./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.1.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW --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 b48bd99976d95d3d7781e3907aa9eed49a14d14a98b72da29a590c48eef8f00e --- 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-4e7fbc6 [2022-11-23 13:48:05,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:48:05,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:48:05,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:48:05,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:48:05,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:48:05,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:48:05,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:48:05,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:48:05,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:48:05,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:48:05,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:48:05,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:48:05,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:48:05,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:48:05,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:48:05,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:48:05,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:48:05,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:48:05,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:48:05,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:48:05,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:48:05,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:48:05,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:48:05,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:48:05,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:48:05,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:48:05,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:48:05,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:48:05,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:48:05,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:48:05,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:48:05,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:48:05,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:48:05,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:48:05,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:48:05,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:48:05,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:48:05,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:48:05,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:48:05,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:48:05,406 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 13:48:05,446 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:48:05,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:48:05,447 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:48:05,447 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:48:05,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:48:05,448 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:48:05,449 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:48:05,449 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:48:05,449 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:48:05,449 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:48:05,450 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:48:05,451 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:48:05,451 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:48:05,451 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:48:05,451 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:48:05,451 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:48:05,452 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:48:05,452 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:48:05,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:48:05,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:48:05,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:48:05,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:48:05,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:48:05,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:48:05,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:48:05,454 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:48:05,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:48:05,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:48:05,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:48:05,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:48:05,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:48:05,456 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:48:05,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:48:05,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:48:05,457 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:48:05,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:48:05,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:48:05,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:48:05,458 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_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b48bd99976d95d3d7781e3907aa9eed49a14d14a98b72da29a590c48eef8f00e [2022-11-23 13:48:05,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:48:05,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:48:05,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:48:05,778 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:48:05,778 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:48:05,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.1.prop1-func-interl.c [2022-11-23 13:48:08,795 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:48:09,187 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:48:09,189 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.1.prop1-func-interl.c [2022-11-23 13:48:09,202 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/data/e92ef575d/3926299022534bd99662e078fb0e59cc/FLAG7606cb0e0 [2022-11-23 13:48:09,223 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/data/e92ef575d/3926299022534bd99662e078fb0e59cc [2022-11-23 13:48:09,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:48:09,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:48:09,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:48:09,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:48:09,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:48:09,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:48:09" (1/1) ... [2022-11-23 13:48:09,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f21c2ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:09, skipping insertion in model container [2022-11-23 