./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e2bae4e40ed29e38030a23f4409075f953591d0aab7a5344461847b398c5b718 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:07:17,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:07:17,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:07:17,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:07:17,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:07:17,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:07:17,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:07:17,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:07:17,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:07:17,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:07:17,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:07:17,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:07:17,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:07:17,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:07:17,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:07:17,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:07:17,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:07:17,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:07:17,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:07:17,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:07:17,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:07:17,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:07:17,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:07:17,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:07:17,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:07:17,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:07:17,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:07:17,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:07:17,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:07:17,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:07:17,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:07:17,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:07:17,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:07:17,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:07:17,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:07:17,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:07:17,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:07:17,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:07:17,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:07:17,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:07:17,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:07:17,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 09:07:17,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:07:17,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:07:17,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:07:17,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:07:17,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:07:17,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:07:17,159 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:07:17,163 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:07:17,163 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:07:17,163 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:07:17,164 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:07:17,164 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:07:17,164 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:07:17,164 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:07:17,164 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:07:17,164 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:07:17,165 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:07:17,165 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:07:17,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:07:17,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:07:17,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:07:17,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:07:17,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:07:17,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:07:17,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:07:17,167 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:07:17,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:07:17,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:07:17,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:07:17,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:07:17,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:07:17,168 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:07:17,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:07:17,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:07:17,168 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:07:17,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:07:17,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:07:17,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:07:17,169 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_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2bae4e40ed29e38030a23f4409075f953591d0aab7a5344461847b398c5b718 [2022-12-14 09:07:17,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:07:17,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:07:17,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:07:17,375 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:07:17,376 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:07:17,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c [2022-12-14 09:07:20,062 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:07:20,203 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:07:20,204 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c [2022-12-14 09:07:20,211 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/data/5958fd921/90add2c8f7bb4074af8d3df3fea18539/FLAGff3a79a46 [2022-12-14 09:07:20,220 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/data/5958fd921/90add2c8f7bb4074af8d3df3fea18539 [2022-12-14 09:07:20,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:07:20,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:07:20,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:07:20,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:07:20,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:07:20,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:07:20" (1/1) ... [2022-12-14 09:07:20,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c36e963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:20, skipping insertion in model container [2022-12-14 09:07:20,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:07:20" (1/1) ... [2022-12-14 09:07:20,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:07:20,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:07:20,333 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_35ea78bb-a6ae-4e43-83bd-02815f271d50/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c[1107,1120] [2022-12-14 09:07:20,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:07:20,356 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:07:20,366 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_35ea78bb-a6ae-4e43-83bd-02815f271d50/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c[1107,1120] [2022-12-14 09:07:20,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:07:20,390 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:07:20,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:20 WrapperNode [2022-12-14 09:07:20,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:07:20,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:07:20,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:07:20,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:07:20,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:20" (1/1) ... [2022-12-14 09:07:20,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:20" (1/1) ... [2022-12-14 09:07:20,423 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2022-12-14 09:07:20,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:07:20,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:07:20,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:07:20,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:07:20,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:20" (1/1) ... [2022-12-14 09:07:20,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:20" (1/1) ... [2022-12-14 09:07:20,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:20" (1/1) ... [2022-12-14 09:07:20,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:20" (1/1) ... [2022-12-14 09:07:20,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:20" (1/1) ... [2022-12-14 09:07:20,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:20" (1/1) ... [2022-12-14 09:07:20,443 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:20" (1/1) ... [2022-12-14 09:07:20,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:20" (1/1) ... [2022-12-14 09:07:20,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:07:20,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:07:20,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:07:20,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:07:20,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:20" (1/1) ... [2022-12-14 09:07:20,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:07:20,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:07:20,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:07:20,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:07:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:07:20,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:07:20,564 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:07:20,566 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:07:20,670 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:07:20,682 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:07:20,683 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 09:07:20,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:07:20 BoogieIcfgContainer [2022-12-14 09:07:20,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:07:20,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:07:20,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:07:20,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:07:20,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:07:20" (1/3) ... [2022-12-14 09:07:20,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d67af47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:07:20, skipping insertion in model container [2022-12-14 09:07:20,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:20" (2/3) ... [2022-12-14 09:07:20,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d67af47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:07:20, skipping insertion in model container [2022-12-14 09:07:20,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:07:20" (3/3) ... [2022-12-14 09:07:20,691 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.counter.c [2022-12-14 09:07:20,706 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:07:20,706 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:07:20,741 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:07:20,746 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;@74e0e45e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:07:20,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 09:07:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:07:20,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 09:07:20,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:07:20,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 09:07:20,755 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:07:20,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:07:20,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 09:07:20,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:07:20,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425266571] [2022-12-14 09:07:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:07:20,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:07:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:07:20,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 09:07:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:07:20,904 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 09:07:20,905 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 09:07:20,906 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 09:07:20,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:07:20,911 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 09:07:20,914 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 09:07:20,922 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 09:07:20,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 09:07:20 BoogieIcfgContainer [2022-12-14 09:07:20,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 09:07:20,927 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 09:07:20,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 09:07:20,928 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 09:07:20,928 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:07:20" (3/4) ... [2022-12-14 09:07:20,931 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 09:07:20,931 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 09:07:20,932 INFO L158 Benchmark]: Toolchain (without parser) took 708.27ms. Allocated memory is still 142.6MB. Free memory was 103.2MB in the beginning and 60.2MB in the end (delta: 43.1MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2022-12-14 09:07:20,932 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 142.6MB. Free memory is still 109.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:07:20,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.67ms. Allocated memory is still 142.6MB. Free memory was 102.7MB in the beginning and 92.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 09:07:20,933 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.16ms. Allocated memory is still 142.6MB. Free memory was 92.3MB in the beginning and 90.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:07:20,933 INFO L158 Benchmark]: Boogie Preprocessor took 21.92ms. Allocated memory is still 142.6MB. Free memory was 90.6MB in the beginning and 89.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:07:20,933 INFO L158 Benchmark]: RCFGBuilder took 237.68ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 77.6MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 09:07:20,934 INFO L158 Benchmark]: TraceAbstraction took 240.91ms. Allocated memory is still 142.6MB. Free memory was 76.9MB in the beginning and 60.8MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 09:07:20,934 INFO L158 Benchmark]: Witness Printer took 3.35ms. Allocated memory is still 142.6MB. Free memory was 60.8MB in the beginning and 60.2MB in the end (delta: 626.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:07:20,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 142.6MB. Free memory is still 109.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 166.67ms. Allocated memory is still 142.6MB. Free memory was 102.7MB in the beginning and 92.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.16ms. Allocated memory is still 142.6MB. Free memory was 92.3MB in the beginning and 90.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.92ms. Allocated memory is still 142.6MB. Free memory was 90.6MB in the beginning and 89.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 237.68ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 77.6MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 240.91ms. Allocated memory is still 142.6MB. Free memory was 76.9MB in the beginning and 60.8MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 3.35ms. Allocated memory is still 142.6MB. Free memory was 60.8MB in the beginning and 60.2MB in the end (delta: 626.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 54, overapproximation of bitwiseAnd at line 47. 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_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L31] const SORT_4 var_5 = 1; [L32] const SORT_4 var_8 = 0; [L33] const SORT_1 var_12 = 1; [L34] const SORT_4 var_18 = 15; [L36] SORT_1 input_2; [L37] SORT_1 input_3; [L39] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L41] SORT_4 init_7_arg_1 = var_5; [L42] state_6 = init_7_arg_1 VAL [init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, state_6=1, var_12=1, var_18=15, var_5=1, var_8=0] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_3 = __VERIFIER_nondet_uchar() [L47] input_3 = input_3 & mask_SORT_1 [L50] SORT_4 var_9_arg_0 = state_6; [L51] SORT_4 var_9_arg_1 = var_8; [L52] SORT_1 var_9 = var_9_arg_0 != var_9_arg_1; [L53] SORT_1 var_13_arg_0 = var_9; [L54] SORT_1 var_13 = ~var_13_arg_0; [L55] SORT_1 var_14_arg_0 = var_12; [L56] SORT_1 var_14_arg_1 = var_13; [L57] SORT_1 var_14 = var_14_arg_0 & var_14_arg_1; [L58] var_14 = var_14 & mask_SORT_1 [L59] SORT_1 bad_15_arg_0 = var_14; [L60] CALL __VERIFIER_assert(!(bad_15_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: 0.2s, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 09:07:20,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e2bae4e40ed29e38030a23f4409075f953591d0aab7a5344461847b398c5b718 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:07:22,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:07:22,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:07:22,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:07:22,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:07:22,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:07:22,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:07:22,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:07:22,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:07:22,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:07:22,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:07:22,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:07:22,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:07:22,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:07:22,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:07:22,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:07:22,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:07:22,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:07:22,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:07:22,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:07:22,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:07:22,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:07:22,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:07:22,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:07:22,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:07:22,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:07:22,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:07:22,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:07:22,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:07:22,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:07:22,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:07:22,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:07:22,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:07:22,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:07:22,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:07:22,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:07:22,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:07:22,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:07:22,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:07:22,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:07:22,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:07:22,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 09:07:22,865 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:07:22,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:07:22,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:07:22,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:07:22,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:07:22,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:07:22,866 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:07:22,867 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:07:22,867 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:07:22,867 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:07:22,867 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:07:22,867 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:07:22,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:07:22,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:07:22,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:07:22,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:07:22,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:07:22,869 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 09:07:22,869 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 09:07:22,869 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 09:07:22,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:07:22,869 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:07:22,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:07:22,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:07:22,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 09:07:22,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:07:22,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:07:22,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:07:22,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:07:22,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:07:22,871 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 09:07:22,871 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 09:07:22,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:07:22,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:07:22,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 09:07:22,872 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_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2bae4e40ed29e38030a23f4409075f953591d0aab7a5344461847b398c5b718 [2022-12-14 09:07:23,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:07:23,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:07:23,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:07:23,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:07:23,111 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:07:23,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c [2022-12-14 09:07:25,689 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:07:25,862 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:07:25,863 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c [2022-12-14 09:07:25,868 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/data/52fb0380f/408437027ca94e3cb9aedcd8d2d64ee0/FLAGef314369e [2022-12-14 09:07:25,879 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/data/52fb0380f/408437027ca94e3cb9aedcd8d2d64ee0 [2022-12-14 09:07:25,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:07:25,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:07:25,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:07:25,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:07:25,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:07:25,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:07:25" (1/1) ... [2022-12-14 09:07:25,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c2d1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:25, skipping insertion in model container [2022-12-14 09:07:25,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:07:25" (1/1) ... [2022-12-14 09:07:25,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:07:25,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:07:25,999 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_35ea78bb-a6ae-4e43-83bd-02815f271d50/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c[1107,1120] [2022-12-14 09:07:26,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:07:26,027 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:07:26,035 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_35ea78bb-a6ae-4e43-83bd-02815f271d50/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.counter.c[1107,1120] [2022-12-14 09:07:26,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:07:26,053 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:07:26,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:26 WrapperNode [2022-12-14 09:07:26,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:07:26,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:07:26,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:07:26,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:07:26,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:26" (1/1) ... [2022-12-14 09:07:26,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:26" (1/1) ... [2022-12-14 09:07:26,077 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2022-12-14 09:07:26,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:07:26,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:07:26,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:07:26,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:07:26,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:26" (1/1) ... [2022-12-14 09:07:26,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:26" (1/1) ... [2022-12-14 09:07:26,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:26" (1/1) ... [2022-12-14 09:07:26,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:26" (1/1) ... [2022-12-14 09:07:26,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:26" (1/1) ... [2022-12-14 09:07:26,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:26" (1/1) ... [2022-12-14 09:07:26,101 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:26" (1/1) ... [2022-12-14 09:07:26,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:26" (1/1) ... [2022-12-14 09:07:26,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:07:26,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:07:26,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:07:26,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:07:26,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:26" (1/1) ... [2022-12-14 09:07:26,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:07:26,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:07:26,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:07:26,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:07:26,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:07:26,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:07:26,232 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:07:26,234 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:07:26,343 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:07:26,350 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:07:26,350 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 09:07:26,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:07:26 BoogieIcfgContainer [2022-12-14 09:07:26,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:07:26,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:07:26,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:07:26,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:07:26,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:07:25" (1/3) ... [2022-12-14 09:07:26,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd63d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:07:26, skipping insertion in model container [2022-12-14 09:07:26,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:07:26" (2/3) ... [2022-12-14 09:07:26,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd63d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:07:26, skipping insertion in model container [2022-12-14 09:07:26,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:07:26" (3/3) ... [2022-12-14 09:07:26,360 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.counter.c [2022-12-14 09:07:26,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:07:26,376 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:07:26,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:07:26,433 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;@aaaf8f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:07:26,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 09:07:26,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:07:26,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 09:07:26,444 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:07:26,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 09:07:26,445 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:07:26,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:07:26,450 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 09:07:26,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 09:07:26,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094093927] [2022-12-14 09:07:26,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:07:26,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:07:26,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 09:07:26,464 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 09:07:26,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 09:07:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:07:26,519 WARN L261 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 09:07:26,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:07:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:07:26,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:07:26,709 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 09:07:26,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094093927] [2022-12-14 09:07:26,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094093927] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:07:26,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:07:26,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 09:07:26,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325270223] [2022-12-14 09:07:26,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:07:26,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:07:26,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 09:07:26,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:07:26,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:07:26,751 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:07:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:07:26,789 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 09:07:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 09:07:26,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 09:07:26,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:07:26,797 INFO L225 Difference]: With dead ends: 20 [2022-12-14 09:07:26,797 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 09:07:26,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:07:26,801 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:07:26,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:07:26,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 09:07:26,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 09:07:26,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:07:26,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 09:07:26,824 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 09:07:26,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:07:26,824 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 09:07:26,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:07:26,824 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 09:07:26,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 09:07:26,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:07:26,825 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 09:07:26,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:07:27,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:07:27,026 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:07:27,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:07:27,027 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 09:07:27,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 09:07:27,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43768842] [2022-12-14 09:07:27,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:07:27,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:07:27,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 09:07:27,029 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 09:07:27,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 09:07:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:07:27,073 WARN L261 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 09:07:27,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:07:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:07:27,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:07:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:07:27,819 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 09:07:27,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43768842] [2022-12-14 09:07:27,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43768842] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:07:27,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1118564558] [2022-12-14 09:07:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:07:27,820 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 09:07:27,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 09:07:27,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 09:07:27,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 09:07:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:07:27,913 WARN L261 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-14 09:07:27,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:07:28,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:07:28,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:07:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:07:28,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1118564558] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:07:28,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486028647] [2022-12-14 09:07:28,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:07:28,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:07:28,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:07:28,287 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:07:28,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 09:07:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:07:28,326 WARN L261 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-14 09:07:28,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:07:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:07:28,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:07:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:07:28,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486028647] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:07:28,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 09:07:28,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 12 [2022-12-14 09:07:28,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523710229] [2022-12-14 09:07:28,828 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 09:07:28,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 09:07:28,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 09:07:28,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 09:07:28,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-12-14 09:07:28,830 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:07:29,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:07:29,061 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-12-14 09:07:29,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 09:07:29,061 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 09:07:29,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:07:29,062 INFO L225 Difference]: With dead ends: 19 [2022-12-14 09:07:29,062 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 09:07:29,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-12-14 09:07:29,063 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:07:29,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:07:29,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 09:07:29,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 09:07:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:07:29,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 09:07:29,066 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-12-14 09:07:29,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:07:29,067 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 09:07:29,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:07:29,067 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 09:07:29,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 09:07:29,067 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:07:29,067 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-14 09:07:29,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 09:07:29,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 09:07:29,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 09:07:29,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:07:29,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:07:29,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:07:29,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-12-14 09:07:29,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 09:07:29,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309928444] [2022-12-14 09:07:29,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 09:07:29,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:07:29,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 09:07:29,676 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 09:07:29,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 09:07:29,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 09:07:29,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:07:29,729 WARN L261 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-14 09:07:29,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:07:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:07:30,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:07:45,140 WARN L233 SmtUtils]: Spent 13.15s on a formula simplification. DAG size of input: 321 DAG size of output: 215 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:07:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:07:45,377 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 09:07:45,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309928444] [2022-12-14 09:07:45,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309928444] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:07:45,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2032046709] [2022-12-14 09:07:45,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 09:07:45,378 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 09:07:45,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 09:07:45,379 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 09:07:45,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 09:07:45,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 09:07:45,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:07:45,453 WARN L261 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-14 09:07:45,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:07:45,750 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:07:45,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:07:54,018 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 296 DAG size of output: 208 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:07:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:07:54,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2032046709] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:07:54,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900669396] [2022-12-14 09:07:54,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 09:07:54,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:07:54,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:07:54,162 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:07:54,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 09:07:54,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 09:07:54,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:07:54,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-14 09:07:54,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:07:54,809 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:07:54,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:08:06,615 WARN L233 SmtUtils]: Spent 10.93s on a formula simplification. DAG size of input: 169 DAG size of output: 122 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:08:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 09:08:10,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900669396] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:08:10,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 09:08:10,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 10, 9] total 26 [2022-12-14 09:08:10,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187775627] [2022-12-14 09:08:10,588 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 09:08:10,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 09:08:10,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 09:08:10,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 09:08:10,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2022-12-14 09:08:10,589 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:08:11,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:08:11,701 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-12-14 09:08:11,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 09:08:11,702 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 09:08:11,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:08:11,703 INFO L225 Difference]: With dead ends: 28 [2022-12-14 09:08:11,703 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 09:08:11,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 38.0s TimeCoverageRelationStatistics Valid=352, Invalid=770, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 09:08:11,705 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 68 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:08:11,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 14 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 09:08:11,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 09:08:11,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 09:08:11,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:08:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 09:08:11,706 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-12-14 09:08:11,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:08:11,706 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 09:08:11,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:08:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 09:08:11,707 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 09:08:11,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 09:08:11,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-14 09:08:11,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 09:08:12,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-12-14 09:08:12,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:08:12,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 09:08:12,450 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 09:08:12,450 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 09:08:12,451 INFO L895 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 82) the Hoare annotation is: false [2022-12-14 09:08:12,451 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-14 09:08:12,451 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-14 09:08:12,451 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-12-14 09:08:12,451 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-12-14 09:08:12,451 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-12-14 09:08:12,451 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-12-14 09:08:12,452 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 43 80) the Hoare annotation is: (let ((.cse0 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse1 (= |ULTIMATE.start_main_~var_8~0#1| (_ bv0 8))) (.cse2 (= (_ bv15 8) |ULTIMATE.start_main_~mask_SORT_4~0#1|)) (.cse3 (= (_ bv15 8) |ULTIMATE.start_main_~var_18~0#1|)) (.cse4 (= (_ bv1 8) |ULTIMATE.start_main_~var_12~0#1|))) (or (and .cse0 (= (_ bv1 8) |ULTIMATE.start_main_~var_5~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse1 .cse2 .cse3 .cse4 (not (= ((_ zero_extend 24) |ULTIMATE.start_main_~state_6~0#1|) ((_ zero_extend 24) |ULTIMATE.start_main_~var_8~0#1|))) (exists ((|ULTIMATE.start_main_~var_21_arg_1~0#1| (_ BitVec 8))) (= ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_4~0#1|) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_21_arg_1~0#1|))))) |ULTIMATE.start_main_~state_6~0#1|))) (and .cse0 .cse1 (= (_ bv1 8) |ULTIMATE.start_main_~state_6~0#1|) .cse2 (= |ULTIMATE.start_main_~state_6~0#1| |ULTIMATE.start_main_~var_5~0#1|) .cse3 .cse4))) [2022-12-14 09:08:12,452 INFO L899 garLoopResultBuilder]: For program point L43-3(lines 43 80) no Hoare annotation was computed. [2022-12-14 09:08:12,454 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2022-12-14 09:08:12,456 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 09:08:12,461 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_21_arg_1~0#1,QUANTIFIED] [2022-12-14 09:08:12,465 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_21_arg_1~0#1,QUANTIFIED] [2022-12-14 09:08:12,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 09:08:12 BoogieIcfgContainer [2022-12-14 09:08:12,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 09:08:12,466 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 09:08:12,466 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 09:08:12,466 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 09:08:12,467 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:07:26" (3/4) ... [2022-12-14 09:08:12,469 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 09:08:12,475 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-12-14 09:08:12,475 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 09:08:12,475 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 09:08:12,491 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((1bv8 == mask_SORT_1 && 1bv8 == var_5) && cond == 1bv32) && var_8 == 0bv8) && 15bv8 == mask_SORT_4) && 15bv8 == var_18) && 1bv8 == var_12) && !(~zero_extendFrom8To32(state_6) == ~zero_extendFrom8To32(var_8))) && (\exists ULTIMATE.start_main_~var_21_arg_1~0#1 : bv8 :: ~bvand32(~zero_extendFrom8To32(mask_SORT_4), ~zero_extendFrom8To32(~zero_extendFrom8To32(ULTIMATE.start_main_~var_21_arg_1~0#1)[7:0]))[7:0] == state_6)) || ((((((1bv8 == mask_SORT_1 && var_8 == 0bv8) && 1bv8 == state_6) && 15bv8 == mask_SORT_4) && state_6 == var_5) && 15bv8 == var_18) && 1bv8 == var_12) [2022-12-14 09:08:12,501 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 09:08:12,501 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 09:08:12,505 INFO L158 Benchmark]: Toolchain (without parser) took 46619.72ms. Allocated memory was 60.8MB in the beginning and 130.0MB in the end (delta: 69.2MB). Free memory was 38.8MB in the beginning and 31.4MB in the end (delta: 7.4MB). Peak memory consumption was 78.3MB. Max. memory is 16.1GB. [2022-12-14 09:08:12,505 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 48.2MB. Free memory was 26.9MB in the beginning and 26.8MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:08:12,505 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.72ms. Allocated memory is still 60.8MB. Free memory was 38.5MB in the beginning and 27.8MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 09:08:12,505 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.77ms. Allocated memory is still 60.8MB. Free memory was 27.8MB in the beginning and 26.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:08:12,506 INFO L158 Benchmark]: Boogie Preprocessor took 26.29ms. Allocated memory is still 60.8MB. Free memory was 26.1MB in the beginning and 40.9MB in the end (delta: -14.8MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2022-12-14 09:08:12,506 INFO L158 Benchmark]: RCFGBuilder took 243.18ms. Allocated memory is still 60.8MB. Free memory was 40.7MB in the beginning and 30.4MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 09:08:12,506 INFO L158 Benchmark]: TraceAbstraction took 46111.42ms. Allocated memory was 60.8MB in the beginning and 130.0MB in the end (delta: 69.2MB). Free memory was 29.9MB in the beginning and 33.5MB in the end (delta: -3.7MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2022-12-14 09:08:12,506 INFO L158 Benchmark]: Witness Printer took 34.92ms. Allocated memory is still 130.0MB. Free memory was 33.5MB in the beginning and 31.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:08:12,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 48.2MB. Free memory was 26.9MB in the beginning and 26.8MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 170.72ms. Allocated memory is still 60.8MB. Free memory was 38.5MB in the beginning and 27.8MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.77ms. Allocated memory is still 60.8MB. Free memory was 27.8MB in the beginning and 26.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.29ms. Allocated memory is still 60.8MB. Free memory was 26.1MB in the beginning and 40.9MB in the end (delta: -14.8MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * RCFGBuilder took 243.18ms. Allocated memory is still 60.8MB. Free memory was 40.7MB in the beginning and 30.4MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 46111.42ms. Allocated memory was 60.8MB in the beginning and 130.0MB in the end (delta: 69.2MB). Free memory was 29.9MB in the beginning and 33.5MB in the end (delta: -3.7MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * Witness Printer took 34.92ms. Allocated memory is still 130.0MB. Free memory was 33.5MB in the beginning and 31.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_21_arg_1~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_21_arg_1~0#1,QUANTIFIED] * 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 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 46.0s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 88 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 88 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 11 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 82 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 38.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 63 HoareAnnotationTreeSize, 2 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 574 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 42.5s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 124 ConstructedInterpolants, 46 QuantifiedInterpolants, 12678 SizeOfPredicates, 291 NumberOfNonLiveVariables, 556 ConjunctsInSsa, 288 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 5/102 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 43]: Loop Invariant [2022-12-14 09:08:12,512 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_21_arg_1~0#1,QUANTIFIED] [2022-12-14 09:08:12,513 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_21_arg_1~0#1,QUANTIFIED] Derived loop invariant: ((((((((1bv8 == mask_SORT_1 && 1bv8 == var_5) && cond == 1bv32) && var_8 == 0bv8) && 15bv8 == mask_SORT_4) && 15bv8 == var_18) && 1bv8 == var_12) && !(~zero_extendFrom8To32(state_6) == ~zero_extendFrom8To32(var_8))) && (\exists ULTIMATE.start_main_~var_21_arg_1~0#1 : bv8 :: ~bvand32(~zero_extendFrom8To32(mask_SORT_4), ~zero_extendFrom8To32(~zero_extendFrom8To32(ULTIMATE.start_main_~var_21_arg_1~0#1)[7:0]))[7:0] == state_6)) || ((((((1bv8 == mask_SORT_1 && var_8 == 0bv8) && 1bv8 == state_6) && 15bv8 == mask_SORT_4) && state_6 == var_5) && 15bv8 == var_18) && 1bv8 == var_12) RESULT: Ultimate proved your program to be correct! [2022-12-14 09:08:12,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ea78bb-a6ae-4e43-83bd-02815f271d50/bin/utaipan-gh47qXpMRh/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 Writing output log to file Ultimate.log Result: TRUE