./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3f80ae0ffd409ff2e33efb5f94d125906ee99568b94f1fb765fcd8cdc265af1c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 13:45:59,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:45:59,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:45:59,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:45:59,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:45:59,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:45:59,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:45:59,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:45:59,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:45:59,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:45:59,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:45:59,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:45:59,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:45:59,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:45:59,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:45:59,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:45:59,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:45:59,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:45:59,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:45:59,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:45:59,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:45:59,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:45:59,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:45:59,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:45:59,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:45:59,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:45:59,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:45:59,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:45:59,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:45:59,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:45:59,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:45:59,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:45:59,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:45:59,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:45:59,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:45:59,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:45:59,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:45:59,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:45:59,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:45:59,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:45:59,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:45:59,825 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 13:45:59,859 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:45:59,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:45:59,863 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:45:59,863 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:45:59,864 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:45:59,865 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:45:59,865 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:45:59,865 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:45:59,865 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:45:59,866 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:45:59,867 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:45:59,867 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:45:59,867 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:45:59,868 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:45:59,868 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:45:59,868 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:45:59,869 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:45:59,869 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:45:59,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:45:59,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:45:59,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:45:59,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:45:59,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:45:59,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:45:59,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:45:59,872 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:45:59,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:45:59,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:45:59,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:45:59,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:45:59,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:45:59,874 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:45:59,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:45:59,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:45:59,875 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:45:59,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:45:59,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:45:59,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:45:59,876 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_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f80ae0ffd409ff2e33efb5f94d125906ee99568b94f1fb765fcd8cdc265af1c [2022-11-23 13:46:00,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:46:00,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:46:00,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:46:00,203 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:46:00,203 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:46:00,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c [2022-11-23 13:46:03,196 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:46:03,443 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:46:03,445 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c [2022-11-23 13:46:03,453 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/data/dbf81b3ff/dcf4530dd2d54be6975effb81ebf14e0/FLAG2ea4e5db7 [2022-11-23 13:46:03,471 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/data/dbf81b3ff/dcf4530dd2d54be6975effb81ebf14e0 [2022-11-23 13:46:03,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:46:03,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:46:03,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:46:03,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:46:03,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:46:03,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:46:03" (1/1) ... [2022-11-23 13:46:03,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f66483e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:03, skipping insertion in model container [2022-11-23 13:46:03,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:46:03" (1/1) ... [2022-11-23 13:46:03,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:46:03,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:46:03,670 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_a937bb38-e979-4f53-9c30-a2493730b52f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c[1107,1120] [2022-11-23 13:46:03,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:46:03,723 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:46:03,734 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_a937bb38-e979-4f53-9c30-a2493730b52f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c[1107,1120] [2022-11-23 13:46:03,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:46:03,772 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:46:03,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:03 WrapperNode [2022-11-23 13:46:03,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:46:03,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:46:03,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:46:03,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:46:03,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:03" (1/1) ... [2022-11-23 13:46:03,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:03" (1/1) ... [2022-11-23 13:46:03,814 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 131 [2022-11-23 