13:48:09,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:48:09" (1/1) ... [2022-11-23 13:48:09,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:48:09,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:48:09,548 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_8b9c7f82-4035-4ca1-a497-219eed729bad/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.1.prop1-func-interl.c[1014,1027] [2022-11-23 13:48:09,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:48:09,995 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:48:10,010 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_8b9c7f82-4035-4ca1-a497-219eed729bad/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.1.prop1-func-interl.c[1014,1027] [2022-11-23 13:48:10,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:48:10,174 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:48:10,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:10 WrapperNode [2022-11-23 13:48:10,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:48:10,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:48:10,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:48:10,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:48:10,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:10" (1/1) ... [2022-11-23 13:48:10,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:10" (1/1) ... [2022-11-23 13:48:10,355 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1704 [2022-11-23 13:48:10,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:48:10,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:48:10,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:48:10,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:48:10,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:10" (1/1) ... [2022-11-23 13:48:10,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:10" (1/1) ... [2022-11-23 13:48:10,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:10" (1/1) ... [2022-11-23 13:48:10,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:10" (1/1) ... [2022-11-23 13:48:10,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:10" (1/1) ... [2022-11-23 13:48:10,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:10" (1/1) ... [2022-11-23 13:48:10,448 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:10" (1/1) ... [2022-11-23 13:48:10,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:10" (1/1) ... [2022-11-23 13:48:10,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:48:10,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:48:10,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:48:10,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:48:10,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:10" (1/1) ... [2022-11-23 13:48:10,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:48:10,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:48:10,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:48:10,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:48:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:48:10,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:48:11,167 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:48:11,169 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:52:35,331 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:52:35,368 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:52:35,368 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 13:52:35,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:35 BoogieIcfgContainer [2022-11-23 13:52:35,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:52:35,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:52:35,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:52:35,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:52:35,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:48:09" (1/3) ... [2022-11-23 13:52:35,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df9b70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:35, skipping insertion in model container [2022-11-23 13:52:35,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:10" (2/3) ... [2022-11-23 13:52:35,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df9b70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:35, skipping insertion in model container [2022-11-23 13:52:35,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:35" (3/3) ... [2022-11-23 13:52:35,404 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lann.1.prop1-func-interl.c [2022-11-23 13:52:35,427 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:52:35,427 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:52:35,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:52:35,520 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;@4eb1deae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:52:35,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:52:35,527 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) [2022-11-23 13:52:35,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 13:52:35,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:35,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 13:52:35,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:35,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:35,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-23 13:52:35,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:35,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032650257] [2022-11-23 13:52:35,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:35,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:52:35,999 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 13:52:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:52:36,262 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 13:52:36,265 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 13:52:36,266 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 13:52:36,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:52:36,274 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 13:52:36,279 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 13:52:36,317 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 13:52:36,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:52:36 BoogieIcfgContainer [2022-11-23 13:52:36,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 13:52:36,341 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 13:52:36,341 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 13:52:36,342 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 13:52:36,343 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:35" (3/4) ... [2022-11-23 13:52:36,350 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 13:52:36,350 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 13:52:36,353 INFO L158 Benchmark]: Toolchain (without parser) took 267124.98ms. Allocated