./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba --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 7079b3b743df1a5b92403bcbdc45dcbd5b2b4b373695675f6bb47b5ecc70ce4f --- 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-b5237d8 [2022-11-22 01:32:56,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:32:56,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:32:56,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:32:56,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:32:56,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:32:56,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:32:56,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:32:56,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:32:56,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:32:56,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:32:56,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:32:56,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:32:56,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:32:56,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:32:56,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:32:56,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:32:56,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:32:56,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:32:56,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:32:56,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:32:56,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:32:56,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:32:56,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:32:56,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:32:56,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:32:56,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:32:56,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:32:56,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:32:56,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:32:56,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:32:56,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:32:56,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:32:56,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:32:56,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:32:56,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:32:56,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:32:56,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:32:56,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:32:56,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:32:56,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:32:56,201 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:32:56,233 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:32:56,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:32:56,234 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:32:56,234 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:32:56,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:32:56,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:32:56,235 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:32:56,235 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:32:56,236 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:32:56,236 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:32:56,236 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:32:56,236 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:32:56,237 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:32:56,237 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:32:56,237 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:32:56,237 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:32:56,237 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:32:56,238 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:32:56,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:32:56,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:32:56,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:32:56,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:32:56,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:32:56,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:32:56,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:32:56,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:32:56,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:32:56,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:32:56,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:32:56,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:32:56,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:32:56,241 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:32:56,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:32:56,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:32:56,242 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:32:56,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:32:56,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:32:56,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:32:56,243 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_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7079b3b743df1a5b92403bcbdc45dcbd5b2b4b373695675f6bb47b5ecc70ce4f [2022-11-22 01:32:56,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:32:56,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:32:56,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:32:56,517 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:32:56,518 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:32:56,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c [2022-11-22 01:32:59,568 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:32:59,926 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:32:59,927 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c [2022-11-22 01:32:59,943 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/data/1fb093ab4/0fcebcdab1e64b63813506fa1d9b4994/FLAG93fb5845a [2022-11-22 01:32:59,957 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/data/1fb093ab4/0fcebcdab1e64b63813506fa1d9b4994 [2022-11-22 01:32:59,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:32:59,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:32:59,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:32:59,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:32:59,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:32:59,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:32:59" (1/1) ... [2022-11-22 01:32:59,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51748a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:32:59, skipping insertion in model container [2022-11-22 01:32:59,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:32:59" (1/1) ... [2022-11-22 01:32:59,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:33:00,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:33:00,278 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_916065b8-05f6-4b28-a6dd-1d46a604c998/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c[1014,1027] [2022-11-22 01:33:00,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:33:00,705 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:33:00,714 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_916065b8-05f6-4b28-a6dd-1d46a604c998/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c[1014,1027] [2022-11-22 01:33:00,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:33:00,952 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:33:00,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:00 WrapperNode [2022-11-22 01:33:00,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:33:00,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:33:00,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:33:00,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:33:00,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:00" (1/1) ... [2022-11-22 01:33:01,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:00" (1/1) ... [2022-11-22 01:33:01,156 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1847 [2022-11-22 01:33:01,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:33:01,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:33:01,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:33:01,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:33:01,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:00" (1/1) ... [2022-11-22 01:33:01,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:00" (1/1) ... [2022-11-22 01:33:01,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:00" (1/1) ... [2022-11-22 01:33:01,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:00" (1/1) ... [2022-11-22 01:33:01,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:00" (1/1) ... [2022-11-22 01:33:01,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:00" (1/1) ... [2022-11-22 01:33:01,320 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:00" (1/1) ... [2022-11-22 01:33:01,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:00" (1/1) ... [2022-11-22 01:33:01,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:33:01,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:33:01,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:33:01,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:33:01,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:00" (1/1) ... [2022-11-22 01:33:01,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:33:01,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:33:01,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:33:01,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:33:01,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:33:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:33:01,916 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:33:01,919 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:37:44,636 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:37:44,696 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:37:44,698 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:37:44,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:44 BoogieIcfgContainer [2022-11-22 01:37:44,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:37:44,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:37:44,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:37:44,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:37:44,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:32:59" (1/3) ... [2022-11-22 01:37:44,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38059348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:37:44, skipping insertion in model container [2022-11-22 01:37:44,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:33:00" (2/3) ... [2022-11-22 01:37:44,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38059348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:37:44, skipping insertion in model container [2022-11-22 01:37:44,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:44" (3/3) ... [2022-11-22 01:37:44,723 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.4.prop1-func-interl.c [2022-11-22 01:37:44,745 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:37:44,745 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:37:44,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:37:44,820 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;@a0f1620, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:37:44,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:37:44,826 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) [2022-11-22 01:37:44,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:37:44,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:44,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:37:44,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:44,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:44,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-22 01:37:44,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:44,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858405870] [2022-11-22 01:37:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:44,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:37:45,223 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 01:37:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:37:45,386 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 01:37:45,388 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 01:37:45,389 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 01:37:45,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:37:45,398 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-22 01:37:45,403 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:37:45,440 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 01:37:45,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:37:45 BoogieIcfgContainer [2022-11-22 01:37:45,462 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:37:45,464 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:37:45,464 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:37:45,465 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:37:45,466 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:44" (3/4) ... [2022-11-22 01:37:45,470 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 01:37:45,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:37:45,472 INFO L158 Benchmark]: Toolchain (without parser) took 285510.30ms. Allocated memory was 157.3MB in the beginning and 887.1MB in the end (delta: 729.8MB). Free memory was 113.7MB in the beginning and 776.4MB in the end (delta: -662.7MB). Peak memory consumption was 67.4MB. Max. memory is 16.1GB. [2022-11-22 01:37:45,473 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:37:45,474 INFO L158 Benchmark]: CACSL2BoogieTranslator took 990.42ms. Allocated memory is still 157.3MB. Free memory was 113.7MB in the beginning and 73.9MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-22 01:37:45,475 INFO L158 Benchmark]: Boogie Procedure Inliner took 202.94ms. Allocated memory is still 157.3MB. Free memory was 73.9MB in the beginning and 50.2MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-22 01:37:45,476 INFO L158 Benchmark]: Boogie Preprocessor took 195.22ms. Allocated memory is still 157.3MB. Free memory was 50.2MB in the beginning and 107.7MB in the end (delta: -57.6MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2022-11-22 01:37:45,482 INFO L158 Benchmark]: RCFGBuilder took 283359.16ms. Allocated memory was 157.3MB in the beginning and 887.1MB in the end (delta: 729.8MB). Free memory was 107.7MB in the beginning and 824.6MB in the end (delta: -716.9MB). Peak memory consumption was 545.7MB. Max. memory is 16.1GB. [2022-11-22 01:37:45,484 INFO L158 Benchmark]: TraceAbstraction took 748.17ms. Allocated memory is still 887.1MB. Free memory was 823.5MB in the beginning and 776.4MB in the end (delta: 47.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2022-11-22 01:37:45,485 INFO L158 Benchmark]: Witness Printer took 6.65ms. Allocated memory is still 887.1MB. Free memory is still 776.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:37:45,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 990.42ms. Allocated memory is still 157.3MB. Free memory was 113.7MB in the beginning and 73.9MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 202.94ms. Allocated memory is still 157.3MB. Free memory was 73.9MB in the beginning and 50.2MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 195.22ms. Allocated memory is still 157.3MB. Free memory was 50.2MB in the beginning and 107.7MB in the end (delta: -57.6MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. * RCFGBuilder took 283359.16ms. Allocated memory was 157.3MB in the beginning and 887.1MB in the end (delta: 729.8MB). Free memory was 107.7MB in the beginning and 824.6MB in the end (delta: -716.9MB). Peak memory consumption was 545.7MB. Max. memory is 16.1GB. * TraceAbstraction took 748.17ms. Allocated memory is still 887.1MB. Free memory was 823.5MB in the beginning and 776.4MB in the end (delta: 47.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Witness Printer took 6.65ms. Allocated memory is still 887.1MB. Free memory is still 776.4MB. 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 235, overapproximation of bitwiseAnd at line 177. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_24 = 0; [L39] const SORT_4 var_67 = 1; [L40] const SORT_4 var_68 = 0; [L41] const SORT_2 var_79 = 1; [L42] const SORT_3 var_81 = 0; [L43] const SORT_4 var_84 = 4; [L44] const SORT_2 var_88 = 0; [L45] const SORT_4 var_155 = 2; [L46] const SORT_2 var_158 = 2; [L47] const SORT_4 var_182 = 3; [L48] const SORT_2 var_185 = 3; [L50] SORT_1 input_80; [L51] SORT_1 input_90; [L52] SORT_1 input_92; [L53] SORT_1 input_99; [L54] SORT_1 input_101; [L55] SORT_1 input_108; [L56] SORT_1 input_110; [L57] SORT_1 input_117; [L58] SORT_1 input_209; [L59] SORT_1 input_213; [L60] SORT_1 input_216; [L61] SORT_1 input_217; [L62] SORT_1 input_218; [L63] SORT_1 input_219; [L64] SORT_1 input_220; [L65] SORT_1 input_221; [L66] SORT_1 input_231; [L67] SORT_1 input_237; [L68] SORT_1 input_243; [L69] SORT_1 input_249; [L70] SORT_1 input_264; [L71] SORT_1 input_282; [L72] SORT_1 input_300; [L73] SORT_1 input_318; [L75] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L79] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L80] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L81] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L82] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L83] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L84] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] SORT_2 init_7_arg_1 = var_5; [L107] state_6 = init_7_arg_1 [L108] SORT_2 init_9_arg_1 = var_5; [L109] state_8 = init_9_arg_1 [L110] SORT_2 init_11_arg_1 = var_5; [L111] state_10 = init_11_arg_1 [L112] SORT_2 init_13_arg_1 = var_5; [L113] state_12 = init_13_arg_1 [L114] SORT_2 init_15_arg_1 = var_5; [L115] state_14 = init_15_arg_1 [L116] SORT_2 init_17_arg_1 = var_5; [L117] state_16 = init_17_arg_1 [L118] SORT_2 init_19_arg_1 = var_5; [L119] state_18 = init_19_arg_1 [L120] SORT_2 init_21_arg_1 = var_5; [L121] state_20 = init_21_arg_1 [L122] SORT_2 init_23_arg_1 = var_5; [L123] state_22 = init_23_arg_1 [L124] SORT_1 init_26_arg_1 = var_24; [L125] state_25 = init_26_arg_1 [L126] SORT_1 init_28_arg_1 = var_24; [L127] state_27 = init_28_arg_1 [L128] SORT_1 init_30_arg_1 = var_24; [L129] state_29 = init_30_arg_1 [L130] SORT_1 init_32_arg_1 = var_24; [L131] state_31 = init_32_arg_1 [L132] SORT_1 init_34_arg_1 = var_24; [L133] state_33 = init_34_arg_1 [L134] SORT_1 init_36_arg_1 = var_24; [L135] state_35 = init_36_arg_1 [L136] SORT_1 init_38_arg_1 = var_24; [L137] state_37 = init_38_arg_1 [L138] SORT_1 init_40_arg_1 = var_24; [L139] state_39 = init_40_arg_1 [L140] SORT_1 init_42_arg_1 = var_24; [L141] state_41 = init_42_arg_1 [L142] SORT_1 init_44_arg_1 = var_24; [L143] state_43 = init_44_arg_1 [L144] SORT_1 init_46_arg_1 = var_24; [L145] state_45 = init_46_arg_1 [L146] SORT_1 init_48_arg_1 = var_24; [L147] state_47 = init_48_arg_1 [L148] SORT_1 init_50_arg_1 = var_24; [L149] state_49 = init_50_arg_1 [L150] SORT_1 init_52_arg_1 = var_24; [L151] state_51 = init_52_arg_1 [L152] SORT_1 init_54_arg_1 = var_24; [L153] state_53 = init_54_arg_1 [L154] SORT_1 init_56_arg_1 = var_24; [L155] state_55 = init_56_arg_1 [L156] SORT_1 init_58_arg_1 = var_24; [L157] state_57 = init_58_arg_1 [L158] SORT_1 init_60_arg_1 = var_24; [L159] state_59 = init_60_arg_1 [L160] SORT_1 init_62_arg_1 = var_24; [L161] state_61 = init_62_arg_1 [L162] SORT_1 init_64_arg_1 = var_24; [L163] state_63 = init_64_arg_1 [L164] SORT_1 init_66_arg_1 = var_24; [L165] state_65 = init_66_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_8=0, var_155=2, var_158=2, var_182=3, var_185=3, var_24=0, var_5=0, var_67=1, var_68=0, var_79=1, var_81=0, var_84=4, var_88=0] [L168] input_80 = __VERIFIER_nondet_uchar() [L169] input_90 = __VERIFIER_nondet_uchar() [L170] input_92 = __VERIFIER_nondet_uchar() [L171] input_99 = __VERIFIER_nondet_uchar() [L172] input_101 = __VERIFIER_nondet_uchar() [L173] input_108 = __VERIFIER_nondet_uchar() [L174] input_110 = __VERIFIER_nondet_uchar() [L175] input_117 = __VERIFIER_nondet_uchar() [L176] input_209 = __VERIFIER_nondet_uchar() [L177] input_209 = input_209 & mask_SORT_1 [L178] input_213 = __VERIFIER_nondet_uchar() [L179] input_213 = input_213 & mask_SORT_1 [L180] input_216 = __VERIFIER_nondet_uchar() [L181] input_216 = input_216 & mask_SORT_1 [L182] input_217 = __VERIFIER_nondet_uchar() [L183] input_217 = input_217 & mask_SORT_1 [L184] input_218 = __VERIFIER_nondet_uchar() [L185] input_218 = input_218 & mask_SORT_1 [L186] input_219 = __VERIFIER_nondet_uchar() [L187] input_219 = input_219 & mask_SORT_1 [L188] input_220 = __VERIFIER_nondet_uchar() [L189] input_220 = input_220 & mask_SORT_1 [L190] input_221 = __VERIFIER_nondet_uchar() [L191] input_221 = input_221 & mask_SORT_1 [L192] input_231 = __VERIFIER_nondet_uchar() [L193] input_231 = input_231 & mask_SORT_1 [L194] input_237 = __VERIFIER_nondet_uchar() [L195] input_237 = input_237 & mask_SORT_1 [L196] input_243 = __VERIFIER_nondet_uchar() [L197] input_243 = input_243 & mask_SORT_1 [L198] input_249 = __VERIFIER_nondet_uchar() [L199] input_249 = input_249 & mask_SORT_1 [L200] input_264 = __VERIFIER_nondet_uchar() [L201] input_282 = __VERIFIER_nondet_uchar() [L202] input_300 = __VERIFIER_nondet_uchar() [L203] input_318 = __VERIFIER_nondet_uchar() [L206] SORT_1 var_69_arg_0 = state_33; [L207] SORT_4 var_69_arg_1 = var_67; [L208] SORT_4 var_69_arg_2 = var_68; [L209] SORT_4 var_69 = var_69_arg_0 ? var_69_arg_1 : var_69_arg_2; [L210] SORT_1 var_70_arg_0 = state_43; [L211] SORT_4 var_70_arg_1 = var_67; [L212] SORT_4 var_70_arg_2 = var_68; [L213] SORT_4 var_70 = var_70_arg_0 ? var_70_arg_1 : var_70_arg_2; [L214] SORT_4 var_71_arg_0 = var_69; [L215] SORT_4 var_71_arg_1 = var_70; [L216] SORT_4 var_71 = var_71_arg_0 + var_71_arg_1; [L217] SORT_1 var_72_arg_0 = state_53; [L218] SORT_4 var_72_arg_1 = var_67; [L219] SORT_4 var_72_arg_2 = var_68; [L220] SORT_4 var_72 = var_72_arg_0 ? var_72_arg_1 : var_72_arg_2; [L221] SORT_4 var_73_arg_0 = var_71; [L222] SORT_4 var_73_arg_1 = var_72; [L223] SORT_4 var_73 = var_73_arg_0 + var_73_arg_1; [L224] SORT_1 var_74_arg_0 = state_63; [L225] SORT_4 var_74_arg_1 = var_67; [L226] SORT_4 var_74_arg_2 = var_68; [L227] SORT_4 var_74 = var_74_arg_0 ? var_74_arg_1 : var_74_arg_2; [L228] SORT_4 var_75_arg_0 = var_73; [L229] SORT_4 var_75_arg_1 = var_74; [L230] SORT_4 var_75 = var_75_arg_0 + var_75_arg_1; [L231] var_75 = var_75 & mask_SORT_4 [L232] SORT_4 var_76_arg_0 = var_75; [L233] SORT_4 var_76_arg_1 = var_67; [L234] SORT_1 var_76 = var_76_arg_0 <= var_76_arg_1; [L235] SORT_1 var_77_arg_0 = ~state_65; [L236] var_77_arg_0 = var_77_arg_0 & mask_SORT_1 [L237] SORT_1 var_77_arg_1 = ~var_76; [L238] var_77_arg_1 = var_77_arg_1 & mask_SORT_1 [L239] SORT_1 var_77 = var_77_arg_0 & var_77_arg_1; [L240] var_77 = var_77 & mask_SORT_1 [L241] SORT_1 bad_78_arg_0 = var_77; [L242] CALL __VERIFIER_assert(!(bad_78_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-22 01:37:45,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba --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 7079b3b743df1a5b92403bcbdc45dcbd5b2b4b373695675f6bb47b5ecc70ce4f --- 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-b5237d8 [2022-11-22 01:37:47,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:37:47,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:37:47,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:37:47,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:37:47,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:37:47,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:37:47,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:37:47,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:37:47,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:37:47,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:37:47,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:37:47,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:37:47,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:37:47,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:37:47,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:37:47,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:37:47,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:37:47,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:37:47,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:37:47,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:37:47,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:37:47,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:37:47,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:37:47,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:37:47,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:37:47,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:37:47,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:37:47,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:37:47,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:37:47,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:37:47,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:37:47,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:37:47,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:37:47,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:37:47,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:37:47,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:37:47,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:37:47,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:37:47,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:37:47,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:37:47,976 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-22 01:37:47,998 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:37:47,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:37:47,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:37:47,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:37:48,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:37:48,000 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:37:48,001 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:37:48,001 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:37:48,001 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:37:48,002 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:37:48,002 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:37:48,002 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:37:48,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:37:48,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:37:48,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:37:48,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:37:48,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:37:48,004 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:37:48,005 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 01:37:48,005 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 01:37:48,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:37:48,005 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:37:48,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:37:48,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:37:48,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 01:37:48,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:37:48,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:37:48,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:37:48,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:37:48,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:37:48,008 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 01:37:48,008 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 01:37:48,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:37:48,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:37:48,009 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 01:37:48,009 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_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7079b3b743df1a5b92403bcbdc45dcbd5b2b4b373695675f6bb47b5ecc70ce4f [2022-11-22 01:37:48,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:37:48,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:37:48,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:37:48,442 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:37:48,443 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:37:48,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c [2022-11-22 01:37:51,549 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:37:51,959 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:37:51,960 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c [2022-11-22 01:37:51,982 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/data/32dc3069c/52ce059a2dd04dd5a29f27de0ef40637/FLAGd82d7adb4 [2022-11-22 01:37:52,011 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/data/32dc3069c/52ce059a2dd04dd5a29f27de0ef40637 [2022-11-22 01:37:52,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:37:52,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:37:52,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:37:52,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:37:52,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:37:52,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:37:52" (1/1) ... [2022-11-22 01:37:52,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c897098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:52, skipping insertion in model container [2022-11-22 01:37:52,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:37:52" (1/1) ... [2022-11-22 01:37:52,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:37:52,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:37:52,298 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_916065b8-05f6-4b28-a6dd-1d46a604c998/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c[1014,1027] [2022-11-22 01:37:52,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:37:52,664 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:37:52,689 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_916065b8-05f6-4b28-a6dd-1d46a604c998/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.4.prop1-func-interl.c[1014,1027] [2022-11-22 01:37:52,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:37:52,917 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:37:52,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:52 WrapperNode [2022-11-22 01:37:52,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:37:52,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:37:52,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:37:52,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:37:52,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:52" (1/1) ... [2022-11-22 01:37:52,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:52" (1/1) ... [2022-11-22 01:37:53,119 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1847 [2022-11-22 01:37:53,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:37:53,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:37:53,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:37:53,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:37:53,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:52" (1/1) ... [2022-11-22 01:37:53,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:52" (1/1) ... [2022-11-22 01:37:53,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:52" (1/1) ... [2022-11-22 01:37:53,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:52" (1/1) ... [2022-11-22 01:37:53,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:52" (1/1) ... [2022-11-22 01:37:53,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:52" (1/1) ... [2022-11-22 01:37:53,239 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:52" (1/1) ... [2022-11-22 01:37:53,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:52" (1/1) ... [2022-11-22 01:37:53,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:37:53,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:37:53,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:37:53,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:37:53,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:52" (1/1) ... [2022-11-22 01:37:53,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:37:53,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:53,307 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:37:53,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:37:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:37:53,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:37:53,890 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:37:53,892 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:37:58,327 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:37:58,335 