.9MB in the beginning and 69.4MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-19 05:55:04,507 INFO L158 Benchmark]: Boogie Procedure Inliner took 236.59ms. Allocated memory is still 134.2MB. Free memory was 69.4MB in the beginning and 97.4MB in the end (delta: -28.1MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2022-11-19 05:55:04,508 INFO L158 Benchmark]: Boogie Preprocessor took 178.79ms. Allocated memory is still 134.2MB. Free memory was 97.4MB in the beginning and 90.3MB in the end (delta: 7.1MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2022-11-19 05:55:04,509 INFO L158 Benchmark]: RCFGBuilder took 13143.20ms. Allocated memory was 134.2MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 90.3MB in the beginning and 850.1MB in the end (delta: -759.8MB). Peak memory consumption was 674.8MB. Max. memory is 16.1GB. [2022-11-19 05:55:04,509 INFO L158 Benchmark]: TraceAbstraction took 814.60ms. Allocated memory is still 1.3GB. Free memory was 850.1MB in the beginning and 794.5MB in the end (delta: 55.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-11-19 05:55:04,510 INFO L158 Benchmark]: Witness Printer took 4.29ms. Allocated memory is still 1.3GB. Free memory is still 794.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 05:55:04,513 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 65.5MB in the end (delta: 25.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 895.47ms. Allocated memory is still 134.2MB. Free memory was 96.9MB in the beginning and 69.4MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 236.59ms. Allocated memory is still 134.2MB. Free memory was 69.4MB in the beginning and 97.4MB in the end (delta: -28.1MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 178.79ms. Allocated memory is still 134.2MB. Free memory was 97.4MB in the beginning and 90.3MB in the end (delta: 7.1MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * RCFGBuilder took 13143.20ms. Allocated memory was 134.2MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 90.3MB in the beginning and 850.1MB in the end (delta: -759.8MB). Peak memory consumption was 674.8MB. Max. memory is 16.1GB. * TraceAbstraction took 814.60ms. Allocated memory is still 1.3GB. Free memory was 850.1MB in the beginning and 794.5MB in the end (delta: 55.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Witness Printer took 4.29ms. Allocated memory is still 1.3GB. Free memory is still 794.5MB. 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 221, overapproximation of bitwiseAnd at line 149. 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_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_16 = 0; [L39] const SORT_4 var_53 = 1; [L40] const SORT_4 var_54 = 0; [L41] const SORT_2 var_66 = 0; [L42] const SORT_2 var_68 = 4; [L43] const SORT_2 var_71 = 3; [L44] const SORT_2 var_74 = 2; [L45] const SORT_2 var_77 = 1; [L46] const SORT_2 var_87 = 255; [L47] const SORT_3 var_91 = 0; [L48] const SORT_4 var_95 = 255; [L50] SORT_1 input_65; [L51] SORT_1 input_67; [L52] SORT_1 input_69; [L53] SORT_1 input_70; [L54] SORT_1 input_72; [L55] SORT_1 input_73; [L56] SORT_1 input_75; [L57] SORT_1 input_76; [L58] SORT_1 input_88; [L59] SORT_1 input_89; [L60] SORT_1 input_90; [L61] SORT_1 input_107; [L62] SORT_1 input_108; [L63] SORT_1 input_123; [L64] SORT_1 input_124; [L65] SORT_1 input_139; [L66] SORT_1 input_140; [L67] SORT_1 input_157; [L68] SORT_1 input_165; [L69] SORT_1 input_173; [L70] SORT_1 input_181; [L71] SORT_1 input_189; [L72] SORT_1 input_197; [L73] SORT_1 input_205; [L74] SORT_1 input_213; [L76] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L79] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L80] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L81] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_2 init_7_arg_1 = var_5; [L101] state_6 = init_7_arg_1 [L102] SORT_2 init_9_arg_1 = var_5; [L103] state_8 = init_9_arg_1 [L104] SORT_2 init_11_arg_1 = var_5; [L105] state_10 = init_11_arg_1 [L106] SORT_2 init_13_arg_1 = var_5; [L107] state_12 = init_13_arg_1 [L108] SORT_2 init_15_arg_1 = var_5; [L109] state_14 = init_15_arg_1 [L110] SORT_1 init_18_arg_1 = var_16; [L111] state_17 = init_18_arg_1 [L112] SORT_1 init_20_arg_1 = var_16; [L113] state_19 = init_20_arg_1 [L114] SORT_1 init_22_arg_1 = var_16; [L115] state_21 = init_22_arg_1 [L116] SORT_1 init_24_arg_1 = var_16; [L117] state_23 = init_24_arg_1 [L118] SORT_1 init_26_arg_1 = var_16; [L119] state_25 = init_26_arg_1 [L120] SORT_1 init_28_arg_1 = var_16; [L121] state_27 = init_28_arg_1 [L122] SORT_1 init_30_arg_1 = var_16; [L123] state_29 = init_30_arg_1 [L124] SORT_1 init_32_arg_1 = var_16; [L125] state_31 = init_32_arg_1 [L126] SORT_1 init_34_arg_1 = var_16; [L127] state_33 = init_34_arg_1 [L128] SORT_1 init_36_arg_1 = var_16; [L129] state_35 = init_36_arg_1 [L130] SORT_1 init_38_arg_1 = var_16; [L131] state_37 = init_38_arg_1 [L132] SORT_1 init_40_arg_1 = var_16; [L133] state_39 = init_40_arg_1 [L134] SORT_1 init_42_arg_1 = var_16; [L135] state_41 = init_42_arg_1 [L136] SORT_1 init_44_arg_1 = var_16; [L137] state_43 = init_44_arg_1 [L138] SORT_1 init_46_arg_1 = var_16; [L139] state_45 = init_46_arg_1 [L140] SORT_1 init_48_arg_1 = var_16; [L141] state_47 = init_48_arg_1 [L142] SORT_1 init_50_arg_1 = var_16; [L143] state_49 = init_50_arg_1 [L144] SORT_1 init_52_arg_1 = var_16; [L145] state_51 = init_52_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_17=0, state_19=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_6=0, state_8=0, var_16=0, var_5=0, var_53=1, var_54=0, var_66=0, var_68=4, var_71=3, var_74=2, var_77=1, var_87=255, var_91=0, var_95=255] [L148] input_65 = __VERIFIER_nondet_uchar() [L149] input_65 = input_65 & mask_SORT_1 [L150] input_67 = __VERIFIER_nondet_uchar() [L151] input_67 = input_67 & mask_SORT_1 [L152] input_69 = __VERIFIER_nondet_uchar() [L153] input_69 = input_69 & mask_SORT_1 [L154] input_70 = __VERIFIER_nondet_uchar() [L155] input_70 = input_70 & mask_SORT_1 [L156] input_72 = __VERIFIER_nondet_uchar() [L157] input_72 = input_72 & mask_SORT_1 [L158] input_73 = __VERIFIER_nondet_uchar() [L159] input_73 = input_73 & mask_SORT_1 [L160] input_75 = __VERIFIER_nondet_uchar() [L161] input_75 = input_75 & mask_SORT_1 [L162] input_76 = __VERIFIER_nondet_uchar() [L163] input_76 = input_76 & mask_SORT_1 [L164] input_88 = __VERIFIER_nondet_uchar() [L165] input_88 = input_88 & mask_SORT_1 [L166] input_89 = __VERIFIER_nondet_uchar() [L167] input_89 = input_89 & mask_SORT_1 [L168] input_90 = __VERIFIER_nondet_uchar() [L169] input_90 = input_90 & mask_SORT_1 [L170] input_107 = __VERIFIER_nondet_uchar() [L171] input_107 = input_107 & mask_SORT_1 [L172] input_108 = __VERIFIER_nondet_uchar() [L173] input_108 = input_108 & mask_SORT_1 [L174] input_123 = __VERIFIER_nondet_uchar() [L175] input_123 = input_123 & mask_SORT_1 [L176] input_124 = __VERIFIER_nondet_uchar() [L177] input_124 = input_124 & mask_SORT_1 [L178] input_139 = __VERIFIER_nondet_uchar() [L179] input_139 = input_139 & mask_SORT_1 [L180] input_140 = __VERIFIER_nondet_uchar() [L181] input_140 = input_140 & mask_SORT_1 [L182] input_157 = __VERIFIER_nondet_uchar() [L183] input_165 = __VERIFIER_nondet_uchar() [L184] input_173 = __VERIFIER_nondet_uchar() [L185] input_181 = __VERIFIER_nondet_uchar() [L186] input_189 = __VERIFIER_nondet_uchar() [L187] input_197 = __VERIFIER_nondet_uchar() [L188] input_205 = __VERIFIER_nondet_uchar() [L189] input_213 = __VERIFIER_nondet_uchar() [L192] SORT_1 var_55_arg_0 = state_25; [L193] SORT_4 var_55_arg_1 = var_53; [L194] SORT_4 var_55_arg_2 = var_54; [L195] SORT_4 var_55 = var_55_arg_0 ? var_55_arg_1 : var_55_arg_2; [L196] SORT_1 var_56_arg_0 = state_33; [L197] SORT_4 var_56_arg_1 = var_53; [L198] SORT_4 var_56_arg_2 = var_54; [L199] SORT_4 var_56 = var_56_arg_0 ? var_56_arg_1 : var_56_arg_2; [L200] SORT_4 var_57_arg_0 = var_55; [L201] SORT_4 var_57_arg_1 = var_56; [L202] SORT_4 var_57 = var_57_arg_0 + var_57_arg_1; [L203] SORT_1 var_58_arg_0 = state_41; [L204] SORT_4 var_58_arg_1 = var_53; [L205] SORT_4 var_58_arg_2 = var_54; [L206] SORT_4 var_58 = var_58_arg_0 ? var_58_arg_1 : var_58_arg_2; [L207] SORT_4 var_59_arg_0 = var_57; [L208] SORT_4 var_59_arg_1 = var_58; [L209] SORT_4 var_59 = var_59_arg_0 + var_59_arg_1; [L210] SORT_1 var_60_arg_0 = state_49; [L211] SORT_4 var_60_arg_1 = var_53; [L212] SORT_4 var_60_arg_2 = var_54; [L213] SORT_4 var_60 = var_60_arg_0 ? var_60_arg_1 : var_60_arg_2; [L214] SORT_4 var_61_arg_0 = var_59; [L215] SORT_4 var_61_arg_1 = var_60; [L216] SORT_4 var_61 = var_61_arg_0 + var_61_arg_1; [L217] var_61 = var_61 & mask_SORT_4 [L218] SORT_4 var_62_arg_0 = var_61; [L219] SORT_4 var_62_arg_1 = var_53; [L220] SORT_1 var_62 = var_62_arg_0 <= var_62_arg_1; [L221] SORT_1 var_63_arg_0 = ~state_51; [L222] var_63_arg_0 = var_63_arg_0 & mask_SORT_1 [L223] SORT_1 var_63_arg_1 = ~var_62; [L224] var_63_arg_1 = var_63_arg_1 & mask_SORT_1 [L225] SORT_1 var_63 = var_63_arg_0 & var_63_arg_1; [L226] var_63 = var_63 & mask_SORT_1 [L227] SORT_1 bad_64_arg_0 = var_63; [L228] CALL __VERIFIER_assert(!(bad_64_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: 0.7s, 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, 0.3s 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 05:55:04,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/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_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/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_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/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_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/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 9208ea73ca407228dec2798c27d3413866611c30e195ca4077cc8062fadd33bb --- 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 05:55:06,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 05:55:06,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 05:55:06,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 05:55:06,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 05:55:06,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 05:55:06,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 05:55:06,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 05:55:06,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 05:55:06,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 05:55:06,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 05:55:06,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 05:55:06,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 05:55:06,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 05:55:06,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 05:55:06,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 05:55:06,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 05:55:06,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 05:55:06,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 05:55:06,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 05:55:06,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 05:55:06,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 05:55:06,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 05:55:06,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 05:55:06,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 05:55:06,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 05:55:06,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 05:55:06,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 05:55:06,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 