./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0e771275e23cfd9924146ad4a0592fc14c96989d7773b80a2279912b761b2779 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:47:22,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:47:22,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:47:22,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:47:22,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:47:22,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:47:22,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:47:22,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:47:22,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:47:22,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:47:22,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:47:22,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:47:22,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:47:22,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:47:22,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:47:22,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:47:22,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:47:22,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:47:22,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:47:22,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:47:22,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:47:22,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:47:22,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:47:22,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:47:22,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:47:22,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:47:22,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:47:22,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:47:22,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:47:22,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:47:22,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:47:22,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:47:22,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:47:22,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:47:22,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:47:22,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:47:22,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:47:22,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:47:22,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:47:22,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:47:22,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:47:22,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:47:22,810 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:47:22,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:47:22,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:47:22,812 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:47:22,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:47:22,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:47:22,813 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:47:22,814 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:47:22,814 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:47:22,814 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:47:22,815 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:47:22,815 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:47:22,815 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:47:22,816 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:47:22,816 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:47:22,816 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:47:22,817 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:47:22,817 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:47:22,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:47:22,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:47:22,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:47:22,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:47:22,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:47:22,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:47:22,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:47:22,821 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:47:22,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:47:22,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:47:22,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:47:22,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:47:22,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:47:22,823 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:47:22,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:47:22,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:47:22,824 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:47:22,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:47:22,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:47:22,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:47:22,825 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_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e771275e23cfd9924146ad4a0592fc14c96989d7773b80a2279912b761b2779 [2022-11-26 00:47:23,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:47:23,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:47:23,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:47:23,242 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:47:23,243 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:47:23,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c [2022-11-26 00:47:26,919 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:47:27,150 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:47:27,151 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c [2022-11-26 00:47:27,160 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/data/a3b894328/44f8207918804e77b2fcf420defe2138/FLAGbf067bbc4 [2022-11-26 00:47:27,178 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/data/a3b894328/44f8207918804e77b2fcf420defe2138 [2022-11-26 00:47:27,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:47:27,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:47:27,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:47:27,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:47:27,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:47:27,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:47:27" (1/1) ... [2022-11-26 00:47:27,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8fd7141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:27, skipping insertion in model container [2022-11-26 00:47:27,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:47:27" (1/1) ... [2022-11-26 00:47:27,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:47:27,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:47:27,446 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_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c[1107,1120] [2022-11-26 00:47:27,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:47:27,547 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:47:27,559 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_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c[1107,1120] [2022-11-26 00:47:27,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:47:27,598 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:47:27,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:27 WrapperNode [2022-11-26 00:47:27,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:47:27,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:47:27,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:47:27,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:47:27,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:27" (1/1) ... [2022-11-26 00:47:27,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:27" (1/1) ... [2022-11-26 00:47:27,649 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 110 [2022-11-26 00:47:27,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:47:27,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:47:27,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:47:27,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:47:27,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:27" (1/1) ... [2022-11-26 00:47:27,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:27" (1/1) ... [2022-11-26 00:47:27,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:27" (1/1) ... [2022-11-26 00:47:27,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:27" (1/1) ... [2022-11-26 