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:37:58,336 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:37:58,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:58 BoogieIcfgContainer [2022-11-22 01:37:58,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:37:58,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:37:58,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:37:58,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:37:58,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:37:52" (1/3) ... [2022-11-22 01:37:58,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42aaa34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:37:58, skipping insertion in model container [2022-11-22 01:37:58,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:52" (2/3) ... [2022-11-22 01:37:58,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42aaa34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:37:58, skipping insertion in model container [2022-11-22 01:37:58,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:58" (3/3) ... [2022-11-22 01:37:58,350 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.4.prop1-func-interl.c [2022-11-22 01:37:58,371 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:37:58,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:37:58,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:37:58,431 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;@31761873, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:37:58,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:37:58,435 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) [2022-11-22 01:37:58,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:37:58,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:58,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:37:58,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:58,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:58,447 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-22 01:37:58,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:37:58,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30510030] [2022-11-22 01:37:58,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:58,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 01:37:58,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:37:58,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:37:58,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:37:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:58,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-22 01:37:58,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:37:59,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:37:59,413 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:37:59,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30510030] [2022-11-22 01:37:59,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30510030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:59,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:37:59,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:37:59,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748974715] [2022-11-22 01:37:59,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:59,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:37:59,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:37:59,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:37:59,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:37:59,475 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) [2022-11-22 01:38:00,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:00,444 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-22 01:38:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:38:00,447 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 [2022-11-22 01:38:00,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:00,454 INFO L225 Difference]: With dead ends: 20 [2022-11-22 01:38:00,454 INFO L226 Difference]: Without dead ends: 11 [2022-11-22 01:38:00,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:38:00,460 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:00,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 01:38:00,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-22 01:38:00,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-22 01:38:00,494 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) [2022-11-22 01:38:00,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-22 01:38:00,497 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-22 01:38:00,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:00,497 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-22 01:38:00,498 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) [2022-11-22 01:38:00,498 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-22 01:38:00,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:38:00,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:00,499 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:00,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:38:00,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:38:00,713 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:00,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:00,714 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-22 01:38:00,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:38:00,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276800895] [2022-11-22 01:38:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:00,718 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 [2022-11-22 01:38:00,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:38:00,720 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:38:00,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:38:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:03,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 144 conjunts are in the unsatisfiable core [2022-11-22 01:38:03,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:38:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:05,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:38:25,381 WARN L233 SmtUtils]: Spent 15.07s on a formula simplification that was a NOOP. DAG size: 283 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:38:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:26,302 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:38:26,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276800895] [2022-11-22 01:38:26,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276800895] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:38:26,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2073406502] [2022-11-22 