05:55:06,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 05:55:06,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 05:55:06,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 05:55:06,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 05:55:06,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 05:55:06,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 05:55:06,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 05:55:06,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 05:55:06,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 05:55:06,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 05:55:06,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 05:55:06,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 05:55:06,971 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 05:55:07,011 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 05:55:07,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 05:55:07,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 05:55:07,013 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 05:55:07,014 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 05:55:07,014 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 05:55:07,015 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 05:55:07,015 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 05:55:07,015 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 05:55:07,015 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 05:55:07,016 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 05:55:07,017 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 05:55:07,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 05:55:07,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 05:55:07,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 05:55:07,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 05:55:07,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 05:55:07,019 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 05:55:07,020 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 05:55:07,020 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 05:55:07,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 05:55:07,020 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 05:55:07,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 05:55:07,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 05:55:07,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 05:55:07,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 05:55:07,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 05:55:07,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 05:55:07,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 05:55:07,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 05:55:07,023 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 05:55:07,023 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 05:55:07,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 05:55:07,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 05:55:07,024 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 05:55:07,024 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_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9208ea73ca407228dec2798c27d3413866611c30e195ca4077cc8062fadd33bb [2022-11-19 05:55:07,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 05:55:07,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 05:55:07,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 05:55:07,455 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 05:55:07,456 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 05:55:07,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c [2022-11-19 05:55:07,525 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/data/bd72c53c0/fe92aa6d7ff54dd0b29a3703428858ac/FLAGa54fbf561 [2022-11-19 05:55:08,171 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 05:55:08,171 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c [2022-11-19 05:55:08,189 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/data/bd72c53c0/fe92aa6d7ff54dd0b29a3703428858ac/FLAGa54fbf561 [2022-11-19 05:55:08,410 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/data/bd72c53c0/fe92aa6d7ff54dd0b29a3703428858ac [2022-11-19 05:55:08,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 05:55:08,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 05:55:08,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 05:55:08,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 05:55:08,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 05:55:08,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:55:08" (1/1) ... [2022-11-19 05:55:08,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1544fafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:55:08, skipping insertion in model container [2022-11-19 05:55:08,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:55:08" (1/1) ... [2022-11-19 05:55:08,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 05:55:08,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 05:55:08,652 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_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c[1014,1027] [2022-11-19 05:55:08,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 05:55:08,993 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 05:55:09,004 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_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.2.prop1-func-interl.c[1014,1027] [2022-11-19 05:55:09,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 05:55:09,215 INFO L208 MainTranslator]: Completed translation [2022-11-19 05:55:09,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:55:09 WrapperNode [2022-11-19 05:55:09,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 