./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cd89032489cba73cfad07d869c8cd52bb6dfeb92075f997edf46a57f8d65328b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 01:03:16,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:03:16,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:03:16,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:03:16,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:03:16,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:03:16,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:03:16,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:03:16,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:03:16,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:03:16,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:03:16,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:03:16,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:03:16,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:03:16,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:03:16,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:03:16,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:03:16,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:03:16,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:03:16,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:03:16,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:03:16,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:03:16,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:03:16,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:03:16,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:03:16,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:03:16,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:03:16,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:03:16,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:03:16,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:03:16,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:03:16,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:03:16,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:03:16,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:03:16,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:03:16,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:03:16,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:03:16,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:03:16,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:03:16,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:03:16,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:03:16,573 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 01:03:16,619 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:03:16,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:03:16,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:03:16,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:03:16,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:03:16,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:03:16,621 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:03:16,622 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:03:16,622 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:03:16,622 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:03:16,623 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:03:16,624 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:03:16,624 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:03:16,624 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:03:16,624 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:03:16,625 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:03:16,625 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:03:16,625 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:03:16,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:03:16,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:03:16,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:03:16,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:03:16,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:03:16,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:03:16,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:03:16,628 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:03:16,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:03:16,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:03:16,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:03:16,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:03:16,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:03:16,630 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:03:16,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:03:16,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:03:16,631 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:03:16,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:03:16,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:03:16,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:03:16,632 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_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd89032489cba73cfad07d869c8cd52bb6dfeb92075f997edf46a57f8d65328b [2022-11-26 01:03:16,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:03:16,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:03:16,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:03:16,981 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:03:16,981 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:03:16,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-11-26 01:03:20,041 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:03:20,435 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:03:20,436 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-11-26 01:03:20,457 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/data/5e473e4c6/80f230a31feb47629b10a617cfec1079/FLAGe1f6dfac6 [2022-11-26 01:03:20,472 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/data/5e473e4c6/80f230a31feb47629b10a617cfec1079 [2022-11-26 01:03:20,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:03:20,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:03:20,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:03:20,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:03:20,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:03:20,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:03:20" (1/1) ... [2022-11-26 01:03:20,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af6c210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:20, skipping insertion in model container [2022-11-26 01:03:20,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:03:20" (1/1) ... [2022-11-26 01:03:20,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:03:20,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:03:20,784 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_ad62140d-866a-4dec-a537-cec2a2274a65/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c[1107,1120] [2022-11-26 01:03:21,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:03:21,298 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:03:21,311 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_ad62140d-866a-4dec-a537-cec2a2274a65/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c[1107,1120] [2022-11-26 01:03:21,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:03:21,576 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:03:21,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:21 WrapperNode [2022-11-26 