./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh --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 d7599fcf7e03749d82b28bd7d258c2b67bb77e4046198f3fa9cda552ff29f1ea --- 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-2329fc7 [2022-12-14 04:41:50,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:41:50,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:41:50,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:41:50,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:41:50,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:41:50,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:41:50,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:41:50,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:41:50,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:41:50,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:41:50,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:41:50,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:41:50,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:41:50,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:41:50,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:41:50,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:41:50,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:41:50,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:41:50,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:41:50,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:41:50,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:41:50,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:41:50,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:41:50,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:41:50,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:41:50,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:41:50,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:41:50,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:41:50,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:41:50,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:41:50,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:41:50,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:41:50,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:41:50,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:41:50,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:41:50,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:41:50,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:41:50,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:41:50,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:41:50,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:41:50,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 04:41:50,376 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:41:50,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:41:50,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:41:50,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:41:50,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:41:50,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:41:50,378 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:41:50,378 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:41:50,378 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:41:50,378 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:41:50,378 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:41:50,378 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:41:50,379 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:41:50,379 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:41:50,379 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:41:50,379 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:41:50,379 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:41:50,379 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:41:50,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:41:50,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:41:50,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:41:50,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:41:50,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:41:50,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:41:50,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:41:50,381 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:41:50,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:41:50,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:41:50,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:41:50,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:41:50,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:41:50,382 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:41:50,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:41:50,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:41:50,383 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:41:50,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:41:50,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:41:50,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:41:50,383 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_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7599fcf7e03749d82b28bd7d258c2b67bb77e4046198f3fa9cda552ff29f1ea [2022-12-14 04:41:50,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:41:50,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:41:50,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:41:50,605 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:41:50,605 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:41:50,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c [2022-12-14 04:41:53,147 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:41:53,386 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:41:53,387 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c [2022-12-14 04:41:53,397 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/data/1a2981633/a43723b2c20e4c31bf594b81fb70105f/FLAG634b8f2b4 [2022-12-14 04:41:53,743 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/data/1a2981633/a43723b2c20e4c31bf594b81fb70105f [2022-12-14 04:41:53,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:41:53,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:41:53,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:41:53,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:41:53,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:41:53,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:41:53" (1/1) ... [2022-12-14 04:41:53,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3354557d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:41:53, skipping insertion in model container [2022-12-14 04:41:53,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:41:53" (1/1) ... [2022-12-14 04:41:53,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:41:53,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:41:53,925 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_64ef6f77-f1d0-4965-b260-de43764ca10f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c[1014,1027] [2022-12-14 04:41:54,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:41:54,105 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:41:54,112 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_64ef6f77-f1d0-4965-b260-de43764ca10f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c[1014,1027] [2022-12-14 04:41:54,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:41:54,215 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:41:54,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:41:54 WrapperNode [2022-12-14 04:41:54,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:41:54,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:41:54,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:41:54,216 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:41:54,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:41:54" (1/1) ... [2022-12-14 04:41:54,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:41:54" (1/1) ... [2022-12-14 04:41:54,288 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1074 [2022-12-14 04:41:54,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:41:54,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:41:54,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:41:54,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:41:54,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:41:54" (1/1) ... [2022-12-14 04:41:54,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:41:54" (1/1) ... [2022-12-14 04:41:54,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:41:54" (1/1) ... [2022-12-14 04:41:54,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:41:54" (1/1) ... [2022-12-14 04:41:54,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:41:54" (1/1) ... [2022-12-14 04:41:54,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:41:54" (1/1) ... [2022-12-14 04:41:54,332 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:41:54" (1/1) ... [2022-12-14 04:41:54,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:41:54" (1/1) ... [2022-12-14 04:41:54,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:41:54,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:41:54,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:41:54,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:41:54,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:41:54" (1/1) ... [2022-12-14 04:41:54,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:41:54,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:41:54,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:41:54,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:41:54,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:41:54,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:41:54,585 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:41:54,587 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:42:30,588 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:42:30,605 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:42:30,605 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 04:42:30,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:42:30 BoogieIcfgContainer [2022-12-14 04:42:30,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:42:30,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:42:30,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:42:30,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:42:30,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:41:53" (1/3) ... [2022-12-14 04:42:30,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b7e117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:42:30, skipping insertion in model container [2022-12-14 04:42:30,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:41:54" (2/3) ... [2022-12-14 04:42:30,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b7e117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:42:30, skipping insertion in model container [2022-12-14 04:42:30,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:42:30" (3/3) ... [2022-12-14 04:42:30,613 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.1.prop1-func-interl.c [2022-12-14 04:42:30,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:42:30,626 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 04:42:30,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:42:30,665 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;@1efd7681, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:42:30,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 04:42:30,668 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) [2022-12-14 04:42:30,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 04:42:30,673 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:30,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 04:42:30,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:30,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:30,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 04:42:30,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:42:30,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741717532] [2022-12-14 04:42:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:30,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:42:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:42:30,848 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 04:42:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 04:42:30,922 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 04:42:30,924 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 04:42:30,925 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 04:42:30,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:42:30,929 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 04:42:30,932 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 04:42:30,945 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 04:42:30,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:42:30 BoogieIcfgContainer [2022-12-14 04:42:30,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 04:42:30,951 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 04:42:30,952 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 04:42:30,952 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 04:42:30,952 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:42:30" (3/4) ... [2022-12-14 04:42:30,954 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 04:42:30,954 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 04:42:30,955 INFO L158 Benchmark]: Toolchain (without parser) took 37205.28ms. Allocated memory was 127.9MB in the beginning and 813.7MB in the end (delta: 685.8MB). Free memory was 89.4MB in the beginning and 624.7MB in the end (delta: -535.3MB). Peak memory consumption was 151.2MB. Max. memory is 16.1GB. [2022-12-14 04:42:30,955 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 127.9MB. Free memory is still 99.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 04:42:30,956 INFO L158 Benchmark]: CACSL2BoogieTranslator took 465.06ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 89.1MB in the beginning and 119.8MB in the end (delta: -30.7MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2022-12-14 04:42:30,956 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.89ms. Allocated memory is still 155.2MB. Free memory was 119.8MB in the beginning and 108.0MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 04:42:30,957 INFO L158 Benchmark]: Boogie Preprocessor took 57.63ms. Allocated memory is still 155.2MB. Free memory was 108.0MB in the beginning and 100.9MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 04:42:30,957 INFO L158 Benchmark]: RCFGBuilder took 36260.32ms. Allocated memory was 155.2MB in the beginning and 813.7MB in the end (delta: 658.5MB). Free memory was 100.9MB in the beginning and 660.4MB in the end (delta: -559.4MB). Peak memory consumption was 481.5MB. Max. memory is 16.1GB. [2022-12-14 04:42:30,957 INFO L158 Benchmark]: TraceAbstraction took 342.90ms. Allocated memory is still 813.7MB. Free memory was 660.4MB in the beginning and 624.7MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-12-14 04:42:30,958 INFO L158 Benchmark]: Witness Printer took 2.95ms. Allocated memory is still 813.7MB. Free memory is still 624.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 04:42:30,960 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 127.9MB. Free memory is still 99.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 465.06ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 89.1MB in the beginning and 119.8MB in the end (delta: -30.7MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.89ms. Allocated memory is still 155.2MB. Free memory was 119.8MB in the beginning and 108.0MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.63ms. Allocated memory is still 155.2MB. Free memory was 108.0MB in the beginning and 100.9MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 36260.32ms. Allocated memory was 155.2MB in the beginning and 813.7MB in the end (delta: 658.5MB). Free memory was 100.9MB in the beginning and 660.4MB in the end (delta: -559.4MB). Peak memory consumption was 481.5MB. Max. memory is 16.1GB. * TraceAbstraction took 342.90ms. Allocated memory is still 813.7MB. Free memory was 660.4MB in the beginning and 624.7MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 2.95ms. Allocated memory is still 813.7MB. Free memory is still 624.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 169, overapproximation of bitwiseOr at line 164, overapproximation of bitwiseAnd at line 142. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_30 = 0; [L39] const SORT_3 var_59 = 0; [L40] const SORT_4 var_61 = 5; [L41] const SORT_2 var_65 = 2; [L42] const SORT_4 var_69 = 1; [L43] const SORT_2 var_75 = 4; [L44] const SORT_4 var_77 = 2; [L45] const SORT_2 var_101 = 12; [L46] const SORT_2 var_154 = 15; [L47] const SORT_2 var_169 = 10; [L49] SORT_1 input_66; [L50] SORT_1 input_76; [L51] SORT_1 input_82; [L52] SORT_1 input_106; [L53] SORT_1 input_109; [L54] SORT_1 input_110; [L55] SORT_1 input_126; [L56] SORT_1 input_145; [L57] SORT_1 input_187; [L58] SORT_1 input_208; [L60] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L61] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L62] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L63] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L64] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L65] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L66] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L67] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L68] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L73] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_2 init_7_arg_1 = var_5; [L88] state_6 = init_7_arg_1 [L89] SORT_2 init_9_arg_1 = var_5; [L90] state_8 = init_9_arg_1 [L91] SORT_2 init_11_arg_1 = var_5; [L92] state_10 = init_11_arg_1 [L93] SORT_2 init_13_arg_1 = var_5; [L94] state_12 = init_13_arg_1 [L95] SORT_2 init_15_arg_1 = var_5; [L96] state_14 = init_15_arg_1 [L97] SORT_2 init_17_arg_1 = var_5; [L98] state_16 = init_17_arg_1 [L99] SORT_2 init_19_arg_1 = var_5; [L100] state_18 = init_19_arg_1 [L101] SORT_2 init_21_arg_1 = var_5; [L102] state_20 = init_21_arg_1 [L103] SORT_2 init_23_arg_1 = var_5; [L104] state_22 = init_23_arg_1 [L105] SORT_2 init_25_arg_1 = var_5; [L106] state_24 = init_25_arg_1 [L107] SORT_2 init_27_arg_1 = var_5; [L108] state_26 = init_27_arg_1 [L109] SORT_2 init_29_arg_1 = var_5; [L110] state_28 = init_29_arg_1 [L111] SORT_1 init_32_arg_1 = var_30; [L112] state_31 = init_32_arg_1 [L113] SORT_1 init_34_arg_1 = var_30; [L114] state_33 = init_34_arg_1 [L115] SORT_1 init_36_arg_1 = var_30; [L116] state_35 = init_36_arg_1 [L117] SORT_1 init_38_arg_1 = var_30; [L118] state_37 = init_38_arg_1 [L119] SORT_1 init_40_arg_1 = var_30; [L120] state_39 = init_40_arg_1 [L121] SORT_1 init_42_arg_1 = var_30; [L122] state_41 = init_42_arg_1 [L123] SORT_1 init_44_arg_1 = var_30; [L124] state_43 = init_44_arg_1 [L125] SORT_1 init_46_arg_1 = var_30; [L126] state_45 = init_46_arg_1 [L127] SORT_1 init_48_arg_1 = var_30; [L128] state_47 = init_48_arg_1 [L129] SORT_1 init_50_arg_1 = var_30; [L130] state_49 = init_50_arg_1 [L131] SORT_1 init_52_arg_1 = var_30; [L132] state_51 = init_52_arg_1 [L133] SORT_1 init_54_arg_1 = var_30; [L134] state_53 = init_54_arg_1 [L135] SORT_1 init_56_arg_1 = var_30; [L136] state_55 = init_56_arg_1 [L137] SORT_1 init_58_arg_1 = var_30; [L138] state_57 = init_58_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_6=0, state_8=0, var_101=12, var_154=15, var_169=10, var_30=0, var_5=0, var_59=0, var_61=5, var_65=2, var_69=1, var_75=4, var_77=2] [L141] input_66 = __VERIFIER_nondet_uchar() [L142] input_66 = input_66 & mask_SORT_1 [L143] input_76 = __VERIFIER_nondet_uchar() [L144] input_76 = input_76 & mask_SORT_1 [L145] input_82 = __VERIFIER_nondet_uchar() [L146] input_82 = input_82 & mask_SORT_1 [L147] input_106 = __VERIFIER_nondet_uchar() [L148] input_106 = input_106 & mask_SORT_1 [L149] input_109 = __VERIFIER_nondet_uchar() [L150] input_109 = input_109 & mask_SORT_1 [L151] input_110 = __VERIFIER_nondet_uchar() [L152] input_110 = input_110 & mask_SORT_1 [L153] input_126 = __VERIFIER_nondet_uchar() [L154] input_126 = input_126 & mask_SORT_1 [L155] input_145 = __VERIFIER_nondet_uchar() [L156] input_145 = input_145 & mask_SORT_1 [L157] input_187 = __VERIFIER_nondet_uchar() [L158] input_187 = input_187 & mask_SORT_1 [L159] input_208 = __VERIFIER_nondet_uchar() [L162] SORT_3 var_60_arg_0 = var_59; [L163] SORT_2 var_60_arg_1 = state_28; [L164] SORT_4 var_60 = ((SORT_4)var_60_arg_0 << 8) | var_60_arg_1; [L165] var_60 = var_60 & mask_SORT_4 [L166] SORT_4 var_62_arg_0 = var_60; [L167] SORT_4 var_62_arg_1 = var_61; [L168] SORT_1 var_62 = var_62_arg_0 <= var_62_arg_1; [L169] SORT_1 var_63_arg_0 = ~state_57; [L170] var_63_arg_0 = var_63_arg_0 & mask_SORT_1 [L171] SORT_1 var_63_arg_1 = ~var_62; [L172] var_63_arg_1 = var_63_arg_1 & mask_SORT_1 [L173] SORT_1 var_63 = var_63_arg_0 & var_63_arg_1; [L174] var_63 = var_63 & mask_SORT_1 [L175] SORT_1 bad_64_arg_0 = var_63; [L176] CALL __VERIFIER_assert(!(bad_64_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 04:42:30,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh --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 d7599fcf7e03749d82b28bd7d258c2b67bb77e4046198f3fa9cda552ff29f1ea --- 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-2329fc7 [2022-12-14 04:42:32,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:42:32,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:42:32,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:42:32,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:42:32,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:42:32,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:42:32,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:42:32,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:42:32,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:42:32,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:42:32,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:42:32,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:42:32,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:42:32,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:42:32,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:42:32,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:42:32,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:42:32,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:42:32,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:42:32,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:42:32,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:42:32,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:42:32,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:42:32,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:42:32,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:42:32,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:42:32,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:42:32,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:42:32,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:42:32,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:42:32,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:42:32,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:42:32,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:42:32,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:42:32,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:42:32,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:42:32,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:42:32,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:42:32,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:42:32,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:42:32,586 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 04:42:32,609 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:42:32,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:42:32,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:42:32,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:42:32,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:42:32,610 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:42:32,611 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:42:32,611 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:42:32,611 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:42:32,611 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:42:32,611 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:42:32,611 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:42:32,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:42:32,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:42:32,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:42:32,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:42:32,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:42:32,612 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 04:42:32,612 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 04:42:32,613 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 04:42:32,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:42:32,613 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:42:32,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:42:32,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:42:32,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 04:42:32,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:42:32,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:42:32,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:42:32,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:42:32,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:42:32,614 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 04:42:32,614 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 04:42:32,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:42:32,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:42:32,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 04:42:32,615 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_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7599fcf7e03749d82b28bd7d258c2b67bb77e4046198f3fa9cda552ff29f1ea [2022-12-14 04:42:32,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:42:32,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:42:32,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:42:32,834 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:42:32,834 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:42:32,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c [2022-12-14 04:42:35,375 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:42:35,535 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:42:35,535 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c [2022-12-14 04:42:35,544 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/data/cb4344be1/b957d9c8398f4b97b02c455fe127d4e3/FLAG973362f56 [2022-12-14 04:42:35,558 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/data/cb4344be1/b957d9c8398f4b97b02c455fe127d4e3 [2022-12-14 04:42:35,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:42:35,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:42:35,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:42:35,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:42:35,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:42:35,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:42:35" (1/1) ... [2022-12-14 04:42:35,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37bd720b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:35, skipping insertion in model container [2022-12-14 04:42:35,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:42:35" (1/1) ... [2022-12-14 04:42:35,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:42:35,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:42:35,726 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_64ef6f77-f1d0-4965-b260-de43764ca10f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c[1014,1027] [2022-12-14 04:42:35,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:42:35,865 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:42:35,876 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_64ef6f77-f1d0-4965-b260-de43764ca10f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.1.prop1-func-interl.c[1014,1027] [2022-12-14 04:42:35,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:42:35,964 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:42:35,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:35 WrapperNode [2022-12-14 04:42:35,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:42:35,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:42:35,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:42:35,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:42:35,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:35" (1/1) ... [2022-12-14 04:42:35,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:35" (1/1) ... [2022-12-14 04:42:36,050 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1074 [2022-12-14 04:42:36,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:42:36,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:42:36,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:42:36,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:42:36,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:35" (1/1) ... [2022-12-14 04:42:36,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:35" (1/1) ... [2022-12-14 04:42:36,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:35" (1/1) ... [2022-12-14 04:42:36,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:35" (1/1) ... [2022-12-14 04:42:36,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:35" (1/1) ... [2022-12-14 04:42:36,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:35" (1/1) ... [2022-12-14 04:42:36,098 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:35" (1/1) ... [2022-12-14 04:42:36,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:35" (1/1) ... [2022-12-14 04:42:36,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:42:36,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:42:36,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:42:36,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:42:36,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:35" (1/1) ... [2022-12-14 04:42:36,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:42:36,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:42:36,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:42:36,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:42:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:42:36,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:42:36,382 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:42:36,384 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:42:37,358 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:42:37,363 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:42:37,364 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 04:42:37,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:42:37 BoogieIcfgContainer [2022-12-14 04:42:37,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:42:37,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:42:37,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:42:37,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:42:37,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:42:35" (1/3) ... [2022-12-14 04:42:37,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0c7ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:42:37, skipping insertion in model container [2022-12-14 04:42:37,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:42:35" (2/3) ... [2022-12-14 04:42:37,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0c7ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:42:37, skipping insertion in model container [2022-12-14 04:42:37,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:42:37" (3/3) ... [2022-12-14 04:42:37,371 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.1.prop1-func-interl.c [2022-12-14 04:42:37,389 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:42:37,389 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 04:42:37,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:42:37,428 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;@312a168e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:42:37,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 04:42:37,432 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) [2022-12-14 04:42:37,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 04:42:37,436 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:37,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 04:42:37,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:37,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:37,442 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 04:42:37,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:42:37,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668725215] [2022-12-14 04:42:37,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:37,452 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 [2022-12-14 04:42:37,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:42:37,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 04:42:37,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 04:42:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:37,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 04:42:37,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:37,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:42:37,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:42:37,735 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:42:37,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668725215] [2022-12-14 04:42:37,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668725215] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:42:37,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:42:37,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 04:42:37,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937140639] [2022-12-14 04:42:37,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:42:37,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:42:37,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:42:37,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:42:37,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:42:37,762 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) [2022-12-14 04:42:37,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:42:37,917 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 04:42:37,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 04:42:37,919 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 [2022-12-14 04:42:37,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:42:37,926 INFO L225 Difference]: With dead ends: 20 [2022-12-14 04:42:37,926 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 04:42:37,929 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 [2022-12-14 04:42:37,932 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 [2022-12-14 04:42:37,933 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] [2022-12-14 04:42:37,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 04:42:37,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 04:42:37,955 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) [2022-12-14 04:42:37,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 04:42:37,956 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 04:42:37,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:42:37,956 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 04:42:37,956 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) [2022-12-14 04:42:37,957 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 04:42:37,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 04:42:37,957 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:37,957 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 04:42:37,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 04:42:38,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 04:42:38,159 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:38,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:38,160 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 04:42:38,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:42:38,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230797598] [2022-12-14 04:42:38,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:38,162 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 [2022-12-14 04:42:38,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:42:38,163 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 04:42:38,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 04:42:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:38,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-14 04:42:38,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:38,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:42:38,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:42:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:42:40,276 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:42:40,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230797598] [2022-12-14 04:42:40,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230797598] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:42:40,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [871966389] [2022-12-14 04:42:40,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:40,277 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 04:42:40,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 04:42:40,278 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 04:42:40,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 04:42:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:40,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-14 04:42:40,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:41,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:42:41,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:42:41,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:42:41,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [871966389] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:42:41,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000735880] [2022-12-14 04:42:41,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:42:41,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:41,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:42:41,393 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:42:41,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 04:42:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:42:41,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-14 04:42:41,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:42:41,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:42:42,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:42:42,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000735880] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:42:42,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 04:42:42,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 12 [2022-12-14 04:42:42,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632970699] [2022-12-14 04:42:42,431 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 04:42:42,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 04:42:42,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:42:42,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 04:42:42,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:42:42,432 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:43,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:42:43,568 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-12-14 04:42:43,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:42:43,568 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 04:42:43,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:42:43,569 INFO L225 Difference]: With dead ends: 19 [2022-12-14 04:42:43,569 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 04:42:43,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-12-14 04:42:43,571 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 04:42:43,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 18 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 04:42:43,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 04:42:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 04:42:43,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:43,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 04:42:43,576 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-12-14 04:42:43,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:42:43,576 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 04:42:43,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:42:43,576 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 04:42:43,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 04:42:43,576 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:42:43,577 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-14 04:42:43,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 04:42:43,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-12-14 04:42:43,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 