./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.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_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/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_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/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_58053d18-9427-4b21-891f-d33725ca58b9/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 847d08069fea111ec08fee8233026ce04a978bd5cfe20961eef37343cf6b12ba --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:13:55,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:13:55,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:13:55,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:13:55,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:13:55,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:13:55,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:13:55,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:13:55,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:13:55,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:13:55,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:13:55,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:13:55,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:13:55,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:13:55,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:13:55,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:13:55,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:13:55,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:13:55,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:13:55,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:13:55,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:13:55,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:13:55,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:13:55,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:13:55,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:13:55,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:13:55,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:13:55,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:13:55,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:13:55,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:13:55,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:13:55,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:13:55,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:13:55,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:13:55,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:13:55,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:13:55,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:13:55,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:13:55,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:13:55,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:13:55,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:13:55,228 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:13:55,273 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:13:55,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:13:55,274 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:13:55,274 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:13:55,275 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:13:55,275 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:13:55,275 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:13:55,275 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:13:55,275 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:13:55,276 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:13:55,276 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:13:55,277 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:13:55,277 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:13:55,277 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:13:55,277 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:13:55,277 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:13:55,278 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:13:55,278 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:13:55,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:13:55,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:13:55,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:13:55,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:13:55,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:13:55,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:13:55,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:13:55,280 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:13:55,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:13:55,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:13:55,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:13:55,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:13:55,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:13:55,282 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:13:55,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:13:55,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:13:55,282 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:13:55,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:13:55,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:13:55,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:13:55,283 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_58053d18-9427-4b21-891f-d33725ca58b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 847d08069fea111ec08fee8233026ce04a978bd5cfe20961eef37343cf6b12ba [2022-11-26 00:13:55,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:13:55,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:13:55,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:13:55,679 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:13:55,679 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:13:55,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c [2022-11-26 00:13:58,613 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:13:58,972 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:13:58,973 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c [2022-11-26 00:13:58,991 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/data/0a5fa52ae/9a3bc73076d84dadb6ee49ff896c853e/FLAG9e878ac6c [2022-11-26 00:13:59,026 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/data/0a5fa52ae/9a3bc73076d84dadb6ee49ff896c853e [2022-11-26 00:13:59,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:13:59,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:13:59,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:13:59,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:13:59,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:13:59,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:13:59" (1/1) ... [2022-11-26 00:13:59,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ad8c2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:59, skipping insertion in model container [2022-11-26 00:13:59,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:13:59" (1/1) ... [2022-11-26 00:13:59,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:13:59,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:13:59,350 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_58053d18-9427-4b21-891f-d33725ca58b9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c[1107,1120] [2022-11-26 00:13:59,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:13:59,836 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:13:59,844 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_58053d18-9427-4b21-891f-d33725ca58b9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c[1107,1120] [2022-11-26 00:14:00,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:14:00,055 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:14:00,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:14:00 WrapperNode [2022-11-26 00:14:00,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:14:00,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:14:00,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:14:00,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:14:00,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:14:00" (1/1) ... [2022-11-26 00:14:00,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:14:00" (1/1) ... [2022-11-26 00:14:00,277 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1898 [2022-11-26 00:14:00,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:14:00,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:14:00,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:14:00,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:14:00,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:14:00" (1/1) ... [2022-11-26 00:14:00,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:14:00" (1/1) ... [2022-11-26 00:14:00,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:14:00" (1/1) ... [2022-11-26 00:14:00,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:14:00" (1/1) ... [2022-11-26 00:14:00,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:14:00" (1/1) ... [2022-11-26 00:14:00,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:14:00" (1/1) ... [2022-11-26 00:14:00,349 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:14:00" (1/1) ... [2022-11-26 00:14:00,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:14:00" (1/1) ... [2022-11-26 00:14:00,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:14:00,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:14:00,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:14:00,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:14:00,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:14:00" (1/1) ... [2022-11-26 00:14:00,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:14:00,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:14:00,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:14:00,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:14:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:14:00,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:14:00,963 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:14:00,965 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:15:31,112 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:15:31,167 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:15:31,167 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:15:31,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:15:31 BoogieIcfgContainer [2022-11-26 00:15:31,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:15:31,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:15:31,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:15:31,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:15:31,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:13:59" (1/3) ... [2022-11-26 00:15:31,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a83aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:15:31, skipping insertion in model container [2022-11-26 00:15:31,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:14:00" (2/3) ... [2022-11-26 00:15:31,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a83aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:15:31, skipping insertion in model container [2022-11-26 00:15:31,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:15:31" (3/3) ... [2022-11-26 00:15:31,181 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_BufAl.c [2022-11-26 00:15:31,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:15:31,200 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:15:31,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:15:31,255 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;@10b12e54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:15:31,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:15:31,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:31,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:15:31,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:31,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:15:31,267 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:15:31,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:31,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1797488, now seen corresponding path program 1 times [2022-11-26 00:15:31,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:15:31,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989937377] [2022-11-26 00:15:31,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:31,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:15:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:15:31,553 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:15:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:15:31,770 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:15:31,772 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:15:31,773 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:15:31,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:15:31,780 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:15:31,784 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:15:31,805 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:15:31,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:15:31 BoogieIcfgContainer [2022-11-26 00:15:31,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:15:31,814 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:15:31,814 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:15:31,814 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:15:31,815 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:15:31" (3/4) ... [2022-11-26 00:15:31,818 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:15:31,818 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:15:31,819 INFO L158 Benchmark]: Toolchain (without parser) took 92788.52ms. Allocated memory was 167.8MB in the beginning and 690.0MB in the end (delta: 522.2MB). Free memory was 138.3MB in the beginning and 605.5MB in the end (delta: -467.2MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. [2022-11-26 00:15:31,820 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory is still 93.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:15:31,820 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1024.85ms. Allocated memory is still 167.8MB. Free memory was 138.0MB in the beginning and 78.8MB in the end (delta: 59.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2022-11-26 00:15:31,821 INFO L158 Benchmark]: Boogie Procedure Inliner took 220.09ms. Allocated memory is still 167.8MB. Free memory was 78.8MB in the beginning and 117.6MB in the end (delta: -38.