13:46:03,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:46:03,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:46:03,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:46:03,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:46:03,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:03" (1/1) ... [2022-11-23 13:46:03,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:03" (1/1) ... [2022-11-23 13:46:03,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:03" (1/1) ... [2022-11-23 13:46:03,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:03" (1/1) ... [2022-11-23 13:46:03,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:03" (1/1) ... [2022-11-23 13:46:03,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:03" (1/1) ... [2022-11-23 13:46:03,840 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:03" (1/1) ... [2022-11-23 13:46:03,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:03" (1/1) ... [2022-11-23 13:46:03,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:46:03,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:46:03,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:46:03,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:46:03,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:03" (1/1) ... [2022-11-23 13:46:03,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:46:03,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:46:03,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:46:03,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:46:03,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:46:03,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:46:04,023 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:46:04,025 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:46:04,238 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:46:04,258 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:46:04,258 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 13:46:04,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:04 BoogieIcfgContainer [2022-11-23 13:46:04,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:46:04,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:46:04,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:46:04,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:46:04,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:46:03" (1/3) ... [2022-11-23 13:46:04,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab9c48f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:46:04, skipping insertion in model container [2022-11-23 13:46:04,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:03" (2/3) ... [2022-11-23 13:46:04,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab9c48f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:46:04, skipping insertion in model container [2022-11-23 13:46:04,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:04" (3/3) ... [2022-11-23 13:46:04,271 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b06.c [2022-11-23 13:46:04,290 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:46:04,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:46:04,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:46:04,339 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;@5c8835a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:46:04,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:46:04,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:04,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 13:46:04,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:04,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 13:46:04,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:04,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:04,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-23 13:46:04,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:46:04,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630538986] [2022-11-23 13:46:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:04,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:46:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:46:04,668 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 13:46:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:46:04,850 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 13:46:04,852 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 13:46:04,853 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 13:46:04,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:46:04,860 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 13:46:04,865 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 13:46:04,888 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 13:46:04,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:46:04 BoogieIcfgContainer [2022-11-23 13:46:04,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 13:46:04,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 13:46:04,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 13:46:04,902 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 13:46:04,904 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:04" (3/4) ... [2022-11-23 13:46:04,907 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 13:46:04,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 13:46:04,910 INFO L158 Benchmark]: Toolchain (without parser) took 1433.96ms. Allocated memory was 142.6MB in the beginning and 182.5MB in the end (delta: 39.8MB). Free memory was 110.4MB in the beginning and 149.2MB in the end (delta: -38.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:46:04,911 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:46:04,911 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.95ms. Allocated memory is still 142.6MB. Free memory was 110.4MB in the beginning and 98.4MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 13:46:04,913 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.17ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 96.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:46:04,914 INFO L158 Benchmark]: Boogie Preprocessor took 28.68ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 94.7MB in the end (delta: 952.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:46:04,919 INFO L158 Benchmark]: RCFGBuilder took 416.62ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 74.1MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-23 13:46:04,921 INFO L158 Benchmark]: TraceAbstraction took 634.53ms. Allocated memory was 142.6MB in the beginning and 182.5MB in the end (delta: 39.8MB). Free memory was 73.8MB in the beginning and 149.2MB in the end (delta: -75.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-23 13:46:04,921 INFO L158 Benchmark]: Witness Printer took 6.41ms. Allocated memory is still 182.5MB. Free memory is still 149.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:46:04,929 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.95ms. Allocated memory is still 142.6MB. Free memory was 110.4MB in the beginning and 98.4MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.17ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 96.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.68ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 94.7MB in the end (delta: 952.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 416.62ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 74.1MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 634.53ms. Allocated memory was 142.6MB in the beginning and 182.5MB in the end (delta: 39.8MB). Free memory was 73.8MB in the beginning and 149.2MB in the end (delta: -75.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 6.41ms. Allocated memory is still 182.5MB. Free memory is still 149.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 85, overapproximation of bitwiseAnd at line 63. 