00:47:27,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:27" (1/1) ... [2022-11-26 00:47:27,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:27" (1/1) ... [2022-11-26 00:47:27,687 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:27" (1/1) ... [2022-11-26 00:47:27,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:27" (1/1) ... [2022-11-26 00:47:27,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:47:27,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:47:27,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:47:27,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:47:27,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:27" (1/1) ... [2022-11-26 00:47:27,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:47:27,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:47:27,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:47:27,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:47:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:47:27,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:47:28,020 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:47:28,023 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:47:28,396 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:47:28,427 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:47:28,427 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:47:28,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:47:28 BoogieIcfgContainer [2022-11-26 00:47:28,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:47:28,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:47:28,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:47:28,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:47:28,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:47:27" (1/3) ... [2022-11-26 00:47:28,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d61bcb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:47:28, skipping insertion in model container [2022-11-26 00:47:28,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:27" (2/3) ... [2022-11-26 00:47:28,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d61bcb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:47:28, skipping insertion in model container [2022-11-26 00:47:28,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:47:28" (3/3) ... [2022-11-26 00:47:28,463 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal181.c [2022-11-26 00:47:28,488 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:47:28,488 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:47:28,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:47:28,580 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;@35f1ad18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:47:28,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:47:28,586 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:47:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:47:28,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:47:28,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:47:28,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:47:28,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:47:28,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-26 00:47:28,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:47:28,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637556863] [2022-11-26 00:47:28,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:47:28,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:47:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:47:28,923 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:47:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:47:29,093 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:47:29,096 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:47:29,098 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:47:29,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:47:29,106 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:47:29,112 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:47:29,132 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:47:29,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:47:29 BoogieIcfgContainer [2022-11-26 00:47:29,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:47:29,141 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:47:29,141 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:47:29,142 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:47:29,142 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:47:28" (3/4) ... [2022-11-26 00:47:29,147 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:47:29,147 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:47:29,149 INFO L158 Benchmark]: Toolchain (without parser) took 1965.68ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 86.1MB in the beginning and 116.3MB in the end (delta: -30.2MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2022-11-26 00:47:29,149 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 138.4MB. Free memory was 101.4MB in the beginning and 101.4MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:47:29,150 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.16ms. Allocated memory is still 138.4MB. Free memory was 86.1MB in the beginning and 74.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-26 00:47:29,151 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.23ms. Allocated memory is still 138.4MB. Free memory was 74.5MB in the beginning and 72.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:47:29,152 INFO L158 Benchmark]: Boogie Preprocessor took 36.06ms. Allocated memory is still 138.4MB. Free memory was 72.4MB in the beginning and 71.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:47:29,153 INFO L158 Benchmark]: RCFGBuilder took 737.75ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 71.0MB in the beginning and 138.4MB in the end (delta: -67.3MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2022-11-26 00:47:29,154 INFO L158 Benchmark]: TraceAbstraction took 707.40ms. Allocated memory is still 184.5MB. Free memory was 138.4MB in the beginning and 116.3MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-26 00:47:29,154 INFO L158 Benchmark]: Witness Printer took 6.14ms. Allocated memory is still 184.5MB. Free memory is still 116.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:47:29,158 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 138.4MB. Free memory was 101.4MB in the beginning and 101.4MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 415.16ms. Allocated memory is still 138.4MB. Free memory was 86.1MB in the beginning and 74.5MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.23ms. Allocated memory is still 138.4MB. Free memory was 74.5MB in the beginning and 72.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.06ms. Allocated memory is still 138.4MB. Free memory was 72.4MB in the beginning and 71.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 737.75ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 71.0MB in the beginning and 138.4MB in the end (delta: -67.3MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. * TraceAbstraction took 707.40ms. Allocated memory is still 184.5MB. Free memory was 138.4MB in the beginning and 116.3MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 6.14ms. Allocated memory is still 184.5MB. Free memory is still 116.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 62, overapproximation of bitwiseOr at line 78, overapproximation of bitwiseAnd at line 67. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 32); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (32 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 1); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (1 - 1); [L31] const SORT_3 var_7 = 0; [L32] const SORT_1 var_11 = 0; [L33] const SORT_3 var_24 = 1; [L35] SORT_1 input_2; [L36] SORT_3 input_4; [L37] SORT_1 input_5; [L38] SORT_1 input_6; [L40] SORT_3 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L41] SORT_1 state_12 = __VERIFIER_nondet_uint() & mask_SORT_1; [L42] SORT_3 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L43] SORT_1 state_17 = __VERIFIER_nondet_uint() & mask_SORT_1; [L45] SORT_3 init_9_arg_1 = var_7; [L46] state_8 = init_9_arg_1 [L47] SORT_1 init_13_arg_1 = var_11; [L48] state_12 = init_13_arg_1 [L49] SORT_3 init_15_arg_1 = var_7; [L50] state_14 = init_15_arg_1 [L51] SORT_1 init_18_arg_1 = var_11; [L52] state_17 = init_18_arg_1 VAL [init_13_arg_1=0, init_15_arg_1=0, init_18_arg_1=0, init_9_arg_1=0, mask_SORT_1=4294967295, mask_SORT_3=1, msb_SORT_1=2147483648, msb_SORT_3=1, state_12=0, state_14=0, state_17=0, state_8=0, var_11=0, var_24=1, var_7=0] [L55] input_2 = __VERIFIER_nondet_uint() [L56] input_4 = __VERIFIER_nondet_uchar() [L57] input_5 = __VERIFIER_nondet_uint() [L58] input_6 = __VERIFIER_nondet_uint() [L61] SORT_3 var_10_arg_0 = state_8; [L62] SORT_3 var_10 = ~var_10_arg_0; [L63] SORT_3 var_16_arg_0 = state_14; [L64] SORT_1 var_16_arg_1 = state_12; [L65] SORT_1 var_16_arg_2 = input_2; [L66] SORT_1 var_16 = var_16_arg_0 ? var_16_arg_1 : var_16_arg_2; [L67] var_16 = var_16 & mask_SORT_1 [L68] SORT_3 var_19_arg_0 = state_14; [L69] SORT_1 var_19_arg_1 = state_17; [L70] SORT_1 var_19_arg_2 = input_2; [L71] SORT_1 var_19 = var_19_arg_0 ? var_19_arg_1 : var_19_arg_2; [L72] var_19 = var_19 & mask_SORT_1 [L73] SORT_1 var_20_arg_0 = var_16; [L74] SORT_1 var_20_arg_1 = var_19; [L75] SORT_3 var_20 = var_20_arg_0 == var_20_arg_1; [L76] SORT_3 var_21_arg_0 = var_10; [L77] SORT_3 var_21_arg_1 = var_20; [L78] SORT_3 var_21 = var_21_arg_0 | var_21_arg_1; [L79] SORT_3 var_25_arg_0 = var_21; [L80] SORT_3 var_25 = ~var_25_arg_0; [L81] SORT_3 var_26_arg_0 = var_24; [L82] SORT_3 var_26_arg_1 = var_25; [L83] SORT_3 var_26 = var_26_arg_0 & var_26_arg_1; [L84] var_26 = var_26 & mask_SORT_3 [L85] SORT_3 bad_27_arg_0 = var_26; [L86] CALL __VERIFIER_assert(!(bad_27_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 00:47:29,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0e771275e23cfd9924146ad4a0592fc14c96989d7773b80a2279912b761b2779 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:47:32,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:47:32,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:47:32,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:47:32,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:47:32,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:47:32,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:47:32,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:47:32,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:47:32,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:47:32,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:47:32,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:47:32,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:47:32,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:47:32,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:47:32,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:47:32,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:47:32,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:47:32,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:47:32,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:47:32,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:47:32,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:47:32,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:47:32,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:47:32,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:47:32,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:47:32,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:47:32,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:47:32,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:47:32,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:47:32,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:47:32,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:47:32,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:47:32,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:47:32,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:47:32,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:47:32,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:47:32,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:47:32,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:47:32,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:47:32,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:47:32,466 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-26 00:47:32,509 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:47:32,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:47:32,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:47:32,511 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:47:32,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:47:32,512 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:47:32,512 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:47:32,512 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:47:32,513 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:47:32,513 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:47:32,513 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:47:32,513 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:47:32,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:47:32,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:47:32,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:47:32,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:47:32,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:47:32,516 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:47:32,516 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:47:32,516 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:47:32,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:47:32,517 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:47:32,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:47:32,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:47:32,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:47:32,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:47:32,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:47:32,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:47:32,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:47:32,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:47:32,520 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:47:32,520 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:47:32,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:47:32,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:47:32,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:47:32,521 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_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e771275e23cfd9924146ad4a0592fc14c96989d7773b80a2279912b761b2779 [2022-11-26 00:47:32,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:47:32,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:47:32,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:47:33,001 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:47:33,002 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:47:33,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c [2022-11-26 00:47:36,559 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:47:36,890 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:47:36,890 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c [2022-11-26 00:47:36,899 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/data/c5dde32f1/a0847764a4454390ac787e4893a6589b/FLAGbdc63df19 [2022-11-26 00:47:36,916 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/data/c5dde32f1/a0847764a4454390ac787e4893a6589b [2022-11-26 00:47:36,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:47:36,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:47:36,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:47:36,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:47:36,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:47:36,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:47:36" (1/1) ... [2022-11-26 00:47:36,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d11a6e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:36, skipping insertion in model container [2022-11-26 00:47:36,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:47:36" (1/1) ... [2022-11-26 00:47:36,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:47:36,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:47:37,207 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_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c[1107,1120] [2022-11-26 00:47:37,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:47:37,299 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:47:37,320 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_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c[1107,1120] [2022-11-26 00:47:37,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:47:37,358 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:47:37,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:37 WrapperNode [2022-11-26 00:47:37,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:47:37,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:47:37,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:47:37,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:47:37,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:37" (1/1) ... [2022-11-26 00:47:37,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:37" (1/1) ... [2022-11-26 00:47:37,407 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 110 [2022-11-26 00:47:37,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:47:37,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:47:37,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:47:37,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:47:37,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:37" (1/1) ... [2022-11-26 00:47:37,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:37" (1/1) ... [2022-11-26 00:47:37,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:37" (1/1) ... [2022-11-26 00:47:37,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:37" (1/1) ... [2022-11-26 00:47:37,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:37" (1/1) ... [2022-11-26 00:47:37,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:37" (1/1) ... [2022-11-26 00:47:37,436 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:37" (1/1) ... [2022-11-26 00:47:37,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:37" (1/1) ... [2022-11-26 00:47:37,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:47:37,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:47:37,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:47:37,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:47:37,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:37" (1/1) ... [2022-11-26 00:47:37,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:47:37,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:47:37,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:47:37,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:47:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:47:37,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:47:37,713 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:47:37,715 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:47:37,999 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:47:38,007 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:47:38,007 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:47:38,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:47:38 BoogieIcfgContainer [2022-11-26 00:47:38,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:47:38,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:47:38,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:47:38,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:47:38,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:47:36" (1/3) ... [2022-11-26 00:47:38,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b9f53f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:47:38, skipping insertion in model container [2022-11-26 00:47:38,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:47:37" (2/3) ... [2022-11-26 00:47:38,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b9f53f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:47:38, skipping insertion in model container [2022-11-26 00:47:38,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:47:38" (3/3) ... [2022-11-26 00:47:38,038 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal181.c [2022-11-26 00:47:38,077 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:47:38,077 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:47:38,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:47:38,187 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;@7777ace5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:47:38,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:47:38,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:47:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:47:38,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:47:38,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:47:38,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:47:38,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:47:38,214 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-26 00:47:38,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:47:38,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485103428] [2022-11-26 00:47:38,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:47:38,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:47:38,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:47:38,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:47:38,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 00:47:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:47:38,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-26 00:47:38,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:47:38,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:38,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:47:38,558 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:47:38,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485103428] [2022-11-26 00:47:38,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485103428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:47:38,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:47:38,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:47:38,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788147039] [2022-11-26 00:47:38,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:47:38,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:47:38,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:47:38,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:47:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:47:38,605 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:47:38,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:47:38,699 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-26 00:47:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:47:38,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 00:47:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:47:38,737 INFO L225 Difference]: With dead ends: 20 [2022-11-26 00:47:38,738 INFO L226 Difference]: Without dead ends: 11 [2022-11-26 00:47:38,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:47:38,758 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 [2022-11-26 00:47:38,760 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] [2022-11-26 00:47:38,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-26 00:47:38,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-26 00:47:38,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:47:38,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 00:47:38,832 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-26 00:47:38,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:47:38,832 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 00:47:38,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:47:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 00:47:38,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:47:38,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:47:38,834 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:47:38,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-26 00:47:39,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:47:39,049 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:47:39,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:47:39,050 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-26 00:47:39,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:47:39,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140582538] [2022-11-26 00:47:39,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:47:39,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:47:39,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:47:39,053 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:47:39,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-26 00:47:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:47:39,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-26 00:47:39,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:47:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:39,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:47:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:40,437 