./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 40a9698cd1f506d6a856b33d872fce85f12f9f3b9fe0d2e800ed6327fc1a6049 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:44:50,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:44:50,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:44:50,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:44:50,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:44:50,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:44:50,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:44:50,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:44:50,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:44:50,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:44:50,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:44:50,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:44:50,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:44:50,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:44:50,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:44:50,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:44:50,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:44:50,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:44:50,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:44:50,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:44:50,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:44:50,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:44:50,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:44:50,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:44:50,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:44:50,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:44:50,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:44:50,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:44:50,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:44:50,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:44:50,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:44:50,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:44:50,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:44:50,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:44:50,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:44:50,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:44:50,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:44:50,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:44:50,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:44:50,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:44:50,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:44:50,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:44:50,583 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:44:50,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:44:50,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:44:50,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:44:50,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:44:50,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:44:50,585 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:44:50,586 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:44:50,586 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:44:50,586 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:44:50,586 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:44:50,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:44:50,587 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:44:50,587 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:44:50,587 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:44:50,588 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:44:50,588 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:44:50,588 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:44:50,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:44:50,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:44:50,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:44:50,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:44:50,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:44:50,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:44:50,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:44:50,591 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:44:50,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:44:50,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:44:50,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:44:50,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:44:50,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:44:50,593 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:44:50,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:44:50,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:44:50,593 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:44:50,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:44:50,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:44:50,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:44:50,595 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_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40a9698cd1f506d6a856b33d872fce85f12f9f3b9fe0d2e800ed6327fc1a6049 [2022-11-23 14:44:50,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:44:50,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:44:50,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:44:50,930 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:44:50,931 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:44:50,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p06.c [2022-11-23 14:44:54,044 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:44:54,347 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:44:54,348 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p06.c [2022-11-23 14:44:54,379 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/data/0e5fc2f0f/031db496e6b7479aae1c477de6d1d377/FLAG1ea07a2ae [2022-11-23 14:44:54,393 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/data/0e5fc2f0f/031db496e6b7479aae1c477de6d1d377 [2022-11-23 14:44:54,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:44:54,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:44:54,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:44:54,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:44:54,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:44:54,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:54" (1/1) ... [2022-11-23 14:44:54,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55374c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:54, skipping insertion in model container [2022-11-23 14:44:54,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:54" (1/1) ... [2022-11-23 14:44:54,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:44:54,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:44:54,624 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_eb77616f-60f4-480c-a2c0-db7ef09047ed/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p06.c[1107,1120] [2022-11-23 14:44:54,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:44:54,895 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:44:54,906 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_eb77616f-60f4-480c-a2c0-db7ef09047ed/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p06.c[1107,1120] [2022-11-23 14:44:55,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:44:55,142 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:44:55,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55 WrapperNode [2022-11-23 14:44:55,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:44:55,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:44:55,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:44:55,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:44:55,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2022-11-23 14:44:55,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2022-11-23 14:44:55,286 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1047 [2022-11-23 14:44:55,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:44:55,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:44:55,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:44:55,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:44:55,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2022-11-23 14:44:55,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2022-11-23 14:44:55,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2022-11-23 14:44:55,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2022-11-23 14:44:55,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2022-11-23 14:44:55,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2022-11-23 14:44:55,344 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2022-11-23 14:44:55,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2022-11-23 14:44:55,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:44:55,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:44:55,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:44:55,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:44:55,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (1/1) ... [2022-11-23 14:44:55,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:44:55,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:44:55,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:44:55,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:44:55,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:44:55,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:44:55,845 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:44:55,847 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:45:15,237 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:45:15,267 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:45:15,267 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:45:15,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:45:15 BoogieIcfgContainer [2022-11-23 14:45:15,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:45:15,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:45:15,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:45:15,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:45:15,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:44:54" (1/3) ... [2022-11-23 14:45:15,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291af171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:45:15, skipping insertion in model container [2022-11-23 14:45:15,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:55" (2/3) ... [2022-11-23 14:45:15,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291af171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:45:15, skipping insertion in model container [2022-11-23 14:45:15,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:45:15" (3/3) ... [2022-11-23 14:45:15,289 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p06.c [2022-11-23 14:45:15,312 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:45:15,312 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:45:15,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:45:15,378 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;@6662a7f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:45:15,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:45:15,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:45:15,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 14:45:15,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:15,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 14:45:15,394 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:15,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:15,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-23 14:45:15,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:15,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095716428] [2022-11-23 14:45:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:15,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:45:15,765 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:45:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:45:15,993 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:45:15,994 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:45:15,996 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:45:15,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:45:16,003 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 14:45:16,007 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:45:16,046 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 14:45:16,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:45:16 BoogieIcfgContainer [2022-11-23 14:45:16,063 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:45:16,064 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:45:16,065 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:45:16,065 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:45:16,066 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:45:15" (3/4) ... [2022-11-23 14:45:16,070 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:45:16,070 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:45:16,073 INFO L158 Benchmark]: Toolchain (without parser) took 21675.01ms. Allocated memory was 180.4MB in the beginning and 562.0MB in the end (delta: 381.7MB). Free memory was 149.5MB in the beginning and 333.1MB in the end (delta: -183.6MB). Peak memory consumption was 198.6MB. Max. memory is 16.1GB. [2022-11-23 14:45:16,073 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 121.6MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:45:16,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 744.34ms. Allocated memory is still 180.4MB. Free memory was 149.0MB in the beginning and 112.9MB in the end (delta: 36.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-23 14:45:16,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 143.53ms. Allocated memory is still 180.4MB. Free memory was 112.9MB in the beginning and 101.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:45:16,076 INFO L158 Benchmark]: Boogie Preprocessor took 126.53ms. Allocated memory is still 180.4MB. Free memory was 101.9MB in the beginning and 145.9MB in the end (delta: -44.0MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2022-11-23 14:45:16,081 INFO L158 Benchmark]: RCFGBuilder took 19855.70ms. Allocated memory was 180.4MB in the beginning and 562.0MB in the end (delta: 381.7MB). Free memory was 145.9MB in the beginning and 378.2MB in the end (delta: -232.3MB). Peak memory consumption was 344.3MB. Max. memory is 16.1GB. [2022-11-23 14:45:16,083 INFO L158 Benchmark]: TraceAbstraction took 790.62ms. Allocated memory is still 562.0MB. Free memory was 377.1MB in the beginning and 333.1MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2022-11-23 14:45:16,083 INFO L158 Benchmark]: Witness Printer took 6.55ms. Allocated memory is still 562.0MB. Free memory is still 333.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:45:16,091 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 121.6MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 744.34ms. Allocated memory is still 180.4MB. Free memory was 149.0MB in the beginning and 112.9MB in the end (delta: 36.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 143.53ms. Allocated memory is still 180.4MB. Free memory was 112.9MB in the beginning and 101.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 126.53ms. Allocated memory is still 180.4MB. Free memory was 101.9MB in the beginning and 145.9MB in the end (delta: -44.0MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * RCFGBuilder took 19855.70ms. Allocated memory was 180.4MB in the beginning and 562.0MB in the end (delta: 381.7MB). Free memory was 145.9MB in the beginning and 378.2MB in the end (delta: -232.3MB). Peak memory consumption was 344.3MB. Max. memory is 16.1GB. * TraceAbstraction took 790.62ms. Allocated memory is still 562.0MB. Free memory was 377.1MB in the beginning and 333.1MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Witness Printer took 6.55ms. Allocated memory is still 562.0MB. Free memory is still 333.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 157, overapproximation of bitwiseOr at line 165, overapproximation of bitwiseAnd at line 147. 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_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 5); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (5 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 12); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (12 - 1); [L34] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 3); [L35] const SORT_10 msb_SORT_10 = (SORT_10)1 << (3 - 1); [L37] const SORT_80 mask_SORT_80 = (SORT_80)-1 >> (sizeof(SORT_80) * 8 - 32); [L38] const SORT_80 msb_SORT_80 = (SORT_80)1 << (32 - 1); [L40] const SORT_99 mask_SORT_99 = (SORT_99)-1 >> (sizeof(SORT_99) * 8 - 4); [L41] const SORT_99 msb_SORT_99 = (SORT_99)1 << (4 - 1); [L43] const SORT_176 mask_SORT_176 = (SORT_176)-1 >> (sizeof(SORT_176) * 8 - 2); [L44] const SORT_176 msb_SORT_176 = (SORT_176)1 << (2 - 1); [L46] const SORT_5 var_7 = 0; [L47] const SORT_10 var_12 = 2; [L48] const SORT_10 var_14 = 0; [L49] const SORT_1 var_20 = 0; [L50] const SORT_3 var_24 = 0; [L51] const SORT_1 var_35 = 1; [L52] const SORT_10 var_59 = 1; [L53] const SORT_10 var_64 = 4; [L54] const SORT_10 var_66 = 5; [L55] const SORT_10 var_70 = 3; [L56] const SORT_80 var_82 = 0; [L57] const SORT_10 var_116 = 7; [L58] const SORT_10 var_121 = 6; [L59] const SORT_3 var_162 = 2; [L60] const SORT_3 var_185 = 31; [L62] SORT_1 input_2; [L63] SORT_3 input_4; [L64] SORT_5 input_6; [L65] SORT_3 input_173; [L66] SORT_3 input_174; [L67] SORT_3 input_175; [L68] SORT_3 input_184; [L69] SORT_3 input_194; [L70] SORT_3 input_195; [L71] SORT_3 input_196; [L72] SORT_3 input_199; [L73] SORT_3 input_218; [L74] SORT_3 input_219; [L75] SORT_3 input_220; [L76] SORT_3 input_223; [L77] SORT_3 input_225; [L78] SORT_176 input_239; [L79] SORT_176 input_240; [L80] SORT_176 input_241; [L82] SORT_5 state_8 = __VERIFIER_nondet_ushort() & mask_SORT_5; [L83] SORT_10 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L84] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_3 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L86] SORT_3 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L87] SORT_3 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L88] SORT_3 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L89] SORT_3 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L90] SORT_3 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L91] SORT_3 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L92] SORT_3 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L93] SORT_3 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L94] SORT_3 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L96] SORT_5 init_9_arg_1 = var_7; [L97] state_8 = init_9_arg_1 [L98] SORT_10 init_16_arg_1 = var_14; [L99] state_15 = init_16_arg_1 [L100] SORT_1 init_22_arg_1 = var_20; [L101] state_21 = init_22_arg_1 [L102] SORT_3 init_26_arg_1 = var_24; [L103] state_25 = init_26_arg_1 [L104] SORT_3 init_40_arg_1 = var_24; [L105] state_39 = init_40_arg_1 [L106] SORT_3 init_42_arg_1 = var_24; [L107] state_41 = init_42_arg_1 [L108] SORT_3 init_44_arg_1 = var_24; [L109] state_43 = init_44_arg_1 [L110] SORT_3 init_46_arg_1 = var_24; [L111] state_45 = init_46_arg_1 [L112] SORT_3 init_48_arg_1 = var_24; [L113] state_47 = init_48_arg_1 [L114] SORT_3 init_50_arg_1 = var_24; [L115] state_49 = init_50_arg_1 [L116] SORT_3 init_52_arg_1 = var_24; [L117] state_51 = init_52_arg_1 [L118] SORT_3 init_54_arg_1 = var_24; [L119] state_53 = init_54_arg_1 [L120] SORT_3 init_56_arg_1 = var_24; [L121] state_55 = init_56_arg_1 VAL [init_16_arg_1=0, init_22_arg_1=0, init_26_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=7, mask_SORT_176=3, mask_SORT_3=31, mask_SORT_5=4095, mask_SORT_80=4294967295, mask_SORT_99=15, msb_SORT_1=1, msb_SORT_10=4, msb_SORT_176=2, msb_SORT_3=16, msb_SORT_5=2048, msb_SORT_80=2147483648, msb_SORT_99=8, state_15=0, state_21=0, state_25=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_8=0, var_116=7, var_12=2, var_121=6, var_14=0, var_162=2, var_185=31, var_20=0, var_24=0, var_35=1, var_59=1, var_64=4, var_66=5, var_7=0, var_70=3, var_82=0] [L124] input_2 = __VERIFIER_nondet_uchar() [L125] input_4 = __VERIFIER_nondet_uchar() [L126] input_6 = __VERIFIER_nondet_ushort() [L127] input_173 = __VERIFIER_nondet_uchar() [L128] input_174 = __VERIFIER_nondet_uchar() [L129] input_175 = __VERIFIER_nondet_uchar() [L130] input_184 = __VERIFIER_nondet_uchar() [L131] input_194 = __VERIFIER_nondet_uchar() [L132] input_195 = __VERIFIER_nondet_uchar() [L133] input_196 = __VERIFIER_nondet_uchar() [L134] input_199 = __VERIFIER_nondet_uchar() [L135] input_218 = __VERIFIER_nondet_uchar() [L136] input_219 = __VERIFIER_nondet_uchar() [L137] input_220 = __VERIFIER_nondet_uchar() [L138] input_223 = __VERIFIER_nondet_uchar() [L139] input_225 = __VERIFIER_nondet_uchar() [L140] input_239 = __VERIFIER_nondet_uchar() [L141] input_240 = __VERIFIER_nondet_uchar() [L142] input_241 = __VERIFIER_nondet_uchar() [L145] SORT_5 var_11_arg_0 = state_8; [L146] SORT_10 var_11 = var_11_arg_0 >> 9; [L147] var_11 = var_11 & mask_SORT_10 [L148] SORT_10 var_13_arg_0 = var_11; [L149] SORT_10 var_13_arg_1 = var_12; [L150] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L151] SORT_10 var_17_arg_0 = state_15; [L152] SORT_1 var_17 = var_17_arg_0 >> 2; [L153] SORT_1 var_18_arg_0 = var_13; [L154] SORT_1 var_18_arg_1 = var_17; [L155] SORT_1 var_18 = var_18_arg_0 & var_18_arg_1; [L156] SORT_1 var_19_arg_0 = var_18; [L157] SORT_1 var_19 = ~var_19_arg_0; [L158] SORT_1 var_23_arg_0 = state_21; [L159] SORT_1 var_23 = ~var_23_arg_0; [L160] SORT_3 var_27_arg_0 = state_25; [L161] SORT_3 var_27_arg_1 = var_24; [L162] SORT_1 var_27 = var_27_arg_0 == var_27_arg_1; [L163] SORT_1 var_28_arg_0 = var_23; [L164] SORT_1 var_28_arg_1 = var_27; [L165] SORT_1 var_28 = var_28_arg_0 | var_28_arg_1; [L166] SORT_3 var_29_arg_0 = state_25; [L167] SORT_3 var_29_arg_1 = var_24; [L168] SORT_1 var_29 = var_29_arg_0 != var_29_arg_1; [L169] SORT_1 var_30_arg_0 = var_29; [L170] SORT_1 var_30_arg_1 = state_21; [L171] SORT_1 var_30 = var_30_arg_0 | var_30_arg_1; [L172] SORT_1 var_31_arg_0 = var_28; [L173] SORT_1 var_31_arg_1 = var_30; [L174] SORT_1 var_31 = var_31_arg_0 & var_31_arg_1; [L175] SORT_1 var_32_arg_0 = var_19; [L176] SORT_1 var_32_arg_1 = var_31; [L177] SORT_1 var_32 = var_32_arg_0 | var_32_arg_1; [L178] SORT_1 var_36_arg_0 = var_32; [L179] SORT_1 var_36 = ~var_36_arg_0; [L180] SORT_1 var_37_arg_0 = var_35; [L181] SORT_1 var_37_arg_1 = var_36; [L182] SORT_1 var_37 = var_37_arg_0 & var_37_arg_1; [L183] var_37 = var_37 & mask_SORT_1 [L184] SORT_1 bad_38_arg_0 = var_37; [L185] CALL __VERIFIER_assert(!(bad_38_arg_0)) [L20] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L20] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 14:45:16,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 40a9698cd1f506d6a856b33d872fce85f12f9f3b9fe0d2e800ed6327fc1a6049 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:45:18,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:45:18,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:45:18,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:45:18,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:45:18,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:45:18,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:45:18,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:45:18,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:45:18,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:45:18,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:45:18,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:45:18,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:45:18,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:45:18,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:45:18,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:45:18,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:45:18,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:45:18,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:45:18,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:45:18,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:45:18,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:45:18,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:45:18,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:45:18,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:45:18,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:45:18,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:45:18,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:45:18,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:45:18,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:45:18,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:45:18,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:45:18,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:45:18,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:45:18,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:45:18,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:45:18,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:45:18,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:45:18,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:45:18,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:45:18,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:45:18,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-23 14:45:18,817 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:45:18,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:45:18,819 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:45:18,820 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:45:18,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:45:18,821 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:45:18,821 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:45:18,821 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:45:18,822 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:45:18,822 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:45:18,823 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:45:18,823 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:45:18,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:45:18,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:45:18,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:45:18,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:45:18,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:45:18,826 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:45:18,826 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:45:18,826 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:45:18,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:45:18,827 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:45:18,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:45:18,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:45:18,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:45:18,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:45:18,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:45:18,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:45:18,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:45:18,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:45:18,829 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:45:18,830 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:45:18,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:45:18,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:45:18,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:45:18,831 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_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40a9698cd1f506d6a856b33d872fce85f12f9f3b9fe0d2e800ed6327fc1a6049 [2022-11-23 14:45:19,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:45:19,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:45:19,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:45:19,305 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:45:19,306 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:45:19,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p06.c [2022-11-23 14:45:22,466 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:45:22,850 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:45:22,854 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p06.c [2022-11-23 14:45:22,870 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/data/37f08f387/32ecb05dccca4bf5afcb9220800e6503/FLAG612b88af6 [2022-11-23 14:45:22,890 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/data/37f08f387/32ecb05dccca4bf5afcb9220800e6503 [2022-11-23 14:45:22,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:45:22,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:45:22,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:45:22,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:45:22,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:45:22,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:45:22" (1/1) ... [2022-11-23 14:45:22,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5914919f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:22, skipping insertion in model container [2022-11-23 14:45:22,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:45:22" (1/1) ... [2022-11-23 14:45:22,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:45:22,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:45:23,129 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_eb77616f-60f4-480c-a2c0-db7ef09047ed/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p06.c[1107,1120] [2022-11-23 14:45:23,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:45:23,481 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:45:23,491 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_eb77616f-60f4-480c-a2c0-db7ef09047ed/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p06.c[1107,1120] [2022-11-23 14:45:23,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:45:23,638 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:45:23,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:23 WrapperNode [2022-11-23 14:45:23,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:45:23,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:45:23,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:45:23,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:45:23,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:23" (1/1) ... [2022-11-23 14:45:23,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:23" (1/1) ... [2022-11-23 14:45:23,777 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1047 [2022-11-23 14:45:23,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:45:23,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:45:23,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:45:23,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:45:23,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:23" (1/1) ... [2022-11-23 14:45:23,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:23" (1/1) ... [2022-11-23 14:45:23,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:23" (1/1) ... [2022-11-23 14:45:23,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:23" (1/1) ... [2022-11-23 14:45:23,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:23" (1/1) ... [2022-11-23 14:45:23,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:23" (1/1) ... [2022-11-23 14:45:23,869 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:23" (1/1) ... [2022-11-23 14:45:23,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:23" (1/1) ... [2022-11-23 14:45:23,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:45:23,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:45:23,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:45:23,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:45:23,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:23" (1/1) ... [2022-11-23 14:45:23,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:45:23,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:23,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:45:23,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:45:23,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:45:23,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:45:24,394 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:45:24,396 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:45:25,800 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:45:25,807 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:45:25,807 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:45:25,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:45:25 BoogieIcfgContainer [2022-11-23 14:45:25,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:45:25,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:45:25,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:45:25,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:45:25,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:45:22" (1/3) ... [2022-11-23 14:45:25,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c00c322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:45:25, skipping insertion in model container [2022-11-23 14:45:25,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:45:23" (2/3) ... [2022-11-23 14:45:25,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c00c322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:45:25, skipping insertion in model container [2022-11-23 14:45:25,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:45:25" (3/3) ... [2022-11-23 14:45:25,818 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p06.c [2022-11-23 14:45:25,846 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:45:25,847 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:45:25,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:45:25,914 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;@4d6886fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:45:25,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:45:25,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:45:25,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 14:45:25,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:25,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 14:45:25,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:25,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:25,939 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-23 14:45:25,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:45:25,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225138745] [2022-11-23 14:45:25,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:25,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:45:25,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:45:25,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:45:25,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 14:45:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:26,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 14:45:26,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:26,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:45:26,460 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:45:26,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225138745] [2022-11-23 14:45:26,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225138745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:26,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:45:26,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:45:26,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104576302] [2022-11-23 14:45:26,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:26,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:45:26,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:45:26,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:45:26,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:45:26,501 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:45:26,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:26,692 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-23 14:45:26,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:45:26,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 14:45:26,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:26,703 INFO L225 Difference]: With dead ends: 20 [2022-11-23 14:45:26,703 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 14:45:26,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:45:26,712 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:26,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:45:26,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 14:45:26,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-23 14:45:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:45:26,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 14:45:26,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 14:45:26,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:26,756 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 14:45:26,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:45:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 14:45:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:45:26,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:26,757 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 14:45:26,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:26,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:45:26,969 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:26,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:26,970 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-23 14:45:26,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:45:26,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737088904] [2022-11-23 14:45:26,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:26,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:45:26,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:45:26,975 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:45:27,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 14:45:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:27,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-23 14:45:27,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:27,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:45:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:28,179 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:45:28,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737088904] [2022-11-23 14:45:28,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737088904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:45:28,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [352422837] [2022-11-23 14:45:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:28,185 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:45:28,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:45:28,190 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:45:28,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-23 14:45:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:29,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-23 14:45:29,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:29,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:45:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:29,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [352422837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:45:29,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399899826] [2022-11-23 14:45:29,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:29,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:29,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:29,730 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:29,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:45:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:30,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-23 14:45:30,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:30,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:45:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:30,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399899826] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:45:30,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:45:30,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 5, 6, 6] total 12 [2022-11-23 14:45:30,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992560050] [2022-11-23 14:45:30,752 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:45:30,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:45:30,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:45:30,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:45:30,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:45:30,755 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:45:31,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:31,502 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-23 