./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 14f81a0d6a388b613f6256ef89322a578d67b2b4527606e37681918ec5903dd9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 22:34:43,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:34:43,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:34:43,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:34:43,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:34:43,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:34:43,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:34:43,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:34:43,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:34:43,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:34:43,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:34:43,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:34:43,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:34:43,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:34:43,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:34:43,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:34:43,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:34:43,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:34:43,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:34:43,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:34:43,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:34:43,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:34:43,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:34:43,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:34:43,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:34:43,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:34:43,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:34:43,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:34:43,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:34:43,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:34:43,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:34:43,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:34:43,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:34:43,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:34:43,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:34:43,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:34:43,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:34:43,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:34:43,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:34:43,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:34:43,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:34:43,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 22:34:43,594 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:34:43,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:34:43,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:34:43,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:34:43,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:34:43,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:34:43,597 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:34:43,597 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:34:43,597 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:34:43,597 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:34:43,598 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:34:43,599 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:34:43,599 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:34:43,599 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:34:43,599 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:34:43,599 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:34:43,600 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:34:43,600 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:34:43,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:34:43,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:34:43,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:34:43,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:34:43,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:34:43,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:34:43,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:34:43,602 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:34:43,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:34:43,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:34:43,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:34:43,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:34:43,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:34:43,604 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:34:43,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:34:43,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:34:43,604 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:34:43,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:34:43,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:34:43,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:34:43,605 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_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14f81a0d6a388b613f6256ef89322a578d67b2b4527606e37681918ec5903dd9 [2022-11-25 22:34:44,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:34:44,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:34:44,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:34:44,070 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:34:44,071 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:34:44,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-11-25 22:34:47,294 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:34:47,689 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:34:47,690 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-11-25 22:34:47,709 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/data/cb03ba210/e97f6e176a7840c097432078c9483e69/FLAG63d44c042 [2022-11-25 22:34:47,732 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/data/cb03ba210/e97f6e176a7840c097432078c9483e69 [2022-11-25 22:34:47,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:34:47,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:34:47,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:34:47,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:34:47,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:34:47,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:34:47" (1/1) ... [2022-11-25 22:34:47,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eb34363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:47, skipping insertion in model container [2022-11-25 22:34:47,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:34:47" (1/1) ... [2022-11-25 22:34:47,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:34:47,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:34:48,090 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_32f84b65-7846-4f39-aa2e-3804a851510b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c[1014,1027] [2022-11-25 22:34:48,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:34:48,481 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:34:48,494 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_32f84b65-7846-4f39-aa2e-3804a851510b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c[1014,1027] [2022-11-25 22:34:48,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:34:48,757 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:34:48,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:48 WrapperNode [2022-11-25 22:34:48,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:34:48,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:34:48,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:34:48,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:34:48,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:48" (1/1) ... [2022-11-25 