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:47:40,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140582538] [2022-11-26 00:47:40,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140582538] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:47:40,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1455255709] [2022-11-26 00:47:40,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:47:40,444 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:47:40,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:47:40,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:47:40,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-26 00:47:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:47:40,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-26 00:47:40,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:47:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:40,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:47:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:42,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1455255709] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:47:42,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023431508] [2022-11-26 00:47:42,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:47:42,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:47:42,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:47:42,332 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:47:42,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:47:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:47:42,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-26 00:47:42,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:47:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:42,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:47:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:43,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023431508] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:47:43,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:47:43,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 15 [2022-11-26 00:47:43,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727328983] [2022-11-26 00:47:43,331 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:47:43,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-26 00:47:43,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:47:43,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-26 00:47:43,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:47:43,334 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:47:43,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:47:43,499 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-26 00:47:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:47:43,500 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 00:47:43,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:47:43,500 INFO L225 Difference]: With dead ends: 16 [2022-11-26 00:47:43,500 INFO L226 Difference]: Without dead ends: 14 [2022-11-26 00:47:43,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:47:43,502 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:47:43,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 20 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:47:43,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-26 00:47:43,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-26 00:47:43,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:47:43,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-26 00:47:43,508 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-26 00:47:43,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:47:43,508 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-26 00:47:43,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:47:43,509 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-26 00:47:43,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:47:43,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:47:43,509 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-26 00:47:43,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:47:43,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-26 00:47:43,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:47:44,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:47:44,111 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:47:44,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:47:44,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-26 00:47:44,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:47:44,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510895235] [2022-11-26 00:47:44,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:47:44,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:47:44,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:47:44,115 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:47:44,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-26 00:47:44,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:47:44,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:47:44,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-26 00:47:44,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:47:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:44,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:47:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:45,649 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:47:45,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510895235] [2022-11-26 00:47:45,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510895235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:47:45,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [872879723] [2022-11-26 00:47:45,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:47:45,650 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:47:45,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:47:45,653 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:47:45,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-26 00:47:45,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:47:45,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:47:45,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-26 00:47:45,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:47:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:46,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:47:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:47,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [872879723] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:47:47,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261837394] [2022-11-26 00:47:47,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:47:47,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:47:47,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:47:47,212 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:47:47,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:47:47,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:47:47,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:47:47,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-26 00:47:47,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:47:47,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:47,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:47:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:50,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261837394] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:47:50,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:47:50,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 22 [2022-11-26 00:47:50,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586626495] [2022-11-26 00:47:50,217 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:47:50,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-26 00:47:50,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:47:50,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-26 00:47:50,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2022-11-26 00:47:50,220 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:47:50,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:47:50,580 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-11-26 00:47:50,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:47:50,581 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 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 [2022-11-26 00:47:50,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:47:50,582 INFO L225 Difference]: With dead ends: 13 [2022-11-26 00:47:50,582 INFO L226 Difference]: Without dead ends: 0 [2022-11-26 00:47:50,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2022-11-26 00:47:50,584 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:47:50,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 12 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:47:50,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-26 00:47:50,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-26 00:47:50,586 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) [2022-11-26 00:47:50,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-26 00:47:50,600 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-11-26 00:47:50,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:47:50,600 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-26 00:47:50,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:47:50,601 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-26 00:47:50,601 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-26 00:47:50,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:47:50,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-11-26 00:47:50,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:47:51,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-26 00:47:51,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:47:51,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-26 00:47:51,366 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-26 00:47:51,366 INFO L895 garLoopResultBuilder]: At program point L126(lines 22 127) the Hoare annotation is: false [2022-11-26 00:47:51,366 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-26 00:47:51,366 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-26 00:47:51,367 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-26 00:47:51,367 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-26 00:47:51,367 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-26 00:47:51,367 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-26 00:47:51,368 INFO L895 garLoopResultBuilder]: At program point L53-2(lines 53 125) the Hoare annotation is: (let ((.cse3 (= |ULTIMATE.start_main_~state_17~0#1| |ULTIMATE.start_main_~state_12~0#1|)) (.cse6 (= |ULTIMATE.start_main_~state_8~0#1| |ULTIMATE.start_main_~var_24~0#1|)) (.cse7 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) (.cse0 (= |ULTIMATE.start_main_~var_7~0#1| (_ bv0 8))) (.cse1 (= (_ bv1 8) |ULTIMATE.start_main_~var_24~0#1|)) (.cse2 (= (bvadd |ULTIMATE.start_main_~mask_SORT_1~0#1| (_ bv1 32)) (_ bv0 32))) (.cse4 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_3~0#1|)) (.cse5 (= (_ bv0 8) |ULTIMATE.start_main_~state_14~0#1|))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~state_8~0#1| |ULTIMATE.start_main_~var_7~0#1|) .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse7 (= ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_3~0#1|))) |ULTIMATE.start_main_~state_14~0#1|) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse6 .cse7 .cse0 .cse1 .cse2 .cse4 .cse5))) [2022-11-26 00:47:51,368 INFO L899 garLoopResultBuilder]: For program point L53-3(lines 53 125) no Hoare annotation was computed. [2022-11-26 00:47:51,368 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-26 00:47:51,372 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2022-11-26 00:47:51,374 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:47:51,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:47:51 BoogieIcfgContainer [2022-11-26 00:47:51,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:47:51,390 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:47:51,390 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:47:51,391 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:47:51,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:47:38" (3/4) ... [2022-11-26 00:47:51,394 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-26 00:47:51,405 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-26 00:47:51,405 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-26 00:47:51,406 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-26 00:47:51,454 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:47:51,455 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:47:51,455 INFO L158 Benchmark]: Toolchain (without parser) took 14535.01ms. Allocated memory was 75.5MB in the beginning and 161.5MB in the end (delta: 86.0MB). Free memory was 53.0MB in the beginning and 126.6MB in the end (delta: -73.6MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2022-11-26 00:47:51,456 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 35.2MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:47:51,456 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.54ms. Allocated memory is still 75.5MB. Free memory was 52.8MB in the beginning and 41.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-26 00:47:51,457 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.69ms. Allocated memory is still 75.5MB. Free memory was 40.9MB in the beginning and 39.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:47:51,457 INFO L158 Benchmark]: Boogie Preprocessor took 33.25ms. Allocated memory is still 75.5MB. Free memory was 39.1MB in the beginning and 37.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:47:51,458 INFO L158 Benchmark]: RCFGBuilder took 573.08ms. Allocated memory is still 75.5MB. Free memory was 37.6MB in the beginning and 44.3MB in the end (delta: -6.7MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2022-11-26 00:47:51,458 INFO L158 Benchmark]: TraceAbstraction took 13372.10ms. Allocated memory was 75.5MB in the beginning and 161.5MB in the end (delta: 86.0MB). Free memory was 43.6MB in the beginning and 129.8MB in the end (delta: -86.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:47:51,459 INFO L158 Benchmark]: Witness Printer took 64.79ms. Allocated memory is still 161.5MB. Free memory was 129.8MB in the beginning and 126.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:47:51,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 35.2MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 437.54ms. Allocated memory is still 75.5MB. Free memory was 52.8MB in the beginning and 41.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.69ms. Allocated memory is still 75.5MB. Free memory was 40.9MB in the beginning and 39.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.25ms. Allocated memory is still 75.5MB. Free memory was 39.1MB in the beginning and 37.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 573.08ms. Allocated memory is still 75.5MB. Free memory was 37.6MB in the beginning and 44.3MB in the end (delta: -6.7MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. * TraceAbstraction took 13372.10ms. Allocated memory was 75.5MB in the beginning and 161.5MB in the end (delta: 86.0MB). Free memory was 43.6MB in the beginning and 129.8MB in the end (delta: -86.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 64.79ms. Allocated memory is still 161.5MB. Free memory was 129.8MB in the beginning and 126.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 13.2s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 61 IncrementalHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 11 mSDtfsCounter, 61 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=2, InterpolantAutomatonStates: 20, 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 81 HoareAnnotationTreeSize, 2 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 33 QuantifiedInterpolants, 3601 SizeOfPredicates, 309 NumberOfNonLiveVariables, 903 ConjunctsInSsa, 270 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 11/54 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: 53]: Loop Invariant Derived loop invariant: (((((((var_7 == 0bv8 && 1bv8 == var_24) && state_8 == var_7) && ~bvadd128(mask_SORT_1, 1bv32) == 0bv32) && state_17 == state_12) && 1bv8 == mask_SORT_3) && 0bv8 == state_14) || (((((((state_8 == var_24 && cond == 1bv32) && ~bvand32(1bv32, ~zero_extendFrom8To32(mask_SORT_3))[7:0] == state_14) && var_7 == 0bv8) && 1bv8 == var_24) && ~bvadd128(mask_SORT_1, 1bv32) == 0bv32) && state_17 == state_12) && 1bv8 == mask_SORT_3)) || ((((((state_8 == var_24 && cond == 1bv32) && var_7 == 0bv8) && 1bv8 == var_24) && ~bvadd128(mask_SORT_1, 1bv32) == 0bv32) && 1bv8 == mask_SORT_3) && 0bv8 == state_14) RESULT: Ultimate proved your program to be correct! [2022-11-26 00:47:51,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_483a4ff0-0c03-43df-bb6d-b722ea1f7b44/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE