./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.2.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e7b2877a212b286a1fb00f44568c712a06f3fa142b3aa5804b6a5fc40dc5b009 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:13:20,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:13:20,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:13:20,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:13:20,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:13:20,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:13:20,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:13:20,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:13:20,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:13:20,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:13:20,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:13:20,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:13:20,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:13:20,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:13:20,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:13:20,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:13:20,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:13:20,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:13:20,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:13:20,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:13:20,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:13:20,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:13:20,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:13:20,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:13:20,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:13:20,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:13:20,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:13:20,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:13:20,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:13:20,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:13:20,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:13:20,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:13:20,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:13:20,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:13:20,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:13:20,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:13:20,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:13:20,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:13:20,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:13:20,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:13:20,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:13:20,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:13:20,341 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:13:20,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:13:20,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:13:20,342 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:13:20,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:13:20,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:13:20,344 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:13:20,344 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:13:20,345 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:13:20,345 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:13:20,346 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:13:20,346 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:13:20,347 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:13:20,347 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:13:20,347 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:13:20,347 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:13:20,347 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:13:20,348 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:13:20,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:13:20,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:13:20,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:13:20,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:13:20,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:13:20,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:13:20,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:13:20,350 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:13:20,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:13:20,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:13:20,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:13:20,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:13:20,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:13:20,352 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:13:20,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:13:20,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:13:20,353 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:13:20,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:13:20,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:13:20,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:13:20,354 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_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7b2877a212b286a1fb00f44568c712a06f3fa142b3aa5804b6a5fc40dc5b009 [2022-11-26 00:13:20,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:13:20,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:13:20,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:13:20,733 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:13:20,734 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:13:20,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.2.prop1-func-interl.c [2022-11-26 00:13:24,160 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:13:24,600 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:13:24,601 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.2.prop1-func-interl.c [2022-11-26 00:13:24,622 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/data/f03153cf8/cd91d5d73d444b25a1ec9761e76e3f7b/FLAGddd574e52 [2022-11-26 00:13:24,643 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/data/f03153cf8/cd91d5d73d444b25a1ec9761e76e3f7b [2022-11-26 00:13:24,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:13:24,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:13:24,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:13:24,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:13:24,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:13:24,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:13:24" (1/1) ... [2022-11-26 00:13:24,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@746e82c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:24, skipping insertion