./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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 0879cd163762109d1ca67e19e785f1d915b0491f35724423e419b77b7fd2d6b9 --- 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 13:00:50,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:00:50,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:00:50,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:00:50,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:00:50,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:00:50,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:00:50,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:00:50,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:00:50,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:00:50,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:00:50,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:00:50,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:00:50,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:00:50,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:00:50,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:00:50,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:00:50,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:00:50,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:00:50,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:00:50,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:00:50,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:00:50,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:00:50,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:00:50,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:00:50,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:00:50,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:00:50,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:00:50,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:00:50,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:00:50,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:00:50,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:00:50,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:00:50,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:00:50,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:00:50,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:00:50,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:00:50,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:00:50,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:00:50,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:00:50,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:00:50,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 13:00:50,511 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:00:50,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:00:50,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:00:50,511 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:00:50,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:00:50,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:00:50,516 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:00:50,516 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:00:50,516 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:00:50,517 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:00:50,517 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:00:50,517 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:00:50,517 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:00:50,517 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:00:50,517 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:00:50,517 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:00:50,517 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:00:50,517 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:00:50,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:00:50,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:00:50,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:00:50,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:00:50,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:00:50,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:00:50,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:00:50,519 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:00:50,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:00:50,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:00:50,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:00:50,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:00:50,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:00:50,520 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:00:50,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:00:50,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:00:50,520 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:00:50,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:00:50,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:00:50,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:00:50,520 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_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0879cd163762109d1ca67e19e785f1d915b0491f35724423e419b77b7fd2d6b9 [2022-12-14 13:00:50,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:00:50,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:00:50,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:00:50,707 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:00:50,707 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:00:50,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c [2022-12-14 13:00:53,288 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:00:53,469 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:00:53,470 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c [2022-12-14 13:00:53,479 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/data/53cb27d11/1ddf883d2b224fd9b58b1dfc16f0e7e7/FLAG211db7d84 [2022-12-14 13:00:53,489 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/data/53cb27d11/1ddf883d2b224fd9b58b1dfc16f0e7e7 [2022-12-14 13:00:53,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:00:53,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:00:53,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:00:53,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:00:53,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:00:53,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:00:53" (1/1) ... [2022-12-14 13:00:53,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da3970e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:00:53, skipping insertion in model container [2022-12-14 13:00:53,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:00:53" (1/1) ... [2022-12-14 13:00:53,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:00:53,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:00:53,661 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_80b31fe0-29b5-46cf-9f24-ef0264b9528e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c[1014,1027] [2022-12-14 13:00:53,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:00:53,842 