01:38:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:26,309 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:38:26,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:38:26,315 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:38:26,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-22 01:38:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:28,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 146 conjunts are in the unsatisfiable core [2022-11-22 01:38:28,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:38:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:38:31,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:38:40,740 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 88 DAG size of output: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:39:30,197 WARN L233 SmtUtils]: Spent 42.39s on a formula simplification that was a NOOP. DAG size: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:39:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:31,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2073406502] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:39:31,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949642470] [2022-11-22 01:39:31,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:31,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:39:31,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:39:31,095 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:39:31,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:39:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:32,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 149 conjunts are in the unsatisfiable core [2022-11-22 01:39:32,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:39:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:34,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:40:48,383 WARN L233 SmtUtils]: Spent 1.13m on a formula simplification. DAG size of input: 90 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:43:00,558 WARN L233 SmtUtils]: Spent 1.98m on a formula simplification. DAG size of input: 313 DAG size of output: 304 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:44:07,988 WARN L233 SmtUtils]: Spent 1.01m on a formula simplification that was a NOOP. DAG size: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:44:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:08,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949642470] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:08,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 01:44:08,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 16 [2022-11-22 01:44:08,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214701497] [2022-11-22 01:44:08,701 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 01:44:08,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 01:44:08,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:44:08,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 01:44:08,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=164, Unknown=11, NotChecked=0, Total=240 [2022-11-22 01:44:08,704 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:13,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-22 01:44:14,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:14,239 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-22 01:44:14,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:44:14,240 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 01:44:14,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:14,242 INFO L225 Difference]: With dead ends: 16 [2022-11-22 01:44:14,243 INFO L226 Difference]: Without dead ends: 14 [2022-11-22 01:44:14,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 350.2s TimeCoverageRelationStatistics Valid=105, Invalid=226, Unknown=11, NotChecked=0, Total=342 [2022-11-22 01:44:14,252 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 24 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:14,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 25 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-22 01:44:14,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-22 01:44:14,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-22 01:44:14,264 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) [2022-11-22 01:44:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-22 01:44:14,265 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-22 01:44:14,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:14,266 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-22 01:44:14,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:14,266 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-22 01:44:14,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:44:14,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:14,267 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-22 01:44:14,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:14,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:44:14,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:14,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 01:44:14,872 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:44:14,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:14,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-22 01:44:14,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:44:14,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301516218] [2022-11-22 01:44:14,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 01:44:14,875 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 [2022-11-22 01:44:14,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:44:14,876 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:44:14,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916065b8-05f6-4b28-a6dd-1d46a604c998/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:44:19,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 01:44:19,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:44:19,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 3111 conjuncts, 241 conjunts are in the unsatisfiable core [2022-11-22 01:44:19,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:26,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:45:38,968 WARN L233 SmtUtils]: Spent 1.18m on a formula simplification. DAG size of input: 93 DAG size of output: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:46:52,221 WARN L233 SmtUtils]: Spent 1.17m on a formula simplification that was a NOOP. DAG size: 280 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)