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_11 mask_SORT_11 = (SORT_11)-1 >> (sizeof(SORT_11) * 8 - 2); [L29] const SORT_11 msb_SORT_11 = (SORT_11)1 << (2 - 1); [L31] const SORT_15 mask_SORT_15 = (SORT_15)-1 >> (sizeof(SORT_15) * 8 - 32); [L32] const SORT_15 msb_SORT_15 = (SORT_15)1 << (32 - 1); [L34] const SORT_1 var_5 = 0; [L35] const SORT_11 var_12 = 0; [L36] const SORT_15 var_17 = 2; [L37] const SORT_1 var_22 = 1; [L38] const SORT_11 var_39 = 1; [L40] SORT_1 input_2; [L41] SORT_1 input_3; [L42] SORT_1 input_4; [L43] SORT_11 input_26; [L44] SORT_11 input_40; [L45] SORT_1 input_45; [L47] SORT_1 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_1 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L49] SORT_11 state_13 = __VERIFIER_nondet_uchar() & mask_SORT_11; [L50] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L52] SORT_1 init_7_arg_1 = var_5; [L53] state_6 = init_7_arg_1 [L54] SORT_1 init_9_arg_1 = var_5; [L55] state_8 = init_9_arg_1 [L56] SORT_11 init_14_arg_1 = var_12; [L57] state_13 = init_14_arg_1 [L58] SORT_1 init_32_arg_1 = var_5; [L59] state_31 = init_32_arg_1 VAL [init_14_arg_1=0, init_32_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_11=3, mask_SORT_15=4294967295, msb_SORT_1=1, msb_SORT_11=2, msb_SORT_15=2147483648, state_13=0, state_31=0, state_6=0, state_8=0, var_12=0, var_17=2, var_22=1, var_39=1, var_5=0] [L62] input_2 = __VERIFIER_nondet_uchar() [L63] input_2 = input_2 & mask_SORT_1 [L64] input_3 = __VERIFIER_nondet_uchar() [L65] input_3 = input_3 & mask_SORT_1 [L66] input_4 = __VERIFIER_nondet_uchar() [L67] input_26 = __VERIFIER_nondet_uchar() [L68] input_40 = __VERIFIER_nondet_uchar() [L69] input_45 = __VERIFIER_nondet_uchar() [L72] SORT_1 var_10_arg_0 = state_6; [L73] SORT_1 var_10_arg_1 = state_8; [L74] SORT_1 var_10 = var_10_arg_0 == var_10_arg_1; [L75] SORT_11 var_16_arg_0 = state_13; [L76] var_16_arg_0 = var_16_arg_0 & mask_SORT_11 [L77] SORT_15 var_16 = var_16_arg_0; [L78] SORT_15 var_18_arg_0 = var_16; [L79] SORT_15 var_18_arg_1 = var_17; [L80] SORT_1 var_18 = var_18_arg_0 != var_18_arg_1; [L81] SORT_1 var_19_arg_0 = var_10; [L82] SORT_1 var_19_arg_1 = var_18; [L83] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L84] SORT_1 var_23_arg_0 = var_19; [L85] SORT_1 var_23 = ~var_23_arg_0; [L86] SORT_1 var_24_arg_0 = var_22; [L87] SORT_1 var_24_arg_1 = var_23; [L88] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L89] var_24 = var_24 & mask_SORT_1 [L90] SORT_1 bad_25_arg_0 = var_24; [L91] CALL __VERIFIER_assert(!(bad_25_arg_0)) [L20] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L20] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 13:46:04,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3f80ae0ffd409ff2e33efb5f94d125906ee99568b94f1fb765fcd8cdc265af1c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 13:46:07,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:46:07,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:46:07,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:46:07,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:46:07,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:46:07,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:46:07,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:46:07,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:46:07,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:46:07,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:46:07,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:46:07,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:46:07,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:46:07,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:46:07,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:46:07,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:46:07,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:46:07,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:46:07,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:46:07,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:46:07,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:46:07,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:46:07,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:46:07,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:46:07,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:46:07,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:46:07,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:46:07,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:46:07,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:46:07,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:46:07,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:46:07,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:46:07,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:46:07,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:46:07,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:46:07,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:46:07,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:46:07,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:46:07,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:46:07,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:46:07,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-23 13:46:07,608 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:46:07,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:46:07,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:46:07,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:46:07,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:46:07,611 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:46:07,612 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:46:07,612 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:46:07,612 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:46:07,612 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:46:07,613 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:46:07,614 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:46:07,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:46:07,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:46:07,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:46:07,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:46:07,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:46:07,616 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 13:46:07,616 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 13:46:07,616 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 13:46:07,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:46:07,617 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:46:07,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:46:07,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:46:07,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 13:46:07,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:46:07,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:46:07,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:46:07,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:46:07,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:46:07,619 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 13:46:07,619 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 13:46:07,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:46:07,619 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:46:07,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 13:46:07,620 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_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f80ae0ffd409ff2e33efb5f94d125906ee99568b94f1fb765fcd8cdc265af1c [2022-11-23 13:46:07,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:46:08,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:46:08,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:46:08,013 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:46:08,014 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:46:08,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c [2022-11-23 13:46:11,113 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:46:11,295 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:46:11,296 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c [2022-11-23 13:46:11,302 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/data/7763a3ec1/5fcdd19510ca4dcdb99c3a4680ea16b6/FLAG6e44e7550 [2022-11-23 13:46:11,317 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/data/7763a3ec1/5fcdd19510ca4dcdb99c3a4680ea16b6 [2022-11-23 