14:45:31,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:45:31,505 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 14:45:31,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:31,506 INFO L225 Difference]: With dead ends: 19 [2022-11-23 14:45:31,506 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 14:45:31,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:45:31,508 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 18 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:31,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 23 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:45:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 14:45:31,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-23 14:45:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:45:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-23 14:45:31,515 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-23 14:45:31,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:31,515 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-23 14:45:31,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:45:31,516 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-23 14:45:31,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 14:45:31,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:31,516 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-23 14:45:31,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:31,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:31,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:32,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:45:32,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:32,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:32,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-11-23 14:45:32,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:45:32,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095434173] [2022-11-23 14:45:32,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:45:32,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:45:32,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:45:32,124 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:45:32,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 14:45:33,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:45:33,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:45:33,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-23 14:45:33,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:33,815 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:33,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:45:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:35,483 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:45:35,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095434173] [2022-11-23 14:45:35,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095434173] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:45:35,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1315208453] [2022-11-23 14:45:35,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:45:35,484 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:45:35,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:45:35,487 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:45:35,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-23 14:45:37,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:45:37,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:45:37,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-23 14:45:37,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:38,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:45:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:39,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1315208453] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:45:39,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681998663] [2022-11-23 14:45:39,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:45:39,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:39,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:39,827 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:39,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 14:45:40,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:45:40,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:45:40,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-23 14:45:40,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:41,368 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:41,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:45:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:42,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681998663] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:45:42,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:45:42,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 23 [2022-11-23 14:45:42,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064233641] [2022-11-23 14:45:42,462 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:45:42,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 14:45:42,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:45:42,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 14:45:42,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-11-23 14:45:42,463 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:45:43,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:43,695 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-23 14:45:43,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:45:43,696 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 14:45:43,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:43,697 INFO L225 Difference]: With dead ends: 22 [2022-11-23 14:45:43,697 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 14:45:43,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2022-11-23 14:45:43,699 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:43,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 45 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 14:45:43,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 14:45:43,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-23 14:45:43,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 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) [2022-11-23 14:45:43,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-23 14:45:43,705 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-23 14:45:43,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:43,706 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-23 14:45:43,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:45:43,706 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-23 14:45:43,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:45:43,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:43,707 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-23 14:45:43,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:43,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:44,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-23 14:45:44,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:45:44,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:44,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:44,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-11-23 14:45:44,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:45:44,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593169600] [2022-11-23 14:45:44,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:45:44,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:45:44,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:45:44,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:45:44,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb77616f-60f4-480c-a2c0-db7ef09047ed/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 14:45:45,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 14:45:45,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:45:45,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 3559 conjuncts, 221 conjunts are in the unsatisfiable core [2022-11-23 14:45:45,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:55,634 INFO L328 TraceCheckSpWp]: Computing backward predicates...