04:42:44,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:44,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:42:44,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:42:44,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-12-14 04:42:44,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:42:44,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [328763383] [2022-12-14 04:42:44,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 04:42:44,189 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 [2022-12-14 04:42:44,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:42:44,190 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 04:42:44,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 04:42:44,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 04:42:44,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:42:44,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-14 04:42:44,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:42:45,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:42:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:42:48,097 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 04:42:48,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [328763383] [2022-12-14 04:42:48,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [328763383] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:42:48,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1782638845] [2022-12-14 04:42:48,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 04:42:48,098 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 04:42:48,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 04:42:48,098 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 04:42:48,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 04:42:49,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 04:42:49,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:42:49,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-14 04:42:49,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:42:50,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:42:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:42:51,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1782638845] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:42:51,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126813938] [2022-12-14 04:42:51,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 04:42:51,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:42:51,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:42:51,013 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:42:51,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 04:42:51,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 04:42:51,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:42:51,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 74 conjunts are in the unsatisfiable core [2022-12-14 04:42:51,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:42:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:42:53,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:43:31,201 WARN L233 SmtUtils]: Spent 32.77s on a formula simplification. DAG size of input: 226 DAG size of output: 204 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:43:47,562 WARN L233 SmtUtils]: Spent 14.94s on a formula simplification that was a NOOP. DAG size: 208 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:44:20,751 WARN L233 SmtUtils]: Spent 28.98s on a formula simplification. DAG size of input: 207 DAG size of output: 196 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:44:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:44:20,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126813938] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:44:20,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 04:44:20,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 12, 12] total 36 [2022-12-14 04:44:20,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182386920] [2022-12-14 04:44:20,780 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 04:44:20,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-14 04:44:20,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 04:44:20,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-14 04:44:20,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=924, Unknown=2, NotChecked=0, Total=1260 [2022-12-14 04:44:20,782 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 36 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 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) [2022-12-14 04:44:30,536 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 446 DAG size of output: 207 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:44:41,381 WARN L233 SmtUtils]: Spent 6.64s on a formula simplification that was a NOOP. DAG size: 227 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:44:41,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:41,382 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-12-14 04:44:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 04:44:41,383 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 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 14 [2022-12-14 04:44:41,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:41,383 INFO L225 Difference]: With dead ends: 28 [2022-12-14 04:44:41,383 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 04:44:41,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 108.6s TimeCoverageRelationStatistics Valid=645, Invalid=1705, Unknown=2, NotChecked=0, Total=2352 [2022-12-14 04:44:41,384 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 41 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:41,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 41 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 04:44:41,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 04:44:41,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-12-14 04:44:41,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 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) [2022-12-14 04:44:41,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-12-14 04:44:41,390 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 14 [2022-12-14 04:44:41,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:41,391 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-12-14 04:44:41,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 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) [2022-12-14 04:44:41,391 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-12-14 04:44:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 04:44:41,391 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:41,391 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2022-12-14 04:44:41,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 04:44:41,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 04:44:41,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-14 04:44:41,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 04:44:41,994 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:44:41,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash 142558665, now seen corresponding path program 3 times [2022-12-14 04:44:42,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 04:44:42,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266489122] [2022-12-14 04:44:42,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 04:44:42,000 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 [2022-12-14 04:44:42,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 04:44:42,001 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 04:44:42,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ef6f77-f1d0-4965-b260-de43764ca10f/bin/utaipan-gh47qXpMRh/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 (9)] Waiting until timeout for monitored process [2022-12-14 04:44:43,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-14 04:44:43,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:44:43,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 5162 conjuncts, 312 conjunts are in the unsatisfiable core [2022-12-14 04:44:43,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:45:46,819 WARN L233 SmtUtils]: Spent 1.04m on a formula simplification. DAG size of input: 156 DAG size of output: 148 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:46:17,268 WARN L233 SmtUtils]: Spent 26.21s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)