22:34:48,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:48" (1/1) ... [2022-11-25 22:34:48,987 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1323 [2022-11-25 22:34:48,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:34:48,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:34:48,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:34:48,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:34:48,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:48" (1/1) ... [2022-11-25 22:34:49,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:48" (1/1) ... [2022-11-25 22:34:49,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:48" (1/1) ... [2022-11-25 22:34:49,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:48" (1/1) ... [2022-11-25 22:34:49,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:48" (1/1) ... [2022-11-25 22:34:49,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:48" (1/1) ... [2022-11-25 22:34:49,104 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:48" (1/1) ... [2022-11-25 22:34:49,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:48" (1/1) ... [2022-11-25 22:34:49,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:34:49,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:34:49,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:34:49,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:34:49,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:48" (1/1) ... [2022-11-25 22:34:49,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:34:49,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:34:49,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:34:49,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:34:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:34:49,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:34:49,791 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:34:49,793 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:37:00,655 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:37:00,705 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:37:00,705 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 22:37:00,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:37:00 BoogieIcfgContainer [2022-11-25 22:37:00,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:37:00,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:37:00,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:37:00,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:37:00,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:34:47" (1/3) ... [2022-11-25 22:37:00,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5422417b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:37:00, skipping insertion in model container [2022-11-25 22:37:00,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:34:48" (2/3) ... [2022-11-25 22:37:00,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5422417b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:37:00, skipping insertion in model container [2022-11-25 22:37:00,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:37:00" (3/3) ... [2022-11-25 22:37:00,727 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-11-25 22:37:00,751 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:37:00,752 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:37:00,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:37:00,833 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;@2a0e0e74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:37:00,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:37:00,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:37:00,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 22:37:00,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:37:00,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 22:37:00,848 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:37:00,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:37:00,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-25 22:37:00,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:37:00,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894254834] [2022-11-25 22:37:00,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:37:00,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:37:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:37:01,260 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 22:37:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:37:01,499 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 22:37:01,502 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 22:37:01,504 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 22:37:01,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:37:01,513 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 22:37:01,519 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:37:01,565 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-25 22:37:01,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:37:01 BoogieIcfgContainer [2022-11-25 22:37:01,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:37:01,587 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:37:01,587 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:37:01,588 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:37:01,589 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:37:00" (3/4) ... [2022-11-25 22:37:01,593 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 22:37:01,593 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:37:01,596 INFO L158 Benchmark]: Toolchain (without parser) took 133858.70ms. Allocated memory was 178.3MB in the beginning and 740.3MB in the end (delta: 562.0MB). Free memory was 148.1MB in the beginning and 502.7MB in the end (delta: -354.6MB). Peak memory consumption was 207.2MB. Max. memory is 16.1GB. [2022-11-25 22:37:01,596 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 125.8MB. Free memory is still 97.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:37:01,597 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1014.60ms. Allocated memory is still 178.3MB. Free memory was 148.1MB in the beginning and 114.5MB in the end (delta: 33.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-25 22:37:01,599 INFO L158 Benchmark]: Boogie Procedure Inliner took 229.29ms. Allocated memory is still 178.3MB. Free memory was 114.5MB in the beginning and 96.9MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 22:37:01,600 INFO L158 Benchmark]: Boogie Preprocessor took 157.20ms. Allocated memory is still 178.3MB. Free memory was 96.9MB in the beginning and 88.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 22:37:01,606 INFO L158 Benchmark]: RCFGBuilder took 131563.11ms. Allocated memory was 178.3MB in the beginning and 740.3MB in the end (delta: 562.0MB). Free memory was 88.5MB in the beginning and 544.7MB in the end (delta: -456.2MB). Peak memory consumption was 407.7MB. Max. memory is 16.1GB. [2022-11-25 22:37:01,608 INFO L158 Benchmark]: TraceAbstraction took 871.33ms. Allocated memory is still 740.3MB. Free memory was 543.6MB in the beginning and 502.7MB in the end (delta: 40.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-25 22:37:01,609 INFO L158 Benchmark]: Witness Printer took 7.38ms. Allocated memory is still 740.3MB. Free memory was 502.7MB in the beginning and 502.7MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:37:01,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 125.8MB. Free memory is still 97.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1014.60ms. Allocated memory is still 178.3MB. Free memory was 148.1MB in the beginning and 114.5MB in the end (delta: 33.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 229.29ms. Allocated memory is still 178.3MB. Free memory was 114.5MB in the beginning and 96.9MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 157.20ms. Allocated memory is still 178.3MB. Free memory was 96.9MB in the beginning and 88.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 131563.11ms. Allocated memory was 178.3MB in the beginning and 740.3MB in the end (delta: 562.0MB). Free memory was 88.5MB in the beginning and 544.7MB in the end (delta: -456.2MB). Peak memory consumption was 407.7MB. Max. memory is 16.1GB. * TraceAbstraction took 871.33ms. Allocated memory is still 740.3MB. Free memory was 543.6MB in the beginning and 502.7MB in the end (delta: 40.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Witness Printer took 7.38ms. Allocated memory is still 740.3MB. Free memory was 502.7MB in the beginning and 502.7MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 190, overapproximation of bitwiseAnd at line 146. 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_20 = 0; [L39] const SORT_4 var_53 = 1; [L40] const SORT_4 var_54 = 0; [L41] const SORT_2 var_63 = 1; [L42] const SORT_3 var_65 = 0; [L43] const SORT_4 var_68 = 3; [L44] const SORT_2 var_72 = 0; [L45] const SORT_4 var_122 = 2; [L46] const SORT_2 var_125 = 2; [L48] SORT_1 input_64; [L49] SORT_1 input_74; [L50] SORT_1 input_76; [L51] SORT_1 input_83; [L52] SORT_1 input_85; [L53] SORT_1 input_92; [L54] SORT_1 input_143; [L55] SORT_1 input_147; [L56] SORT_1 input_150; [L57] SORT_1 input_151; [L58] SORT_1 input_152; [L59] SORT_1 input_153; [L60] SORT_1 input_161; [L61] SORT_1 input_167; [L62] SORT_1 input_173; [L63] SORT_1 input_188; [L64] SORT_1 input_206; [L65] SORT_1 input_224; [L67] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L68] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_2 init_7_arg_1 = var_5; [L92] state_6 = init_7_arg_1 [L93] SORT_2 init_9_arg_1 = var_5; [L94] state_8 = init_9_arg_1 [L95] SORT_2 init_11_arg_1 = var_5; [L96] state_10 = init_11_arg_1 [L97] SORT_2 init_13_arg_1 = var_5; [L98] state_12 = init_13_arg_1 [L99] SORT_2 init_15_arg_1 = var_5; [L100] state_14 = init_15_arg_1 [L101] SORT_2 init_17_arg_1 = var_5; [L102] state_16 = init_17_arg_1 [L103] SORT_2 init_19_arg_1 = var_5; [L104] state_18 = init_19_arg_1 [L105] SORT_1 init_22_arg_1 = var_20; [L106] state_21 = init_22_arg_1 [L107] SORT_1 init_24_arg_1 = var_20; [L108] state_23 = init_24_arg_1 [L109] SORT_1 init_26_arg_1 = var_20; [L110] state_25 = init_26_arg_1 [L111] SORT_1 init_28_arg_1 = var_20; [L112] state_27 = init_28_arg_1 [L113] SORT_1 init_30_arg_1 = var_20; [L114] state_29 = init_30_arg_1 [L115] SORT_1 init_32_arg_1 = var_20; [L116] state_31 = init_32_arg_1 [L117] SORT_1 init_34_arg_1 = var_20; [L118] state_33 = init_34_arg_1 [L119] SORT_1 init_36_arg_1 = var_20; [L120] state_35 = init_36_arg_1 [L121] SORT_1 init_38_arg_1 = var_20; [L122] state_37 = init_38_arg_1 [L123] SORT_1 init_40_arg_1 = var_20; [L124] state_39 = init_40_arg_1 [L125] SORT_1 init_42_arg_1 = var_20; [L126] state_41 = init_42_arg_1 [L127] SORT_1 init_44_arg_1 = var_20; [L128] state_43 = init_44_arg_1 [L129] SORT_1 init_46_arg_1 = var_20; [L130] state_45 = init_46_arg_1 [L131] SORT_1 init_48_arg_1 = var_20; [L132] state_47 = init_48_arg_1 [L133] SORT_1 init_50_arg_1 = var_20; [L134] state_49 = init_50_arg_1 [L135] SORT_1 init_52_arg_1 = var_20; [L136] state_51 = init_52_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_22_arg_1=0, init_24_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_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_21=0, state_23=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_6=0, state_8=0, var_122=2, var_125=2, var_20=0, var_5=0, var_53=1, var_54=0, var_63=1, var_65=0, var_68=3, var_72=0] [L139] input_64 = __VERIFIER_nondet_uchar() [L140] input_74 = __VERIFIER_nondet_uchar() [L141] input_76 = __VERIFIER_nondet_uchar() [L142] input_83 = __VERIFIER_nondet_uchar() [L143] input_85 = __VERIFIER_nondet_uchar() [L144] input_92 = __VERIFIER_nondet_uchar() [L145] input_143 = __VERIFIER_nondet_uchar() [L146] input_143 = input_143 & mask_SORT_1 [L147] input_147 = __VERIFIER_nondet_uchar() [L148] input_147 = input_147 & mask_SORT_1 [L149] input_150 = __VERIFIER_nondet_uchar() [L150] input_150 = input_150 & mask_SORT_1 [L151] input_151 = __VERIFIER_nondet_uchar() [L152] input_151 = input_151 & mask_SORT_1 [L153] input_152 = __VERIFIER_nondet_uchar() [L154] input_152 = input_152 & mask_SORT_1 [L155] input_153 = __VERIFIER_nondet_uchar() [L156] input_153 = input_153 & mask_SORT_1 [L157] input_161 = __VERIFIER_nondet_uchar() [L158] input_161 = input_161 & mask_SORT_1 [L159] input_167 = __VERIFIER_nondet_uchar() [L160] input_167 = input_167 & mask_SORT_1 [L161] input_173 = __VERIFIER_nondet_uchar() [L162] input_173 = input_173 & mask_SORT_1 [L163] input_188 = __VERIFIER_nondet_uchar() [L164] input_206 = __VERIFIER_nondet_uchar() [L165] input_224 = __VERIFIER_nondet_uchar() [L168] SORT_1 var_55_arg_0 = state_29; [L169] SORT_4 var_55_arg_1 = var_53; [L170] SORT_4 var_55_arg_2 = var_54; [L171] SORT_4 var_55 = var_55_arg_0 ? var_55_arg_1 : var_55_arg_2; [L172] SORT_1 var_56_arg_0 = state_39; [L173] SORT_4 var_56_arg_1 = var_53; [L174] SORT_4 var_56_arg_2 = var_54; [L175] SORT_4 var_56 = var_56_arg_0 ? var_56_arg_1 : var_56_arg_2; [L176] SORT_4 var_57_arg_0 = var_55; [L177] SORT_4 var_57_arg_1 = var_56; [L178] SORT_4 var_57 = var_57_arg_0 + var_57_arg_1; [L179] SORT_1 var_58_arg_0 = state_49; [L180] SORT_4 var_58_arg_1 = var_53; [L181] SORT_4 var_58_arg_2 = var_54; [L182] SORT_4 var_58 = var_58_arg_0 ? var_58_arg_1 : var_58_arg_2; [L183] SORT_4 var_59_arg_0 = var_57; [L184] SORT_4 var_59_arg_1 = var_58; [L185] SORT_4 var_59 = var_59_arg_0 + var_59_arg_1; [L186] var_59 = var_59 & mask_SORT_4 [L187] SORT_4 var_60_arg_0 = var_59; [L188] SORT_4 var_60_arg_1 = var_53; [L189] SORT_1 var_60 = var_60_arg_0 <= var_60_arg_1; [L190] SORT_1 var_61_arg_0 = ~state_51; [L191] var_61_arg_0 = var_61_arg_0 & mask_SORT_1 [L192] SORT_1 var_61_arg_1 = ~var_60; [L193] var_61_arg_1 = var_61_arg_1 & mask_SORT_1 [L194] SORT_1 var_61 = var_61_arg_0 & var_61_arg_1; [L195] var_61 = var_61 & mask_SORT_1 [L196] SORT_1 bad_62_arg_0 = var_61; [L197] CALL __VERIFIER_assert(!(bad_62_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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 [2022-11-25 22:37:01,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 14f81a0d6a388b613f6256ef89322a578d67b2b4527606e37681918ec5903dd9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 