01:03:21,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:03:21,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:03:21,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:03:21,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:03:21,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:21" (1/1) ... [2022-11-26 01:03:21,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:21" (1/1) ... [2022-11-26 01:03:21,771 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1774 [2022-11-26 01:03:21,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:03:21,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:03:21,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:03:21,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:03:21,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:21" (1/1) ... [2022-11-26 01:03:21,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:21" (1/1) ... [2022-11-26 01:03:21,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:21" (1/1) ... [2022-11-26 01:03:21,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:21" (1/1) ... [2022-11-26 01:03:21,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:21" (1/1) ... [2022-11-26 01:03:21,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:21" (1/1) ... [2022-11-26 01:03:21,883 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:21" (1/1) ... [2022-11-26 01:03:21,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:21" (1/1) ... [2022-11-26 01:03:22,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:03:22,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:03:22,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:03:22,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:03:22,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:21" (1/1) ... [2022-11-26 01:03:22,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:03:22,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:03:22,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:03:22,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:03:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:03:22,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:03:22,591 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:03:22,593 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:05:47,480 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:05:47,543 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:05:47,546 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 01:05:47,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:05:47 BoogieIcfgContainer [2022-11-26 01:05:47,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:05:47,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:05:47,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:05:47,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:05:47,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:03:20" (1/3) ... [2022-11-26 01:05:47,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8cd2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:05:47, skipping insertion in model container [2022-11-26 01:05:47,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:03:21" (2/3) ... [2022-11-26 01:05:47,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8cd2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:05:47, skipping insertion in model container [2022-11-26 01:05:47,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:05:47" (3/3) ... [2022-11-26 01:05:47,564 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-11-26 01:05:47,587 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:05:47,587 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 01:05:47,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:05:47,669 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;@5b76ee12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:05:47,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 01:05:47,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:05:47,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:05:47,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:05:47,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:05:47,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:05:47,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:05:47,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-26 01:05:47,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:05:47,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563291868] [2022-11-26 01:05:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:05:47,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:05:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:05:47,948 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 01:05:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:05:48,080 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 01:05:48,082 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 01:05:48,084 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 01:05:48,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:05:48,092 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 01:05:48,097 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 01:05:48,142 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 01:05:48,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 01:05:48 BoogieIcfgContainer [2022-11-26 01:05:48,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 01:05:48,171 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 01:05:48,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 01:05:48,173 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 01:05:48,174 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:05:47" (3/4) ... [2022-11-26 01:05:48,178 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 01:05:48,178 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 01:05:48,179 INFO L158 Benchmark]: Toolchain (without parser) took 147702.38ms. Allocated memory was 178.3MB in the beginning and 853.5MB in the end (delta: 675.3MB). Free memory was 143.3MB in the beginning and 339.7MB in the end (delta: -196.4MB). Peak memory consumption was 477.6MB. Max. memory is 16.1GB. [2022-11-26 01:05:48,180 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 130.0MB. Free memory is still 100.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:05:48,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1099.48ms. Allocated memory is still 178.3MB. Free memory was 143.3MB in the beginning and 101.8MB in the end (delta: 41.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-26 01:05:48,181 INFO L158 Benchmark]: Boogie Procedure Inliner took 192.86ms. Allocated memory is still 178.3MB. Free memory was 100.9MB in the beginning and 82.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-26 01:05:48,182 INFO L158 Benchmark]: Boogie Preprocessor took 229.14ms. Allocated memory is still 178.3MB. Free memory was 82.1MB in the beginning and 132.2MB in the end (delta: -50.2MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2022-11-26 01:05:48,183 INFO L158 Benchmark]: RCFGBuilder took 145548.10ms. Allocated memory was 178.3MB in the beginning and 853.5MB in the end (delta: 675.3MB). Free memory was 132.2MB in the beginning and 377.5MB in the end (delta: -245.3MB). Peak memory consumption was 525.0MB. Max. memory is 16.1GB. [2022-11-26 01:05:48,183 INFO L158 Benchmark]: TraceAbstraction took 617.62ms. Allocated memory is still 853.5MB. Free memory was 377.5MB in the beginning and 340.8MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-26 01:05:48,184 INFO L158 Benchmark]: Witness Printer took 7.39ms. Allocated memory is still 853.5MB. Free memory was 340.8MB in the beginning and 339.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:05:48,187 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 130.0MB. Free memory is still 100.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1099.48ms. Allocated memory is still 178.3MB. Free memory was 143.3MB in the beginning and 101.8MB in the end (delta: 41.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 192.86ms. Allocated memory is still 178.3MB. Free memory was 100.9MB in the beginning and 82.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 229.14ms. Allocated memory is still 178.3MB. Free memory was 82.1MB in the beginning and 132.2MB in the end (delta: -50.2MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. * RCFGBuilder took 145548.10ms. Allocated memory was 178.3MB in the beginning and 853.5MB in the end (delta: 675.3MB). Free memory was 132.2MB in the beginning and 377.5MB in the end (delta: -245.3MB). Peak memory consumption was 525.0MB. Max. memory is 16.1GB. * TraceAbstraction took 617.62ms. Allocated memory is still 853.5MB. Free memory was 377.5MB in the beginning and 340.8MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 7.39ms. Allocated memory is still 853.5MB. Free memory was 340.8MB in the beginning and 339.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 183, overapproximation of bitwiseAnd at line 190. 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 - 16); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (16 - 1); [L31] const SORT_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 12); [L32] const SORT_6 msb_SORT_6 = (SORT_6)1 << (12 - 1); [L34] const SORT_45 mask_SORT_45 = (SORT_45)-1 >> (sizeof(SORT_45) * 8 - 3); [L35] const SORT_45 msb_SORT_45 = (SORT_45)1 << (3 - 1); [L37] const SORT_87 mask_SORT_87 = (SORT_87)-1 >> (sizeof(SORT_87) * 8 - 17); [L38] const SORT_87 msb_SORT_87 = (SORT_87)1 << (17 - 1); [L40] const SORT_88 mask_SORT_88 = (SORT_88)-1 >> (sizeof(SORT_88) * 8 - 5); [L41] const SORT_88 msb_SORT_88 = (SORT_88)1 << (5 - 1); [L43] const SORT_91 mask_SORT_91 = (SORT_91)-1 >> (sizeof(SORT_91) * 8 - 9); [L44] const SORT_91 msb_SORT_91 = (SORT_91)1 << (9 - 1); [L46] const SORT_93 mask_SORT_93 = (SORT_93)-1 >> (sizeof(SORT_93) * 8 - 10); [L47] const SORT_93 msb_SORT_93 = (SORT_93)1 << (10 - 1); [L49] const SORT_96 mask_SORT_96 = (SORT_96)-1 >> (sizeof(SORT_96) * 8 - 11); [L50] const SORT_96 msb_SORT_96 = (SORT_96)1 << (11 - 1); [L52] const SORT_101 mask_SORT_101 = (SORT_101)-1 >> (sizeof(SORT_101) * 8 - 13); [L53] const SORT_101 msb_SORT_101 = (SORT_101)1 << (13 - 1); [L55] const SORT_104 mask_SORT_104 = (SORT_104)-1 >> (sizeof(SORT_104) * 8 - 14); [L56] const SORT_104 msb_SORT_104 = (SORT_104)1 << (14 - 1); [L58] const SORT_107 mask_SORT_107 = (SORT_107)-1 >> (sizeof(SORT_107) * 8 - 15); [L59] const SORT_107 msb_SORT_107 = (SORT_107)1 << (15 - 1); [L61] const SORT_140 mask_SORT_140 = (SORT_140)-1 >> (sizeof(SORT_140) * 8 - 7); [L62] const SORT_140 msb_SORT_140 = (SORT_140)1 << (7 - 1); [L64] const SORT_200 mask_SORT_200 = (SORT_200)-1 >> (sizeof(SORT_200) * 8 - 2); [L65] const SORT_200 msb_SORT_200 = (SORT_200)1 << (2 - 1); [L67] const SORT_359 mask_SORT_359 = (SORT_359)-1 >> (sizeof(SORT_359) * 8 - 4); [L68] const SORT_359 msb_SORT_359 = (SORT_359)1 << (4 - 1); [L70] const SORT_362 mask_SORT_362 = (SORT_362)-1 >> (sizeof(SORT_362) * 8 - 6); [L71] const SORT_362 msb_SORT_362 = (SORT_362)1 << (6 - 1); [L73] const SORT_365 mask_SORT_365 = (SORT_365)-1 >> (sizeof(SORT_365) * 8 - 8); [L74] const SORT_365 msb_SORT_365 = (SORT_365)1 << (8 - 1); [L76] const SORT_6 var_7 = 0; [L77] const SORT_1 var_19 = 1; [L78] const SORT_3 var_23 = 0; [L79] const SORT_1 var_30 = 0; [L80] const SORT_45 var_46 = 0; [L81] const SORT_45 var_50 = 2; [L82] const SORT_45 var_54 = 1; [L83] const SORT_45 var_59 = 4; [L84] const SORT_45 var_61 = 5; [L85] const SORT_45 var_65 = 3; [L86] const SORT_6 var_74 = 2; [L87] const SORT_88 var_89 = 0; [L88] const SORT_140 var_142 = 5; [L89] const SORT_140 var_146 = 4; [L90] const SORT_140 var_150 = 3; [L91] const SORT_140 var_154 = 2; [L92] const SORT_140 var_158 = 1; [L93] const SORT_140 var_162 = 0; [L94] const SORT_200 var_202 = 0; [L95] const SORT_3 var_209 = 65535; [L97] SORT_1 input_2; [L98] SORT_3 input_4; [L99] SORT_3 input_5; [L100] SORT_3 input_197; [L101] SORT_3 input_198; [L102] SORT_3 input_199; [L103] SORT_3 input_208; [L104] SORT_3 input_217; [L105] SORT_3 input_218; [L106] SORT_3 input_219; [L107] SORT_3 input_222; [L108] SORT_3 input_240; [L109] SORT_3 input_241; [L110] SORT_3 input_242; [L111] SORT_3 input_245; [L112] SORT_3 input_247; [L113] SORT_200 input_261; [L114] SORT_200 input_262; [L115] SORT_200 input_263; [L117] SORT_6 state_8 = __VERIFIER_nondet_ushort() & mask_SORT_6; [L118] SORT_6 state_12 = __VERIFIER_nondet_ushort() & mask_SORT_6; [L119] SORT_3 state_24 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L120] SORT_3 state_26 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L121] SORT_3 state_28 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L122] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] SORT_3 state_33 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L124] SORT_3 state_35 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L125] SORT_3 state_37 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L126] SORT_3 state_39 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L127] SORT_3 state_41 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L128] SORT_3 state_43 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L129] SORT_45 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_45; [L131] SORT_6 init_9_arg_1 = var_7; [L132] state_8 = init_9_arg_1 [L133] SORT_6 init_13_arg_1 = var_7; [L134] state_12 = init_13_arg_1 [L135] SORT_3 init_25_arg_1 = var_23; [L136] state_24 = init_25_arg_1 [L137] SORT_3 init_27_arg_1 = var_23; [L138] state_26 = init_27_arg_1 [L139] SORT_3 init_29_arg_1 = var_23; [L140] state_28 = init_29_arg_1 [L141] SORT_1 init_32_arg_1 = var_30; [L142] state_31 = init_32_arg_1 [L143] SORT_3 init_34_arg_1 = var_23; [L144] state_33 = init_34_arg_1 [L145] SORT_3 init_36_arg_1 = var_23; [L146] state_35 = init_36_arg_1 [L147] SORT_3 init_38_arg_1 = var_23; [L148] state_37 = init_38_arg_1 [L149] SORT_3 init_40_arg_1 = var_23; [L150] state_39 = init_40_arg_1 [L151] SORT_3 init_42_arg_1 = var_23; [L152] state_41 = init_42_arg_1 [L153] SORT_3 init_44_arg_1 = var_23; [L154] state_43 = init_44_arg_1 [L155] SORT_45 init_48_arg_1 = var_46; [L156] state_47 = init_48_arg_1 VAL [init_13_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_48_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_101=8191, mask_SORT_104=16383, mask_SORT_107=32767, mask_SORT_140=127, mask_SORT_200=3, mask_SORT_3=65535, mask_SORT_359=15, mask_SORT_362=63, mask_SORT_365=255, mask_SORT_45=7, mask_SORT_6=4095, mask_SORT_87=4294967295, mask_SORT_88=31, mask_SORT_91=511, mask_SORT_93=1023, mask_SORT_96=2047, msb_SORT_1=1, msb_SORT_101=4096, msb_SORT_104=8192, msb_SORT_107=16384, msb_SORT_140=64, msb_SORT_200=2, msb_SORT_3=32768, msb_SORT_359=8, msb_SORT_362=32, msb_SORT_365=128, msb_SORT_45=4, msb_SORT_6=2048, msb_SORT_87=65536, msb_SORT_88=16, msb_SORT_91=256, msb_SORT_93=512, msb_SORT_96=1024, state_12=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_47=0, state_8=0, var_142=5, var_146=4, var_150=3, var_154=2, var_158=1, var_162=0, var_19=1, var_202=0, var_209=65535, var_23=0, var_30=0, var_46=0, var_50=2, var_54=1, var_59=4, var_61=5, var_65=3, var_7=0, var_74=2, var_89=0] [L159] input_2 = __VERIFIER_nondet_uchar() [L160] input_4 = __VERIFIER_nondet_ushort() [L161] input_5 = __VERIFIER_nondet_ushort() [L162] input_197 = __VERIFIER_nondet_ushort() [L163] input_198 = __VERIFIER_nondet_ushort() [L164] input_199 = __VERIFIER_nondet_ushort() [L165] input_208 = __VERIFIER_nondet_ushort() [L166] input_217 = __VERIFIER_nondet_ushort() [L167] input_218 = __VERIFIER_nondet_ushort() [L168] input_219 = __VERIFIER_nondet_ushort() [L169] input_222 = __VERIFIER_nondet_ushort() [L170] input_240 = __VERIFIER_nondet_ushort() [L171] input_241 = __VERIFIER_nondet_ushort() [L172] input_242 = __VERIFIER_nondet_ushort() [L173] input_245 = __VERIFIER_nondet_ushort() [L174] input_247 = __VERIFIER_nondet_ushort() [L175] input_261 = __VERIFIER_nondet_uchar() [L176] input_262 = __VERIFIER_nondet_uchar() [L177] input_263 = __VERIFIER_nondet_uchar() [L180] SORT_6 var_10_arg_0 = state_8; [L181] SORT_1 var_10 = var_10_arg_0 >> 0; [L182] SORT_1 var_11_arg_0 = var_10; [L183] SORT_1 var_11 = ~var_11_arg_0; [L184] SORT_6 var_14_arg_0 = state_12; [L185] SORT_1 var_14 = var_14_arg_0 >> 0; [L186] SORT_1 var_15_arg_0 = var_14; [L187] SORT_1 var_15 = ~var_15_arg_0; [L188] SORT_1 var_16_arg_0 = var_11; [L189] SORT_1 var_16_arg_1 = var_15; [L190] SORT_1 var_16 = var_16_arg_0 & var_16_arg_1; [L191] SORT_1 var_20_arg_0 = var_16; [L192] SORT_1 var_20 = ~var_20_arg_0; [L193] SORT_1 var_21_arg_0 = var_19; [L194] SORT_1 var_21_arg_1 = var_20; [L195] SORT_1 var_21 = var_21_arg_0 & var_21_arg_1; [L196] var_21 = var_21 & mask_SORT_1 [L197] SORT_1 bad_22_arg_0 = var_21; [L198] CALL __VERIFIER_assert(!(bad_22_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 01:05:48,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cd89032489cba73cfad07d869c8cd52bb6dfeb92075f997edf46a57f8d65328b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 01:05:50,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:05:50,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:05:51,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:05:51,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:05:51,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:05:51,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:05:51,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:05:51,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:05:51,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:05:51,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:05:51,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:05:51,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:05:51,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:05:51,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:05:51,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:05:51,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:05:51,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:05:51,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:05:51,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:05:51,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:05:51,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:05:51,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:05:51,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:05:51,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:05:51,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:05:51,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:05:51,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:05:51,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:05:51,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:05:51,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:05:51,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:05:51,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:05:51,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:05:51,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:05:51,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:05:51,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:05:51,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:05:51,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:05:51,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:05:51,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:05:51,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-26 01:05:51,161 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:05:51,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:05:51,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:05:51,164 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:05:51,165 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:05:51,165 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:05:51,165 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:05:51,166 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:05:51,166 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:05:51,166 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:05:51,167 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:05:51,168 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:05:51,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:05:51,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:05:51,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:05:51,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:05:51,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:05:51,170 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 01:05:51,170 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 01:05:51,171 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 01:05:51,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:05:51,171 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:05:51,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:05:51,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:05:51,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 01:05:51,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:05:51,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:05:51,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:05:51,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:05:51,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:05:51,174 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 01:05:51,174 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 01:05:51,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:05:51,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:05:51,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 01:05:51,175 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_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd89032489cba73cfad07d869c8cd52bb6dfeb92075f997edf46a57f8d65328b [2022-11-26 01:05:51,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:05:51,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:05:51,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:05:51,724 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:05:51,725 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:05:51,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-11-26 01:05:55,235 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:05:55,694 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:05:55,694 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-11-26 01:05:55,715 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/data/46ad98cf3/7b175f4671224da085ae3c19d55ee386/FLAG994b50dcc [2022-11-26 01:05:55,741 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/data/46ad98cf3/7b175f4671224da085ae3c19d55ee386 [2022-11-26 01:05:55,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:05:55,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:05:55,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:05:55,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:05:55,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:05:55,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:05:55" (1/1) ... [2022-11-26 01:05:55,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd142be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:55, skipping insertion in model container [2022-11-26 01:05:55,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:05:55" (1/1) ... [2022-11-26 01:05:55,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:05:55,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:05:56,069 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_ad62140d-866a-4dec-a537-cec2a2274a65/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c[1107,1120] [2022-11-26 01:05:56,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:05:56,504 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:05:56,519 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_ad62140d-866a-4dec-a537-cec2a2274a65/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p1.c[1107,1120] [2022-11-26 01:05:56,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:05:56,693 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:05:56,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:56 WrapperNode [2022-11-26 01:05:56,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:05:56,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:05:56,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:05:56,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:05:56,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:56" (1/1) ... [2022-11-26 01:05:56,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:56" (1/1) ... [2022-11-26 01:05:56,900 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1774 [2022-11-26 01:05:56,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:05:56,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:05:56,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:05:56,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:05:56,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:56" (1/1) ... [2022-11-26 01:05:56,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:56" (1/1) ... [2022-11-26 01:05:56,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:56" (1/1) ... [2022-11-26 01:05:56,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:56" (1/1) ... [2022-11-26 01:05:57,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:56" (1/1) ... [2022-11-26 01:05:57,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:56" (1/1) ... [2022-11-26 01:05:57,062 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:56" (1/1) ... [2022-11-26 01:05:57,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:56" (1/1) ... [2022-11-26 01:05:57,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:05:57,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:05:57,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:05:57,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:05:57,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:56" (1/1) ... [2022-11-26 01:05:57,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:05:57,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:05:57,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:05:57,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:05:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:05:57,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:05:57,819 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:05:57,822 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:06:01,789 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:06:01,797 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:06:01,797 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 01:06:01,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:06:01 BoogieIcfgContainer [2022-11-26 01:06:01,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:06:01,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:06:01,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:06:01,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:06:01,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:05:55" (1/3) ... [2022-11-26 01:06:01,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39345418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:06:01, skipping insertion in model container [2022-11-26 01:06:01,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:56" (2/3) ... [2022-11-26 01:06:01,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39345418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:06:01, skipping insertion in model container [2022-11-26 01:06:01,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:06:01" (3/3) ... [2022-11-26 01:06:01,813 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p1.c [2022-11-26 01:06:01,835 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:06:01,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 01:06:01,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:06:01,911 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;@7a5fbce4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:06:01,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 01:06:01,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:06:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 01:06:01,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:06:01,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 01:06:01,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:06:01,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:06:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-26 01:06:01,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:06:01,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112091630] [2022-11-26 01:06:01,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:06:01,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:06:01,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:06:01,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 01:06:02,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 01:06:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:06:02,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-26 01:06:02,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:06:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:06:02,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:06:02,590 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:06:02,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112091630] [2022-11-26 01:06:02,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112091630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:06:02,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:06:02,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 01:06:02,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634841493] [2022-11-26 01:06:02,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:06:02,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 01:06:02,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:06:02,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 01:06:02,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:06:02,635 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:06:02,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:06:02,968 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-26 01:06:02,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 01:06:02,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 01:06:02,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:06:02,979 INFO L225 Difference]: With dead ends: 20 [2022-11-26 01:06:02,979 INFO L226 Difference]: Without dead ends: 11 [2022-11-26 01:06:02,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 01:06:02,986 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:06:02,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 01:06:03,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-26 01:06:03,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-26 01:06:03,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:06:03,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 01:06:03,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-26 01:06:03,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:06:03,020 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 01:06:03,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:06:03,021 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 01:06:03,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 01:06:03,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:06:03,022 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-26 01:06:03,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-26 01:06:03,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:06:03,245 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:06:03,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:06:03,247 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-26 01:06:03,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:06:03,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059037903] [2022-11-26 01:06:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:06:03,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:06:03,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:06:03,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 01:06:03,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-26 01:06:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:06:04,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-26 01:06:04,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:06:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:06:04,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:06:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:06:05,729 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:06:05,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059037903] [2022-11-26 01:06:05,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059037903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:06:05,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1050769390] [2022-11-26 01:06:05,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:06:05,736 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 01:06:05,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 01:06:05,765 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 01:06:05,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-26 01:06:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:06:07,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-26 01:06:07,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:06:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:06:08,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:06:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:06:13,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1050769390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:06:13,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404367469] [2022-11-26 01:06:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:06:13,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:06:13,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:06:13,115 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:06:13,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 01:06:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:06:13,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-26 01:06:14,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:06:14,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:06:14,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:06:22,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:06:22,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404367469] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:06:22,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 01:06:22,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 14 [2022-11-26 01:06:22,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153386768] [2022-11-26 01:06:22,734 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 01:06:22,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-26 01:06:22,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:06:22,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-26 01:06:22,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=126, Unknown=5, NotChecked=0, Total=182 [2022-11-26 01:06:22,737 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:06:23,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:06:23,527 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-26 01:06:23,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 01:06:23,528 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 01:06:23,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:06:23,529 INFO L225 Difference]: With dead ends: 16 [2022-11-26 01:06:23,529 INFO L226 Difference]: Without dead ends: 14 [2022-11-26 01:06:23,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=84, Invalid=183, Unknown=5, NotChecked=0, Total=272 [2022-11-26 01:06:23,531 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 01:06:23,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 25 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 01:06:23,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-26 01:06:23,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-26 01:06:23,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:06:23,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-26 01:06:23,536 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-26 01:06:23,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:06:23,536 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-26 01:06:23,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:06:23,537 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-26 01:06:23,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 01:06:23,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:06:23,538 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-26 01:06:23,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-26 01:06:23,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-26 01:06:23,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 01:06:24,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:06:24,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:06:24,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:06:24,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-26 01:06:24,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:06:24,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699368540] [2022-11-26 01:06:24,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 01:06:24,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:06:24,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:06:24,147 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 01:06:24,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-26 01:06:25,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 01:06:25,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:06:25,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-26 01:06:25,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:06:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:06:26,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:07:01,650 WARN L233 SmtUtils]: Spent 32.02s on a formula simplification. DAG size of input: 271 DAG size of