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-26 00:15:31,821 INFO L158 Benchmark]: Boogie Preprocessor took 98.16ms. Allocated memory is still 167.8MB. Free memory was 117.6MB in the beginning and 109.2MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-26 00:15:31,822 INFO L158 Benchmark]: RCFGBuilder took 90793.52ms. Allocated memory was 167.8MB in the beginning and 690.0MB in the end (delta: 522.2MB). Free memory was 109.2MB in the beginning and 243.7MB in the end (delta: -134.5MB). Peak memory consumption was 412.5MB. Max. memory is 16.1GB. [2022-11-26 00:15:31,823 INFO L158 Benchmark]: TraceAbstraction took 640.19ms. Allocated memory is still 690.0MB. Free memory was 243.7MB in the beginning and 605.5MB in the end (delta: -361.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:15:31,823 INFO L158 Benchmark]: Witness Printer took 4.33ms. Allocated memory is still 690.0MB. Free memory is still 605.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:15:31,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory is still 93.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1024.85ms. Allocated memory is still 167.8MB. Free memory was 138.0MB in the beginning and 78.8MB in the end (delta: 59.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 220.09ms. Allocated memory is still 167.8MB. Free memory was 78.8MB in the beginning and 117.6MB in the end (delta: -38.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 98.16ms. Allocated memory is still 167.8MB. Free memory was 117.6MB in the beginning and 109.2MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 90793.52ms. Allocated memory was 167.8MB in the beginning and 690.0MB in the end (delta: 522.2MB). Free memory was 109.2MB in the beginning and 243.7MB in the end (delta: -134.5MB). Peak memory consumption was 412.5MB. Max. memory is 16.1GB. * TraceAbstraction took 640.19ms. Allocated memory is still 690.0MB. Free memory was 243.7MB in the beginning and 605.5MB in the end (delta: -361.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.33ms. Allocated memory is still 690.0MB. Free memory is still 605.5MB. 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 162, overapproximation of bitwiseOr at line 160, overapproximation of bitwiseAnd at line 135. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L31] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 5); [L32] const SORT_7 msb_SORT_7 = (SORT_7)1 << (5 - 1); [L34] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 32); [L35] const SORT_12 msb_SORT_12 = (SORT_12)1 << (32 - 1); [L37] const SORT_7 var_8 = 0; [L38] const SORT_12 var_14 = 0; [L39] const SORT_1 var_22 = 1; [L40] const SORT_1 var_26 = 0; [L41] const SORT_12 var_29 = 15; [L42] const SORT_12 var_79 = 14; [L43] const SORT_12 var_97 = 13; [L44] const SORT_12 var_115 = 12; [L45] const SORT_12 var_133 = 11; [L46] const SORT_12 var_151 = 10; [L47] const SORT_12 var_169 = 9; [L48] const SORT_12 var_187 = 8; [L49] const SORT_12 var_205 = 7; [L50] const SORT_12 var_223 = 6; [L51] const SORT_12 var_241 = 5; [L52] const SORT_12 var_259 = 4; [L53] const SORT_12 var_277 = 3; [L54] const SORT_12 var_295 = 2; [L55] const SORT_12 var_313 = 1; [L56] const SORT_4 var_352 = 0; [L57] const SORT_12 var_356 = 16; [L59] SORT_1 input_2; [L60] SORT_1 input_3; [L61] SORT_4 input_5; [L62] SORT_1 input_6; [L63] SORT_1 input_391; [L64] SORT_4 input_393; [L65] SORT_1 input_409; [L66] SORT_4 input_413; [L68] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L69] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L70] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L71] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L72] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L73] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_58 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_66 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_350 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_4 state_353 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L89] SORT_7 init_10_arg_1 = var_8; [L90] state_9 = init_10_arg_1 [L91] SORT_1 init_28_arg_1 = var_26; [L92] state_27 = init_28_arg_1 [L93] SORT_1 init_31_arg_1 = var_26; [L94] state_30 = init_31_arg_1 [L95] SORT_1 init_33_arg_1 = var_26; [L96] state_32 = init_33_arg_1 [L97] SORT_1 init_36_arg_1 = var_26; [L98] state_35 = init_36_arg_1 [L99] SORT_1 init_38_arg_1 = var_26; [L100] state_37 = init_38_arg_1 [L101] SORT_1 init_42_arg_1 = var_26; [L102] state_41 = init_42_arg_1 [L103] SORT_1 init_44_arg_1 = var_26; [L104] state_43 = init_44_arg_1 [L105] SORT_1 init_47_arg_1 = var_26; [L106] state_46 = init_47_arg_1 [L107] SORT_1 init_49_arg_1 = var_26; [L108] state_48 = init_49_arg_1 [L109] SORT_1 init_54_arg_1 = var_26; [L110] state_53 = init_54_arg_1 [L111] SORT_1 init_56_arg_1 = var_26; [L112] state_55 = init_56_arg_1 [L113] SORT_1 init_59_arg_1 = var_26; [L114] state_58 = init_59_arg_1 [L115] SORT_1 init_61_arg_1 = var_26; [L116] state_60 = init_61_arg_1 [L117] SORT_1 init_65_arg_1 = var_26; [L118] state_64 = init_65_arg_1 [L119] SORT_1 init_67_arg_1 = var_26; [L120] state_66 = init_67_arg_1 [L121] SORT_1 init_70_arg_1 = var_26; [L122] state_69 = init_70_arg_1 [L123] SORT_1 init_72_arg_1 = var_26; [L124] state_71 = init_72_arg_1 [L125] SORT_1 init_351_arg_1 = var_26; [L126] state_350 = init_351_arg_1 [L127] SORT_4 init_354_arg_1 = var_352; [L128] state_353 = init_354_arg_1 VAL [init_10_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_351_arg_1=0, init_354_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_47_arg_1=0, init_49_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_59_arg_1=0, init_61_arg_1=0, init_65_arg_1=0, init_67_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, mask_SORT_1=1, mask_SORT_12=4294967295, mask_SORT_4=15, mask_SORT_7=31, msb_SORT_1=1, msb_SORT_12=2147483648, msb_SORT_4=8, msb_SORT_7=16, state_27=0, state_30=0, state_32=0, state_35=0, state_350=0, state_353=0, state_37=0, state_41=0, state_43=0, state_46=0, state_48=0, state_53=0, state_55=0, state_58=0, state_60=0, state_64=0, state_66=0, state_69=0, state_71=0, state_9=0, var_115=12, var_133=11, var_14=0, var_151=10, var_169=9, var_187=8, var_205=7, var_22=1, var_223=6, var_241=5, var_259=4, var_26=0, var_277=3, var_29=15, var_295=2, var_313=1, var_352=0, var_356=16, var_79=14, var_8=0, var_97=13] [L131] input_2 = __VERIFIER_nondet_uchar() [L132] input_3 = __VERIFIER_nondet_uchar() [L133] input_5 = __VERIFIER_nondet_uchar() [L134] input_6 = __VERIFIER_nondet_uchar() [L135] input_6 = input_6 & mask_SORT_1 [L136] input_391 = __VERIFIER_nondet_uchar() [L137] input_393 = __VERIFIER_nondet_uchar() [L138] input_409 = __VERIFIER_nondet_uchar() [L139] input_413 = __VERIFIER_nondet_uchar() [L142] SORT_7 var_11_arg_0 = state_9; [L143] SORT_1 var_11 = var_11_arg_0 >> 4; [L144] SORT_1 var_13_arg_0 = var_11; [L145] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L146] SORT_12 var_13 = var_13_arg_0; [L147] SORT_12 var_15_arg_0 = var_13; [L148] SORT_12 var_15_arg_1 = var_14; [L149] SORT_1 var_15 = var_15_arg_0 == var_15_arg_1; [L150] SORT_7 var_16_arg_0 = state_9; [L151] SORT_4 var_16 = var_16_arg_0 >> 0; [L152] SORT_4 var_17_arg_0 = var_16; [L153] var_17_arg_0 = var_17_arg_0 & mask_SORT_4 [L154] SORT_12 var_17 = var_17_arg_0; [L155] SORT_12 var_18_arg_0 = var_17; [L156] SORT_12 var_18_arg_1 = var_14; [L157] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L158] SORT_1 var_19_arg_0 = var_15; [L159] SORT_1 var_19_arg_1 = var_18; [L160] SORT_1 var_19 = var_19_arg_0 | var_19_arg_1; [L161] SORT_1 var_23_arg_0 = var_19; [L162] SORT_1 var_23 = ~var_23_arg_0; [L163] SORT_1 var_24_arg_0 = var_22; [L164] SORT_1 var_24_arg_1 = var_23; [L165] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L166] var_24 = var_24 & mask_SORT_1 [L167] SORT_1 bad_25_arg_0 = var_24; [L168] CALL __VERIFIER_assert(!(bad_25_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: 0.5s, 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 [2022-11-26 00:15:31,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/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_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/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_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/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_58053d18-9427-4b21-891f-d33725ca58b9/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 847d08069fea111ec08fee8233026ce04a978bd5cfe20961eef37343cf6b12ba --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:15:34,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:15:34,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:15:34,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:15:34,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:15:34,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:15:34,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:15:34,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:15:34,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:15:34,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:15:34,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:15:34,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:15:34,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:15:34,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:15:34,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:15:34,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:15:34,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:15:34,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:15:34,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:15:34,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:15:34,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:15:34,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:15:34,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:15:34,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:15:34,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:15:34,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:15:34,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:15:34,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:15:34,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:15:34,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:15:34,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:15:34,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:15:34,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:15:34,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:15:34,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:15:34,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:15:34,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:15:34,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:15:34,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:15:34,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:15:34,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:15:34,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-26 00:15:34,413 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:15:34,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:15:34,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:15:34,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:15:34,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:15:34,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:15:34,416 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:15:34,416 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:15:34,417 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:15:34,417 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:15:34,418 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:15:34,418 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:15:34,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:15:34,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:15:34,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:15:34,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:15:34,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:15:34,420 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:15:34,420 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:15:34,420 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:15:34,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:15:34,421 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:15:34,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:15:34,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:15:34,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:15:34,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:15:34,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:15:34,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:15:34,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:15:34,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:15:34,423 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:15:34,423 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:15:34,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:15:34,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:15:34,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:15:34,424 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_58053d18-9427-4b21-891f-d33725ca58b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 847d08069fea111ec08fee8233026ce04a978bd5cfe20961eef37343cf6b12ba [2022-11-26 00:15:34,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:15:34,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:15:34,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:15:34,922 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:15:34,922 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:15:34,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c [2022-11-26 00:15:38,026 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:15:38,396 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:15:38,397 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c [2022-11-26 00:15:38,414 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/data/12f1eacfc/122ccbaf7f904cba91a88d01fa56ccf5/FLAGe9897520d [2022-11-26 00:15:38,429 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/data/12f1eacfc/122ccbaf7f904cba91a88d01fa56ccf5 [2022-11-26 00:15:38,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:15:38,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:15:38,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:15:38,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:15:38,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:15:38,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:15:38" (1/1) ... [2022-11-26 00:15:38,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32be749d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:38, skipping insertion in model container [2022-11-26 00:15:38,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:15:38" (1/1) ... [2022-11-26 