22:37:04,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:37:04,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:37:04,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:37:04,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:37:04,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:37:04,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:37:04,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:37:04,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:37:04,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:37:04,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:37:04,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:37:04,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:37:04,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:37:04,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:37:04,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:37:04,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:37:04,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:37:04,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:37:04,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:37:04,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:37:04,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:37:04,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:37:04,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:37:04,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:37:04,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:37:04,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:37:04,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:37:04,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:37:04,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:37:04,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:37:04,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:37:04,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:37:04,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:37:04,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:37:04,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:37:04,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:37:04,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:37:04,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:37:04,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:37:04,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:37:04,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-25 22:37:04,869 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:37:04,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:37:04,871 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:37:04,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:37:04,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:37:04,874 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:37:04,874 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:37:04,874 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:37:04,875 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:37:04,875 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:37:04,877 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:37:04,877 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:37:04,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:37:04,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:37:04,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:37:04,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:37:04,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:37:04,880 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 22:37:04,881 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 22:37:04,881 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 22:37:04,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:37:04,882 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:37:04,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:37:04,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:37:04,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 22:37:04,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:37:04,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:37:04,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:37:04,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:37:04,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:37:04,885 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 22:37:04,886 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 22:37:04,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:37:04,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:37:04,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 22:37:04,888 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_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14f81a0d6a388b613f6256ef89322a578d67b2b4527606e37681918ec5903dd9 [2022-11-25 22:37:05,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:37:05,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:37:05,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:37:05,423 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:37:05,423 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:37:05,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-11-25 22:37:08,818 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:37:09,302 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:37:09,302 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-11-25 22:37:09,326 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/data/7d26391a7/311ec1ce309e434b8367083ffb57bc03/FLAG0fb51fd5b [2022-11-25 22:37:09,350 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/data/7d26391a7/311ec1ce309e434b8367083ffb57bc03 [2022-11-25 22:37:09,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:37:09,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:37:09,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:37:09,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:37:09,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:37:09,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:37:09" (1/1) ... [2022-11-25 22:37:09,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f659fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:37:09, skipping insertion in model container [2022-11-25 22:37:09,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:37:09" (1/1) ... [2022-11-25 22:37:09,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:37:09,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:37:09,735 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_32f84b65-7846-4f39-aa2e-3804a851510b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c[1014,1027] [2022-11-25 22:37:10,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:37:10,151 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:37:10,166 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_32f84b65-7846-4f39-aa2e-3804a851510b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c[1014,1027] [2022-11-25 22:37:10,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:37:10,382 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:37:10,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:37:10 WrapperNode [2022-11-25 22:37:10,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:37:10,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:37:10,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:37:10,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:37:10,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:37:10" (1/1) ... [2022-11-25 22:37:10,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:37:10" (1/1) ... [2022-11-25 22:37:10,542 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1323 [2022-11-25 22:37:10,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:37:10,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:37:10,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:37:10,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:37:10,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:37:10" (1/1) ... [2022-11-25 22:37:10,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:37:10" (1/1) ... [2022-11-25 22:37:10,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:37:10" (1/1) ... [2022-11-25 22:37:10,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:37:10" (1/1) ... [2022-11-25 22:37:10,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:37:10" (1/1) ... [2022-11-25 22:37:10,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:37:10" (1/1) ... [2022-11-25 22:37:10,611 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:37:10" (1/1) ... [2022-11-25 22:37:10,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:37:10" (1/1) ... [2022-11-25 