./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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_e4ae967a-4a41-4e1d-9eae-33a053425a87/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 59f3fcefe82932d9599ddaeb009b9f6bf8c17f6b22b4de4159cfdd4dc66707c2 --- 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 00:45:32,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:45:32,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:45:32,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:45:32,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:45:32,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:45:32,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:45:32,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:45:32,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:45:32,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:45:32,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:45:32,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:45:32,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:45:32,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:45:32,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:45:32,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:45:32,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:45:32,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:45:32,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:45:32,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:45:32,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:45:32,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:45:32,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:45:32,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:45:32,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:45:32,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:45:32,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:45:32,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:45:32,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:45:32,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:45:32,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:45:32,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:45:32,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:45:32,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:45:32,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:45:32,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:45:32,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:45:32,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:45:32,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:45:32,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:45:32,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:45:32,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:45:32,648 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:45:32,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:45:32,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:45:32,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:45:32,649 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:45:32,650 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:45:32,650 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:45:32,650 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:45:32,650 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:45:32,650 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:45:32,651 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:45:32,651 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:45:32,651 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:45:32,651 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:45:32,652 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:45:32,652 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:45:32,652 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:45:32,652 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:45:32,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:45:32,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:45:32,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:45:32,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:45:32,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:45:32,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:45:32,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:45:32,655 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:45:32,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:45:32,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:45:32,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:45:32,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:45:32,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:45:32,656 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:45:32,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:45:32,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:45:32,657 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:45:32,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:45:32,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:45:32,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:45:32,658 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_e4ae967a-4a41-4e1d-9eae-33a053425a87/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59f3fcefe82932d9599ddaeb009b9f6bf8c17f6b22b4de4159cfdd4dc66707c2 [2022-11-26 00:45:32,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:45:33,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:45:33,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:45:33,012 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:45:33,012 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:45:33,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c [2022-11-26 00:45:36,199 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:45:36,456 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:45:36,457 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c [2022-11-26 00:45:36,463 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/data/669ed084a/2955dc6dd4bc4d18b00008e5da738bcc/FLAG9db145b08 [2022-11-26 00:45:36,802 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/data/669ed084a/2955dc6dd4bc4d18b00008e5da738bcc [2022-11-26 00:45:36,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:45:36,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:45:36,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:45:36,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:45:36,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:45:36,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:45:36" (1/1) ... [2022-11-26 00:45:36,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64bb5842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:36, skipping insertion in model container [2022-11-26 00:45:36,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:45:36" (1/1) ... [2022-11-26 00:45:36,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:45:36,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:45:37,053 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_e4ae967a-4a41-4e1d-9eae-33a053425a87/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c[1107,1120] [2022-11-26 00:45:37,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:45:37,090 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:45:37,103 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_e4ae967a-4a41-4e1d-9eae-33a053425a87/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c[1107,1120] [2022-11-26 00:45:37,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:45:37,136 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:45:37,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:37 WrapperNode [2022-11-26 00:45:37,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:45:37,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:45:37,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:45:37,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:45:37,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:37" (1/1) ... [2022-11-26 00:45:37,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:37" (1/1) ... [2022-11-26 00:45:37,174 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-11-26 00:45:37,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:45:37,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:45:37,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:45:37,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:45:37,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:37" (1/1) ... [2022-11-26 00:45:37,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:37" (1/1) ... [2022-11-26 00:45:37,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:37" (1/1) ... [2022-11-26 00:45:37,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:37" (1/1) ... [2022-11-26 00:45:37,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:37" (1/1) ... [2022-11-26 00:45:37,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:37" (1/1) ... [2022-11-26 00:45:37,200 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:37" (1/1) ... [2022-11-26 00:45:37,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:37" (1/1) ... [2022-11-26 00:45:37,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:45:37,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:45:37,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:45:37,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:45:37,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:37" (1/1) ... [2022-11-26 00:45:37,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:45:37,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:45:37,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:45:37,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:45:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:45:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:45:37,383 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:45:37,385 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:45:37,569 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:45:37,590 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:45:37,591 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:45:37,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:45:37 BoogieIcfgContainer [2022-11-26 00:45:37,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:45:37,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:45:37,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:45:37,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:45:37,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:45:36" (1/3) ... [2022-11-26 00:45:37,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b76f4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:45:37, skipping insertion in model container [2022-11-26 00:45:37,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:37" (2/3) ... [2022-11-26 00:45:37,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b76f4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:45:37, skipping insertion in model container [2022-11-26 00:45:37,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:45:37" (3/3) ... [2022-11-26 00:45:37,604 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.swap_two.c [2022-11-26 00:45:37,625 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:45:37,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:45:37,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:45:37,678 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;@1a08e511, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:45:37,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:45:37,683 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 00:45:37,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:45:37,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:45:37,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:45:37,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:45:37,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:45:37,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-26 00:45:37,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:45:37,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993288058] [2022-11-26 00:45:37,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:45:37,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:45:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:45:37,899 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:45:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:45:38,007 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:45:38,009 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:45:38,011 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:45:38,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:45:38,019 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:45:38,024 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:45:38,042 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:45:38,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:45:38 BoogieIcfgContainer [2022-11-26 00:45:38,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:45:38,051 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:45:38,051 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:45:38,051 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:45:38,051 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:45:37" (3/4) ... [2022-11-26 00:45:38,055 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:45:38,055 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:45:38,057 INFO L158 Benchmark]: Toolchain (without parser) took 1245.58ms. Allocated memory is still 172.0MB. Free memory was 137.0MB in the beginning and 99.9MB in the end (delta: 37.2MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2022-11-26 00:45:38,057 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 130.0MB. Free memory is still 97.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:45:38,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.97ms. Allocated memory is still 172.0MB. Free memory was 137.0MB in the beginning and 138.7MB in the end (delta: -1.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-26 00:45:38,059 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.27ms. Allocated memory is still 172.0MB. Free memory was 138.7MB in the beginning and 136.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:45:38,059 INFO L158 Benchmark]: Boogie Preprocessor took 27.78ms. Allocated memory is still 172.0MB. Free memory was 136.6MB in the beginning and 135.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:45:38,060 INFO L158 Benchmark]: RCFGBuilder took 389.36ms. Allocated memory is still 172.0MB. Free memory was 135.5MB in the beginning and 121.9MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-26 00:45:38,061 INFO L158 Benchmark]: TraceAbstraction took 453.22ms. Allocated memory is still 172.0MB. Free memory was 120.9MB in the beginning and 99.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-26 00:45:38,061 INFO L158 Benchmark]: Witness Printer took 5.05ms. Allocated memory is still 172.0MB. Free memory is still 99.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:45:38,064 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 130.0MB. Free memory is still 97.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.97ms. Allocated memory is still 172.0MB. Free memory was 137.0MB in the beginning and 138.7MB in the end (delta: -1.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.27ms. Allocated memory is still 172.0MB. Free memory was 138.7MB in the beginning and 136.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.78ms. Allocated memory is still 172.0MB. Free memory was 136.6MB in the beginning and 135.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 389.36ms. Allocated memory is still 172.0MB. Free memory was 135.5MB in the beginning and 121.9MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 453.22ms. Allocated memory is still 172.0MB. Free memory was 120.9MB in the beginning and 99.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 5.05ms. Allocated memory is still 172.0MB. Free memory is still 99.9MB. 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 72, overapproximation of bitwiseOr at line 70, overapproximation of bitwiseAnd at line 57. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 20); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (20 - 1); [L31] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 32); [L32] const SORT_8 msb_SORT_8 = (SORT_8)1 << (32 - 1); [L34] const SORT_4 var_5 = 100; [L35] const SORT_8 var_10 = 100; [L36] const SORT_8 var_13 = 200; [L37] const SORT_1 var_18 = 1; [L38] const SORT_4 var_22 = 200; [L40] SORT_1 input_2; [L41] SORT_1 input_3; [L43] SORT_4 state_6 = __VERIFIER_nondet_uint() & mask_SORT_4; [L44] SORT_4 state_23 = __VERIFIER_nondet_uint() & mask_SORT_4; [L46] SORT_4 init_7_arg_1 = var_5; [L47] state_6 = init_7_arg_1 [L48] SORT_4 init_24_arg_1 = var_22; [L49] state_23 = init_24_arg_1 VAL [init_24_arg_1=200, init_7_arg_1=100, mask_SORT_1=1, mask_SORT_4=4294967295, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_23=200, state_6=100, var_10=100, var_13=200, var_18=1, var_22=200, var_5=100] [L52] input_2 = __VERIFIER_nondet_uchar() [L53] input_3 = __VERIFIER_nondet_uchar() [L56] SORT_4 var_9_arg_0 = state_6; [L57] var_9_arg_0 = var_9_arg_0 & mask_SORT_4 [L58] SORT_8 var_9 = var_9_arg_0; [L59] SORT_8 var_11_arg_0 = var_9; [L60] SORT_8 var_11_arg_1 = var_10; [L61] SORT_1 var_11 = var_11_arg_0 == var_11_arg_1; [L62] SORT_4 var_12_arg_0 = state_6; [L63] var_12_arg_0 = var_12_arg_0 & mask_SORT_4 [L64] SORT_8 var_12 = var_12_arg_0; [L65] SORT_8 var_14_arg_0 = var_12; [L66] SORT_8 var_14_arg_1 = var_13; [L67] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L68] SORT_1 var_15_arg_0 = var_11; [L69] SORT_1 var_15_arg_1 = var_14; [L70] SORT_1 var_15 = var_15_arg_0 | var_15_arg_1; [L71] SORT_1 var_19_arg_0 = var_15; [L72] SORT_1 var_19 = ~var_19_arg_0; [L73] SORT_1 var_20_arg_0 = var_18; [L74] SORT_1 var_20_arg_1 = var_19; [L75] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L76] var_20 = var_20 & mask_SORT_1 [L77] SORT_1 bad_21_arg_0 = var_20; [L78] CALL __VERIFIER_assert(!(bad_21_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: 0.4s, 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, 0.1s 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 00:45:38,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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_e4ae967a-4a41-4e1d-9eae-33a053425a87/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 59f3fcefe82932d9599ddaeb009b9f6bf8c17f6b22b4de4159cfdd4dc66707c2 --- 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 00:45:40,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:45:40,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:45:40,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:45:40,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:45:40,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:45:40,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:45:40,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:45:40,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:45:40,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:45:40,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:45:40,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:45:40,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:45:40,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:45:40,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:45:40,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:45:40,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:45:40,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:45:40,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:45:41,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:45:41,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:45:41,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:45:41,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:45:41,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:45:41,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:45:41,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:45:41,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:45:41,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:45:41,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:45:41,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:45:41,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:45:41,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:45:41,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:45:41,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:45:41,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:45:41,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:45:41,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:45:41,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:45:41,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:45:41,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:45:41,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:45:41,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-26 00:45:41,084 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:45:41,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:45:41,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:45:41,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:45:41,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:45:41,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:45:41,086 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:45:41,086 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:45:41,086 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:45:41,087 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:45:41,087 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:45:41,087 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:45:41,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:45:41,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:45:41,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:45:41,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:45:41,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:45:41,089 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:45:41,089 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:45:41,090 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:45:41,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:45:41,090 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:45:41,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:45:41,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:45:41,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:45:41,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:45:41,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:45:41,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:45:41,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:45:41,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:45:41,092 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:45:41,092 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:45:41,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:45:41,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:45:41,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:45:41,093 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_e4ae967a-4a41-4e1d-9eae-33a053425a87/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59f3fcefe82932d9599ddaeb009b9f6bf8c17f6b22b4de4159cfdd4dc66707c2 [2022-11-26 00:45:41,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:45:41,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:45:41,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:45:41,560 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:45:41,563 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:45:41,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c [2022-11-26 00:45:45,137 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:45:45,361 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:45:45,362 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c [2022-11-26 00:45:45,374 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/data/b34c6e5ae/8f11f3ec8f3541eea995b47a0dbc044c/FLAGbcc352291 [2022-11-26 00:45:45,405 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/data/b34c6e5ae/8f11f3ec8f3541eea995b47a0dbc044c [2022-11-26 00:45:45,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:45:45,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:45:45,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:45:45,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:45:45,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:45:45,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:45:45" (1/1) ... [2022-11-26 00:45:45,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f9f71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:45, skipping insertion in model container [2022-11-26 00:45:45,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:45:45" (1/1) ... [2022-11-26 00:45:45,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:45:45,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:45:45,613 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_e4ae967a-4a41-4e1d-9eae-33a053425a87/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c[1107,1120] [2022-11-26 00:45:45,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:45:45,660 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:45:45,672 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_e4ae967a-4a41-4e1d-9eae-33a053425a87/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_two.c[1107,1120] [2022-11-26 00:45:45,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:45:45,703 