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:00:53,852 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_80b31fe0-29b5-46cf-9f24-ef0264b9528e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c[1014,1027] [2022-12-14 13:00:53,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:00:53,960 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:00:53,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:00:53 WrapperNode [2022-12-14 13:00:53,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:00:53,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:00:53,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:00:53,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:00:53,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:00:53" (1/1) ... [2022-12-14 13:00:53,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:00:53" (1/1) ... [2022-12-14 13:00:54,062 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1592 [2022-12-14 13:00:54,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:00:54,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:00:54,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:00:54,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:00:54,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:00:53" (1/1) ... [2022-12-14 13:00:54,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:00:53" (1/1) ... [2022-12-14 13:00:54,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:00:53" (1/1) ... [2022-12-14 13:00:54,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:00:53" (1/1) ... [2022-12-14 13:00:54,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:00:53" (1/1) ... [2022-12-14 13:00:54,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:00:53" (1/1) ... [2022-12-14 13:00:54,119 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:00:53" (1/1) ... [2022-12-14 13:00:54,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:00:53" (1/1) ... [2022-12-14 13:00:54,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:00:54,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:00:54,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:00:54,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:00:54,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:00:53" (1/1) ... [2022-12-14 13:00:54,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:00:54,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:00:54,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:00:54,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:00:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:00:54,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:00:54,445 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:00:54,447 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:03:20,242 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:03:20,261 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:03:20,261 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:03:20,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:03:20 BoogieIcfgContainer [2022-12-14 13:03:20,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:03:20,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:03:20,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:03:20,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:03:20,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:00:53" (1/3) ... [2022-12-14 13:03:20,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2f4c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:03:20, skipping insertion in model container [2022-12-14 13:03:20,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:00:53" (2/3) ... [2022-12-14 13:03:20,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2f4c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:03:20, skipping insertion in model container [2022-12-14 13:03:20,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:03:20" (3/3) ... [2022-12-14 13:03:20,269 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bakery.3.prop1-func-interl.c [2022-12-14 13:03:20,283 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:03:20,283 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:03:20,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:03:20,322 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;@40bbc007, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:03:20,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:03:20,325 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 13:03:20,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 13:03:20,331 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:03:20,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 13:03:20,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:03:20,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:03:20,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 13:03:20,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:03:20,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521861447] [2022-12-14 13:03:20,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:03:20,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:03:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:03:20,592 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 13:03:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:03:20,734 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 13:03:20,735 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 13:03:20,736 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 13:03:20,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:03:20,741 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 13:03:20,744 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:03:20,764 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 13:03:20,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:03:20 BoogieIcfgContainer [2022-12-14 13:03:20,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:03:20,775 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:03:20,775 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:03:20,775 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:03:20,776 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:03:20" (3/4) ... [2022-12-14 13:03:20,778 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 13:03:20,778 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:03:20,780 INFO L158 Benchmark]: Toolchain (without parser) took 147286.86ms. Allocated memory was 136.3MB in the beginning and 977.3MB in the end (delta: 841.0MB). Free memory was 94.5MB in the beginning and 663.1MB in the end (delta: -568.6MB). Peak memory consumption was 273.8MB. Max. memory is 16.1GB. [2022-12-14 13:03:20,780 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 136.3MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:03:20,781 INFO L158 Benchmark]: CACSL2BoogieTranslator took 467.23ms. Allocated memory was 136.3MB in the beginning and 165.7MB in the end (delta: 29.4MB). Free memory was 94.3MB in the beginning and 125.0MB in the end (delta: -30.7MB). Peak memory consumption was 64.3MB. Max. memory is 16.1GB. [2022-12-14 13:03:20,781 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.00ms. Allocated memory is still 165.7MB. Free memory was 125.0MB in the beginning and 105.3MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 13:03:20,782 INFO L158 Benchmark]: Boogie Preprocessor took 75.55ms. Allocated memory is still 165.7MB. Free memory was 105.3MB in the beginning and 96.0MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 13:03:20,782 INFO L158 Benchmark]: RCFGBuilder took 146124.92ms. Allocated memory was 165.7MB in the beginning and 977.3MB in the end (delta: 811.6MB). Free memory was 96.0MB in the beginning and 711.4MB in the end (delta: -615.3MB). Peak memory consumption was 576.6MB. Max. memory is 16.1GB. [2022-12-14 13:03:20,783 INFO L158 Benchmark]: TraceAbstraction took 509.77ms. Allocated memory is still 977.3MB. Free memory was 711.4MB in the beginning and 664.2MB in the end (delta: 47.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2022-12-14 13:03:20,783 INFO L158 Benchmark]: Witness Printer took 3.53ms. Allocated memory is still 977.3MB. Free memory was 664.2MB in the beginning and 663.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:03:20,786 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 136.3MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 467.23ms. Allocated memory was 136.3MB in the beginning and 165.7MB in the end (delta: 29.4MB). Free memory was 94.3MB in the beginning and 125.0MB in the end (delta: -30.7MB). Peak memory consumption was 64.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.00ms. Allocated memory is still 165.7MB. Free memory was 125.0MB in the beginning and 105.3MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.55ms. Allocated memory is still 165.7MB. Free memory was 105.3MB in the beginning and 96.0MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 146124.92ms. Allocated memory was 165.7MB in the beginning and 977.3MB in the end (delta: 811.6MB). Free memory was 96.0MB in the beginning and 711.4MB in the end (delta: -615.3MB). Peak memory consumption was 576.6MB. Max. memory is 16.1GB. * TraceAbstraction took 509.77ms. Allocated memory is still 977.3MB. Free memory was 711.4MB in the beginning and 664.2MB in the end (delta: 47.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Witness Printer took 3.53ms. Allocated memory is still 977.3MB. Free memory was 664.2MB in the beginning and 663.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 227, overapproximation of bitwiseAnd at line 162. 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_4 var_63 = 1; [L40] const SORT_4 var_64 = 0; [L41] const SORT_2 var_74 = 0; [L42] const SORT_2 var_76 = 1; [L43] const SORT_3 var_91 = 0; [L44] const SORT_4 var_227 = 3; [L45] const SORT_2 var_239 = 3; [L46] const SORT_4 var_241 = 4; [L47] const SORT_4 var_343 = 2; [L49] SORT_1 input_73; [L50] SORT_1 input_75; [L51] SORT_1 input_80; [L52] SORT_1 input_81; [L53] SORT_1 input_85; [L54] SORT_1 input_86; [L55] SORT_1 input_90; [L56] SORT_1 input_98; [L57] SORT_1 input_105; [L58] SORT_1 input_112; [L59] SORT_1 input_116; [L60] SORT_1 input_117; [L61] SORT_1 input_131; [L62] SORT_1 input_135; [L63] SORT_1 input_136; [L64] SORT_1 input_150; [L65] SORT_1 input_154; [L66] SORT_1 input_155; [L67] SORT_1 input_176; [L68] SORT_1 input_179; [L69] SORT_1 input_195; [L70] SORT_1 input_198; [L71] SORT_1 input_214; [L72] SORT_1 input_217; [L74] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L75] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L79] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L80] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L81] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L82] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L83] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L84] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L85] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L86] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_2 init_7_arg_1 = var_5; [L104] state_6 = init_7_arg_1 [L105] SORT_2 init_9_arg_1 = var_5; [L106] state_8 = init_9_arg_1 [L107] SORT_2 init_11_arg_1 = var_5; [L108] state_10 = init_11_arg_1 [L109] SORT_2 init_13_arg_1 = var_5; [L110] state_12 = init_13_arg_1 [L111] SORT_2 init_15_arg_1 = var_5; [L112] state_14 = init_15_arg_1 [L113] SORT_2 init_17_arg_1 = var_5; [L114] state_16 = init_17_arg_1 [L115] SORT_2 init_19_arg_1 = var_5; [L116] state_18 = init_19_arg_1 [L117] SORT_2 init_21_arg_1 = var_5; [L118] state_20 = init_21_arg_1 [L119] SORT_2 init_23_arg_1 = var_5; [L120] state_22 = init_23_arg_1 [L121] SORT_2 init_25_arg_1 = var_5; [L122] state_24 = init_25_arg_1 [L123] SORT_2 init_27_arg_1 = var_5; [L124] state_26 = init_27_arg_1 [L125] SORT_2 init_29_arg_1 = var_5; [L126] state_28 = init_29_arg_1 [L127] SORT_1 init_32_arg_1 = var_30; [L128] state_31 = init_32_arg_1 [L129] SORT_1 init_34_arg_1 = var_30; [L130] state_33 = init_34_arg_1 [L131] SORT_1 init_36_arg_1 = var_30; [L132] state_35 = init_36_arg_1 [L133] SORT_1 init_38_arg_1 = var_30; [L134] state_37 = init_38_arg_1 [L135] SORT_1 init_40_arg_1 = var_30; [L136] state_39 = init_40_arg_1 [L137] SORT_1 init_42_arg_1 = var_30; [L138] state_41 = init_42_arg_1 [L139] SORT_1 init_44_arg_1 = var_30; [L140] state_43 = init_44_arg_1 [L141] SORT_1 init_46_arg_1 = var_30; [L142] state_45 = init_46_arg_1 [L143] SORT_1 init_48_arg_1 = var_30; [L144] state_47 = init_48_arg_1 [L145] SORT_1 init_50_arg_1 = var_30; [L146] state_49 = init_50_arg_1 [L147] SORT_1 init_52_arg_1 = var_30; [L148] state_51 = init_52_arg_1 [L149] SORT_1 init_54_arg_1 = var_30; [L150] state_53 = init_54_arg_1 [L151] SORT_1 init_56_arg_1 = var_30; [L152] state_55 = init_56_arg_1 [L153] SORT_1 init_58_arg_1 = var_30; [L154] state_57 = init_58_arg_1 [L155] SORT_1 init_60_arg_1 = var_30; [L156] state_59 = init_60_arg_1 [L157] SORT_1 init_62_arg_1 = var_30; [L158] state_61 = init_62_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_60_arg_1=0, init_62_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_59=0, state_6=0, state_61=0, state_8=0, var_227=3, var_239=3, var_241=4, var_30=0, var_343=2, var_5=0, var_63=1, var_64=0, var_74=0, var_76=1, var_91=0] [L161] input_73 = __VERIFIER_nondet_uchar() [L162] input_73 = input_73 & mask_SORT_1 [L163] input_75 = __VERIFIER_nondet_uchar() [L164] input_75 = input_75 & mask_SORT_1 [L165] input_80 = __VERIFIER_nondet_uchar() [L166] input_80 = input_80 & mask_SORT_1 [L167] input_81 = __VERIFIER_nondet_uchar() [L168] input_81 = input_81 & mask_SORT_1 [L169] input_85 = __VERIFIER_nondet_uchar() [L170] input_85 = input_85 & mask_SORT_1 [L171] input_86 = __VERIFIER_nondet_uchar() [L172] input_86 = input_86 & mask_SORT_1 [L173] input_90 = __VERIFIER_nondet_uchar() [L174] input_90 = input_90 & mask_SORT_1 [L175] input_98 = __VERIFIER_nondet_uchar() [L176] input_98 = input_98 & mask_SORT_1 [L177] input_105 = __VERIFIER_nondet_uchar() [L178] input_105 = input_105 & mask_SORT_1 [L179] input_112 = __VERIFIER_nondet_uchar() [L180] input_112 = input_112 & mask_SORT_1 [L181] input_116 = __VERIFIER_nondet_uchar() [L182] input_116 = input_116 & mask_SORT_1 [L183] input_117 = __VERIFIER_nondet_uchar() [L184] input_117 = input_117 & mask_SORT_1 [L185] input_131 = __VERIFIER_nondet_uchar() [L186] input_131 = input_131 & mask_SORT_1 [L187] input_135 = __VERIFIER_nondet_uchar() [L188] input_135 = input_135 & mask_SORT_1 [L189] input_136 = __VERIFIER_nondet_uchar() [L190] input_136 = input_136 & mask_SORT_1 [L191] input_150 = __VERIFIER_nondet_uchar() [L192] input_150 = input_150 & mask_SORT_1 [L193] input_154 = __VERIFIER_nondet_uchar() [L194] input_154 = input_154 & mask_SORT_1 [L195] input_155 = __VERIFIER_nondet_uchar() [L196] input_155 = input_155 & mask_SORT_1 [L197] input_176 = __VERIFIER_nondet_uchar() [L198] input_179 = __VERIFIER_nondet_uchar() [L199] input_195 = __VERIFIER_nondet_uchar() [L200] input_198 = __VERIFIER_nondet_uchar() [L201] input_214 = __VERIFIER_nondet_uchar() [L202] input_217 = __VERIFIER_nondet_uchar() [L205] SORT_1 var_65_arg_0 = state_39; [L206] SORT_4 var_65_arg_1 = var_63; [L207] SORT_4 var_65_arg_2 = var_64; [L208] SORT_4 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L209] SORT_1 var_66_arg_0 = state_49; [L210] SORT_4 var_66_arg_1 = var_63; [L211] SORT_4 var_66_arg_2 = var_64; [L212] SORT_4 var_66 = var_66_arg_0 ? var_66_arg_1 : var_66_arg_2; [L213] SORT_4 var_67_arg_0 = var_65; [L214] SORT_4 var_67_arg_1 = var_66; [L215] SORT_4 var_67 = var_67_arg_0 + var_67_arg_1; [L216] SORT_1 var_68_arg_0 = state_59; [L217] SORT_4 var_68_arg_1 = var_63; [L218] SORT_4 var_68_arg_2 = var_64; [L219] SORT_4 var_68 = var_68_arg_0 ? var_68_arg_1 : var_68_arg_2; [L220] SORT_4 var_69_arg_0 = var_67; [L221] SORT_4 var_69_arg_1 = var_68; [L222] SORT_4 var_69 = var_69_arg_0 + var_69_arg_1; [L223] var_69 = var_69 & mask_SORT_4 [L224] SORT_4 var_70_arg_0 = var_69; [L225] SORT_4 var_70_arg_1 = var_63; [L226] SORT_1 var_70 = var_70_arg_0 <= var_70_arg_1; [L227] SORT_1 var_71_arg_0 = ~state_61; [L228] var_71_arg_0 = var_71_arg_0 & mask_SORT_1 [L229] SORT_1 var_71_arg_1 = ~var_70; [L230] var_71_arg_1 = var_71_arg_1 & mask_SORT_1 [L231] SORT_1 var_71 = var_71_arg_0 & var_71_arg_1; [L232] var_71 = var_71 & mask_SORT_1 [L233] SORT_1 bad_72_arg_0 = var_71; [L234] CALL __VERIFIER_assert(!(bad_72_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s 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 13:03:20,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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 0879cd163762109d1ca67e19e785f1d915b0491f35724423e419b77b7fd2d6b9 --- 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 13:03:22,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:03:22,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:03:22,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:03:22,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:03:22,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:03:22,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:03:22,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:03:22,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:03:22,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:03:22,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:03:22,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:03:22,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:03:22,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:03:22,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:03:22,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:03:22,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:03:22,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:03:22,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:03:22,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:03:22,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:03:22,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:03:22,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:03:22,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:03:22,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:03:22,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:03:22,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:03:22,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:03:22,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:03:22,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:03:22,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:03:22,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:03:22,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:03:22,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:03:22,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:03:22,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:03:22,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:03:22,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:03:22,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:03:22,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:03:22,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:03:22,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 13:03:22,413 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:03:22,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:03:22,414 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:03:22,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:03:22,414 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:03:22,414 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:03:22,415 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:03:22,415 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:03:22,415 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:03:22,415 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:03:22,415 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:03:22,415 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:03:22,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:03:22,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:03:22,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:03:22,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:03:22,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:03:22,417 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 13:03:22,417 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 13:03:22,417 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 13:03:22,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:03:22,417 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:03:22,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:03:22,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:03:22,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 13:03:22,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:03:22,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:03:22,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:03:22,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:03:22,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:03:22,419 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 13:03:22,419 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 13:03:22,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:03:22,419 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:03:22,419 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 13:03:22,419 