22:37:10,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:37:10,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:37:10,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:37:10,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:37:10,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:37:10" (1/1) ... [2022-11-25 22:37:10,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:37:10,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:37:10,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:37:10,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:37:10,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:37:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:37:11,216 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:37:11,233 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:37:14,634 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:37:14,642 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:37:14,643 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 22:37:14,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:37:14 BoogieIcfgContainer [2022-11-25 22:37:14,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:37:14,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:37:14,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:37:14,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:37:14,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:37:09" (1/3) ... [2022-11-25 22:37:14,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c47a800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:37:14, skipping insertion in model container [2022-11-25 22:37:14,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:37:10" (2/3) ... [2022-11-25 22:37:14,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c47a800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:37:14, skipping insertion in model container [2022-11-25 22:37:14,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:37:14" (3/3) ... [2022-11-25 22:37:14,657 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-11-25 22:37:14,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:37:14,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:37:14,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:37:14,747 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;@1e20ca84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:37:14,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:37:14,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:37:14,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 22:37:14,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:37:14,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 22:37:14,760 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:37:14,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:37:14,766 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-25 22:37:14,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:37:14,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496080443] [2022-11-25 22:37:14,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:37:14,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:37:14,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:37:14,791 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:37:14,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 22:37:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:37:15,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-25 22:37:15,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:37:15,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:37:15,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:37:15,700 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:37:15,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496080443] [2022-11-25 22:37:15,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496080443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:37:15,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:37:15,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:37:15,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862184764] [2022-11-25 22:37:15,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:37:15,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:37:15,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:37:15,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:37:15,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:37:15,750 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:37:16,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:37:16,411 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-25 22:37:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:37:16,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 22:37:16,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:37:16,424 INFO L225 Difference]: With dead ends: 20 [2022-11-25 22:37:16,424 INFO L226 Difference]: Without dead ends: 11 [2022-11-25 22:37:16,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:37:16,432 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:37:16,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 22:37:16,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-25 22:37:16,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-25 22:37:16,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:37:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-25 22:37:16,475 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-25 22:37:16,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:37:16,476 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-25 22:37:16,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:37:16,476 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-25 22:37:16,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 22:37:16,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:37:16,477 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 22:37:16,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-25 22:37:16,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:37:16,692 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:37:16,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:37:16,693 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-25 22:37:16,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:37:16,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983761727] [2022-11-25 22:37:16,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:37:16,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:37:16,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:37:16,698 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:37:16,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 22:37:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:37:18,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 111 conjunts are in the unsatisfiable core [2022-11-25 22:37:18,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:37:20,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:37:20,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:37:42,447 WARN L233 SmtUtils]: Spent 18.41s on a formula simplification that was a NOOP. DAG size: 226 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:37:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:37:43,152 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:37:43,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983761727] [2022-11-25 22:37:43,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983761727] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:37:43,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [759417982] [2022-11-25 22:37:43,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:37:43,154 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:37:43,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:37:43,159 