output: 206 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:07:01,873 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:01,873 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 01:07:01,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699368540] [2022-11-26 01:07:01,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699368540] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:07:01,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1954084599] [2022-11-26 01:07:01,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 01:07:01,874 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 01:07:01,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 01:07:01,879 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 01:07:01,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-26 01:07:04,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 01:07:04,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:07:04,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-26 01:07:04,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:07:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:05,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:07:49,051 WARN L233 SmtUtils]: Spent 35.88s on a formula simplification. DAG size of input: 271 DAG size of output: 209 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:07:49,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:49,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1954084599] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:07:49,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535414239] [2022-11-26 01:07:49,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 01:07:49,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:07:49,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:07:49,362 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:07:49,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 01:07:50,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 01:07:50,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:07:50,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-26 01:07:50,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:07:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:51,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:08:18,956 WARN L233 SmtUtils]: Spent 16.06s on a formula simplification. DAG size of input: 130 DAG size of output: 129 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:08:40,429 WARN L233 SmtUtils]: Spent 9.05s on a formula simplification that was a NOOP. DAG size: 164 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:08:58,136 WARN L233 SmtUtils]: Spent 13.36s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:08:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:08:58,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535414239] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:08:58,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 01:08:58,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 9, 9] total 24 [2022-11-26 01:08:58,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8957286] [2022-11-26 01:08:58,288 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 01:08:58,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-26 01:08:58,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 01:08:58,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-26 01:08:58,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=455, Unknown=16, NotChecked=0, Total=552 [2022-11-26 01:08:58,296 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:09:13,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-26 01:09:15,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-26 01:09:17,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-26 01:09:19,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-26 01:09:21,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-26 01:09:23,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-26 01:09:25,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-26 01:10:07,268 WARN L233 SmtUtils]: Spent 33.04s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:10:09,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-26 01:10:09,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:10:09,284 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-11-26 01:10:09,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 01:10:09,285 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-26 01:10:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:10:09,286 INFO L225 Difference]: With dead ends: 22 [2022-11-26 01:10:09,286 INFO L226 Difference]: Without dead ends: 20 [2022-11-26 01:10:09,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 195.7s TimeCoverageRelationStatistics Valid=153, Invalid=692, Unknown=25, NotChecked=0, Total=870 [2022-11-26 01:10:09,288 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 29 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 12 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:10:09,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 42 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 72 Invalid, 8 Unknown, 0 Unchecked, 18.3s Time] [2022-11-26 01:10:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-26 01:10:09,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-26 01:10:09,294 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) [2022-11-26 01:10:09,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-26 01:10:09,295 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2022-11-26 01:10:09,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:10:09,295 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-26 01:10:09,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:10:09,296 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-26 01:10:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-26 01:10:09,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:10:09,297 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-26 01:10:09,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-26 01:10:09,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-26 01:10:09,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-11-26 01:10:09,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-26 01:10:09,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:10:09,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:10:09,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-11-26 01:10:09,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:10:09,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176217873] [2022-11-26 01:10:09,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:10:09,914 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 01:10:09,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:10:09,915 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 01:10:09,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad62140d-866a-4dec-a537-cec2a2274a65/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-26 01:10:12,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-26 01:10:12,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:10:12,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 5971 conjuncts, 178 conjunts are in the unsatisfiable core [2022-11-26 01:10:12,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:10:25,984 WARN L233 SmtUtils]: Spent 7.34s on a formula simplification. DAG size of input: 328 DAG size of output: 230 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:10:34,903 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 01:10:34,903 INFO L328 TraceCheckSpWp]: Computing backward predicates...