00:15:38,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:15:38,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:15:38,692 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_58053d18-9427-4b21-891f-d33725ca58b9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c[1107,1120] [2022-11-26 00:15:39,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:15:39,087 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:15:39,097 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_58053d18-9427-4b21-891f-d33725ca58b9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c[1107,1120] [2022-11-26 00:15:39,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:15:39,284 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:15:39,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:39 WrapperNode [2022-11-26 00:15:39,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:15:39,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:15:39,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:15:39,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:15:39,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:39" (1/1) ... [2022-11-26 00:15:39,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:39" (1/1) ... [2022-11-26 00:15:39,457 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1898 [2022-11-26 00:15:39,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:15:39,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:15:39,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:15:39,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:15:39,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:39" (1/1) ... [2022-11-26 00:15:39,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:39" (1/1) ... [2022-11-26 00:15:39,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:39" (1/1) ... [2022-11-26 00:15:39,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:39" (1/1) ... [2022-11-26 00:15:39,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:39" (1/1) ... [2022-11-26 00:15:39,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:39" (1/1) ... [2022-11-26 00:15:39,554 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:39" (1/1) ... [2022-11-26 00:15:39,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:39" (1/1) ... [2022-11-26 00:15:39,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:15:39,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:15:39,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:15:39,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:15:39,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:39" (1/1) ... [2022-11-26 00:15:39,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:15:39,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:15:39,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:15:39,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:15:39,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:15:39,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:15:40,246 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:15:40,248 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:15:44,064 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:15:44,075 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:15:44,076 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:15:44,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:15:44 BoogieIcfgContainer [2022-11-26 00:15:44,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:15:44,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:15:44,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:15:44,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:15:44,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:15:38" (1/3) ... [2022-11-26 00:15:44,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eeaa23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:15:44, skipping insertion in model container [2022-11-26 00:15:44,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:39" (2/3) ... [2022-11-26 00:15:44,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eeaa23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:15:44, skipping insertion in model container [2022-11-26 00:15:44,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:15:44" (3/3) ... [2022-11-26 00:15:44,090 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_BufAl.c [2022-11-26 00:15:44,108 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:15:44,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:15:44,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:15:44,173 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;@681527b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:15:44,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:15:44,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:44,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:15:44,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:44,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:15:44,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:15:44,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:44,193 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-26 00:15:44,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:44,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175623297] [2022-11-26 00:15:44,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:44,209 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:44,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:44,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:15:44,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 00:15:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:44,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-26 00:15:44,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:44,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:15:44,856 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:44,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175623297] [2022-11-26 00:15:44,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175623297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:15:44,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:15:44,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:15:44,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517370114] [2022-11-26 00:15:44,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:15:44,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:15:44,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:44,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:15:44,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:15:44,893 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:45,152 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-26 00:15:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:15:45,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 00:15:45,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:45,162 INFO L225 Difference]: With dead ends: 20 [2022-11-26 00:15:45,162 INFO L226 Difference]: Without dead ends: 11 [2022-11-26 00:15:45,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:15:45,169 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 [2022-11-26 00:15:45,170 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] [2022-11-26 00:15:45,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-26 00:15:45,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-26 00:15:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:45,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 00:15:45,199 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-26 00:15:45,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:45,200 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 00:15:45,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:45,200 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 00:15:45,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:15:45,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:45,201 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:15:45,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:15:45,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:45,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:15:45,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:45,415 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-26 00:15:45,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:45,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096145013] [2022-11-26 00:15:45,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:45,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:45,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:45,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:15:45,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-26 00:15:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:46,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-26 00:15:46,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:46,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:15:47,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:47,109 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:15:47,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096145013] [2022-11-26 00:15:47,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096145013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:15:47,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1469581890] [2022-11-26 00:15:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:47,115 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:15:47,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:15:47,149 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:15:47,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-26 00:15:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:49,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-26 00:15:49,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:49,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:15:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:49,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1469581890] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:15:49,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470003739] [2022-11-26 00:15:49,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:15:49,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:15:49,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:15:49,402 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:15:49,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:15:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:15:50,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-26 00:15:50,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:50,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:15:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:50,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470003739] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:15:50,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:15:50,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-26 00:15:50,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589328669] [2022-11-26 00:15:50,873 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:15:50,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:15:50,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:15:50,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:15:50,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:15:50,875 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 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) [2022-11-26 00:15:51,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:15:51,290 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-26 00:15:51,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:15:51,291 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 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 [2022-11-26 00:15:51,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:15:51,292 INFO L225 Difference]: With dead ends: 16 [2022-11-26 00:15:51,292 INFO L226 Difference]: Without dead ends: 14 [2022-11-26 00:15:51,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:15:51,293 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:15:51,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 16 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:15:51,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-26 00:15:51,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-26 00:15:51,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:15:51,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-26 00:15:51,298 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-26 00:15:51,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:15:51,298 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-26 00:15:51,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 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) [2022-11-26 00:15:51,299 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-26 00:15:51,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:15:51,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:15:51,299 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-26 00:15:51,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:15:51,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:15:51,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/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 [2022-11-26 00:15:51,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:15:51,908 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:15:51,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:15:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-26 00:15:51,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:15:51,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858510392] [2022-11-26 00:15:51,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:15:51,914 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 [2022-11-26 00:15:51,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:15:51,916 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:15:51,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58053d18-9427-4b21-891f-d33725ca58b9/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 [2022-11-26 00:15:53,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:15:53,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:15:53,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 3491 conjuncts, 356 conjunts are in the unsatisfiable core [2022-11-26 00:15:53,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:15:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:15:58,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:19:27,435 WARN L233 SmtUtils]: Spent 3.43m on a formula simplification. DAG size of input: 583 DAG size of output: 543 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)