05:55:09,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 05:55:09,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 05:55:09,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 05:55:09,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:55:09" (1/1) ... [2022-11-19 05:55:09,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:55:09" (1/1) ... [2022-11-19 05:55:09,329 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1446 [2022-11-19 05:55:09,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 05:55:09,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 05:55:09,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 05:55:09,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 05:55:09,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:55:09" (1/1) ... [2022-11-19 05:55:09,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:55:09" (1/1) ... [2022-11-19 05:55:09,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:55:09" (1/1) ... [2022-11-19 05:55:09,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:55:09" (1/1) ... [2022-11-19 05:55:09,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:55:09" (1/1) ... [2022-11-19 05:55:09,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:55:09" (1/1) ... [2022-11-19 05:55:09,409 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:55:09" (1/1) ... [2022-11-19 05:55:09,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:55:09" (1/1) ... [2022-11-19 05:55:09,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 05:55:09,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 05:55:09,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 05:55:09,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 05:55:09,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:55:09" (1/1) ... [2022-11-19 05:55:09,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 05:55:09,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 05:55:09,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 05:55:09,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 05:55:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 05:55:09,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 05:55:10,027 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 05:55:10,044 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 05:55:12,506 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 05:55:12,513 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 05:55:12,513 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 05:55:12,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:55:12 BoogieIcfgContainer [2022-11-19 05:55:12,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 05:55:12,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 05:55:12,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 05:55:12,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 05:55:12,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:55:08" (1/3) ... [2022-11-19 05:55:12,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2618e567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:55:12, skipping insertion in model container [2022-11-19 05:55:12,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:55:09" (2/3) ... [2022-11-19 05:55:12,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2618e567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:55:12, skipping insertion in model container [2022-11-19 05:55:12,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:55:12" (3/3) ... [2022-11-19 05:55:12,524 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.fischer.2.prop1-func-interl.c [2022-11-19 05:55:12,542 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 05:55:12,542 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 05:55:12,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 05:55:12,602 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;@1f732dd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 05:55:12,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 05:55:12,605 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 05:55:12,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 05:55:12,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:55:12,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 05:55:12,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:55:12,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:55:12,615 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 05:55:12,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:55:12,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701507928] [2022-11-19 05:55:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:55:12,627 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 05:55:12,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:55:12,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/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 05:55:12,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/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 05:55:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:55:13,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-19 05:55:13,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:55:13,333 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 05:55:13,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:55:13,334 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:55:13,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701507928] [2022-11-19 05:55:13,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701507928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:55:13,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:55:13,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 05:55:13,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814569891] [2022-11-19 