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:45:45,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:45 WrapperNode [2022-11-26 00:45:45,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:45:45,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:45:45,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:45:45,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:45:45,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:45" (1/1) ... [2022-11-26 00:45:45,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:45" (1/1) ... [2022-11-26 00:45:45,770 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-11-26 00:45:45,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:45:45,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:45:45,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:45:45,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:45:45,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:45" (1/1) ... [2022-11-26 00:45:45,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:45" (1/1) ... [2022-11-26 00:45:45,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:45" (1/1) ... [2022-11-26 00:45:45,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:45" (1/1) ... [2022-11-26 00:45:45,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:45" (1/1) ... [2022-11-26 00:45:45,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:45" (1/1) ... [2022-11-26 00:45:45,811 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:45" (1/1) ... [2022-11-26 00:45:45,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:45" (1/1) ... [2022-11-26 00:45:45,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:45:45,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:45:45,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:45:45,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:45:45,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:45" (1/1) ... [2022-11-26 00:45:45,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:45:45,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:45:45,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:45:45,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:45:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:45:45,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:45:46,028 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:45:46,030 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:45:46,210 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:45:46,217 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:45:46,218 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:45:46,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:45:46 BoogieIcfgContainer [2022-11-26 00:45:46,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:45:46,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:45:46,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:45:46,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:45:46,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:45:45" (1/3) ... [2022-11-26 00:45:46,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2f7254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:45:46, skipping insertion in model container [2022-11-26 00:45:46,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:45:45" (2/3) ... [2022-11-26 00:45:46,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2f7254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:45:46, skipping insertion in model container [2022-11-26 00:45:46,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:45:46" (3/3) ... [2022-11-26 00:45:46,230 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.swap_two.c [2022-11-26 00:45:46,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:45:46,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:45:46,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:45:46,327 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;@354d9767, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:45:46,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:45:46,332 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 00:45:46,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:45:46,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:45:46,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:45:46,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:45:46,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:45:46,350 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-26 00:45:46,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:45:46,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648833901] [2022-11-26 00:45:46,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:45:46,369 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 00:45:46,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:45:46,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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 00:45:46,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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 00:45:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:45:46,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-26 00:45:46,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:45:46,935 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 00:45:46,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:45:46,936 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:45:46,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648833901] [2022-11-26 00:45:46,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648833901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:45:46,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:45:46,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:45:46,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409309329] [2022-11-26 00:45:46,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:45:46,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:45:46,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:45:46,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:45:46,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:45:46,999 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 00:45:47,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:45:47,083 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-26 00:45:47,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:45:47,087 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 00:45:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:45:47,095 INFO L225 Difference]: With dead ends: 20 [2022-11-26 00:45:47,095 INFO L226 Difference]: Without dead ends: 11 [2022-11-26 00:45:47,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:45:47,105 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 00:45:47,106 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 00:45:47,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-26 00:45:47,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-26 00:45:47,141 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 00:45:47,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 00:45:47,143 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-26 00:45:47,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:45:47,145 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 00:45:47,145 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 00:45:47,145 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 00:45:47,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:45:47,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:45:47,146 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:45:47,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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)] Forceful destruction successful, exit code 0 [2022-11-26 00:45:47,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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 00:45:47,358 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:45:47,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:45:47,359 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-26 00:45:47,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:45:47,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529378107] [2022-11-26 00:45:47,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:45:47,360 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 00:45:47,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:45:47,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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 00:45:47,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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 00:45:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:45:47,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-26 00:45:47,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:45:47,644 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 00:45:47,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:45:47,992 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 00:45:47,993 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:45:47,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529378107] [2022-11-26 00:45:47,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529378107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:45:47,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1581587681] [2022-11-26 00:45:47,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:45:47,994 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:45:47,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:45:48,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:45:48,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-26 00:45:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:45:48,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-26 00:45:48,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:45:48,266 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 00:45:48,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:45:48,426 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 00:45:48,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1581587681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:45:48,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645047216] [2022-11-26 00:45:48,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:45:48,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:45:48,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:45:48,439 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:45:48,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:45:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:45:48,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-26 00:45:48,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:45:48,676 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 00:45:48,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:45:48,920 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 00:45:48,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645047216] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:45:48,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:45:48,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-26 00:45:48,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417267338] [2022-11-26 00:45:48,923 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:45:48,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:45:48,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:45:48,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:45:48,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:45:48,926 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 00:45:49,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:45:49,072 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-26 00:45:49,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:45:49,073 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 00:45:49,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:45:49,074 INFO L225 Difference]: With dead ends: 14 [2022-11-26 00:45:49,074 INFO L226 Difference]: Without dead ends: 12 [2022-11-26 00:45:49,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:45:49,076 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:45:49,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 14 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:45:49,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-26 00:45:49,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-26 00:45:49,081 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 00:45:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-26 00:45:49,081 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-26 00:45:49,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:45:49,084 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-26 00:45:49,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 00:45:49,084 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-26 00:45:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:45:49,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:45:49,085 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-26 00:45:49,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:45:49,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:45:49,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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)] Ended with exit code 0 [2022-11-26 00:45:49,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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 00:45:49,689 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:45:49,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:45:49,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-26 00:45:49,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:45:49,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695390667] [2022-11-26 00:45:49,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:45:49,691 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 00:45:49,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:45:49,693 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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 00:45:49,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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 00:45:49,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:45:49,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:45:49,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-26 00:45:49,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:45:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:45:49,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:45:50,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:45:50,354 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:45:50,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695390667] [2022-11-26 00:45:50,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695390667] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:45:50,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1605734314] [2022-11-26 00:45:50,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:45:50,356 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:45:50,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:45:50,358 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:45:50,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-26 00:45:50,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:45:50,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:45:50,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-26 00:45:50,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:45:50,666 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:45:50,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:45:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:45:50,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1605734314] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:45:50,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501293407] [2022-11-26 00:45:50,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:45:50,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:45:50,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:45:50,875 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:45:50,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:45:50,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:45:50,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:45:50,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-26 00:45:50,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:45:51,082 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:45:51,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:45:51,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:45:51,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501293407] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:45:51,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:45:51,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-11-26 00:45:51,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665358636] [2022-11-26 00:45:51,264 