in model container [2022-11-26 00:13:24,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:13:24" (1/1) ... [2022-11-26 00:13:24,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:13:24,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:13:25,026 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_a47adf0f-217e-473f-84f0-5b38a346fd94/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.2.prop1-func-interl.c[1014,1027] [2022-11-26 00:13:25,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:13:25,547 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:13:25,559 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_a47adf0f-217e-473f-84f0-5b38a346fd94/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.2.prop1-func-interl.c[1014,1027] [2022-11-26 00:13:25,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:13:25,769 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:13:25,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:25 WrapperNode [2022-11-26 00:13:25,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:13:25,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:13:25,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:13:25,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:13:25,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:25" (1/1) ... [2022-11-26 00:13:25,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:25" (1/1) ... [2022-11-26 00:13:26,037 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2182 [2022-11-26 00:13:26,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:13:26,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:13:26,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:13:26,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:13:26,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:25" (1/1) ... [2022-11-26 00:13:26,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:25" (1/1) ... [2022-11-26 00:13:26,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:25" (1/1) ... [2022-11-26 00:13:26,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:25" (1/1) ... [2022-11-26 00:13:26,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:25" (1/1) ... [2022-11-26 00:13:26,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:25" (1/1) ... [2022-11-26 00:13:26,288 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:25" (1/1) ... [2022-11-26 00:13:26,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:25" (1/1) ... [2022-11-26 00:13:26,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:13:26,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:13:26,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:13:26,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:13:26,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:25" (1/1) ... [2022-11-26 00:13:26,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:13:26,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:13:26,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:13:26,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:13:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:13:26,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:13:27,189 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:13:27,191 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:21:28,353 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:21:28,433 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:21:28,433 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:21:28,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:21:28 BoogieIcfgContainer [2022-11-26 00:21:28,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:21:28,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:21:28,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:21:28,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:21:28,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:13:24" (1/3) ... [2022-11-26 00:21:28,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f2a55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:21:28, skipping insertion in model container [2022-11-26 00:21:28,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:25" (2/3) ... [2022-11-26 00:21:28,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f2a55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:21:28, skipping insertion in model container [2022-11-26 00:21:28,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:21:28" (3/3) ... [2022-11-26 00:21:28,445 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mcs.2.prop1-func-interl.c [2022-11-26 00:21:28,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:21:28,483 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:21:28,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:21:28,553 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;@102b31bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:21:28,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:21:28,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:21:28,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:21:28,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:21:28,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:21:28,569 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:21:28,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:21:28,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-26 00:21:28,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:21:28,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501156296] [2022-11-26 00:21:28,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:21:28,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:21:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:21:28,995 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:21:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:21:29,184 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:21:29,195 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:21:29,197 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:21:29,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:21:29,204 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:21:29,209 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:21:29,253 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:21:29,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:21:29 BoogieIcfgContainer [2022-11-26 00:21:29,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:21:29,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:21:29,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:21:29,282 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:21:29,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:21:28" (3/4) ... [2022-11-26 00:21:29,290 