13:46:11,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:46:11,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:46:11,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:46:11,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:46:11,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:46:11,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:46:11" (1/1) ... [2022-11-23 13:46:11,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d9bc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:11, skipping insertion in model container [2022-11-23 13:46:11,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:46:11" (1/1) ... [2022-11-23 13:46:11,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:46:11,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:46:11,493 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_a937bb38-e979-4f53-9c30-a2493730b52f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c[1107,1120] [2022-11-23 13:46:11,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:46:11,603 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:46:11,616 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_a937bb38-e979-4f53-9c30-a2493730b52f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c[1107,1120] [2022-11-23 13:46:11,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:46:11,686 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:46:11,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:11 WrapperNode [2022-11-23 13:46:11,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:46:11,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:46:11,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:46:11,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:46:11,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:11" (1/1) ... [2022-11-23 13:46:11,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:11" (1/1) ... [2022-11-23 13:46:11,766 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 131 [2022-11-23 13:46:11,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:46:11,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:46:11,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:46:11,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:46:11,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:11" (1/1) ... [2022-11-23 13:46:11,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:11" (1/1) ... [2022-11-23 13:46:11,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:11" (1/1) ... [2022-11-23 13:46:11,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:11" (1/1) ... [2022-11-23 13:46:11,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:11" (1/1) ... [2022-11-23 13:46:11,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:11" (1/1) ... [2022-11-23 13:46:11,811 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:11" (1/1) ... [2022-11-23 13:46:11,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:11" (1/1) ... [2022-11-23 13:46:11,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:46:11,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:46:11,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:46:11,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:46:11,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:11" (1/1) ... [2022-11-23 13:46:11,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:46:11,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:46:11,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:46:11,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:46:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:46:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:46:12,041 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:46:12,044 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:46:12,245 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:46:12,251 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:46:12,252 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 13:46:12,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:12 BoogieIcfgContainer [2022-11-23 13:46:12,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:46:12,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:46:12,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:46:12,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:46:12,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:46:11" (1/3) ... [2022-11-23 13:46:12,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c88eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:46:12, skipping insertion in model container [2022-11-23 13:46:12,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:11" (2/3) ... [2022-11-23 13:46:12,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c88eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:46:12, skipping insertion in model container [2022-11-23 13:46:12,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:12" (3/3) ... [2022-11-23 13:46:12,271 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b06.c [2022-11-23 13:46:12,324 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:46:12,324 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:46:12,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:46:12,405 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;@70216ff2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:46:12,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:46:12,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:12,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 13:46:12,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:12,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 13:46:12,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:12,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:12,427 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-23 13:46:12,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:46:12,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475115112] [2022-11-23 13:46:12,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:12,439 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:46:12,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:46:12,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:46:12,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 13:46:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:12,538 WARN L261 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 13:46:12,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:12,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:12,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:46:12,821 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:46:12,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475115112] [2022-11-23 13:46:12,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475115112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:46:12,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:46:12,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:46:12,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183090002] [2022-11-23 13:46:12,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:46:12,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:46:12,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:46:12,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:46:12,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:46:12,858 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:12,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:12,960 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-23 13:46:12,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:46:12,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 13:46:12,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:12,971 INFO L225 Difference]: With dead ends: 20 [2022-11-23 13:46:12,972 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 13:46:12,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:46:12,979 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:12,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:46:13,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 13:46:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-23 13:46:13,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:13,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 13:46:13,026 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 13:46:13,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:13,027 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 13:46:13,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:13,027 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 13:46:13,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 13:46:13,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:13,028 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:13,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:13,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:46:13,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:13,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:13,240 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-23 13:46:13,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:46:13,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660854752] [2022-11-23 13:46:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:13,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:46:13,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:46:13,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:46:13,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 13:46:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:13,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-23 13:46:13,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:14,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:46:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:15,111 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:46:15,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660854752] [2022-11-23 13:46:15,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660854752] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:46:15,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [972083917] [2022-11-23 13:46:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:15,112 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 13:46:15,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 13:46:15,141 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 13:46:15,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-23 13:46:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:15,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-23 13:46:15,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:15,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:46:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:16,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [972083917] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:46:16,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93817555] [2022-11-23 13:46:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:16,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:46:16,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:46:16,442 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:46:16,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 13:46:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:16,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-23 13:46:16,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:16,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:46:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:17,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93817555] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:46:17,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 13:46:17,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 6, 6] total 15 [2022-11-23 13:46:17,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467326887] [2022-11-23 13:46:17,524 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 13:46:17,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 13:46:17,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:46:17,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 13:46:17,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-23 13:46:17,526 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:17,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:17,872 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-23 13:46:17,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 13:46:17,874 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 13:46:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:17,874 INFO L225 Difference]: With dead ends: 16 [2022-11-23 13:46:17,874 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 13:46:17,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-11-23 13:46:17,876 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:17,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 25 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:46:17,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 13:46:17,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-23 13:46:17,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-23 13:46:17,883 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-23 13:46:17,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:17,883 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-23 13:46:17,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:17,883 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-23 13:46:17,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 13:46:17,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:17,884 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 13:46:17,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:18,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:18,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:18,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:46:18,499 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:18,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:18,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-23 13:46:18,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:46:18,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625530501] [2022-11-23 13:46:18,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 13:46:18,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:46:18,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:46:18,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:46:18,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 13:46:18,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 13:46:18,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:46:18,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-23 13:46:18,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:19,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:46:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:20,863 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:46:20,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625530501] [2022-11-23 13:46:20,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625530501] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:46:20,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [983199391] [2022-11-23 13:46:20,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 13:46:20,864 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 13:46:20,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 13:46:20,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 13:46:20,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-23 13:46:21,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 13:46:21,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:46:21,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-23 13:46:21,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:21,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:46:23,010 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:23,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [983199391] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:46:23,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763039648] [2022-11-23 13:46:23,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 13:46:23,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:46:23,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:46:23,015 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:46:23,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 13:46:23,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 13:46:23,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:46:23,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-23 13:46:23,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:23,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:23,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:46:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:24,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763039648] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:46:24,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 13:46:24,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6, 6, 7, 6] total 20 [2022-11-23 13:46:24,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986874207] [2022-11-23 13:46:24,966 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 13:46:24,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 13:46:24,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:46:24,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 13:46:24,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-11-23 13:46:24,968 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:25,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:25,367 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-23 13:46:25,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 13:46:25,368 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 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 11 [2022-11-23 13:46:25,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:25,368 INFO L225 Difference]: With dead ends: 19 [2022-11-23 13:46:25,368 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 13:46:25,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2022-11-23 13:46:25,370 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 29 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:25,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:46:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 13:46:25,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-23 13:46:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:25,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-23 13:46:25,375 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-23 13:46:25,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:25,376 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-23 13:46:25,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:25,376 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-23 13:46:25,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 13:46:25,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:25,376 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-23 13:46:25,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:25,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:25,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:25,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 13:46:25,994 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:25,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:25,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-23 13:46:25,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:46:25,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799435552] [2022-11-23 13:46:25,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 13:46:25,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:46:25,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:46:25,997 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:46:26,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 13:46:26,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 13:46:26,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:46:26,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-23 13:46:26,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 13:46:26,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:46:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 13:46:27,223 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:46:27,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799435552] [2022-11-23 13:46:27,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799435552] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:46:27,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [400928040] [2022-11-23 13:46:27,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 13:46:27,226 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 13:46:27,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 13:46:27,227 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 13:46:27,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-23 13:46:27,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 13:46:27,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:46:27,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-23 13:46:27,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:27,850 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 13:46:27,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:46:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 13:46:28,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [400928040] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:46:28,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37195432] [2022-11-23 13:46:28,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 13:46:28,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:46:28,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:46:28,355 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:46:28,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 13:46:28,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 13:46:28,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:46:28,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-23 13:46:28,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 13:46:28,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:46:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 13:46:29,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37195432] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:46:29,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 13:46:29,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-11-23 13:46:29,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135210918] [2022-11-23 13:46:29,268 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 13:46:29,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 13:46:29,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:46:29,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 13:46:29,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:46:29,269 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:29,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:29,364 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-23 13:46:29,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:46:29,366 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 13:46:29,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:29,366 INFO L225 Difference]: With dead ends: 15 [2022-11-23 13:46:29,366 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 13:46:29,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-23 13:46:29,367 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:29,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:46:29,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 13:46:29,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 13:46:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 13:46:29,369 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-11-23 13:46:29,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:29,369 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 13:46:29,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:46:29,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 13:46:29,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 13:46:29,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 