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:45:51,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:45:51,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:45:51,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:45:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:45:51,271 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 00:45:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:45:51,429 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-11-26 00:45:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:45:51,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 00:45:51,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:45:51,430 INFO L225 Difference]: With dead ends: 12 [2022-11-26 00:45:51,430 INFO L226 Difference]: Without dead ends: 0 [2022-11-26 00:45:51,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:45:51,432 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:45:51,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 10 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:45:51,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-26 00:45:51,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-26 00:45:51,434 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 00:45:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-26 00:45:51,434 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-11-26 00:45:51,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:45:51,435 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-26 00:45:51,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 00:45:51,435 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-26 00:45:51,435 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-26 00:45:51,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:45:51,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-26 00:45:51,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-26 00:45:51,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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)] Ended with exit code 0 [2022-11-26 00:45:52,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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 00:45:52,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-26 00:45:52,154 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-26 00:45:52,155 INFO L895 garLoopResultBuilder]: At program point L50-2(lines 50 85) the Hoare annotation is: (let ((.cse0 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse1 (= (_ bv200 32) |ULTIMATE.start_main_~var_13~0#1|)) (.cse2 (= (_ bv100 32) |ULTIMATE.start_main_~var_10~0#1|)) (.cse3 (= (_ bv1048575 32) |ULTIMATE.start_main_~mask_SORT_4~0#1|))) (or (and .cse0 .cse1 .cse2 (= (_ bv100 32) |ULTIMATE.start_main_~state_6~0#1|) .cse3 (= (_ bv200 32) |ULTIMATE.start_main_~state_23~0#1|)) (and .cse0 (= (_ bv200 32) |ULTIMATE.start_main_~state_6~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse1 .cse2 .cse3 (= (_ bv100 32) |ULTIMATE.start_main_~state_23~0#1|)))) [2022-11-26 00:45:52,155 INFO L899 garLoopResultBuilder]: For program point L50-3(lines 50 85) no Hoare annotation was computed. [2022-11-26 00:45:52,155 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-26 00:45:52,155 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-26 00:45:52,155 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-26 00:45:52,155 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-26 00:45:52,156 INFO L895 garLoopResultBuilder]: At program point L86(lines 22 87) the Hoare annotation is: false [2022-11-26 00:45:52,156 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-26 00:45:52,156 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-26 00:45:52,156 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-26 00:45:52,160 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2022-11-26 00:45:52,163 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:45:52,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:45:52 BoogieIcfgContainer [2022-11-26 00:45:52,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:45:52,179 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:45:52,179 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:45:52,179 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:45:52,179 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:45:46" (3/4) ... [2022-11-26 00:45:52,183 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-26 00:45:52,195 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-26 00:45:52,195 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-26 00:45:52,195 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-26 00:45:52,235 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:45:52,236 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:45:52,236 INFO L158 Benchmark]: Toolchain (without parser) took 6824.14ms. Allocated memory was 75.5MB in the beginning and 119.5MB in the end (delta: 44.0MB). Free memory was 29.6MB in the beginning and 86.6MB in the end (delta: -56.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:45:52,237 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 75.5MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:45:52,237 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.64ms. Allocated memory is still 75.5MB. Free memory was 29.4MB in the beginning and 49.4MB in the end (delta: -20.0MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2022-11-26 00:45:52,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.29ms. Allocated memory is still 75.5MB. Free memory was 49.1MB in the beginning and 47.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:45:52,238 INFO L158 Benchmark]: Boogie Preprocessor took 46.76ms. Allocated memory is still 75.5MB. Free memory was 47.7MB in the beginning and 46.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:45:52,238 INFO L158 Benchmark]: RCFGBuilder took 399.43ms. Allocated memory is still 75.5MB. Free memory was 46.5MB in the beginning and 35.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-26 00:45:52,239 INFO L158 Benchmark]: TraceAbstraction took 5955.61ms. Allocated memory was 75.5MB in the beginning and 119.5MB in the end (delta: 44.0MB). Free memory was 35.1MB in the beginning and 89.7MB in the end (delta: -54.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:45:52,239 INFO L158 Benchmark]: Witness Printer took 57.21ms. Allocated memory is still 119.5MB. Free memory was 89.7MB in the beginning and 86.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:45:52,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 75.5MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.64ms. Allocated memory is still 75.5MB. Free memory was 29.4MB in the beginning and 49.4MB in the end (delta: -20.0MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.29ms. Allocated memory is still 75.5MB. Free memory was 49.1MB in the beginning and 47.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.76ms. Allocated memory is still 75.5MB. Free memory was 47.7MB in the beginning and 46.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 399.43ms. Allocated memory is still 75.5MB. Free memory was 46.5MB in the beginning and 35.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5955.61ms. Allocated memory was 75.5MB in the beginning and 119.5MB in the end (delta: 44.0MB). Free memory was 35.1MB in the beginning and 89.7MB in the end (delta: -54.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 57.21ms. Allocated memory is still 119.5MB. Free memory was 89.7MB in the beginning and 86.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 11 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=2, InterpolantAutomatonStates: 19, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 43 HoareAnnotationTreeSize, 2 FomulaSimplifications, 4 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 22 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 33 QuantifiedInterpolants, 2141 SizeOfPredicates, 159 NumberOfNonLiveVariables, 553 ConjunctsInSsa, 168 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 6/54 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: 50]: Loop Invariant Derived loop invariant: (((((1bv8 == mask_SORT_1 && 200bv32 == var_13) && 100bv32 == var_10) && 100bv32 == state_6) && 1048575bv32 == mask_SORT_4) && 200bv32 == state_23) || ((((((1bv8 == mask_SORT_1 && 200bv32 == state_6) && cond == 1bv32) && 200bv32 == var_13) && 100bv32 == var_10) && 1048575bv32 == mask_SORT_4) && 100bv32 == state_23) RESULT: Ultimate proved your program to be correct! [2022-11-26 00:45:52,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ae967a-4a41-4e1d-9eae-33a053425a87/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