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_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0879cd163762109d1ca67e19e785f1d915b0491f35724423e419b77b7fd2d6b9 [2022-12-14 13:03:22,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:03:22,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:03:22,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:03:22,649 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:03:22,649 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:03:22,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c [2022-12-14 13:03:25,175 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:03:25,379 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:03:25,380 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c [2022-12-14 13:03:25,390 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/data/ee1cf88d6/30d7a2bd04d8457ba2b8901a1788472e/FLAG71a681518 [2022-12-14 13:03:25,402 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/data/ee1cf88d6/30d7a2bd04d8457ba2b8901a1788472e [2022-12-14 13:03:25,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:03:25,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:03:25,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:03:25,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:03:25,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:03:25,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:03:25" (1/1) ... [2022-12-14 13:03:25,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d322ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:25, skipping insertion in model container [2022-12-14 13:03:25,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:03:25" (1/1) ... [2022-12-14 13:03:25,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:03:25,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:03:25,570 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_80b31fe0-29b5-46cf-9f24-ef0264b9528e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c[1014,1027] [2022-12-14 13:03:25,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:03:25,786 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:03:25,795 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_80b31fe0-29b5-46cf-9f24-ef0264b9528e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c[1014,1027] [2022-12-14 13:03:25,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:03:25,898 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:03:25,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:25 WrapperNode [2022-12-14 13:03:25,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:03:25,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:03:25,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:03:25,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:03:25,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:25" (1/1) ... [2022-12-14 13:03:25,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:25" (1/1) ... [2022-12-14 13:03:25,986 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1592 [2022-12-14 13:03:25,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:03:25,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:03:25,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:03:25,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:03:25,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:25" (1/1) ... [2022-12-14 13:03:25,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:25" (1/1) ... [2022-12-14 13:03:26,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:25" (1/1) ... [2022-12-14 13:03:26,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:25" (1/1) ... [2022-12-14 13:03:26,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:25" (1/1) ... [2022-12-14 13:03:26,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:25" (1/1) ... [2022-12-14 13:03:26,055 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:25" (1/1) ... [2022-12-14 13:03:26,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:25" (1/1) ... [2022-12-14 13:03:26,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:03:26,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:03:26,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:03:26,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:03:26,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:25" (1/1) ... [2022-12-14 13:03:26,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:03:26,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:03:26,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:03:26,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:03:26,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:03:26,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:03:26,398 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:03:26,400 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:03:28,078 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:03:28,084 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:03:28,084 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:03:28,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:03:28 BoogieIcfgContainer [2022-12-14 13:03:28,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:03:28,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:03:28,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:03:28,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:03:28,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:03:25" (1/3) ... [2022-12-14 13:03:28,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425da9d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:03:28, skipping insertion in model container [2022-12-14 13:03:28,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:03:25" (2/3) ... [2022-12-14 13:03:28,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425da9d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:03:28, skipping insertion in model container [2022-12-14 13:03:28,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:03:28" (3/3) ... [2022-12-14 13:03:28,094 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bakery.3.prop1-func-interl.c [2022-12-14 13:03:28,107 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:03:28,108 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:03:28,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:03:28,150 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;@67c7fbec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:03:28,151 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:03:28,154 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 13:03:28,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 13:03:28,159 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:03:28,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 13:03:28,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:03:28,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:03:28,164 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 13:03:28,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:03:28,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115420326] [2022-12-14 13:03:28,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:03:28,175 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 13:03:28,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:03:28,176 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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 13:03:28,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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 13:03:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:03:28,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 13:03:28,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:03:28,570 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 13:03:28,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:03:28,571 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:03:28,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115420326] [2022-12-14 13:03:28,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115420326] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:03:28,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:03:28,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:03:28,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561907003] [2022-12-14 13:03:28,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:03:28,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:03:28,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:03:28,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:03:28,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:03:28,599 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 13:03:28,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:03:28,820 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 13:03:28,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:03:28,822 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 13:03:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:03:28,827 INFO L225 Difference]: With dead ends: 20 [2022-12-14 13:03:28,827 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 13:03:28,829 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 13:03:28,831 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:03:28,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:03:28,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 13:03:28,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 13:03:28,853 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 13:03:28,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 13:03:28,854 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 13:03:28,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:03:28,854 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 13:03:28,854 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 13:03:28,854 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 13:03:28,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 13:03:28,855 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:03:28,855 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 13:03:28,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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 13:03:29,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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 13:03:29,056 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:03:29,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:03:29,056 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 13:03:29,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:03:29,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896466581] [2022-12-14 13:03:29,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:03:29,059 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 13:03:29,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:03:29,060 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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 13:03:29,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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 13:03:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:03:29,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 125 conjunts are in the unsatisfiable core [2022-12-14 13:03:29,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:03:30,642 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 13:03:30,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:03:56,089 WARN L233 SmtUtils]: Spent 23.22s on a formula simplification that was a NOOP. DAG size: 261 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:03:56,584 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 13:03:56,585 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:03:56,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896466581] [2022-12-14 13:03:56,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896466581] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:03:56,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1236991920] [2022-12-14 13:03:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:03:56,585 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:03:56,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:03:56,601 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:03:56,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 13:03:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:03:57,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 127 conjunts are in the unsatisfiable core [2022-12-14 13:03:57,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:03:58,629 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 13:03:58,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:04:18,743 WARN L233 SmtUtils]: Spent 17.53s on a formula simplification. DAG size of input: 86 DAG size of output: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:05:07,604 WARN L233 SmtUtils]: Spent 41.93s on a formula simplification that was a NOOP. DAG size: 278 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:05:08,176 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 13:05:08,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1236991920] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:05:08,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745657421] [2022-12-14 13:05:08,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:05:08,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:05:08,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:05:08,178 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:05:08,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:05:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:05:08,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 130 conjunts are in the unsatisfiable core [2022-12-14 13:05:08,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:05:09,779 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 13:05:09,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:07:09,341 WARN L233 SmtUtils]: Spent 1.88m on a formula simplification. DAG size of input: 125 DAG size of output: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:08:32,676 WARN L233 SmtUtils]: Spent 1.16m on a formula simplification that was a NOOP. DAG size: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:09:49,112 WARN L233 SmtUtils]: Spent 1.15m on a formula simplification that was a NOOP. DAG size: 309 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:09:49,704 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 13:09:49,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745657421] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:09:49,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 13:09:49,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 16 [2022-12-14 13:09:49,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220883543] [2022-12-14 13:09:49,705 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 13:09:49,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 13:09:49,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:09:49,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 13:09:49,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=165, Unknown=11, NotChecked=0, Total=240 [2022-12-14 13:09:49,706 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 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 13:09:52,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:09:52,542 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 13:09:52,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 13:09:52,543 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 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 13:09:52,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:09:52,543 INFO L225 Difference]: With dead ends: 16 [2022-12-14 13:09:52,543 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 13:09:52,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 372.3s TimeCoverageRelationStatistics Valid=104, Invalid=227, Unknown=11, NotChecked=0, Total=342 [2022-12-14 13:09:52,544 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 13:09:52,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 29 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 13:09:52,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 13:09:52,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-12-14 13:09:52,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:09:52,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 13:09:52,547 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-14 13:09:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:09:52,548 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-14 13:09:52,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 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 13:09:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 13:09:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 13:09:52,548 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:09:52,548 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 13:09:52,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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 13:09:52,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 13:09:52,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 13:09:53,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 13:09:53,152 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:09:53,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:09:53,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-14 13:09:53,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:09:53,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429221289] [2022-12-14 13:09:53,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 13:09:53,158 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 13:09:53,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:09:53,159 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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 13:09:53,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/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 13:09:53,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 13:09:53,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:09:53,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 215 conjunts are in the unsatisfiable core [2022-12-14 13:09:53,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:10:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:10:00,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:10:17,014 WARN L233 SmtUtils]: Spent 15.76s on a formula simplification. DAG size of input: 98 DAG size of output: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:10:55,725 WARN L233 SmtUtils]: Spent 37.58s on a formula simplification that was a NOOP. DAG size: 221 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:11:56,410 WARN L233 SmtUtils]: Spent 53.22s on a formula simplification that was a NOOP. DAG size: 919 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:11:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:11:57,436 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:11:57,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429221289] [2022-12-14 13:11:57,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429221289] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:11:57,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [802037130] [2022-12-14 13:11:57,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 13:11:57,436 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:11:57,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:11:57,437 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:11:57,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 13:11:58,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 13:11:58,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:11:58,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 304 conjunts are in the unsatisfiable core [2022-12-14 13:11:58,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:12:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:12:19,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:13:05,136 WARN L233 SmtUtils]: Spent 44.06s on a formula simplification. DAG size of input: 86 DAG size of output: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:13:53,203 WARN L233 SmtUtils]: Spent 39.94s on a formula simplification that was a NOOP. DAG size: 284 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:15:29,408 WARN L233 SmtUtils]: Spent 1.14m on a formula simplification that was a NOOP. DAG size: 1371 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:15:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:15:31,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [802037130] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:15:31,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024190954] [2022-12-14 13:15:31,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 13:15:31,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:15:31,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:31,051 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:15:31,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b31fe0-29b5-46cf-9f24-ef0264b9528e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 13:15:31,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 13:15:31,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:15:31,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 219 conjunts are in the unsatisfiable core [2022-12-14 13:15:31,652 INFO L286 TraceCheckSpWp]: Computing forward predicates...