./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3a363747858f755dcf7765e023ce6efb7203891cba18b65d67294674b3e7662e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:18:46,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:18:46,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:18:46,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:18:46,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:18:46,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:18:46,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:18:46,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:18:46,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:18:46,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:18:46,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:18:46,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:18:46,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:18:46,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:18:46,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:18:46,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:18:46,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:18:46,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:18:46,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:18:46,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:18:46,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:18:46,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:18:46,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:18:46,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:18:46,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:18:46,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:18:46,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:18:46,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:18:46,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:18:46,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:18:46,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:18:46,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:18:46,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:18:46,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:18:46,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:18:46,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:18:46,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:18:46,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:18:46,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:18:46,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:18:46,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:18:46,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:18:46,139 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:18:46,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:18:46,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:18:46,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:18:46,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:18:46,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:18:46,141 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:18:46,142 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:18:46,142 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:18:46,142 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:18:46,142 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:18:46,143 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:18:46,143 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:18:46,143 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:18:46,143 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:18:46,144 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:18:46,144 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:18:46,144 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:18:46,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:18:46,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:18:46,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:18:46,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:18:46,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:18:46,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:18:46,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:18:46,147 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:18:46,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:18:46,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:18:46,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:18:46,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:18:46,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:18:46,149 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:18:46,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:18:46,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:18:46,150 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:18:46,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:18:46,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:18:46,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:18:46,151 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_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a363747858f755dcf7765e023ce6efb7203891cba18b65d67294674b3e7662e [2022-11-25 23:18:46,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:18:46,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:18:46,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:18:46,457 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:18:46,459 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:18:46,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-25 23:18:49,486 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:18:49,819 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:18:49,820 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-25 23:18:49,854 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/data/7549a992a/59cde77cd6194763ab994948cc2a17f6/FLAGef91244f1 [2022-11-25 23:18:50,062 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/data/7549a992a/59cde77cd6194763ab994948cc2a17f6 [2022-11-25 23:18:50,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:18:50,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:18:50,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:18:50,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:18:50,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:18:50,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:18:50" (1/1) ... [2022-11-25 23:18:50,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58fad0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:50, skipping insertion in model container [2022-11-25 23:18:50,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:18:50" (1/1) ... [2022-11-25 23:18:50,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:18:50,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:18:50,334 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_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c[1014,1027] [2022-11-25 23:18:50,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:18:50,662 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:18:50,674 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_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c[1014,1027] [2022-11-25 23:18:50,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:18:50,902 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:18:50,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:50 