memory was 186.6MB in the beginning and 830.5MB in the end (delta: 643.8MB). Free memory was 151.9MB in the beginning and 657.7MB in the end (delta: -505.8MB). Peak memory consumption was 139.0MB. Max. memory is 16.1GB. [2022-11-23 13:52:36,353 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 134.2MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:52:36,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 943.11ms. Allocated memory is still 186.6MB. Free memory was 151.9MB in the beginning and 94.4MB in the end (delta: 57.5MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-11-23 13:52:36,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 180.51ms. Allocated memory is still 186.6MB. Free memory was 94.4MB in the beginning and 72.3MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-23 13:52:36,357 INFO L158 Benchmark]: Boogie Preprocessor took 236.22ms. Allocated memory is still 186.6MB. Free memory was 72.3MB in the beginning and 140.5MB in the end (delta: -68.2MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2022-11-23 13:52:36,363 INFO L158 Benchmark]: RCFGBuilder took 264778.19ms. Allocated memory was 186.6MB in the beginning and 830.5MB in the end (delta: 643.8MB). Free memory was 140.5MB in the beginning and 709.1MB in the end (delta: -568.6MB). Peak memory consumption was 515.4MB. Max. memory is 16.1GB. [2022-11-23 13:52:36,365 INFO L158 Benchmark]: TraceAbstraction took 965.73ms. Allocated memory is still 830.5MB. Free memory was 708.0MB in the beginning and 658.7MB in the end (delta: 49.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2022-11-23 13:52:36,366 INFO L158 Benchmark]: Witness Printer took 10.32ms. Allocated memory is still 830.5MB. Free memory was 658.7MB in the beginning and 657.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:52:36,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 134.2MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 943.11ms. Allocated memory is still 186.6MB. Free memory was 151.9MB in the beginning and 94.4MB in the end (delta: 57.5MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 180.51ms. Allocated memory is still 186.6MB. Free memory was 94.4MB in the beginning and 72.3MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 236.22ms. Allocated memory is still 186.6MB. Free memory was 72.3MB in the beginning and 140.5MB in the end (delta: -68.2MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. * RCFGBuilder took 264778.19ms. Allocated memory was 186.6MB in the beginning and 830.5MB in the end (delta: 643.8MB). Free memory was 140.5MB in the beginning and 709.1MB in the end (delta: -568.6MB). Peak memory consumption was 515.4MB. Max. memory is 16.1GB. * TraceAbstraction took 965.73ms. Allocated memory is still 830.5MB. Free memory was 708.0MB in the beginning and 658.7MB in the end (delta: 49.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Witness Printer took 10.32ms. Allocated memory is still 830.5MB. Free memory was 658.7MB in the beginning and 657.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 209, overapproximation of bitwiseAnd at line 160. 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_57 = 1; [L40] const SORT_4 var_58 = 0; [L41] const SORT_2 var_68 = 2; [L42] const SORT_2 var_70 = 1; [L43] const SORT_2 var_72 = 0; [L44] const SORT_2 var_108 = 6; [L45] const SORT_2 var_109 = 255; [L46] const SORT_2 var_118 = 24; [L47] const SORT_2 var_127 = 14; [L48] const SORT_3 var_292 = 0; [L49] const SORT_4 var_294 = 6; [L50] const SORT_4 var_326 = 24; [L51] const SORT_4 var_358 = 14; [L53] SORT_1 input_67; [L54] SORT_1 input_69; [L55] SORT_1 input_71; [L56] SORT_1 input_73; [L57] SORT_1 input_79; [L58] SORT_1 input_82; [L59] SORT_1 input_83; [L60] SORT_1 input_84; [L61] SORT_1 input_85; [L62] SORT_1 input_91; [L63] SORT_1 input_94; [L64] SORT_1 input_95; [L65] SORT_1 input_96; [L66] SORT_1 input_97; [L67] SORT_1 input_103; [L68] SORT_1 input_106; [L69] SORT_1 input_107; [L70] SORT_1 input_116; [L71] SORT_1 input_117; [L72] SORT_1 input_125; [L73] SORT_1 input_126; [L74] SORT_1 input_141; [L75] SORT_1 input_143; [L76] SORT_1 input_162; [L77] SORT_1 input_164; [L78] SORT_1 input_183; [L79] SORT_1 input_185; [L81] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L82] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L83] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L84] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L85] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L86] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L87] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L88] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L89] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L90] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L105] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L107] SORT_2 init_7_arg_1 = var_5; [L108] state_6 = init_7_arg_1 [L109] SORT_2 init_9_arg_1 = var_5; [L110] state_8 = init_9_arg_1 [L111] SORT_2 init_11_arg_1 = var_5; [L112] state_10 = init_11_arg_1 [L113] SORT_2 init_13_arg_1 = var_5; [L114] state_12 = init_13_arg_1 [L115] SORT_2 init_15_arg_1 = var_5; [L116] state_14 = init_15_arg_1 [L117] SORT_2 init_17_arg_1 = var_5; [L118] state_16 = init_17_arg_1 [L119] SORT_2 init_19_arg_1 = var_5; [L120] state_18 = init_19_arg_1 [L121] SORT_2 init_21_arg_1 = var_5; [L122] state_20 = init_21_arg_1 [L123] SORT_2 init_23_arg_1 = var_5; [L124] state_22 = init_23_arg_1 [L125] SORT_1 init_26_arg_1 = var_24; [L126] state_25 = init_26_arg_1 [L127] SORT_1 init_28_arg_1 = var_24; [L128] state_27 = init_28_arg_1 [L129] SORT_1 init_30_arg_1 = var_24; [L130] state_29 = init_30_arg_1 [L131] SORT_1 init_32_arg_1 = var_24; [L132] state_31 = init_32_arg_1 [L133] SORT_1 init_34_arg_1 = var_24; [L134] state_33 = init_34_arg_1 [L135] SORT_1 init_36_arg_1 = var_24; [L136] state_35 = init_36_arg_1 [L137] SORT_1 init_38_arg_1 = var_24; [L138] state_37 = init_38_arg_1 [L139] SORT_1 init_40_arg_1 = var_24; [L140] state_39 = init_40_arg_1 [L141] SORT_1 init_42_arg_1 = var_24; [L142] state_41 = init_42_arg_1 [L143] SORT_1 init_44_arg_1 = var_24; [L144] state_43 = init_44_arg_1 [L145] SORT_1 init_46_arg_1 = var_24; [L146] state_45 = init_46_arg_1 [L147] SORT_1 init_48_arg_1 = var_24; [L148] state_47 = init_48_arg_1 [L149] SORT_1 init_50_arg_1 = var_24; [L150] state_49 = init_50_arg_1 [L151] SORT_1 init_52_arg_1 = var_24; [L152] state_51 = init_52_arg_1 [L153] SORT_1 init_54_arg_1 = var_24; [L154] state_53 = init_54_arg_1 [L155] SORT_1 init_56_arg_1 = var_24; [L156] state_55 = init_56_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_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_6=0, state_8=0, var_108=6, var_109=255, var_118=24, var_127=14, var_24=0, var_292=0, var_294=6, var_326=24, var_358=14, var_5=0, var_57=1, var_58=0, var_68=2, var_70=1, var_72=0] [L159] input_67 = __VERIFIER_nondet_uchar() [L160] input_67 = input_67 & mask_SORT_1 [L161] input_69 = __VERIFIER_nondet_uchar() [L162] input_69 = input_69 & mask_SORT_1 [L163] input_71 = __VERIFIER_nondet_uchar() [L164] input_71 = input_71 & mask_SORT_1 [L165] input_73 = __VERIFIER_nondet_uchar() [L166] input_73 = input_73 & mask_SORT_1 [L167] input_79 = __VERIFIER_nondet_uchar() [L168] input_79 = input_79 & mask_SORT_1 [L169] input_82 = __VERIFIER_nondet_uchar() [L170] input_82 = input_82 & mask_SORT_1 [L171] input_83 = __VERIFIER_nondet_uchar() [L172] input_83 = input_83 & mask_SORT_1 [L173] input_84 = __VERIFIER_nondet_uchar() [L174] input_84 = input_84 & mask_SORT_1 [L175] input_85 = __VERIFIER_nondet_uchar() [L176] input_85 = input_85 & mask_SORT_1 [L177] input_91 = __VERIFIER_nondet_uchar() [L178] input_91 = input_91 & mask_SORT_1 [L179] input_94 = __VERIFIER_nondet_uchar() [L180] input_94 = input_94 & mask_SORT_1 [L181] input_95 = __VERIFIER_nondet_uchar() [L182] input_95 = input_95 & mask_SORT_1 [L183] input_96 = __VERIFIER_nondet_uchar() [L184] input_96 = input_96 & mask_SORT_1 [L185] input_97 = __VERIFIER_nondet_uchar() [L186] input_97 = input_97 & mask_SORT_1 [L187] input_103 = __VERIFIER_nondet_uchar() [L188] input_103 = input_103 & mask_SORT_1 [L189] input_106 = __VERIFIER_nondet_uchar() [L190] input_106 = input_106 & mask_SORT_1 [L191] input_107 = __VERIFIER_nondet_uchar() [L192] input_107 = input_107 & mask_SORT_1 [L193] input_116 = __VERIFIER_nondet_uchar() [L194] input_116 = input_116 & mask_SORT_1 [L195] input_117 = __VERIFIER_nondet_uchar() [L196] input_117 = input_117 & mask_SORT_1 [L197] input_125 = __VERIFIER_nondet_uchar() [L198] input_125 = input_125 & mask_SORT_1 [L199] input_126 = __VERIFIER_nondet_uchar() [L200] input_126 = input_126 & mask_SORT_1 [L201] input_141 = __VERIFIER_nondet_uchar() [L202] input_143 = __VERIFIER_nondet_uchar() [L203] input_162 = __VERIFIER_nondet_uchar() [L204] input_164 = __VERIFIER_nondet_uchar() [L205] input_183 = __VERIFIER_nondet_uchar() [L206] input_185 = __VERIFIER_nondet_uchar() [L209] SORT_1 var_59_arg_0 = ~state_27; [L210] var_59_arg_0 = var_59_arg_0 & mask_SORT_1 [L211] SORT_4 var_59_arg_1 = var_57; [L212] SORT_4 var_59_arg_2 = var_58; [L213] SORT_4 var_59 = var_59_arg_0 ? var_59_arg_1 : var_59_arg_2; [L214] SORT_1 var_60_arg_0 = state_33; [L215] SORT_4 var_60_arg_1 = var_57; [L216] SORT_4 var_60_arg_2 = var_58; [L217] SORT_4 var_60 = var_60_arg_0 ? var_60_arg_1 : var_60_arg_2; [L218] SORT_4 var_61_arg_0 = var_59; [L219] SORT_4 var_61_arg_1 = var_60; [L220] SORT_4 var_61 = var_61_arg_0 + var_61_arg_1; [L221] SORT_1 var_62_arg_0 = state_39; [L222] SORT_4 var_62_arg_1 = var_57; [L223] SORT_4 var_62_arg_2 = var_58; [L224] SORT_4 var_62 = var_62_arg_0 ? var_62_arg_1 : var_62_arg_2; [L225] SORT_4 var_63_arg_0 = var_61; [L226] SORT_4 var_63_arg_1 = var_62; [L227] SORT_4 var_63 = var_63_arg_0 + var_63_arg_1; [L228] var_63 = var_63 & mask_SORT_4 [L229] SORT_4 var_64_arg_0 = var_63; [L230] SORT_4 var_64_arg_1 = var_57; [L231] SORT_1 var_64 = var_64_arg_0 <= var_64_arg_1; [L232] SORT_1 var_65_arg_0 = ~state_55; [L233] var_65_arg_0 = var_65_arg_0 & mask_SORT_1 [L234] SORT_1 var_65_arg_1 = ~var_64; [L235] var_65_arg_1 = var_65_arg_1 & mask_SORT_1 [L236] SORT_1 var_65 = var_65_arg_0 & var_65_arg_1; [L237] var_65 = var_65 & mask_SORT_1 [L238] SORT_1 bad_66_arg_0 = var_65; [L239] CALL __VERIFIER_assert(!(bad_66_arg_0)) [L20] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L20] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 13:52:36,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW --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 b48bd99976d95d3d7781e3907aa9eed49a14d14a98b72da29a590c48eef8f00e --- 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-4e7fbc6 [2022-11-23 13:52:38,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:52:38,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:52:39,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:52:39,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:52:39,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:52:39,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:52:39,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:52:39,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:52:39,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:52:39,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:52:39,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:52:39,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:52:39,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:52:39,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:52:39,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:52:39,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:52:39,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:52:39,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:52:39,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:52:39,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:52:39,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:52:39,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:52:39,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:52:39,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:52:39,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:52:39,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:52:39,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:52:39,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:52:39,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:52:39,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:52:39,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:52:39,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:52:39,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:52:39,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:52:39,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:52:39,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:52:39,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:52:39,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:52:39,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:52:39,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:52:39,051 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-23 13:52:39,080 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:52:39,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:52:39,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:52:39,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:52:39,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:52:39,088 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:52:39,088 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:52:39,088 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:52:39,089 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:52:39,089 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:52:39,089 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:52:39,090 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:52:39,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:52:39,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:52:39,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:52:39,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:52:39,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:52:39,096 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 13:52:39,096 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 13:52:39,096 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 13:52:39,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:52:39,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:52:39,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:52:39,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:52:39,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 13:52:39,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:52:39,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:52:39,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:52:39,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:52:39,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:52:39,101 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 13:52:39,101 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 13:52:39,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:52:39,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:52:39,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 13:52:39,102 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_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b48bd99976d95d3d7781e3907aa9eed49a14d14a98b72da29a590c48eef8f00e [2022-11-23 13:52:39,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:52:39,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:52:39,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:52:39,498 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:52:39,499 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:52:39,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.1.prop1-func-interl.c [2022-11-23 13:52:42,783 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:52:43,196 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:52:43,196 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.1.prop1-func-interl.c [2022-11-23 13:52:43,213 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/data/63351d1e2/15e44deb591747fa9b9e4a439a5189da/FLAGc1291593d [2022-11-23 13:52:43,231 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/data/63351d1e2/15e44deb591747fa9b9e4a439a5189da [2022-11-23 13:52:43,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:52:43,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:52:43,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:52:43,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:52:43,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:52:43,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:43" (1/1) ... [2022-11-23 13:52:43,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a59c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:43, skipping insertion in model container [2022-11-23 13:52:43,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:43" (1/1) ... [2022-11-23 13:52:43,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:52:43,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:52:43,565 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_8b9c7f82-4035-4ca1-a497-219eed729bad/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.1.prop1-func-interl.c[1014,1027] [2022-11-23 13:52:43,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:52:43,971 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:52:44,006 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_8b9c7f82-4035-4ca1-a497-219eed729bad/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.1.prop1-func-interl.c[1014,1027] [2022-11-23 13:52:44,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:52:44,214 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:52:44,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:44 WrapperNode [2022-11-23 13:52:44,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:52:44,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:52:44,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:52:44,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:52:44,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:44" (1/1) ... [2022-11-23 13:52:44,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:44" (1/1) ... [2022-11-23 13:52:44,405 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1704 [2022-11-23 13:52:44,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:52:44,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:52:44,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:52:44,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:52:44,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:44" (1/1) ... [2022-11-23 13:52:44,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:44" (1/1) ... [2022-11-23 13:52:44,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:44" (1/1) ... [2022-11-23 13:52:44,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:44" (1/1) ... [2022-11-23 13:52:44,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:44" (1/1) ... [2022-11-23 13:52:44,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:44" (1/1) ... [2022-11-23 13:52:44,521 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:44" (1/1) ... [2022-11-23 13:52:44,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:44" (1/1) ... [2022-11-23 13:52:44,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:52:44,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:52:44,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:52:44,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:52:44,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:44" (1/1) ... [2022-11-23 13:52:44,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:52:44,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:52:44,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:52:44,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:52:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:52:44,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:52:45,165 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:52:45,168 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:52:48,284 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:52:48,295 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:52:48,295 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 13:52:48,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:48 BoogieIcfgContainer [2022-11-23 13:52:48,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:52:48,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:52:48,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:52:48,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:52:48,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:52:43" (1/3) ... [2022-11-23 13:52:48,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b239e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:48, skipping insertion in model container [2022-11-23 13:52:48,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:44" (2/3) ... [2022-11-23 13:52:48,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b239e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:48, skipping insertion in model container [2022-11-23 13:52:48,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:48" (3/3) ... [2022-11-23 13:52:48,321 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lann.1.prop1-func-interl.c [2022-11-23 13:52:48,344 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:52:48,344 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:52:48,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:52:48,424 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@577d40e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:52:48,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:52:48,429 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) [2022-11-23 13:52:48,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 13:52:48,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:48,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 13:52:48,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:48,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:48,447 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-23 13:52:48,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:52:48,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099307586] [2022-11-23 13:52:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:48,467 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 [2022-11-23 13:52:48,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:52:48,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 13:52:48,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 13:52:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:48,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-23 13:52:48,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:52:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:52:49,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:52:49,240 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:52:49,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099307586] [2022-11-23 13:52:49,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099307586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:52:49,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:52:49,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:52:49,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244995300] [2022-11-23 13:52:49,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:49,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:52:49,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:52:49,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:52:49,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:52:49,287 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) [2022-11-23 13:52:49,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:49,567 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-23 13:52:49,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:52:49,571 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 [2022-11-23 13:52:49,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:49,580 INFO L225 Difference]: With dead ends: 20 [2022-11-23 13:52:49,580 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 13:52:49,584 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 [2022-11-23 13:52:49,591 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:49,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:52:49,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 13:52:49,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-23 13:52:49,628 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) [2022-11-23 13:52:49,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 13:52:49,632 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 13:52:49,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:49,632 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 13:52:49,632 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) [2022-11-23 13:52:49,633 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 13:52:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 13:52:49,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:49,633 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:49,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/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)] Ended with exit code 0 [2022-11-23 13:52:49,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 13:52:49,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:49,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:49,859 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-23 13:52:49,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:52:49,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330459313] [2022-11-23 13:52:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:49,862 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 [2022-11-23 13:52:49,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:52:49,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 13:52:49,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 13:52:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:50,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 139 conjunts are in the unsatisfiable core [2022-11-23 13:52:50,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:52:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:52:55,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:53:42,030 WARN L233 SmtUtils]: Spent 45.98s on a formula simplification that was a NOOP. DAG size: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:41,645 WARN L233 SmtUtils]: Spent 55.46s on a formula simplification that was a NOOP. DAG size: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:54:43,579 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:54:43,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330459313] [2022-11-23 13:54:43,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330459313] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:54:43,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1839301835] [2022-11-23 13:54:43,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:54:43,581 