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:37:43,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-25 22:37:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:37:44,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 113 conjunts are in the unsatisfiable core [2022-11-25 22:37:44,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:37:46,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:37:46,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:38:20,550 WARN L233 SmtUtils]: Spent 30.43s on a formula simplification. DAG size of input: 85 DAG size of output: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:40:08,650 WARN L233 SmtUtils]: Spent 1.68m on a formula simplification. DAG size of input: 253 DAG size of output: 247 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:40:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:40:09,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [759417982] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:40:09,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740739056] [2022-11-25 22:40:09,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:09,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:40:09,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:40:09,659 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:40:09,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 22:40:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:10,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 116 conjunts are in the unsatisfiable core [2022-11-25 22:40:10,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:40:12,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:40:12,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:42:05,208 WARN L233 SmtUtils]: Spent 1.68m on a formula simplification. DAG size of input: 253 DAG size of output: 247 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:43:01,780 WARN L233 SmtUtils]: Spent 50.58s on a formula simplification that was a NOOP. DAG size: 251 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:43:02,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:43:02,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740739056] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:43:02,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:43:02,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 15 [2022-11-25 22:43:02,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558276488] [2022-11-25 22:43:02,382 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:43:02,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 22:43:02,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:43:02,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 22:43:02,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=145, Unknown=9, NotChecked=0, Total=210 [2022-11-25 22:43:02,391 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:43:10,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:43:11,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:43:11,086 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-25 22:43:11,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 22:43:11,088 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 22:43:11,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:43:11,088 INFO L225 Difference]: With dead ends: 16 [2022-11-25 22:43:11,089 INFO L226 Difference]: Without dead ends: 14 [2022-11-25 22:43:11,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 335.2s TimeCoverageRelationStatistics Valid=91, Invalid=204, Unknown=11, NotChecked=0, Total=306 [2022-11-25 22:43:11,099 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:43:11,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 26 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-25 22:43:11,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-25 22:43:11,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-25 22:43:11,111 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) [2022-11-25 22:43:11,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-25 22:43:11,113 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-25 22:43:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:43:11,114 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-25 22:43:11,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:43:11,114 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-25 22:43:11,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 22:43:11,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:43:11,115 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 22:43:11,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:43:11,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 22:43:11,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-25 22:43:11,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:43:11,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:43:11,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:43:11,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-25 22:43:11,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:43:11,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940194745] [2022-11-25 22:43:11,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:43:11,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:43:11,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:43:11,737 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:43:11,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 22:43:14,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:43:14,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:43:14,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 236 conjunts are in the unsatisfiable core [2022-11-25 22:43:14,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:43:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:43:19,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:44:57,620 WARN L233 SmtUtils]: Spent 1.52m on a formula simplification that was a NOOP. DAG size: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:47:14,500 WARN L233 SmtUtils]: Spent 2.00m on a formula simplification that was a NOOP. DAG size: 2592 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:47:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:47:19,786 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:47:19,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940194745] [2022-11-25 22:47:19,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940194745] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:47:19,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [203085616] [2022-11-25 22:47:19,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:47:19,787 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:47:19,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:47:19,793 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:47:19,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f84b65-7846-4f39-aa2e-3804a851510b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-25 22:47:22,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:47:22,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:47:22,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-25 22:47:22,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:47:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:47:34,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:48:40,217 WARN L233 SmtUtils]: Spent 1.00m on a formula simplification. DAG size of input: 100 DAG size of output: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:49:36,207 WARN L233 SmtUtils]: Spent 44.00s on a formula simplification that was a NOOP. DAG size: 226 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)