WrapperNode [2022-11-25 23:18:50,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:18:50,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:18:50,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:18:50,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:18:50,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:50" (1/1) ... [2022-11-25 23:18:50,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:50" (1/1) ... [2022-11-25 23:18:51,119 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1482 [2022-11-25 23:18:51,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:18:51,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:18:51,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:18:51,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:18:51,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:50" (1/1) ... [2022-11-25 23:18:51,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:50" (1/1) ... [2022-11-25 23:18:51,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:50" (1/1) ... [2022-11-25 23:18:51,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:50" (1/1) ... [2022-11-25 23:18:51,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:50" (1/1) ... [2022-11-25 23:18:51,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:50" (1/1) ... [2022-11-25 23:18:51,210 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:50" (1/1) ... [2022-11-25 23:18:51,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:50" (1/1) ... [2022-11-25 23:18:51,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:18:51,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:18:51,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:18:51,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:18:51,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:50" (1/1) ... [2022-11-25 23:18:51,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:18:51,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:18:51,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:18:51,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:18:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:18:51,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:18:51,779 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:18:51,781 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:21:08,261 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:21:08,303 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:21:08,306 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:21:08,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:21:08 BoogieIcfgContainer [2022-11-25 23:21:08,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:21:08,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:21:08,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:21:08,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:21:08,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:18:50" (1/3) ... [2022-11-25 23:21:08,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d4fec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:21:08, skipping insertion in model container [2022-11-25 23:21:08,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:50" (2/3) ... [2022-11-25 23:21:08,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d4fec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:21:08, skipping insertion in model container [2022-11-25 23:21:08,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:21:08" (3/3) ... [2022-11-25 23:21:08,322 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-25 23:21:08,350 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:21:08,350 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:21:08,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:21:08,424 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;@487f186f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:21:08,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:21:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:08,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:21:08,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:08,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:21:08,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:21:08,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:08,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-25 23:21:08,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:21:08,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52867871] [2022-11-25 23:21:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:08,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:21:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:21:08,771 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:21:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:21:08,963 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:21:08,965 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:21:08,966 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 23:21:08,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:21:08,973 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 23:21:08,986 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:21:09,026 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-25 23:21:09,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:21:09 BoogieIcfgContainer [2022-11-25 23:21:09,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:21:09,051 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:21:09,052 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:21:09,052 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:21:09,053 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:21:08" (3/4) ... [2022-11-25 23:21:09,057 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:21:09,058 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:21:09,059 INFO L158 Benchmark]: Toolchain (without parser) took 138992.62ms. Allocated memory was 136.3MB in the beginning and 992.0MB in the end (delta: 855.6MB). Free memory was 103.4MB in the beginning and 575.7MB in the end (delta: -472.3MB). Peak memory consumption was 384.4MB. Max. memory is 16.1GB. [2022-11-25 23:21:09,060 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 136.3MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:21:09,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 835.63ms. Allocated memory was 136.3MB in the beginning and 167.8MB in the end (delta: 31.5MB). Free memory was 103.0MB in the beginning and 120.7MB in the end (delta: -17.7MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2022-11-25 23:21:09,062 INFO L158 Benchmark]: Boogie Procedure Inliner took 215.40ms. Allocated memory is still 167.8MB. Free memory was 120.7MB in the beginning and 104.0MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 23:21:09,068 INFO L158 Benchmark]: Boogie Preprocessor took 134.61ms. Allocated memory is still 167.8MB. Free memory was 104.0MB in the beginning and 95.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 23:21:09,068 INFO L158 Benchmark]: RCFGBuilder took 137054.28ms. Allocated memory was 167.8MB in the beginning and 992.0MB in the end (delta: 824.2MB). Free memory was 95.6MB in the beginning and 622.9MB in the end (delta: -527.3MB). Peak memory consumption was 578.7MB. Max. memory is 16.1GB. [2022-11-25 23:21:09,070 INFO L158 Benchmark]: TraceAbstraction took 736.13ms. Allocated memory is still 992.0MB. Free memory was 621.9MB in the beginning and 576.8MB in the end (delta: 45.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-11-25 23:21:09,071 INFO L158 Benchmark]: Witness Printer took 6.64ms. Allocated memory is still 992.0MB. Free memory was 576.8MB in the beginning and 575.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:21:09,079 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 136.3MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 835.63ms. Allocated memory was 136.3MB in the beginning and 167.8MB in the end (delta: 31.5MB). Free memory was 103.0MB in the beginning and 120.7MB in the end (delta: -17.7MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 215.40ms. Allocated memory is still 167.8MB. Free memory was 120.7MB in the beginning and 104.0MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 134.61ms. Allocated memory is still 167.8MB. Free memory was 104.0MB in the beginning and 95.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 137054.28ms. Allocated memory was 167.8MB in the beginning and 992.0MB in the end (delta: 824.2MB). Free memory was 95.6MB in the beginning and 622.9MB in the end (delta: -527.3MB). Peak memory consumption was 578.7MB. Max. memory is 16.1GB. * TraceAbstraction took 736.13ms. Allocated memory is still 992.0MB. Free memory was 621.9MB in the beginning and 576.8MB in the end (delta: 45.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Witness Printer took 6.64ms. Allocated memory is still 992.0MB. Free memory was 576.8MB in the beginning and 575.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 211, overapproximation of bitwiseOr at line 206, overapproximation of bitwiseAnd at line 173. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_30 = 0; [L39] const SORT_3 var_75 = 0; [L40] const SORT_4 var_77 = 20; [L41] const SORT_2 var_81 = 3; [L42] const SORT_4 var_85 = 1; [L43] const SORT_2 var_91 = 4; [L44] const SORT_4 var_93 = 2; [L45] const SORT_2 var_117 = 12; [L46] const SORT_2 var_140 = 2; [L47] const SORT_2 var_181 = 15; [L48] const SORT_2 var_198 = 10; [L50] SORT_1 input_82; [L51] SORT_1 input_92; [L52] SORT_1 input_98; [L53] SORT_1 input_122; [L54] SORT_1 input_125; [L55] SORT_1 input_126; [L56] SORT_1 input_127; [L57] SORT_1 input_128; [L58] SORT_1 input_147; [L59] SORT_1 input_148; [L60] SORT_1 input_170; [L61] SORT_1 input_174; [L62] SORT_1 input_217; [L63] SORT_1 input_220; [L64] SORT_1 input_241; [L65] SORT_1 input_262; [L67] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L68] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L75] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L79] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] SORT_2 init_7_arg_1 = var_5; [L103] state_6 = init_7_arg_1 [L104] SORT_2 init_9_arg_1 = var_5; [L105] state_8 = init_9_arg_1 [L106] SORT_2 init_11_arg_1 = var_5; [L107] state_10 = init_11_arg_1 [L108] SORT_2 init_13_arg_1 = var_5; [L109] state_12 = init_13_arg_1 [L110] SORT_2 init_15_arg_1 = var_5; [L111] state_14 = init_15_arg_1 [L112] SORT_2 init_17_arg_1 = var_5; [L113] state_16 = init_17_arg_1 [L114] SORT_2 init_19_arg_1 = var_5; [L115] state_18 = init_19_arg_1 [L116] SORT_2 init_21_arg_1 = var_5; [L117] state_20 = init_21_arg_1 [L118] SORT_2 init_23_arg_1 = var_5; [L119] state_22 = init_23_arg_1 [L120] SORT_2 init_25_arg_1 = var_5; [L121] state_24 = init_25_arg_1 [L122] SORT_2 init_27_arg_1 = var_5; [L123] state_26 = init_27_arg_1 [L124] SORT_2 init_29_arg_1 = var_5; [L125] state_28 = init_29_arg_1 [L126] SORT_1 init_32_arg_1 = var_30; [L127] state_31 = init_32_arg_1 [L128] SORT_1 init_34_arg_1 = var_30; [L129] state_33 = init_34_arg_1 [L130] SORT_1 init_36_arg_1 = var_30; [L131] state_35 = init_36_arg_1 [L132] SORT_1 init_38_arg_1 = var_30; [L133] state_37 = init_38_arg_1 [L134] SORT_1 init_40_arg_1 = var_30; [L135] state_39 = init_40_arg_1 [L136] SORT_1 init_42_arg_1 = var_30; [L137] state_41 = init_42_arg_1 [L138] SORT_1 init_44_arg_1 = var_30; [L139] state_43 = init_44_arg_1 [L140] SORT_1 init_46_arg_1 = var_30; [L141] state_45 = init_46_arg_1 [L142] SORT_1 init_48_arg_1 = var_30; [L143] state_47 = init_48_arg_1 [L144] SORT_1 init_50_arg_1 = var_30; [L145] state_49 = init_50_arg_1 [L146] SORT_1 init_52_arg_1 = var_30; [L147] state_51 = init_52_arg_1 [L148] SORT_1 init_54_arg_1 = var_30; [L149] state_53 = init_54_arg_1 [L150] SORT_1 init_56_arg_1 = var_30; [L151] state_55 = init_56_arg_1 [L152] SORT_1 init_58_arg_1 = var_30; [L153] state_57 = init_58_arg_1 [L154] SORT_1 init_60_arg_1 = var_30; [L155] state_59 = init_60_arg_1 [L156] SORT_1 init_62_arg_1 = var_30; [L157] state_61 = init_62_arg_1 [L158] SORT_1 init_64_arg_1 = var_30; [L159] state_63 = init_64_arg_1 [L160] SORT_1 init_66_arg_1 = var_30; [L161] state_65 = init_66_arg_1 [L162] SORT_1 init_68_arg_1 = var_30; [L163] state_67 = init_68_arg_1 [L164] SORT_1 init_70_arg_1 = var_30; [L165] state_69 = init_70_arg_1 [L166] SORT_1 init_72_arg_1 = var_30; [L167] state_71 = init_72_arg_1 [L168] SORT_1 init_74_arg_1 = var_30; [L169] state_73 = init_74_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_8=0, var_117=12, var_140=2, var_181=15, var_198=10, var_30=0, var_5=0, var_75=0, var_77=20, var_81=3, var_85=1, var_91=4, var_93=2] [L172] input_82 = __VERIFIER_nondet_uchar() [L173] input_82 = input_82 & mask_SORT_1 [L174] input_92 = __VERIFIER_nondet_uchar() [L175] input_92 = input_92 & mask_SORT_1 [L176] input_98 = __VERIFIER_nondet_uchar() [L177] input_98 = input_98 & mask_SORT_1 [L178] input_122 = __VERIFIER_nondet_uchar() [L179] input_122 = input_122 & mask_SORT_1 [L180] input_125 = __VERIFIER_nondet_uchar() [L181] input_125 = input_125 & mask_SORT_1 [L182] input_126 = __VERIFIER_nondet_uchar() [L183] input_126 = input_126 & mask_SORT_1 [L184] input_127 = __VERIFIER_nondet_uchar() [L185] input_127 = input_127 & mask_SORT_1 [L186] input_128 = __VERIFIER_nondet_uchar() [L187] input_128 = input_128 & mask_SORT_1 [L188] input_147 = __VERIFIER_nondet_uchar() [L189] input_147 = input_147 & mask_SORT_1 [L190] input_148 = __VERIFIER_nondet_uchar() [L191] input_148 = input_148 & mask_SORT_1 [L192] input_170 = __VERIFIER_nondet_uchar() [L193] input_170 = input_170 & mask_SORT_1 [L194] input_174 = __VERIFIER_nondet_uchar() [L195] input_174 = input_174 & mask_SORT_1 [L196] input_217 = __VERIFIER_nondet_uchar() [L197] input_217 = input_217 & mask_SORT_1 [L198] input_220 = __VERIFIER_nondet_uchar() [L199] input_220 = input_220 & mask_SORT_1 [L200] input_241 = __VERIFIER_nondet_uchar() [L201] input_262 = __VERIFIER_nondet_uchar() [L204] SORT_3 var_76_arg_0 = var_75; [L205] SORT_2 var_76_arg_1 = state_28; [L206] SORT_4 var_76 = ((SORT_4)var_76_arg_0 << 8) | var_76_arg_1; [L207] var_76 = var_76 & mask_SORT_4 [L208] SORT_4 var_78_arg_0 = var_76; [L209] SORT_4 var_78_arg_1 = var_77; [L210] SORT_1 var_78 = var_78_arg_0 <= var_78_arg_1; [L211] SORT_1 var_79_arg_0 = ~state_73; [L212] var_79_arg_0 = var_79_arg_0 & mask_SORT_1 [L213] SORT_1 var_79_arg_1 = ~var_78; [L214] var_79_arg_1 = var_79_arg_1 & mask_SORT_1 [L215] SORT_1 var_79 = var_79_arg_0 & var_79_arg_1; [L216] var_79 = var_79 & mask_SORT_1 [L217] SORT_1 bad_80_arg_0 = var_79; [L218] CALL __VERIFIER_assert(!(bad_80_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: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 23:21:09,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3a363747858f755dcf7765e023ce6efb7203891cba18b65d67294674b3e7662e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:21:11,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:21:11,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:21:11,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:21:11,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:21:11,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:21:11,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:21:11,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:21:11,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:21:11,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:21:11,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:21:11,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:21:11,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:21:11,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:21:11,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:21:11,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:21:11,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:21:11,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:21:11,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:21:11,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:21:11,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:21:11,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:21:11,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:21:11,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:21:11,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:21:11,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:21:11,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:21:11,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:21:11,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:21:11,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:21:11,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:21:11,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:21:11,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:21:11,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:21:11,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:21:11,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:21:11,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:21:11,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:21:11,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:21:11,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:21:11,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:21:11,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-25 23:21:11,794 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:21:11,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:21:11,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:21:11,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:21:11,796 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:21:11,797 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:21:11,797 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:21:11,797 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:21:11,798 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:21:11,798 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:21:11,799 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:21:11,800 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:21:11,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:21:11,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:21:11,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:21:11,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:21:11,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:21:11,802 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:21:11,802 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 23:21:11,803 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 23:21:11,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:21:11,803 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:21:11,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:21:11,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:21:11,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 23:21:11,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:21:11,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:21:11,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:21:11,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:21:11,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:21:11,806 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 23:21:11,807 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 23:21:11,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:21:11,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:21:11,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 23:21:11,808 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_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a363747858f755dcf7765e023ce6efb7203891cba18b65d67294674b3e7662e [2022-11-25 23:21:12,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:21:12,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:21:12,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:21:12,257 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:21:12,258 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:21:12,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-25 23:21:15,308 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:21:15,704 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:21:15,704 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-25 23:21:15,716 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/data/8f155a358/a0acc15850b24cfd88841fca4c9dea43/FLAGe40a2c4c3 [2022-11-25 23:21:15,732 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/data/8f155a358/a0acc15850b24cfd88841fca4c9dea43 [2022-11-25 23:21:15,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:21:15,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:21:15,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:21:15,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:21:15,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:21:15,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:21:15" (1/1) ... [2022-11-25 23:21:15,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181a8296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:15, skipping insertion in model container [2022-11-25 23:21:15,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:21:15" (1/1) ... [2022-11-25 23:21:15,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:21:15,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:21:16,049 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_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c[1014,1027] [2022-11-25 23:21:16,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:21:16,477 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:21:16,489 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_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c[1014,1027] [2022-11-25 23:21:16,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:21:16,639 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:21:16,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16 WrapperNode [2022-11-25 23:21:16,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:21:16,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:21:16,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:21:16,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:21:16,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,789 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1482 [2022-11-25 23:21:16,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:21:16,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:21:16,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:21:16,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:21:16,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,850 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:21:16,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:21:16,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:21:16,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:21:16,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:21:16,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:21:16,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:21:16,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:21:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:21:16,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:21:17,437 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:21:17,439 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:21:19,790 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:21:19,797 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:21:19,797 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:21:19,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:21:19 BoogieIcfgContainer [2022-11-25 23:21:19,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:21:19,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:21:19,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:21:19,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:21:19,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:21:15" (1/3) ... [2022-11-25 23:21:19,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d350fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:21:19, skipping insertion in model container [2022-11-25 23:21:19,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (2/3) ... [2022-11-25 23:21:19,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d350fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:21:19, skipping insertion in model container [2022-11-25 23:21:19,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:21:19" (3/3) ... [2022-11-25 23:21:19,809 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-25 23:21:19,828 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:21:19,828 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:21:19,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:21:19,879 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;@1c7f017b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:21:19,879 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:21:19,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:19,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:21:19,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:19,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:21:19,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:21:19,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:19,897 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-25 23:21:19,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:21:19,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316096842] [2022-11-25 23:21:19,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:19,914 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:21:19,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:21:19,927 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:21:19,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 23:21:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:20,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 23:21:20,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:21:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:20,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:21:20,507 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:21:20,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316096842] [2022-11-25 23:21:20,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316096842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:21:20,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:21:20,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:21:20,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821618496] [2022-11-25 23:21:20,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:21:20,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:21:20,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:21:20,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:21:20,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:21:20,593 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:20,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:21:20,872 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-25 23:21:20,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:21:20,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 23:21:20,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:21:20,885 INFO L225 Difference]: With dead ends: 20 [2022-11-25 23:21:20,885 INFO L226 Difference]: Without dead ends: 11 [2022-11-25 23:21:20,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:21:20,892 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:21:20,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:21:20,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-25 23:21:20,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-25 23:21:20,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-25 23:21:20,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-25 23:21:20,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:21:20,928 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-25 23:21:20,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:20,928 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-25 23:21:20,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:21:20,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:20,929 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 23:21:20,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:21:21,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:21:21,141 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:21:21,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:21,142 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-25 23:21:21,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:21:21,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598236841] [2022-11-25 23:21:21,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:21,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:21:21,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:21:21,147 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:21:21,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 23:21:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:22,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-25 23:21:22,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:21:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:22,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:21:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:23,498 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:21:23,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598236841] [2022-11-25 23:21:23,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598236841] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:21:23,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [299950798] [2022-11-25 23:21:23,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:23,501 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:21:23,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:21:23,505 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:21:23,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-25 23:21:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:24,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-25 23:21:24,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:21:25,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:25,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:21:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:27,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [299950798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:21:27,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348487289] [2022-11-25 23:21:27,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:27,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:21:27,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:21:27,627 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:21:27,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:21:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:28,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-25 23:21:28,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:21:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:28,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:21:29,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:29,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348487289] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:21:29,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:21:29,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 12 [2022-11-25 23:21:29,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474248623] [2022-11-25 23:21:29,398 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:21:29,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:21:29,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:21:29,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:21:29,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:21:29,401 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:32,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 23:21:33,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:21:33,897 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-25 23:21:33,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 23:21:33,898 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 23:21:33,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:21:33,898 INFO L225 Difference]: With dead ends: 19 [2022-11-25 23:21:33,898 INFO L226 Difference]: Without dead ends: 17 [2022-11-25 23:21:33,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-25 23:21:33,900 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:21:33,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 18 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-25 23:21:33,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-25 23:21:33,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-25 23:21:33,907 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) [2022-11-25 23:21:33,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-25 23:21:33,908 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-25 23:21:33,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:21:33,909 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-25 23:21:33,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:33,909 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-25 23:21:33,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 23:21:33,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:33,910 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-25 23:21:33,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:21:34,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:21:34,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:21:34,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:21:34,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:21:34,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:34,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-11-25 23:21:34,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:21:34,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272103303] [2022-11-25 23:21:34,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 23:21:34,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:21:34,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:21:34,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:21:34,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 23:21:36,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 23:21:36,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:21:36,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 3670 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-25 23:21:36,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:21:37,311 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:37,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:22:37,669 WARN L233 SmtUtils]: Spent 46.43s on a formula simplification. DAG size of input: 159 DAG size of output: 144 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:22:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:22:37,710 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:22:37,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272103303] [2022-11-25 23:22:37,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272103303] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:22:37,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1931210529] [2022-11-25 23:22:37,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 23:22:37,711 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:22:37,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:22:37,717 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:22:37,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-25 23:22:40,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 23:22:40,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:22:40,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 3670 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-25 23:22:40,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:22:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:22:41,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:23:36,314 WARN L233 SmtUtils]: Spent 48.09s on a formula simplification. DAG size of input: 159 DAG size of output: 144 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:23:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:36,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1931210529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:23:36,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266825170] [2022-11-25 23:23:36,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 23:23:36,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:36,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:23:36,358 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:23:36,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:23:37,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 23:23:37,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:23:37,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 3670 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-25 23:23:37,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:23:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:23:39,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:24:29,453 WARN L233 SmtUtils]: Spent 29.71s on a formula simplification. DAG size of input: 226 DAG size of output: 204 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:24:39,015 WARN L233 SmtUtils]: Spent 6.44s on a formula simplification that was a NOOP. DAG size: 208 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:25:21,095 WARN L233 SmtUtils]: Spent 29.03s on a formula simplification. DAG size of input: 207 DAG size of output: 196 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:25:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:25:21,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266825170] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:25:21,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:25:21,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 12, 12] total 37 [2022-11-25 23:25:21,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701096886] [2022-11-25 23:25:21,139 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:25:21,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-25 23:25:21,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:25:21,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-25 23:25:21,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=949, Unknown=16, NotChecked=0, Total=1332 [2022-11-25 23:25:21,148 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 37 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:27:39,335 WARN L233 SmtUtils]: Spent 1.55m on a formula simplification. DAG size of input: 498 DAG size of output: 173 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:27:41,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 23:27:43,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 23:27:44,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 23:27:46,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 23:27:48,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 23:28:03,537 WARN L233 SmtUtils]: Spent 14.32s on a formula simplification. DAG size of input: 213 DAG size of output: 184 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:28:33,866 WARN L233 SmtUtils]: Spent 12.05s on a formula simplification that was a NOOP. DAG size: 227 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:28:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:28:33,869 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-11-25 23:28:33,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 23:28:33,870 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 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 [2022-11-25 23:28:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:28:33,870 INFO L225 Difference]: With dead ends: 31 [2022-11-25 23:28:33,870 INFO L226 Difference]: Without dead ends: 29 [2022-11-25 23:28:33,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 393.3s TimeCoverageRelationStatistics Valid=713, Invalid=1798, Unknown=39, NotChecked=0, Total=2550 [2022-11-25 23:28:33,873 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 53 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:28:33,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 47 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2022-11-25 23:28:33,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-25 23:28:33,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-11-25 23:28:33,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:28:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-11-25 23:28:33,889 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2022-11-25 23:28:33,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:28:33,890 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-11-25 23:28:33,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:28:33,891 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-11-25 23:28:33,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-25 23:28:33,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:28:33,892 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1] [2022-11-25 23:28:33,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:28:34,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:28:34,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-25 23:28:34,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:28:34,521 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:28:34,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:28:34,522 INFO L85 PathProgramCache]: Analyzing trace with hash -752690141, now seen corresponding path program 3 times [2022-11-25 23:28:34,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:28:34,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935017310] [2022-11-25 23:28:34,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:28:34,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:28:34,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:28:34,527 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:28:34,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 23:28:38,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-25 23:28:38,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:28:38,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 8402 conjuncts, 121 conjunts are in the unsatisfiable core [2022-11-25 23:28:38,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:28:44,910 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:28:44,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:29:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:29:13,030 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:29:13,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935017310] [2022-11-25 23:29:13,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935017310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:29:13,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1755518096] [2022-11-25 23:29:13,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:29:13,031 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:29:13,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:29:13,037 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:29:13,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f06868f8-f8b8-4bb1-b754-3ea1c8a5543b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-25 23:31:28,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-25 23:31:28,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:31:28,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 8402 conjuncts, 357 conjunts are in the unsatisfiable core [2022-11-25 23:31:28,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:32:17,042 WARN L233 SmtUtils]: Spent 46.74s on a formula simplification. DAG size of input: 163 DAG size of output: 153 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:32:51,415 WARN L233 SmtUtils]: Spent 32.34s on a formula simplification that was a NOOP. DAG size: 173 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)