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:21:29,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:21:29,292 INFO L158 Benchmark]: Toolchain (without parser) took 484640.88ms. Allocated memory was 163.6MB in the beginning and 916.5MB in the end (delta: 752.9MB). Free memory was 117.0MB in the beginning and 312.7MB in the end (delta: -195.7MB). Peak memory consumption was 559.1MB. Max. memory is 16.1GB. [2022-11-26 00:21:29,292 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:21:29,293 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1116.88ms. Allocated memory is still 163.6MB. Free memory was 116.8MB in the beginning and 73.7MB in the end (delta: 43.1MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2022-11-26 00:21:29,295 INFO L158 Benchmark]: Boogie Procedure Inliner took 266.46ms. Allocated memory is still 163.6MB. Free memory was 73.7MB in the beginning and 46.5MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-26 00:21:29,296 INFO L158 Benchmark]: Boogie Preprocessor took 322.39ms. Allocated memory is still 163.6MB. Free memory was 46.5MB in the beginning and 106.5MB in the end (delta: -60.0MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2022-11-26 00:21:29,298 INFO L158 Benchmark]: RCFGBuilder took 482073.49ms. Allocated memory was 163.6MB in the beginning and 916.5MB in the end (delta: 752.9MB). Free memory was 106.5MB in the beginning and 367.2MB in the end (delta: -260.7MB). Peak memory consumption was 563.5MB. Max. memory is 16.1GB. [2022-11-26 00:21:29,299 INFO L158 Benchmark]: TraceAbstraction took 841.07ms. Allocated memory is still 916.5MB. Free memory was 366.2MB in the beginning and 312.7MB in the end (delta: 53.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-11-26 00:21:29,299 INFO L158 Benchmark]: Witness Printer took 9.51ms. Allocated memory is still 916.5MB. Free memory is still 312.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:21:29,302 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1116.88ms. Allocated memory is still 163.6MB. Free memory was 116.8MB in the beginning and 73.7MB in the end (delta: 43.1MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 266.46ms. Allocated memory is still 163.6MB. Free memory was 73.7MB in the beginning and 46.5MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 322.39ms. Allocated memory is still 163.6MB. Free memory was 46.5MB in the beginning and 106.5MB in the end (delta: -60.0MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * RCFGBuilder took 482073.49ms. Allocated memory was 163.6MB in the beginning and 916.5MB in the end (delta: 752.9MB). Free memory was 106.5MB in the beginning and 367.2MB in the end (delta: -260.7MB). Peak memory consumption was 563.5MB. Max. memory is 16.1GB. * TraceAbstraction took 841.07ms. Allocated memory is still 916.5MB. Free memory was 366.2MB in the beginning and 312.7MB in the end (delta: 53.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * Witness Printer took 9.51ms. Allocated memory is still 916.5MB. Free memory is still 312.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 287, overapproximation of bitwiseAnd at line 213. 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 - 32); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (32 - 1); [L34] const SORT_2 var_4 = 0; [L35] const SORT_1 var_25 = 0; [L36] const SORT_3 var_88 = 1; [L37] const SORT_3 var_89 = 0; [L38] const SORT_2 var_98 = 255; [L39] const SORT_2 var_100 = 0; [L40] const SORT_2 var_103 = 2; [L41] const SORT_2 var_107 = 1; [L43] SORT_1 input_99; [L44] SORT_1 input_104; [L45] SORT_1 input_108; [L46] SORT_1 input_111; [L47] SORT_1 input_123; [L48] SORT_1 input_135; [L49] SORT_1 input_147; [L50] SORT_1 input_148; [L51] SORT_1 input_152; [L52] SORT_1 input_153; [L53] SORT_1 input_157; [L54] SORT_1 input_158; [L55] SORT_1 input_162; [L56] SORT_1 input_163; [L57] SORT_1 input_164; [L58] SORT_1 input_165; [L59] SORT_1 input_166; [L60] SORT_1 input_167; [L61] SORT_1 input_191; [L62] SORT_1 input_193; [L63] SORT_1 input_203; [L64] SORT_1 input_208; [L65] SORT_1 input_210; [L66] SORT_1 input_215; [L67] SORT_1 input_219; [L68] SORT_1 input_234; [L69] SORT_1 input_236; [L70] SORT_1 input_246; [L71] SORT_1 input_251; [L72] SORT_1 input_253; [L73] SORT_1 input_258; [L74] SORT_1 input_262; [L75] SORT_1 input_277; [L76] SORT_1 input_279; [L77] SORT_1 input_289; [L78] SORT_1 input_294; [L79] SORT_1 input_296; [L80] SORT_1 input_301; [L81] SORT_1 input_305; [L83] SORT_2 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L84] SORT_2 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L85] SORT_2 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L86] SORT_2 state_11 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L87] SORT_2 state_13 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L88] SORT_2 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L89] SORT_2 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L90] SORT_2 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L91] SORT_2 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L92] SORT_2 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L93] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_1 state_40 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_1 state_42 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] SORT_1 state_44 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_1 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_1 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L105] SORT_1 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] SORT_1 state_52 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L107] SORT_1 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] SORT_1 state_56 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L109] SORT_1 state_58 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L110] SORT_1 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L111] SORT_1 state_62 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L112] SORT_1 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L113] SORT_1 state_66 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L114] SORT_1 state_68 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L115] SORT_1 state_70 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] SORT_1 state_72 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L117] SORT_1 state_74 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] SORT_1 state_76 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L119] SORT_1 state_78 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L120] SORT_1 state_80 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L121] SORT_1 state_82 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L122] SORT_1 state_84 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] SORT_1 state_86 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L125] SORT_2 init_6_arg_1 = var_4; [L126] state_5 = init_6_arg_1 [L127] SORT_2 init_8_arg_1 = var_4; [L128] state_7 = init_8_arg_1 [L129] SORT_2 init_10_arg_1 = var_4; [L130] state_9 = init_10_arg_1 [L131] SORT_2 init_12_arg_1 = var_4; [L132] state_11 = init_12_arg_1 [L133] SORT_2 init_14_arg_1 = var_4; [L134] state_13 = init_14_arg_1 [L135] SORT_2 init_16_arg_1 = var_4; [L136] state_15 = init_16_arg_1 [L137] SORT_2 init_18_arg_1 = var_4; [L138] state_17 = init_18_arg_1 [L139] SORT_2 init_20_arg_1 = var_4; [L140] state_19 = init_20_arg_1 [L141] SORT_2 init_22_arg_1 = var_4; [L142] state_21 = init_22_arg_1 [L143] SORT_2 init_24_arg_1 = var_4; [L144] state_23 = init_24_arg_1 [L145] SORT_1 init_27_arg_1 = var_25; [L146] state_26 = init_27_arg_1 [L147] SORT_1 init_29_arg_1 = var_25; [L148] state_28 = init_29_arg_1 [L149] SORT_1 init_31_arg_1 = var_25; [L150] state_30 = init_31_arg_1 [L151] SORT_1 init_33_arg_1 = var_25; [L152] state_32 = init_33_arg_1 [L153] SORT_1 init_35_arg_1 = var_25; [L154] state_34 = init_35_arg_1 [L155] SORT_1 init_37_arg_1 = var_25; [L156] state_36 = init_37_arg_1 [L157] SORT_1 init_39_arg_1 = var_25; [L158] state_38 = init_39_arg_1 [L159] SORT_1 init_41_arg_1 = var_25; [L160] state_40 = init_41_arg_1 [L161] SORT_1 init_43_arg_1 = var_25; [L162] state_42 = init_43_arg_1 [L163] SORT_1 init_45_arg_1 = var_25; [L164] state_44 = init_45_arg_1 [L165] SORT_1 init_47_arg_1 = var_25; [L166] state_46 = init_47_arg_1 [L167] SORT_1 init_49_arg_1 = var_25; [L168] state_48 = init_49_arg_1 [L169] SORT_1 init_51_arg_1 = var_25; [L170] state_50 = init_51_arg_1 [L171] SORT_1 init_53_arg_1 = var_25; [L172] state_52 = init_53_arg_1 [L173] SORT_1 init_55_arg_1 = var_25; [L174] state_54 = init_55_arg_1 [L175] SORT_1 init_57_arg_1 = var_25; [L176] state_56 = init_57_arg_1 [L177] SORT_1 init_59_arg_1 = var_25; [L178] state_58 = init_59_arg_1 [L179] SORT_1 init_61_arg_1 = var_25; [L180] state_60 = init_61_arg_1 [L181] SORT_1 init_63_arg_1 = var_25; [L182] state_62 = init_63_arg_1 [L183] SORT_1 init_65_arg_1 = var_25; [L184] state_64 = init_65_arg_1 [L185] SORT_1 init_67_arg_1 = var_25; [L186] state_66 = init_67_arg_1 [L187] SORT_1 init_69_arg_1 = var_25; [L188] state_68 = init_69_arg_1 [L189] SORT_1 init_71_arg_1 = var_25; [L190] state_70 = init_71_arg_1 [L191] SORT_1 init_73_arg_1 = var_25; [L192] state_72 = init_73_arg_1 [L193] SORT_1 init_75_arg_1 = var_25; [L194] state_74 = init_75_arg_1 [L195] SORT_1 init_77_arg_1 = var_25; [L196] state_76 = init_77_arg_1 [L197] SORT_1 init_79_arg_1 = var_25; [L198] state_78 = init_79_arg_1 [L199] SORT_1 init_81_arg_1 = var_25; [L200] state_80 = init_81_arg_1 [L201] SORT_1 init_83_arg_1 = var_25; [L202] state_82 = init_83_arg_1 [L203] SORT_1 init_85_arg_1 = var_25; [L204] state_84 = init_85_arg_1 [L205] SORT_1 init_87_arg_1 = var_25; [L206] state_86 = init_87_arg_1 VAL [init_10_arg_1=0, init_12_arg_1=0, init_14_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_39_arg_1=0, init_41_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_47_arg_1=0, init_49_arg_1=0, init_51_arg_1=0, init_53_arg_1=0, init_55_arg_1=0, init_57_arg_1=0, init_59_arg_1=0, init_61_arg_1=0, init_63_arg_1=0, init_65_arg_1=0, init_67_arg_1=0, init_69_arg_1=0, init_6_arg_1=0, init_71_arg_1=0, init_73_arg_1=0, init_75_arg_1=0, init_77_arg_1=0, init_79_arg_1=0, init_81_arg_1=0, init_83_arg_1=0, init_85_arg_1=0, init_87_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=2147483648, state_11=0, state_13=0, state_15=0, state_17=0, state_19=0, state_21=0, state_23=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_38=0, state_40=0, state_42=0, state_44=0, state_46=0, state_48=0, state_5=0, state_50=0, state_52=0, state_54=0, state_56=0, state_58=0, state_60=0, state_62=0, state_64=0, state_66=0, state_68=0, state_7=0, state_70=0, state_72=0, state_74=0, state_76=0, state_78=0, state_80=0, state_82=0, state_84=0, state_86=0, state_9=0, var_100=0, var_103=2, var_107=1, var_25=0, var_4=0, var_88=1, var_89=0, var_98=255] [L209] input_99 = __VERIFIER_nondet_uchar() [L210] input_104 = __VERIFIER_nondet_uchar() [L211] input_108 = __VERIFIER_nondet_uchar() [L212] input_111 = __VERIFIER_nondet_uchar() [L213] input_111 = input_111 & mask_SORT_1 [L214] input_123 = __VERIFIER_nondet_uchar() [L215] input_123 = input_123 & mask_SORT_1 [L216] input_135 = __VERIFIER_nondet_uchar() [L217] input_135 = input_135 & mask_SORT_1 [L218] input_147 = __VERIFIER_nondet_uchar() [L219] input_147 = input_147 & mask_SORT_1 [L220] input_148 = __VERIFIER_nondet_uchar() [L221] input_148 = input_148 & mask_SORT_1 [L222] input_152 = __VERIFIER_nondet_uchar() [L223] input_152 = input_152 & mask_SORT_1 [L224] input_153 = __VERIFIER_nondet_uchar() [L225] input_153 = input_153 & mask_SORT_1 [L226] input_157 = __VERIFIER_nondet_uchar() [L227] input_157 = input_157 & mask_SORT_1 [L228] input_158 = __VERIFIER_nondet_uchar() [L229] input_158 = input_158 & mask_SORT_1 [L230] input_162 = __VERIFIER_nondet_uchar() [L231] input_162 = input_162 & mask_SORT_1 [L232] input_163 = __VERIFIER_nondet_uchar() [L233] input_163 = input_163 & mask_SORT_1 [L234] input_164 = __VERIFIER_nondet_uchar() [L235] input_164 = input_164 & mask_SORT_1 [L236] input_165 = __VERIFIER_nondet_uchar() [L237] input_165 = input_165 & mask_SORT_1 [L238] input_166 = __VERIFIER_nondet_uchar() [L239] input_166 = input_166 & mask_SORT_1 [L240] input_167 = __VERIFIER_nondet_uchar() [L241] input_167 = input_167 & mask_SORT_1 [L242] input_191 = __VERIFIER_nondet_uchar() [L243] input_193 = __VERIFIER_nondet_uchar() [L244] input_203 = __VERIFIER_nondet_uchar() [L245] input_208 = __VERIFIER_nondet_uchar() [L246] input_210 = __VERIFIER_nondet_uchar() [L247] input_215 = __VERIFIER_nondet_uchar() [L248] input_219 = __VERIFIER_nondet_uchar() [L249] input_234 = __VERIFIER_nondet_uchar() [L250] input_236 = __VERIFIER_nondet_uchar() [L251] input_246 = __VERIFIER_nondet_uchar() [L252] input_251 = __VERIFIER_nondet_uchar() [L253] input_253 = __VERIFIER_nondet_uchar() [L254] input_258 = __VERIFIER_nondet_uchar() [L255] input_262 = __VERIFIER_nondet_uchar() [L256] input_277 = __VERIFIER_nondet_uchar() [L257] input_279 = __VERIFIER_nondet_uchar() [L258] input_289 = __VERIFIER_nondet_uchar() [L259] input_294 = __VERIFIER_nondet_uchar() [L260] input_296 = __VERIFIER_nondet_uchar() [L261] input_301 = __VERIFIER_nondet_uchar() [L262] input_305 = __VERIFIER_nondet_uchar() [L265] SORT_1 var_90_arg_0 = state_38; [L266] SORT_3 var_90_arg_1 = var_88; [L267] SORT_3 var_90_arg_2 = var_89; [L268] SORT_3 var_90 = var_90_arg_0 ? var_90_arg_1 : var_90_arg_2; [L269] SORT_1 var_91_arg_0 = state_58; [L270] SORT_3 var_91_arg_1 = var_88; [L271] SORT_3 var_91_arg_2 = var_89; [L272] SORT_3 var_91 = var_91_arg_0 ? var_91_arg_1 : var_91_arg_2; [L273] SORT_3 var_92_arg_0 = var_90; [L274] SORT_3 var_92_arg_1 = var_91; [L275] SORT_3 var_92 = var_92_arg_0 + var_92_arg_1; [L276] SORT_1 var_93_arg_0 = state_78; [L277] SORT_3 var_93_arg_1 = var_88; [L278] SORT_3 var_93_arg_2 = var_89; [L279] SORT_3 var_93 = var_93_arg_0 ? var_93_arg_1 : var_93_arg_2; [L280] SORT_3 var_94_arg_0 = var_92; [L281] SORT_3 var_94_arg_1 = var_93; [L282] SORT_3 var_94 = var_94_arg_0 + var_94_arg_1; [L283] var_94 = var_94 & mask_SORT_3 [L284] SORT_3 var_95_arg_0 = var_94; [L285] SORT_3 var_95_arg_1 = var_88; [L286] SORT_1 var_95 = var_95_arg_0 <= var_95_arg_1; [L287] SORT_1 var_96_arg_0 = ~state_86; [L288] var_96_arg_0 = var_96_arg_0 & mask_SORT_1 [L289] SORT_1 var_96_arg_1 = ~var_95; [L290] var_96_arg_1 = var_96_arg_1 & mask_SORT_1 [L291] SORT_1 var_96 = var_96_arg_0 & var_96_arg_1; [L292] var_96 = var_96 & mask_SORT_1 [L293] SORT_1 bad_97_arg_0 = var_96; [L294] CALL __VERIFIER_assert(!(bad_97_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 00:21:29,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e7b2877a212b286a1fb00f44568c712a06f3fa142b3aa5804b6a5fc40dc5b009 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:21:31,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:21:31,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:21:31,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:21:31,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:21:31,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:21:31,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:21:31,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:21:31,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:21:31,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:21:31,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:21:31,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:21:31,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:21:31,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:21:31,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:21:31,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:21:31,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:21:31,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:21:31,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:21:31,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:21:31,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:21:31,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:21:31,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:21:31,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:21:31,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:21:31,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:21:31,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:21:31,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:21:31,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:21:31,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:21:31,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:21:31,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:21:31,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:21:31,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:21:31,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:21:31,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:21:31,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:21:31,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:21:31,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:21:31,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:21:31,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:21:31,893 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-26 00:21:31,924 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:21:31,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:21:31,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:21:31,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:21:31,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:21:31,934 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:21:31,934 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:21:31,934 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:21:31,934 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:21:31,935 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:21:31,935 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:21:31,936 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:21:31,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:21:31,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:21:31,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:21:31,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:21:31,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:21:31,938 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:21:31,939 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:21:31,939 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:21:31,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:21:31,939 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:21:31,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:21:31,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:21:31,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:21:31,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:21:31,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:21:31,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:21:31,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:21:31,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:21:31,942 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:21:31,943 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:21:31,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:21:31,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:21:31,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:21:31,944 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_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7b2877a212b286a1fb00f44568c712a06f3fa142b3aa5804b6a5fc40dc5b009 [2022-11-26 00:21:32,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:21:32,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:21:32,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:21:32,368 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:21:32,368 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:21:32,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.2.prop1-func-interl.c [2022-11-26 