./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w32_d128_e0.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_c8476103-3991-4f90-b989-e42ce591d9f6/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8476103-3991-4f90-b989-e42ce591d9f6/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_c8476103-3991-4f90-b989-e42ce591d9f6/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8476103-3991-4f90-b989-e42ce591d9f6/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w32_d128_e0.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8476103-3991-4f90-b989-e42ce591d9f6/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_c8476103-3991-4f90-b989-e42ce591d9f6/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 e7886b177c92b4ec1219ee711a07359fe3486e712c9b900d7fcd9cba87c2cdbe --- 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 08:03:35,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:03:35,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:03:35,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:03:35,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:03:35,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:03:35,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:03:35,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:03:35,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:03:35,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:03:35,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:03:35,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:03:35,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:03:35,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:03:35,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:03:35,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:03:35,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:03:35,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:03:35,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:03:35,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:03:35,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:03:35,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:03:35,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:03:35,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:03:35,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:03:35,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:03:35,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:03:35,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:03:35,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:03:35,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:03:35,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:03:35,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:03:35,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:03:35,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:03:35,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:03:35,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:03:35,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:03:35,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:03:35,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:03:35,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:03:35,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:03:36,002 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8476103-3991-4f90-b989-e42ce591d9f6/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:03:36,041 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:03:36,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:03:36,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:03:36,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:03:36,048 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:03:36,048 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:03:36,048 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:03:36,048 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:03:36,048 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:03:36,049 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:03:36,050 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:03:36,050 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:03:36,050 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:03:36,050 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:03:36,050 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:03:36,051 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:03:36,051 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:03:36,051 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:03:36,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:03:36,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:03:36,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:03:36,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:03:36,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:03:36,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:03:36,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:03:36,053 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:03:36,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:03:36,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:03:36,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:03:36,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:03:36,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:03:36,055 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:03:36,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:03:36,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:03:36,055 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:03:36,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:03:36,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:03:36,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:03:36,056 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_c8476103-3991-4f90-b989-e42ce591d9f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8476103-3991-4f90-b989-e42ce591d9f6/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7886b177c92b4ec1219ee711a07359fe3486e712c9b900d7fcd9cba87c2cdbe [2022-11-19 08:03:36,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:03:36,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:03:36,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:03:36,459 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:03:36,460 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:03:36,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8476103-3991-4f90-b989-e42ce591d9f6/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w32_d128_e0.c [2022-11-19 08:03:36,534 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8476103-3991-4f90-b989-e42ce591d9f6/bin/utaipan-I9t0OCRTmS/data/80b620750/3892a311e7264c9cb39954c8caedf70b/FLAG759f3e77a [2022-11-19 08:03:37,341 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:03:37,342 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8476103-3991-4f90-b989-e42ce591d9f6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w32_d128_e0.c [2022-11-19 08:03:37,390 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8476103-3991-4f90-b989-e42ce591d9f6/bin/utaipan-I9t0OCRTmS/data/80b620750/3892a311e7264c9cb39954c8caedf70b/FLAG759f3e77a [2022-11-19 08:03:37,897 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8476103-3991-4f90-b989-e42ce591d9f6/bin/utaipan-I9t0OCRTmS/data/80b620750/3892a311e7264c9cb39954c8caedf70b [2022-11-19 08:03:37,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:03:37,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:03:37,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:03:37,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:03:37,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:03:37,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:37" (1/1) ... [2022-11-19 08:03:37,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c9c763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:37, skipping insertion in model container [2022-11-19 08:03:37,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:37" (1/1) ... [2022-11-19 08:03:37,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:03:38,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:03:38,485 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_c8476103-3991-4f90-b989-e42ce591d9f6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w32_d128_e0.c[1110,1123] [2022-11-19 08:03:39,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:03:39,475 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:03:39,486 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_c8476103-3991-4f90-b989-e42ce591d9f6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w32_d128_e0.c[1110,1123] [2022-11-19 08:03:39,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:03:39,938 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:03:39,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:39 WrapperNode [2022-11-19 08:03:39,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:03:39,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:03:39,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:03:39,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:03:39,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:39" (1/1) ... [2022-11-19 08:03:40,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:39" (1/1) ... [2022-11-19 08:03:40,655 INFO L138 Inliner]: procedures = 11, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 12727 [2022-11-19 08:03:40,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:03:40,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:03:40,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:03:40,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:03:40,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:39" (1/1) ... [2022-11-19 08:03:40,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:39" (1/1) ... [2022-11-19 08:03:40,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:39" (1/1) ... [2022-11-19 08:03:40,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:39" (1/1) ... [2022-11-19 08:03:40,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:39" (1/1) ... [2022-11-19 08:03:41,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:39" (1/1) ... [2022-11-19 08:03:41,069 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:39" (1/1) ... [2022-11-19 08:03:41,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:39" (1/1) ... [2022-11-19 08:03:41,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:03:41,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:03:41,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:03:41,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:03:41,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:39" (1/1) ... [2022-11-19 08:03:41,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:03:41,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8476103-3991-4f90-b989-e42ce591d9f6/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:03:41,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8476103-3991-4f90-b989-e42ce591d9f6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:03:41,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8476103-3991-4f90-b989-e42ce591d9f6/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:03:41,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:03:41,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:03:41,270 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:03:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:03:42,723 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:03:42,726 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:04:12,365 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:04:50,684 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:04:50,684 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:04:50,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:50 BoogieIcfgContainer [2022-11-19 08:04:50,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:04:50,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:04:50,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:04:50,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:04:50,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:03:37" (1/3) ... [2022-11-19 08:04:50,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55bd0ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:50, skipping insertion in model container [2022-11-19 08:04:50,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:39" (2/3) ... [2022-11-19 08:04:50,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55bd0ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:50, skipping insertion in model container [2022-11-19 08:04:50,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:50" (3/3) ... [2022-11-19 08:04:50,701 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n2_w32_d128_e0.c [2022-11-19 08:04:50,725 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:04:50,726 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:04:50,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:04:50,785 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;@38c30164, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:04:50,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:04:50,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-19 08:04:50,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-19 08:04:50,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:50,799 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:50,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:04:50,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:50,805 INFO L85 PathProgramCache]: Analyzing trace with hash 340391706, now seen corresponding path program 1 times [2022-11-19 08:04:50,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:50,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354600285] [2022-11-19 08:04:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:50,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat