./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p12.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur --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 30e68adbe1c4cb4359d060d513c981dc84c9a5086bfaf8b4f9ba7359365655ac --- 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-38b53e6 [2022-11-26 00:46:26,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:46:26,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:46:26,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:46:26,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:46:26,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:46:26,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:46:26,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:46:26,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:46:26,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:46:26,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:46:26,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:46:26,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:46:26,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:46:26,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:46:26,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:46:26,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:46:26,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:46:26,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:46:26,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:46:26,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:46:26,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:46:26,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:46:26,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:46:26,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:46:26,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:46:26,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:46:26,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:46:26,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:46:26,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:46:26,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:46:26,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:46:26,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:46:26,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:46:26,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:46:26,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:46:26,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:46:26,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:46:26,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:46:26,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:46:26,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:46:26,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:46:26,389 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:46:26,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:46:26,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:46:26,392 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:46:26,393 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:46:26,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:46:26,394 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:46:26,394 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:46:26,395 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:46:26,395 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:46:26,396 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:46:26,396 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:46:26,397 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:46:26,397 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:46:26,397 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:46:26,397 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:46:26,398 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:46:26,398 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:46:26,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:46:26,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:46:26,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:46:26,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:46:26,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:46:26,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:46:26,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:46:26,400 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:46:26,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:46:26,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:46:26,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:46:26,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:46:26,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:46:26,402 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:46:26,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:46:26,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:46:26,403 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:46:26,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:46:26,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:46:26,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:46:26,409 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_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30e68adbe1c4cb4359d060d513c981dc84c9a5086bfaf8b4f9ba7359365655ac [2022-11-26 00:46:26,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:46:26,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:46:26,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:46:26,739 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:46:26,739 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:46:26,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p12.c [2022-11-26 00:46:29,867 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:46:30,181 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:46:30,182 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p12.c [2022-11-26 00:46:30,204 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/data/336ae9f5f/6a332b12fab944f7b957c307f3014505/FLAG170b827bb [2022-11-26 00:46:30,230 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/data/336ae9f5f/6a332b12fab944f7b957c307f3014505 [2022-11-26 00:46:30,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:46:30,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:46:30,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:46:30,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:46:30,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:46:30,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:30,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b65db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30, skipping insertion in model container [2022-11-26 00:46:30,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:30,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:46:30,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:46:30,471 WARN L237 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_8091b70f-b76d-4b38-8c09-f194df5bbabd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p12.c[1107,1120] [2022-11-26 00:46:30,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:46:30,761 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:46:30,773 WARN L237 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_8091b70f-b76d-4b38-8c09-f194df5bbabd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p12.c[1107,1120] [2022-11-26 00:46:30,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:46:30,982 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:46:30,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30 WrapperNode [2022-11-26 00:46:30,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:46:30,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:46:30,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:46:30,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:46:30,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:31,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:31,120 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1079 [2022-11-26 00:46:31,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:46:31,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:46:31,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:46:31,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:46:31,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:31,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:31,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:31,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:31,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:31,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:31,196 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:31,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:31,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:46:31,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:46:31,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:46:31,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:46:31,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (1/1) ... [2022-11-26 00:46:31,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:46:31,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:46:31,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:46:31,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:46:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:46:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:46:31,660 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:46:31,663 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:46:50,425 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:46:50,460 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:46:50,461 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:46:50,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:46:50 BoogieIcfgContainer [2022-11-26 00:46:50,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:46:50,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:46:50,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:46:50,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:46:50,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:46:30" (1/3) ... [2022-11-26 00:46:50,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2374e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:46:50, skipping insertion in model container [2022-11-26 00:46:50,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:30" (2/3) ... [2022-11-26 00:46:50,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2374e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:46:50, skipping insertion in model container [2022-11-26 00:46:50,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:46:50" (3/3) ... [2022-11-26 00:46:50,477 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p12.c [2022-11-26 00:46:50,497 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:46:50,497 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:46:50,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:46:50,567 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;@70c68a98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:46:50,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:46:50,574 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) [2022-11-26 00:46:50,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:46:50,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:46:50,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:46:50,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:46:50,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:46:50,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-26 00:46:50,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:46:50,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657367836] [2022-11-26 00:46:50,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:50,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:46:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:46:51,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:46:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:46:51,544 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:46:51,546 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:46:51,548 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:46:51,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:46:51,555 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:46:51,559 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:46:51,602 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:46:51,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:46:51 BoogieIcfgContainer [2022-11-26 00:46:51,626 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:46:51,629 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:46:51,629 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:46:51,629 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:46:51,630 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:46:50" (3/4) ... [2022-11-26 00:46:51,634 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:46:51,634 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:46:51,637 INFO L158 Benchmark]: Toolchain (without parser) took 21400.24ms. Allocated memory was 163.6MB in the beginning and 539.0MB in the end (delta: 375.4MB). Free memory was 121.8MB in the beginning and 443.5MB in the end (delta: -321.8MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. [2022-11-26 00:46:51,637 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 163.6MB. Free memory was 132.2MB in the beginning and 132.1MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:46:51,638 INFO L158 Benchmark]: CACSL2BoogieTranslator took 743.98ms. Allocated memory is still 163.6MB. Free memory was 121.0MB in the beginning and 83.9MB in the end (delta: 37.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-26 00:46:51,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 136.90ms. Allocated memory is still 163.6MB. Free memory was 83.9MB in the beginning and 73.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-26 00:46:51,645 INFO L158 Benchmark]: Boogie Preprocessor took 110.75ms. Allocated memory is still 163.6MB. Free memory was 73.4MB in the beginning and 67.3MB in the end (delta: 6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-26 00:46:51,646 INFO L158 Benchmark]: RCFGBuilder took 19231.23ms. Allocated memory was 163.6MB in the beginning and 539.0MB in the end (delta: 375.4MB). Free memory was 67.3MB in the beginning and 212.9MB in the end (delta: -145.6MB). Peak memory consumption was 278.7MB. Max. memory is 16.1GB. [2022-11-26 00:46:51,648 INFO L158 Benchmark]: TraceAbstraction took 1159.44ms. Allocated memory is still 539.0MB. Free memory was 212.9MB in the beginning and 443.5MB in the end (delta: -230.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:46:51,648 INFO L158 Benchmark]: Witness Printer took 6.74ms. Allocated memory is still 539.0MB. Free memory was 443.5MB in the beginning and 443.5MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:46:51,657 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 163.6MB. Free memory was 132.2MB in the beginning and 132.1MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 743.98ms. Allocated memory is still 163.6MB. Free memory was 121.0MB in the beginning and 83.9MB in the end (delta: 37.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 136.90ms. Allocated memory is still 163.6MB. Free memory was 83.9MB in the beginning and 73.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 110.75ms. Allocated memory is still 163.6MB. Free memory was 73.4MB in the beginning and 67.3MB in the end (delta: 6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 19231.23ms. Allocated memory was 163.6MB in the beginning and 539.0MB in the end (delta: 375.4MB). Free memory was 67.3MB in the beginning and 212.9MB in the end (delta: -145.6MB). Peak memory consumption was 278.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1159.44ms. Allocated memory is still 539.0MB. Free memory was 212.9MB in the beginning and 443.5MB in the end (delta: -230.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.74ms. Allocated memory is still 539.0MB. Free memory was 443.5MB in the beginning and 443.5MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. 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 153, overapproximation of bitwiseOr at line 151, overapproximation of bitwiseAnd at line 158. 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_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 5); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (5 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 12); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (12 - 1); [L34] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 3); [L35] const SORT_7 msb_SORT_7 = (SORT_7)1 << (3 - 1); [L37] const SORT_26 mask_SORT_26 = (SORT_26)-1 >> (sizeof(SORT_26) * 8 - 2); [L38] const SORT_26 msb_SORT_26 = (SORT_26)1 << (2 - 1); [L40] const SORT_108 mask_SORT_108 = (SORT_108)-1 >> (sizeof(SORT_108) * 8 - 4); [L41] const SORT_108 msb_SORT_108 = (SORT_108)1 << (4 - 1); [L43] const SORT_165 mask_SORT_165 = (SORT_165)-1 >> (sizeof(SORT_165) * 8 - 32); [L44] const SORT_165 msb_SORT_165 = (SORT_165)1 << (32 - 1); [L46] const SORT_7 var_8 = 0; [L47] const SORT_3 var_15 = 0; [L48] const SORT_1 var_41 = 1; [L49] const SORT_1 var_51 = 0; [L50] const SORT_5 var_54 = 0; [L51] const SORT_7 var_68 = 2; [L52] const SORT_7 var_72 = 1; [L53] const SORT_7 var_77 = 4; [L54] const SORT_7 var_79 = 5; [L55] const SORT_7 var_83 = 3; [L56] const SORT_3 var_95 = 2; [L57] const SORT_7 var_125 = 7; [L58] const SORT_7 var_130 = 6; [L59] const SORT_165 var_167 = 0; [L60] const SORT_3 var_197 = 31; [L62] SORT_1 input_2; [L63] SORT_3 input_4; [L64] SORT_5 input_6; [L65] SORT_3 input_186; [L66] SORT_3 input_187; [L67] SORT_3 input_188; [L68] SORT_3 input_196; [L69] SORT_3 input_206; [L70] SORT_3 input_207; [L71] SORT_3 input_208; [L72] SORT_3 input_211; [L73] SORT_3 input_230; [L74] SORT_3 input_231; [L75] SORT_3 input_232; [L76] SORT_3 input_235; [L77] SORT_3 input_237; [L78] SORT_26 input_251; [L79] SORT_26 input_252; [L80] SORT_26 input_253; [L82] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L83] SORT_3 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L84] SORT_3 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L85] SORT_3 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L86] SORT_3 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L87] SORT_3 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L88] SORT_1 state_52 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_5 state_55 = __VERIFIER_nondet_ushort() & mask_SORT_5; [L90] SORT_3 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L91] SORT_3 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L92] SORT_3 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L93] SORT_3 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L94] SORT_3 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L96] SORT_7 init_10_arg_1 = var_8; [L97] state_9 = init_10_arg_1 [L98] SORT_3 init_17_arg_1 = var_15; [L99] state_16 = init_17_arg_1 [L100] SORT_3 init_20_arg_1 = var_15; [L101] state_19 = init_20_arg_1 [L102] SORT_3 init_46_arg_1 = var_15; [L103] state_45 = init_46_arg_1 [L104] SORT_3 init_48_arg_1 = var_15; [L105] state_47 = init_48_arg_1 [L106] SORT_3 init_50_arg_1 = var_15; [L107] state_49 = init_50_arg_1 [L108] SORT_1 init_53_arg_1 = var_51; [L109] state_52 = init_53_arg_1 [L110] SORT_5 init_56_arg_1 = var_54; [L111] state_55 = init_56_arg_1 [L112] SORT_3 init_58_arg_1 = var_15; [L113] state_57 = init_58_arg_1 [L114] SORT_3 init_60_arg_1 = var_15; [L115] state_59 = init_60_arg_1 [L116] SORT_3 init_62_arg_1 = var_15; [L117] state_61 = init_62_arg_1 [L118] SORT_3 init_64_arg_1 = var_15; [L119] state_63 = init_64_arg_1 [L120] SORT_3 init_66_arg_1 = var_15; [L121] state_65 = init_66_arg_1 VAL [init_10_arg_1=0, init_17_arg_1=0, init_20_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_53_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, mask_SORT_1=1, mask_SORT_108=15, mask_SORT_165=4294967295, mask_SORT_26=3, mask_SORT_3=31, mask_SORT_5=4095, mask_SORT_7=7, msb_SORT_1=1, msb_SORT_108=8, msb_SORT_165=2147483648, msb_SORT_26=2, msb_SORT_3=16, msb_SORT_5=2048, msb_SORT_7=4, state_16=0, state_19=0, state_45=0, state_47=0, state_49=0, state_52=0, state_55=0, state_57=0, state_59=0, state_61=0, state_63=0, state_65=0, state_9=0, var_125=7, var_130=6, var_15=0, var_167=0, var_197=31, var_41=1, var_51=0, var_54=0, var_68=2, var_72=1, var_77=4, var_79=5, var_8=0, var_83=3, var_95=2] [L124] input_2 = __VERIFIER_nondet_uchar() [L125] input_4 = __VERIFIER_nondet_uchar() [L126] input_6 = __VERIFIER_nondet_ushort() [L127] input_186 = __VERIFIER_nondet_uchar() [L128] input_187 = __VERIFIER_nondet_uchar() [L129] input_188 = __VERIFIER_nondet_uchar() [L130] input_196 = __VERIFIER_nondet_uchar() [L131] input_206 = __VERIFIER_nondet_uchar() [L132] input_207 = __VERIFIER_nondet_uchar() [L133] input_208 = __VERIFIER_nondet_uchar() [L134] input_211 = __VERIFIER_nondet_uchar() [L135] input_230 = __VERIFIER_nondet_uchar() [L136] input_231 = __VERIFIER_nondet_uchar() [L137] input_232 = __VERIFIER_nondet_uchar() [L138] input_235 = __VERIFIER_nondet_uchar() [L139] input_237 = __VERIFIER_nondet_uchar() [L140] input_251 = __VERIFIER_nondet_uchar() [L141] input_252 = __VERIFIER_nondet_uchar() [L142] input_253 = __VERIFIER_nondet_uchar() [L145] SORT_7 var_11_arg_0 = state_9; [L146] SORT_1 var_11 = var_11_arg_0 >> 0; [L147] SORT_7 var_12_arg_0 = state_9; [L148] SORT_1 var_12 = var_12_arg_0 >> 1; [L149] SORT_1 var_13_arg_0 = var_11; [L150] SORT_1 var_13_arg_1 = var_12; [L151] SORT_1 var_13 = var_13_arg_0 | var_13_arg_1; [L152] SORT_1 var_14_arg_0 = var_13; [L153] SORT_1 var_14 = ~var_14_arg_0; [L154] SORT_3 var_18_arg_0 = state_16; [L155] SORT_1 var_18 = var_18_arg_0 >> 1; [L156] SORT_3 var_21_arg_0 = state_19; [L157] SORT_7 var_21 = var_21_arg_0 >> 2; [L158] var_21 = var_21 & mask_SORT_7 [L159] SORT_3 var_22_arg_0 = state_16; [L160] SORT_7 var_22 = var_22_arg_0 >> 2; [L161] var_22 = var_22 & mask_SORT_7 [L162] SORT_7 var_23_arg_0 = var_21; [L163] SORT_7 var_23_arg_1 = var_22; [L164] SORT_1 var_23 = var_23_arg_0 == var_23_arg_1; [L165] SORT_1 var_24_arg_0 = var_18; [L166] SORT_1 var_24_arg_1 = var_23; [L167] SORT_1 var_24 = var_24_arg_0 | var_24_arg_1; [L168] SORT_3 var_25_arg_0 = state_16; [L169] SORT_1 var_25 = var_25_arg_0 >> 2; [L170] SORT_3 var_27_arg_0 = state_19; [L171] SORT_26 var_27 = var_27_arg_0 >> 3; [L172] var_27 = var_27 & mask_SORT_26 [L173] SORT_3 var_28_arg_0 = state_16; [L174] SORT_26 var_28 = var_28_arg_0 >> 3; [L175] var_28 = var_28 & mask_SORT_26 [L176] SORT_26 var_29_arg_0 = var_27; [L177] SORT_26 var_29_arg_1 = var_28; [L178] SORT_1 var_29 = var_29_arg_0 == var_29_arg_1; [L179] SORT_1 var_30_arg_0 = var_25; [L180] SORT_1 var_30_arg_1 = var_29; [L181] SORT_1 var_30 = var_30_arg_0 | var_30_arg_1; [L182] SORT_1 var_31_arg_0 = var_24; [L183] SORT_1 var_31_arg_1 = var_30; [L184] SORT_1 var_31 = var_31_arg_0 & var_31_arg_1; [L185] SORT_3 var_32_arg_0 = state_16; [L186] SORT_1 var_32 = var_32_arg_0 >> 3; [L187] SORT_3 var_33_arg_0 = state_19; [L188] SORT_1 var_33 = var_33_arg_0 >> 4; [L189] var_33 = var_33 & mask_SORT_1 [L190] SORT_3 var_34_arg_0 = state_16; [L191] SORT_1 var_34 = var_34_arg_0 >> 4; [L192] var_34 = var_34 & mask_SORT_1 [L193] SORT_1 var_35_arg_0 = var_33; [L194] SORT_1 var_35_arg_1 = var_34; [L195] SORT_1 var_35 = var_35_arg_0 == var_35_arg_1; [L196] SORT_1 var_36_arg_0 = var_32; [L197] SORT_1 var_36_arg_1 = var_35; [L198] SORT_1 var_36 = var_36_arg_0 | var_36_arg_1; [L199] SORT_1 var_37_arg_0 = var_31; [L200] SORT_1 var_37_arg_1 = var_36; [L201] SORT_1 var_37 = var_37_arg_0 & var_37_arg_1; [L202] SORT_1 var_38_arg_0 = var_14; [L203] SORT_1 var_38_arg_1 = var_37; [L204] SORT_1 var_38 = var_38_arg_0 | var_38_arg_1; [L205] SORT_1 var_42_arg_0 = var_38; [L206] SORT_1 var_42 = ~var_42_arg_0; [L207] SORT_1 var_43_arg_0 = var_41; [L208] SORT_1 var_43_arg_1 = var_42; [L209] SORT_1 var_43 = var_43_arg_0 & var_43_arg_1; [L210] var_43 = var_43 & mask_SORT_1 [L211] SORT_1 bad_44_arg_0 = var_43; [L212] CALL __VERIFIER_assert(!(bad_44_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: 1.0s, 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, 0.4s 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 [2022-11-26 00:46:51,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/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_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur --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 30e68adbe1c4cb4359d060d513c981dc84c9a5086bfaf8b4f9ba7359365655ac --- 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-38b53e6 [2022-11-26 00:46:54,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:46:54,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:46:54,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:46:54,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:46:54,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:46:54,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:46:54,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:46:54,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:46:54,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:46:54,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:46:54,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:46:54,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:46:54,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:46:54,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:46:54,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:46:54,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:46:54,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:46:54,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:46:54,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:46:54,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:46:54,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:46:54,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:46:54,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:46:54,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:46:54,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:46:54,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:46:54,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:46:54,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:46:54,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:46:54,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:46:54,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:46:54,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:46:54,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:46:54,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:46:54,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:46:54,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:46:54,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:46:54,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:46:54,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:46:54,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:46:54,194 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-26 00:46:54,216 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:46:54,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:46:54,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:46:54,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:46:54,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:46:54,218 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:46:54,218 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:46:54,218 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:46:54,219 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:46:54,219 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:46:54,219 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:46:54,219 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:46:54,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:46:54,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:46:54,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:46:54,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:46:54,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:46:54,221 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:46:54,221 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:46:54,222 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:46:54,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:46:54,222 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:46:54,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:46:54,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:46:54,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:46:54,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:46:54,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:46:54,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:46:54,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:46:54,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:46:54,224 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:46:54,224 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:46:54,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:46:54,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:46:54,225 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:46:54,225 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_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30e68adbe1c4cb4359d060d513c981dc84c9a5086bfaf8b4f9ba7359365655ac [2022-11-26 00:46:54,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:46:54,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:46:54,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:46:54,675 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:46:54,675 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:46:54,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p12.c [2022-11-26 00:46:57,827 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:46:58,145 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:46:58,146 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p12.c [2022-11-26 00:46:58,161 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/data/c691c1f79/5e5fd719f8ba48498817026cd2310c50/FLAGfdf5cc027 [2022-11-26 00:46:58,181 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/data/c691c1f79/5e5fd719f8ba48498817026cd2310c50 [2022-11-26 00:46:58,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:46:58,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:46:58,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:46:58,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:46:58,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:46:58,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:46:58" (1/1) ... [2022-11-26 00:46:58,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b04033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:58, skipping insertion in model container [2022-11-26 00:46:58,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:46:58" (1/1) ... [2022-11-26 00:46:58,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:46:58,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:46:58,524 WARN L237 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_8091b70f-b76d-4b38-8c09-f194df5bbabd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p12.c[1107,1120] [2022-11-26 00:46:58,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:46:58,787 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:46:58,797 WARN L237 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_8091b70f-b76d-4b38-8c09-f194df5bbabd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p12.c[1107,1120] [2022-11-26 00:46:58,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:46:58,926 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:46:58,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:58 WrapperNode [2022-11-26 00:46:58,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:46:58,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:46:58,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:46:58,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:46:58,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:58" (1/1) ... [2022-11-26 00:46:58,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:58" (1/1) ... [2022-11-26 00:46:59,131 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1079 [2022-11-26 00:46:59,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:46:59,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:46:59,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:46:59,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:46:59,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:58" (1/1) ... [2022-11-26 00:46:59,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:58" (1/1) ... [2022-11-26 00:46:59,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:58" (1/1) ... [2022-11-26 00:46:59,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:58" (1/1) ... [2022-11-26 00:46:59,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:58" (1/1) ... [2022-11-26 00:46:59,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:58" (1/1) ... [2022-11-26 00:46:59,231 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:58" (1/1) ... [2022-11-26 00:46:59,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:58" (1/1) ... [2022-11-26 00:46:59,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:46:59,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:46:59,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:46:59,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:46:59,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:58" (1/1) ... [2022-11-26 00:46:59,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:46:59,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:46:59,315 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:46:59,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:46:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:46:59,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:46:59,741 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:46:59,743 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:47:01,160 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:47:01,167 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:47:01,169 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:47:01,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:47:01 BoogieIcfgContainer [2022-11-26 00:47:01,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:47:01,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:47:01,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:47:01,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:47:01,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:46:58" (1/3) ... [2022-11-26 00:47:01,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a3eb989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:47:01, skipping insertion in model container [2022-11-26 00:47:01,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:46:58" (2/3) ... [2022-11-26 00:47:01,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a3eb989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:47:01, skipping insertion in model container [2022-11-26 00:47:01,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:47:01" (3/3) ... [2022-11-26 00:47:01,183 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p12.c [2022-11-26 00:47:01,202 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:47:01,203 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:47:01,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:47:01,269 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;@1a5d2301, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:47:01,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:47:01,274 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) [2022-11-26 00:47:01,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:47:01,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:47:01,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:47:01,282 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:47:01,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:47:01,289 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-26 00:47:01,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:47:01,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609604167] [2022-11-26 00:47:01,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:47:01,307 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 [2022-11-26 00:47:01,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:47:01,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/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) [2022-11-26 00:47:01,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:47:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:47:01,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-26 00:47:01,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:47:02,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:02,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:47:02,136 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:47:02,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609604167] [2022-11-26 00:47:02,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609604167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:47:02,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:47:02,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:47:02,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180846748] [2022-11-26 00:47:02,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:47:02,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:47:02,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:47:02,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:47:02,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:47:02,198 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) [2022-11-26 00:47:02,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:47:02,378 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-26 00:47:02,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:47:02,381 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 [2022-11-26 00:47:02,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:47:02,388 INFO L225 Difference]: With dead ends: 20 [2022-11-26 00:47:02,389 INFO L226 Difference]: Without dead ends: 11 [2022-11-26 00:47:02,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:47:02,395 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:47:02,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:47:02,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-26 00:47:02,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-26 00:47:02,423 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) [2022-11-26 00:47:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 00:47:02,425 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-26 00:47:02,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:47:02,426 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 00:47:02,426 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) [2022-11-26 00:47:02,426 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 00:47:02,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:47:02,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:47:02,427 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:47:02,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:47:02,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:47:02,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:47:02,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:47:02,641 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-26 00:47:02,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:47:02,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274914333] [2022-11-26 00:47:02,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:47:02,644 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 [2022-11-26 00:47:02,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:47:02,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/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) [2022-11-26 00:47:02,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:47:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:47:03,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-26 00:47:03,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:47:03,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:03,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:47:27,396 WARN L233 SmtUtils]: Spent 22.86s on a formula simplification. DAG size of input: 247 DAG size of output: 142 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:48:22,969 WARN L233 SmtUtils]: Spent 53.02s on a formula simplification. DAG size of input: 237 DAG size of output: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:48:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:23,246 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:48:23,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274914333] [2022-11-26 00:48:23,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274914333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:48:23,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1130069408] [2022-11-26 00:48:23,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:23,247 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:48:23,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:48:23,250 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:48:23,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-26 00:48:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:24,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-26 00:48:24,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:48:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:24,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:49:08,416 WARN L233 SmtUtils]: Spent 37.04s on a formula simplification. DAG size of input: 247 DAG size of output: 142 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:50:48,633 WARN L233 SmtUtils]: Spent 1.56m on a formula simplification. DAG size of input: 237 DAG size of output: 187 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:50:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:50:48,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1130069408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:50:48,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384608024] [2022-11-26 00:50:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:50:48,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:50:48,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:50:48,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:50:48,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:50:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:50:49,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-26 00:50:49,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:50:49,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:50:49,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:51:30,605 WARN L233 SmtUtils]: Spent 30.39s on a formula simplification. DAG size of input: 247 DAG size of output: 142 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:53:40,926 WARN L233 SmtUtils]: Spent 1.99m on a formula simplification. DAG size of input: 281 DAG size of output: 232 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:55:25,481 WARN L233 SmtUtils]: Spent 1.73m on a formula simplification. DAG size of input: 235 DAG size of output: 226 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:57:37,787 WARN L233 SmtUtils]: Spent 2.02m on a formula simplification. DAG size of input: 223 DAG size of output: 221 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:57:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:37,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384608024] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:57:37,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:57:37,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 7] total 17 [2022-11-26 00:57:37,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247133035] [2022-11-26 00:57:37,828 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:57:37,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-26 00:57:37,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:57:37,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-26 00:57:37,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=193, Unknown=22, NotChecked=0, Total=272 [2022-11-26 00:57:37,835 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 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) [2022-11-26 00:57:38,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:57:38,400 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-26 00:57:38,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:57:38,403 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 00:57:38,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:57:38,403 INFO L225 Difference]: With dead ends: 16 [2022-11-26 00:57:38,404 INFO L226 Difference]: Without dead ends: 14 [2022-11-26 00:57:38,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 628.1s TimeCoverageRelationStatistics Valid=95, Invalid=263, Unknown=22, NotChecked=0, Total=380 [2022-11-26 00:57:38,405 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:57:38,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 28 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:57:38,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-26 00:57:38,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-26 00:57:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:57:38,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-26 00:57:38,411 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-26 00:57:38,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:57:38,411 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-26 00:57:38,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 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) [2022-11-26 00:57:38,412 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-26 00:57:38,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:57:38,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:57:38,412 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-26 00:57:38,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:57:38,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:57:38,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:57:39,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:57:39,022 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:57:39,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:57:39,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-26 00:57:39,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:57:39,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13799298] [2022-11-26 00:57:39,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:57:39,025 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 [2022-11-26 00:57:39,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:57:39,026 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/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) [2022-11-26 00:57:39,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-26 00:57:39,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:57:39,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:57:39,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 1915 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-26 00:57:39,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:57:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:40,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:58:15,363 WARN L233 SmtUtils]: Spent 34.50s on a formula simplification. DAG size of input: 247 DAG size of output: 142 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:59:24,310 WARN L233 SmtUtils]: Spent 1.11m on a formula simplification. DAG size of input: 234 DAG size of output: 182 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:01:39,094 WARN L233 SmtUtils]: Spent 2.16m on a formula simplification. DAG size of input: 328 DAG size of output: 257 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:01:39,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:39,372 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:01:39,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13799298] [2022-11-26 01:01:39,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13799298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:01:39,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [138308210] [2022-11-26 01:01:39,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 01:01:39,373 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 01:01:39,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 01:01:39,376 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 01:01:39,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8091b70f-b76d-4b38-8c09-f194df5bbabd/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-26 01:01:40,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 01:01:40,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:01:40,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1915 conjuncts, 123 conjunts are in the unsatisfiable core [2022-11-26 01:01:40,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:01:41,548 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:41,548 INFO L328 TraceCheckSpWp]: Computing backward predicates...