05:55:13,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:55:13,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 05:55:13,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 05:55:13,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 05:55:13,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 05:55:13,371 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 05:55:13,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:55:13,691 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 05:55:13,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 05:55:13,693 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 05:55:13,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:55:13,700 INFO L225 Difference]: With dead ends: 20 [2022-11-19 05:55:13,700 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 05:55:13,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 05:55:13,707 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 05:55:13,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 05:55:13,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 05:55:13,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 05:55:13,736 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 05:55:13,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 05:55:13,737 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 05:55:13,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:55:13,738 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 05:55:13,738 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 05:55:13,738 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 05:55:13,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 05:55:13,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:55:13,739 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 05:55:13,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/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 05:55:13,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/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 05:55:13,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:55:13,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:55:13,953 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 05:55:13,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 05:55:13,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128157451] [2022-11-19 05:55:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:55:13,956 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 05:55:13,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 05:55:13,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/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 05:55:13,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/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 05:55:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:55:14,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 154 conjunts are in the unsatisfiable core [2022-11-19 05:55:14,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:55:17,227 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 05:55:17,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 05:55:46,793 WARN L233 SmtUtils]: Spent 25.23s on a formula simplification that was a NOOP. DAG size: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:55:47,811 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 05:55:47,812 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 05:55:47,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128157451] [2022-11-19 05:55:47,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128157451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 05:55:47,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [284146529] [2022-11-19 05:55:47,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:55:47,818 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 05:55:47,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 05:55:47,826 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 05:55:47,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 05:55:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:55:49,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 156 conjunts are in the unsatisfiable core [2022-11-19 05:55:49,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:55:51,438 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 05:55:51,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:05:03,471 WARN L233 SmtUtils]: Spent 9.12m on a formula simplification. DAG size of input: 210 DAG size of output: 141 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:07:26,633 WARN L233 SmtUtils]: Spent 2.16m on a formula simplification that was a NOOP. DAG size: 394 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:07:30,304 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 06:07:30,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [284146529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:07:30,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98334479] [2022-11-19 06:07:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:07:30,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:07:30,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:07:30,311 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:07:30,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7f2ceed-616b-4c84-bb02-6a6aaaac2f98/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:07:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:07:31,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 159 conjunts are in the unsatisfiable core [2022-11-19 06:07:31,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:07:33,415 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 06:07:33,415 INFO L328 TraceCheckSpWp]: Computing backward predicates...