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 13:54:43,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 13:54:43,617 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 13:54:43,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-23 13:54:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:54:45,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 138 conjunts are in the unsatisfiable core [2022-11-23 13:54:45,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:54:49,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:54:49,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:56:08,477 WARN L233 SmtUtils]: Spent 1.27m on a formula simplification. DAG size of input: 100 DAG size of output: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:57:07,375 WARN L233 SmtUtils]: Spent 49.09s on a formula simplification that was a NOOP. DAG size: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:57:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:08,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1839301835] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:57:08,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266536376] [2022-11-23 13:57:08,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:57:08,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:57:08,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:57:08,991 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:57:09,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 13:57:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:57:09,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 141 conjunts are in the unsatisfiable core [2022-11-23 13:57:09,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:57:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:57:11,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:58:44,475 WARN L233 SmtUtils]: Spent 1.46m on a formula simplification. DAG size of input: 114 DAG size of output: 84 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:01,166 WARN L233 SmtUtils]: Spent 1.05m on a formula simplification that was a NOOP. DAG size: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:01:07,794 WARN L233 SmtUtils]: Spent 58.79s on a formula simplification that was a NOOP. DAG size: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:01:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:01:08,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266536376] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:01:08,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:01:08,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 16 [2022-11-23 14:01:08,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900588287] [2022-11-23 14:01:08,546 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:01:08,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 14:01:08,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:01:08,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 14:01:08,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=176, Unknown=11, NotChecked=0, Total=240 [2022-11-23 14:01:08,548 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) [2022-11-23 14:01:19,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:01:19,500 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-23 14:01:19,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:01:19,501 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 [2022-11-23 14:01:19,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:01:19,501 INFO L225 Difference]: With dead ends: 16 [2022-11-23 14:01:19,501 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 14:01:19,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 489.9s TimeCoverageRelationStatistics Valid=93, Invalid=238, Unknown=11, NotChecked=0, Total=342 [2022-11-23 14:01:19,503 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:01:19,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 25 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 14:01:19,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 14:01:19,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-23 14:01:19,509 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) [2022-11-23 14:01:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-23 14:01:19,510 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-23 14:01:19,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:01:19,510 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-23 14:01:19,510 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) [2022-11-23 14:01:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-23 14:01:19,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:01:19,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:01:19,511 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 14:01:19,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-23 14:01:19,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:01:19,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:01:20,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/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_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:01:20,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:01:20,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:01:20,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-23 14:01:20,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:01:20,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466670102] [2022-11-23 14:01:20,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:01:20,121 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 [2022-11-23 14:01:20,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:01:20,122 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:01:20,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b9c7f82-4035-4ca1-a497-219eed729bad/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:01:21,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:01:21,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:01:21,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 2784 conjuncts, 293 conjunts are in the unsatisfiable core [2022-11-23 14:01:21,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:01:39,290 WARN L233 SmtUtils]: Spent 16.76s on a formula simplification. DAG size of input: 290 DAG size of output: 279 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:01:54,330 WARN L233 SmtUtils]: Spent 10.40s on a formula simplification that was a NOOP. DAG size: 688 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:01:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:01:57,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:02:41,622 WARN L233 SmtUtils]: Spent 42.34s on a formula simplification. DAG size of input: 82 DAG size of output: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)