00:21:35,461 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:21:35,871 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:21:35,872 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.2.prop1-func-interl.c [2022-11-26 00:21:35,895 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/data/bb83cc51f/6b8baff3695043058a47bd298669c59d/FLAG1366e13cd [2022-11-26 00:21:35,909 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/data/bb83cc51f/6b8baff3695043058a47bd298669c59d [2022-11-26 00:21:35,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:21:35,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:21:35,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:21:35,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:21:35,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:21:35,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:21:35" (1/1) ... [2022-11-26 00:21:35,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4edfb9f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:21:35, skipping insertion in model container [2022-11-26 00:21:35,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:21:35" (1/1) ... [2022-11-26 00:21:35,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:21:36,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:21:36,199 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_a47adf0f-217e-473f-84f0-5b38a346fd94/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.2.prop1-func-interl.c[1014,1027] [2022-11-26 00:21:36,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:21:36,702 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:21:36,725 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_a47adf0f-217e-473f-84f0-5b38a346fd94/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mcs.2.prop1-func-interl.c[1014,1027] [2022-11-26 00:21:36,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:21:36,901 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:21:36,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:21:36 WrapperNode [2022-11-26 00:21:36,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:21:36,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:21:36,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:21:36,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:21:36,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:21:36" (1/1) ... [2022-11-26 00:21:36,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:21:36" (1/1) ... [2022-11-26 00:21:37,056 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2182 [2022-11-26 00:21:37,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:21:37,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:21:37,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:21:37,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:21:37,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:21:36" (1/1) ... [2022-11-26 00:21:37,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:21:36" (1/1) ... [2022-11-26 00:21:37,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:21:36" (1/1) ... [2022-11-26 00:21:37,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:21:36" (1/1) ... [2022-11-26 00:21:37,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:21:36" (1/1) ... [2022-11-26 00:21:37,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:21:36" (1/1) ... [2022-11-26 00:21:37,185 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:21:36" (1/1) ... [2022-11-26 00:21:37,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:21:36" (1/1) ... [2022-11-26 00:21:37,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:21:37,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:21:37,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:21:37,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:21:37,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:21:36" (1/1) ... [2022-11-26 00:21:37,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:21:37,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:21:37,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:21:37,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:21:37,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:21:37,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:21:37,813 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:21:37,816 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:21:41,733 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:21:41,740 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:21:41,740 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:21:41,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:21:41 BoogieIcfgContainer [2022-11-26 00:21:41,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:21:41,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:21:41,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:21:41,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:21:41,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:21:35" (1/3) ... [2022-11-26 00:21:41,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f491d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:21:41, skipping insertion in model container [2022-11-26 00:21:41,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:21:36" (2/3) ... [2022-11-26 00:21:41,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f491d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:21:41, skipping insertion in model container [2022-11-26 00:21:41,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:21:41" (3/3) ... [2022-11-26 00:21:41,751 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mcs.2.prop1-func-interl.c [2022-11-26 00:21:41,771 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:21:41,772 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:21:41,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:21:41,828 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;@19104a81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:21:41,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:21:41,832 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:21:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:21:41,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:21:41,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:21:41,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:21:41,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:21:41,846 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-26 00:21:41,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:21:41,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611573673] [2022-11-26 00:21:41,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:21:41,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:21:41,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:21:41,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:21:41,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 00:21:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:21:42,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-26 00:21:42,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:21:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:21:42,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:21:42,713 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:21:42,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611573673] [2022-11-26 00:21:42,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611573673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:21:42,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:21:42,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:21:42,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900289868] [2022-11-26 00:21:42,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:21:42,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:21:42,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:21:42,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:21:42,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:21:42,775 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:21:43,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:21:43,103 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-26 00:21:43,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:21:43,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 00:21:43,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:21:43,114 INFO L225 Difference]: With dead ends: 20 [2022-11-26 00:21:43,114 INFO L226 Difference]: Without dead ends: 11 [2022-11-26 00:21:43,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:21:43,121 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:21:43,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:21:43,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-26 00:21:43,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-26 00:21:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:21:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 00:21:43,156 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-26 00:21:43,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:21:43,156 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 00:21:43,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:21:43,157 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 00:21:43,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:21:43,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:21:43,158 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:21:43,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:21:43,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:21:43,381 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:21:43,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:21:43,382 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-26 00:21:43,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:21:43,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849362257] [2022-11-26 00:21:43,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:21:43,388 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:21:43,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:21:43,390 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:21:43,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-26 00:21:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:21:44,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 202 conjunts are in the unsatisfiable core [2022-11-26 00:21:44,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:21:48,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:21:48,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:22:17,684 WARN L233 SmtUtils]: Spent 21.46s on a formula simplification that was a NOOP. DAG size: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:22:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:22:19,054 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:22:19,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849362257] [2022-11-26 00:22:19,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849362257] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:22:19,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1773554698] [2022-11-26 00:22:19,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:22:19,060 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:22:19,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:22:19,085 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:22:19,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-26 00:22:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:22:20,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 204 conjunts are in the unsatisfiable core [2022-11-26 00:22:20,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:22:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:22:24,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:22:52,280 WARN L233 SmtUtils]: Spent 24.49s 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) [2022-11-26 00:23:58,238 WARN L233 SmtUtils]: Spent 48.71s on a formula simplification that was a NOOP. DAG size: 445 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:23:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:23:59,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1773554698] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:23:59,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742221065] [2022-11-26 00:24:00,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:24:00,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:24:00,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:24:00,007 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:24:00,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47adf0f-217e-473f-84f0-5b38a346fd94/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:24:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:24:00,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 207 conjunts are in the unsatisfiable core [2022-11-26 00:24:01,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:24:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:24:11,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:24:56,527 WARN L233 SmtUtils]: Spent 36.46s on a formula simplification. DAG size of input: 86 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:26:50,483 WARN L233 SmtUtils]: Spent 1.39m on a formula simplification that was a NOOP. DAG size: 465 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)