13:46:29,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:29,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:29,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:29,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 13:46:29,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 13:46:30,151 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 13:46:30,152 INFO L895 garLoopResultBuilder]: At program point L60-2(lines 60 145) the Hoare annotation is: (let ((.cse0 (= (_ bv1 8) |ULTIMATE.start_main_~var_22~0#1|)) (.cse1 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse2 (= (_ bv1 8) |ULTIMATE.start_main_~var_39~0#1|)) (.cse5 (= |ULTIMATE.start_main_~state_6~0#1| (_ bv0 8))) (.cse4 (= (_ bv0 8) |ULTIMATE.start_main_~state_13~0#1|)) (.cse3 (= (_ bv3 8) |ULTIMATE.start_main_~mask_SORT_11~0#1|)) (.cse6 (= (_ bv2 32) |ULTIMATE.start_main_~var_17~0#1|)) (.cse7 (= |ULTIMATE.start_main_~var_12~0#1| (_ bv0 8)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= |ULTIMATE.start_main_~var_5~0#1| |ULTIMATE.start_main_~state_31~0#1|) .cse6 (= |ULTIMATE.start_main_~state_8~0#1| |ULTIMATE.start_main_~var_5~0#1|) .cse7 (= ((_ zero_extend 24) |ULTIMATE.start_main_~state_6~0#1|) ((_ zero_extend 24) |ULTIMATE.start_main_~state_8~0#1|))) (and .cse0 .cse1 (= |ULTIMATE.start_main_~var_5~0#1| (_ bv0 8)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse2 (or (and (= |ULTIMATE.start_main_~state_8~0#1| (_ bv0 8)) .cse5) (let ((.cse8 ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_1~0#1|))))) (and (= |ULTIMATE.start_main_~state_8~0#1| .cse8) (= |ULTIMATE.start_main_~state_6~0#1| .cse8)))) (or (= (_ bv1 8) |ULTIMATE.start_main_~state_13~0#1|) .cse4) .cse3 .cse6 .cse7))) [2022-11-23 13:46:30,152 INFO L899 garLoopResultBuilder]: For program point L60-3(lines 60 145) no Hoare annotation was computed. [2022-11-23 13:46:30,152 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-23 13:46:30,152 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 13:46:30,152 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-23 13:46:30,152 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-23 13:46:30,152 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-23 13:46:30,152 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-23 13:46:30,152 INFO L895 garLoopResultBuilder]: At program point L146(lines 22 147) the Hoare annotation is: false [2022-11-23 13:46:30,153 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-23 13:46:30,155 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-23 13:46:30,157 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 13:46:30,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:46:30 BoogieIcfgContainer [2022-11-23 13:46:30,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 13:46:30,171 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 13:46:30,171 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 13:46:30,171 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 13:46:30,172 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:12" (3/4) ... [2022-11-23 13:46:30,175 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 13:46:30,185 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-23 13:46:30,185 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 13:46:30,185 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 13:46:30,236 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 13:46:30,236 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 13:46:30,237 INFO L158 Benchmark]: Toolchain (without parser) took 18916.98ms. Allocated memory was 71.3MB in the beginning and 295.7MB in the end (delta: 224.4MB). Free memory was 45.0MB in the beginning and 113.8MB in the end (delta: -68.9MB). Peak memory consumption was 153.7MB. Max. memory is 16.1GB. [2022-11-23 13:46:30,237 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 71.3MB. Free memory is still 49.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:46:30,238 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.90ms. Allocated memory is still 71.3MB. Free memory was 44.8MB in the beginning and 32.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 13:46:30,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.31ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 31.8MB in the beginning and 65.8MB in the end (delta: -34.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 13:46:30,238 INFO L158 Benchmark]: Boogie Preprocessor took 52.02ms. Allocated memory is still 86.0MB. Free memory was 65.8MB in the beginning and 64.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:46:30,239 INFO L158 Benchmark]: RCFGBuilder took 444.14ms. Allocated memory is still 86.0MB. Free memory was 64.2MB in the beginning and 50.0MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 13:46:30,239 INFO L158 Benchmark]: TraceAbstraction took 17904.98ms. Allocated memory was 86.0MB in the beginning and 295.7MB in the end (delta: 209.7MB). Free memory was 49.6MB in the beginning and 117.0MB in the end (delta: -67.4MB). Peak memory consumption was 141.7MB. Max. memory is 16.1GB. [2022-11-23 13:46:30,239 INFO L158 Benchmark]: Witness Printer took 65.48ms. Allocated memory is still 295.7MB. Free memory was 117.0MB in the beginning and 113.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:46:30,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 71.3MB. Free memory is still 49.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.90ms. Allocated memory is still 71.3MB. Free memory was 44.8MB in the beginning and 32.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.31ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 31.8MB in the beginning and 65.8MB in the end (delta: -34.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.02ms. Allocated memory is still 86.0MB. Free memory was 65.8MB in the beginning and 64.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 444.14ms. Allocated memory is still 86.0MB. Free memory was 64.2MB in the beginning and 50.0MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 17904.98ms. Allocated memory was 86.0MB in the beginning and 295.7MB in the end (delta: 209.7MB). Free memory was 49.6MB in the beginning and 117.0MB in the end (delta: -67.4MB). Peak memory consumption was 141.7MB. Max. memory is 16.1GB. * Witness Printer took 65.48ms. Allocated memory is still 295.7MB. Free memory was 117.0MB in the beginning and 113.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.8s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 72 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 97 IncrementalHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 15 mSDtfsCounter, 97 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 140 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 93 HoareAnnotationTreeSize, 2 FomulaSimplifications, 103 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 104 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 13.0s InterpolantComputationTime, 104 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 184 ConstructedInterpolants, 67 QuantifiedInterpolants, 6928 SizeOfPredicates, 589 NumberOfNonLiveVariables, 1378 ConjunctsInSsa, 554 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 54/144 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: ((((((((((1bv8 == var_22 && 1bv8 == mask_SORT_1) && 1bv8 == var_39) && 3bv8 == mask_SORT_11) && 0bv8 == state_13) && state_6 == 0bv8) && var_5 == state_31) && 2bv32 == var_17) && state_8 == var_5) && var_12 == 0bv8) && ~zero_extendFrom8To32(state_6) == ~zero_extendFrom8To32(state_8)) || (((((((((1bv8 == var_22 && 1bv8 == mask_SORT_1) && var_5 == 0bv8) && cond == 1bv32) && 1bv8 == var_39) && ((state_8 == 0bv8 && state_6 == 0bv8) || (state_8 == ~bvand32(1bv32, ~zero_extendFrom8To32(mask_SORT_1))[7:0] && state_6 == ~bvand32(1bv32, ~zero_extendFrom8To32(mask_SORT_1))[7:0]))) && (1bv8 == state_13 || 0bv8 == state_13)) && 3bv8 == mask_SORT_11) && 2bv32 == var_17) && var_12 == 0bv8) RESULT: Ultimate proved your program to be correct! [2022-11-23 13:46:30,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a937bb38-e979-4f53-9c30-a2493730b52f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE