./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.hanoi.1.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.hanoi.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 356d4a12962a540140ebba68874ce6eceea0c4ac73970f06eb56d210b432d6ba --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:30:41,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:30:41,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:30:41,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:30:41,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:30:41,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:30:41,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:30:41,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:30:41,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:30:41,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:30:41,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:30:41,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:30:41,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:30:41,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:30:41,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:30:41,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:30:41,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:30:41,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:30:41,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:30:41,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:30:41,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:30:41,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:30:41,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:30:41,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:30:41,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:30:41,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:30:41,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:30:41,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:30:41,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:30:41,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:30:41,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:30:41,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:30:41,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:30:41,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:30:41,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:30:41,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:30:41,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:30:41,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:30:41,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:30:41,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:30:41,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:30:41,505 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:30:41,531 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:30:41,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:30:41,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:30:41,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:30:41,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:30:41,533 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:30:41,533 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:30:41,533 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:30:41,533 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:30:41,533 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:30:41,534 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:30:41,534 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:30:41,534 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:30:41,534 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:30:41,534 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:30:41,535 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:30:41,535 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:30:41,535 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:30:41,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:30:41,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:30:41,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:30:41,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:30:41,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:30:41,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:30:41,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:30:41,537 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:30:41,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:30:41,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:30:41,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:30:41,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:30:41,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:30:41,539 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:30:41,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:30:41,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:30:41,539 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:30:41,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:30:41,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:30:41,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:30:41,540 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_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 356d4a12962a540140ebba68874ce6eceea0c4ac73970f06eb56d210b432d6ba [2022-11-23 15:30:41,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:30:41,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:30:41,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:30:41,792 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:30:41,792 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:30:41,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.hanoi.1.prop1-func-interl.c [2022-11-23 15:30:44,877 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:30:45,332 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:30:45,332 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.hanoi.1.prop1-func-interl.c [2022-11-23 15:30:45,355 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/data/18ad87386/34464799e20847efb15aaaea030fd7f4/FLAG4cb39e88e [2022-11-23 15:30:45,380 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/data/18ad87386/34464799e20847efb15aaaea030fd7f4 [2022-11-23 15:30:45,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:30:45,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:30:45,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:30:45,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:30:45,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:30:45,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:30:45" (1/1) ... [2022-11-23 15:30:45,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2959ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:45, skipping insertion in model container [2022-11-23 15:30:45,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:30:45" (1/1) ... [2022-11-23 15:30:45,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:30:45,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:30:45,688 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_a4245621-01e9-4653-8e95-6fdb2e3ecd34/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.hanoi.1.prop1-func-interl.c[1014,1027] [2022-11-23 15:30:46,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:30:46,113 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:30:46,131 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_a4245621-01e9-4653-8e95-6fdb2e3ecd34/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.hanoi.1.prop1-func-interl.c[1014,1027] [2022-11-23 15:30:46,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:30:46,386 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:30:46,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:46 WrapperNode [2022-11-23 15:30:46,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:30:46,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:30:46,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:30:46,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:30:46,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:46" (1/1) ... [2022-11-23 15:30:46,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:46" (1/1) ... [2022-11-23 15:30:46,577 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1776 [2022-11-23 15:30:46,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:30:46,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:30:46,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:30:46,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:30:46,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:46" (1/1) ... [2022-11-23 15:30:46,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:46" (1/1) ... [2022-11-23 15:30:46,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:46" (1/1) ... [2022-11-23 15:30:46,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:46" (1/1) ... [2022-11-23 15:30:46,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:46" (1/1) ... [2022-11-23 15:30:46,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:46" (1/1) ... [2022-11-23 15:30:46,669 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:46" (1/1) ... [2022-11-23 15:30:46,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:46" (1/1) ... [2022-11-23 15:30:46,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:30:46,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:30:46,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:30:46,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:30:46,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:46" (1/1) ... [2022-11-23 15:30:46,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:30:46,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:30:46,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:30:46,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:30:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:30:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:30:47,278 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:30:47,284 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:33:31,982 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:33:32,032 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:33:32,032 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:33:32,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:33:32 BoogieIcfgContainer [2022-11-23 15:33:32,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:33:32,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:33:32,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:33:32,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:33:32,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:30:45" (1/3) ... [2022-11-23 15:33:32,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3d68c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:33:32, skipping insertion in model container [2022-11-23 15:33:32,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:46" (2/3) ... [2022-11-23 15:33:32,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3d68c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:33:32, skipping insertion in model container [2022-11-23 15:33:32,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:33:32" (3/3) ... [2022-11-23 15:33:32,054 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.hanoi.1.prop1-func-interl.c [2022-11-23 15:33:32,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:33:32,074 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:33:32,142 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:33:32,152 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;@47b13765, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:33:32,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:33:32,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:33:32,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:33:32,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:33:32,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:33:32,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:33:32,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:33:32,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-23 15:33:32,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:33:32,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534798193] [2022-11-23 15:33:32,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:33:32,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:33:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:33:32,537 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:33:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:33:32,763 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:33:32,765 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:33:32,772 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:33:32,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:33:32,783 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 15:33:32,788 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:33:32,831 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 15:33:32,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:33:32 BoogieIcfgContainer [2022-11-23 15:33:32,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:33:32,856 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:33:32,857 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:33:32,857 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:33:32,858 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:33:32" (3/4) ... [2022-11-23 15:33:32,865 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:33:32,866 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:33:32,867 INFO L158 Benchmark]: Toolchain (without parser) took 167479.27ms. Allocated memory was 174.1MB in the beginning and 937.4MB in the end (delta: 763.4MB). Free memory was 140.7MB in the beginning and 369.9MB in the end (delta: -229.1MB). Peak memory consumption was 534.8MB. Max. memory is 16.1GB. [2022-11-23 15:33:32,867 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 125.8MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:33:32,868 INFO L158 Benchmark]: CACSL2BoogieTranslator took 996.91ms. Allocated memory is still 174.1MB. Free memory was 140.7MB in the beginning and 131.0MB in the end (delta: 9.7MB). Peak memory consumption was 61.8MB. Max. memory is 16.1GB. [2022-11-23 15:33:32,870 INFO L158 Benchmark]: Boogie Procedure Inliner took 188.38ms. Allocated memory is still 174.1MB. Free memory was 131.0MB in the beginning and 111.2MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 15:33:32,871 INFO L158 Benchmark]: Boogie Preprocessor took 117.96ms. Allocated memory is still 174.1MB. Free memory was 111.2MB in the beginning and 101.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 15:33:32,877 INFO L158 Benchmark]: RCFGBuilder took 165339.24ms. Allocated memory was 174.1MB in the beginning and 937.4MB in the end (delta: 763.4MB). Free memory was 101.6MB in the beginning and 412.9MB in the end (delta: -311.2MB). Peak memory consumption was 552.7MB. Max. memory is 16.1GB. [2022-11-23 15:33:32,878 INFO L158 Benchmark]: TraceAbstraction took 812.77ms. Allocated memory is still 937.4MB. Free memory was 412.9MB in the beginning and 369.9MB in the end (delta: 43.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-23 15:33:32,879 INFO L158 Benchmark]: Witness Printer took 9.28ms. Allocated memory is still 937.4MB. Free memory is still 369.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:33:32,887 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 125.8MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 996.91ms. Allocated memory is still 174.1MB. Free memory was 140.7MB in the beginning and 131.0MB in the end (delta: 9.7MB). Peak memory consumption was 61.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 188.38ms. Allocated memory is still 174.1MB. Free memory was 131.0MB in the beginning and 111.2MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 117.96ms. Allocated memory is still 174.1MB. Free memory was 111.2MB in the beginning and 101.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 165339.24ms. Allocated memory was 174.1MB in the beginning and 937.4MB in the end (delta: 763.4MB). Free memory was 101.6MB in the beginning and 412.9MB in the end (delta: -311.2MB). Peak memory consumption was 552.7MB. Max. memory is 16.1GB. * TraceAbstraction took 812.77ms. Allocated memory is still 937.4MB. Free memory was 412.9MB in the beginning and 369.9MB in the end (delta: 43.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Witness Printer took 9.28ms. Allocated memory is still 937.4MB. Free memory is still 369.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 204, overapproximation of bitwiseAnd at line 183, overapproximation of bitwiseXor at line 198. 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_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_66 = 0; [L39] const SORT_2 var_81 = 8; [L40] const SORT_2 var_82 = 1; [L41] const SORT_2 var_87 = 100; [L42] const SORT_2 var_88 = 0; [L43] const SORT_2 var_89 = 9; [L44] const SORT_4 var_94 = 0; [L45] const SORT_3 var_95 = 0; [L46] const SORT_4 var_97 = 1; [L47] const SORT_4 var_102 = 2; [L48] const SORT_4 var_104 = 3; [L49] const SORT_4 var_106 = 4; [L50] const SORT_4 var_108 = 5; [L51] const SORT_4 var_110 = 6; [L52] const SORT_4 var_112 = 7; [L53] const SORT_2 var_171 = 7; [L54] const SORT_2 var_172 = 2; [L55] const SORT_2 var_186 = 6; [L56] const SORT_2 var_187 = 3; [L57] const SORT_2 var_201 = 5; [L58] const SORT_2 var_202 = 4; [L59] const SORT_4 var_258 = 8; [L61] SORT_1 input_92; [L62] SORT_1 input_122; [L63] SORT_1 input_147; [L64] SORT_1 input_149; [L65] SORT_1 input_279; [L66] SORT_1 input_281; [L68] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L75] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L79] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L80] SORT_2 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L81] SORT_2 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L82] SORT_2 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L83] SORT_2 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L84] SORT_2 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L85] SORT_2 state_40 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L86] SORT_2 state_42 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L87] SORT_2 state_44 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L88] SORT_2 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L89] SORT_2 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L90] SORT_2 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L91] SORT_2 state_52 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L92] SORT_2 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L93] SORT_2 state_56 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L94] SORT_2 state_58 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L95] SORT_2 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L96] SORT_2 state_62 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L97] SORT_2 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L98] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] SORT_1 state_75 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_1 state_77 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_1 state_79 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] SORT_2 init_7_arg_1 = var_5; [L107] state_6 = init_7_arg_1 [L108] SORT_2 init_9_arg_1 = var_5; [L109] state_8 = init_9_arg_1 [L110] SORT_2 init_11_arg_1 = var_5; [L111] state_10 = init_11_arg_1 [L112] SORT_2 init_13_arg_1 = var_5; [L113] state_12 = init_13_arg_1 [L114] SORT_2 init_15_arg_1 = var_5; [L115] state_14 = init_15_arg_1 [L116] SORT_2 init_17_arg_1 = var_5; [L117] state_16 = init_17_arg_1 [L118] SORT_2 init_19_arg_1 = var_5; [L119] state_18 = init_19_arg_1 [L120] SORT_2 init_21_arg_1 = var_5; [L121] state_20 = init_21_arg_1 [L122] SORT_2 init_23_arg_1 = var_5; [L123] state_22 = init_23_arg_1 [L124] SORT_2 init_25_arg_1 = var_5; [L125] state_24 = init_25_arg_1 [L126] SORT_2 init_27_arg_1 = var_5; [L127] state_26 = init_27_arg_1 [L128] SORT_2 init_29_arg_1 = var_5; [L129] state_28 = init_29_arg_1 [L130] SORT_2 init_31_arg_1 = var_5; [L131] state_30 = init_31_arg_1 [L132] SORT_2 init_33_arg_1 = var_5; [L133] state_32 = init_33_arg_1 [L134] SORT_2 init_35_arg_1 = var_5; [L135] state_34 = init_35_arg_1 [L136] SORT_2 init_37_arg_1 = var_5; [L137] state_36 = init_37_arg_1 [L138] SORT_2 init_39_arg_1 = var_5; [L139] state_38 = init_39_arg_1 [L140] SORT_2 init_41_arg_1 = var_5; [L141] state_40 = init_41_arg_1 [L142] SORT_2 init_43_arg_1 = var_5; [L143] state_42 = init_43_arg_1 [L144] SORT_2 init_45_arg_1 = var_5; [L145] state_44 = init_45_arg_1 [L146] SORT_2 init_47_arg_1 = var_5; [L147] state_46 = init_47_arg_1 [L148] SORT_2 init_49_arg_1 = var_5; [L149] state_48 = init_49_arg_1 [L150] SORT_2 init_51_arg_1 = var_5; [L151] state_50 = init_51_arg_1 [L152] SORT_2 init_53_arg_1 = var_5; [L153] state_52 = init_53_arg_1 [L154] SORT_2 init_55_arg_1 = var_5; [L155] state_54 = init_55_arg_1 [L156] SORT_2 init_57_arg_1 = var_5; [L157] state_56 = init_57_arg_1 [L158] SORT_2 init_59_arg_1 = var_5; [L159] state_58 = init_59_arg_1 [L160] SORT_2 init_61_arg_1 = var_5; [L161] state_60 = init_61_arg_1 [L162] SORT_2 init_63_arg_1 = var_5; [L163] state_62 = init_63_arg_1 [L164] SORT_2 init_65_arg_1 = var_5; [L165] state_64 = init_65_arg_1 [L166] SORT_1 init_68_arg_1 = var_66; [L167] state_67 = init_68_arg_1 [L168] SORT_1 init_70_arg_1 = var_66; [L169] state_69 = init_70_arg_1 [L170] SORT_1 init_72_arg_1 = var_66; [L171] state_71 = init_72_arg_1 [L172] SORT_1 init_74_arg_1 = var_66; [L173] state_73 = init_74_arg_1 [L174] SORT_1 init_76_arg_1 = var_66; [L175] state_75 = init_76_arg_1 [L176] SORT_1 init_78_arg_1 = var_66; [L177] state_77 = init_78_arg_1 [L178] SORT_1 init_80_arg_1 = var_66; [L179] state_79 = init_80_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_39_arg_1=0, init_41_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_47_arg_1=0, init_49_arg_1=0, init_51_arg_1=0, init_53_arg_1=0, init_55_arg_1=0, init_57_arg_1=0, init_59_arg_1=0, init_61_arg_1=0, init_63_arg_1=0, init_65_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_38=0, state_40=0, state_42=0, state_44=0, state_46=0, state_48=0, state_50=0, state_52=0, state_54=0, state_56=0, state_58=0, state_6=0, state_60=0, state_62=0, state_64=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, var_102=2, var_104=3, var_106=4, var_108=5, var_110=6, var_112=7, var_171=7, var_172=2, var_186=6, var_187=3, var_201=5, var_202=4, var_258=8, var_5=0, var_66=0, var_81=8, var_82=1, var_87=100, var_88=0, var_89=9, var_94=0, var_95=0, var_97=1] [L182] input_92 = __VERIFIER_nondet_uchar() [L183] input_92 = input_92 & mask_SORT_1 [L184] input_122 = __VERIFIER_nondet_uchar() [L185] input_122 = input_122 & mask_SORT_1 [L186] input_147 = __VERIFIER_nondet_uchar() [L187] input_147 = input_147 & mask_SORT_1 [L188] input_149 = __VERIFIER_nondet_uchar() [L189] input_149 = input_149 & mask_SORT_1 [L190] input_279 = __VERIFIER_nondet_uchar() [L191] input_279 = input_279 & mask_SORT_1 [L192] input_281 = __VERIFIER_nondet_uchar() [L193] input_281 = input_281 & mask_SORT_1 [L196] SORT_2 var_83_arg_0 = var_82; [L197] SORT_2 var_83_arg_1 = state_64; [L198] SORT_2 var_83 = var_83_arg_0 ^ var_83_arg_1; [L199] var_83 = var_83 & mask_SORT_2 [L200] SORT_2 var_84_arg_0 = var_81; [L201] SORT_2 var_84_arg_1 = var_83; [L202] SORT_1 var_84 = var_84_arg_0 == var_84_arg_1; [L203] SORT_1 var_85_arg_0 = var_84; [L204] SORT_1 var_85_arg_1 = ~state_79; [L205] var_85_arg_1 = var_85_arg_1 & mask_SORT_1 [L206] SORT_1 var_85 = var_85_arg_0 & var_85_arg_1; [L207] var_85 = var_85 & mask_SORT_1 [L208] SORT_1 bad_86_arg_0 = var_85; [L209] CALL __VERIFIER_assert(!(bad_86_arg_0)) [L20] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L20] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 15:33:32,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.hanoi.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 356d4a12962a540140ebba68874ce6eceea0c4ac73970f06eb56d210b432d6ba --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:33:35,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:33:35,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:33:35,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:33:35,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:33:35,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:33:35,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:33:35,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:33:35,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:33:35,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:33:35,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:33:35,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:33:35,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:33:35,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:33:35,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:33:35,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:33:35,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:33:35,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:33:35,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:33:35,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:33:35,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:33:35,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:33:35,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:33:35,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:33:35,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:33:35,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:33:35,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:33:35,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:33:35,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:33:35,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:33:35,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:33:35,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:33:35,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:33:35,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:33:35,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:33:35,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:33:35,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:33:35,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:33:35,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:33:35,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:33:35,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:33:35,426 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-23 15:33:35,451 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:33:35,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:33:35,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:33:35,452 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:33:35,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:33:35,453 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:33:35,453 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:33:35,453 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:33:35,454 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:33:35,454 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:33:35,454 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:33:35,454 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:33:35,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:33:35,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:33:35,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:33:35,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:33:35,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:33:35,456 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:33:35,456 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:33:35,456 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:33:35,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:33:35,457 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:33:35,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:33:35,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:33:35,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:33:35,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:33:35,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:33:35,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:33:35,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:33:35,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:33:35,459 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:33:35,459 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:33:35,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:33:35,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:33:35,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:33:35,459 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_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 356d4a12962a540140ebba68874ce6eceea0c4ac73970f06eb56d210b432d6ba [2022-11-23 15:33:35,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:33:35,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:33:35,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:33:35,862 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:33:35,863 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:33:35,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.hanoi.1.prop1-func-interl.c [2022-11-23 15:33:39,044 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:33:39,418 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:33:39,418 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.hanoi.1.prop1-func-interl.c [2022-11-23 15:33:39,433 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/data/b5a59527b/f781e51280f8467b97230c92c332fb28/FLAGcb12ce9e3 [2022-11-23 15:33:39,472 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/data/b5a59527b/f781e51280f8467b97230c92c332fb28 [2022-11-23 15:33:39,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:33:39,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:33:39,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:33:39,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:33:39,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:33:39,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:33:39" (1/1) ... [2022-11-23 15:33:39,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d582875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:39, skipping insertion in model container [2022-11-23 15:33:39,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:33:39" (1/1) ... [2022-11-23 15:33:39,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:33:39,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:33:39,784 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_a4245621-01e9-4653-8e95-6fdb2e3ecd34/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.hanoi.1.prop1-func-interl.c[1014,1027] [2022-11-23 15:33:40,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:33:40,178 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:33:40,190 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_a4245621-01e9-4653-8e95-6fdb2e3ecd34/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.hanoi.1.prop1-func-interl.c[1014,1027] [2022-11-23 15:33:40,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:33:40,358 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:33:40,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:40 WrapperNode [2022-11-23 15:33:40,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:33:40,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:33:40,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:33:40,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:33:40,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:40" (1/1) ... [2022-11-23 15:33:40,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:40" (1/1) ... [2022-11-23 15:33:40,519 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1776 [2022-11-23 15:33:40,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:33:40,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:33:40,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:33:40,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:33:40,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:40" (1/1) ... [2022-11-23 15:33:40,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:40" (1/1) ... [2022-11-23 15:33:40,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:40" (1/1) ... [2022-11-23 15:33:40,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:40" (1/1) ... [2022-11-23 15:33:40,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:40" (1/1) ... [2022-11-23 15:33:40,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:40" (1/1) ... [2022-11-23 15:33:40,603 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:40" (1/1) ... [2022-11-23 15:33:40,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:40" (1/1) ... [2022-11-23 15:33:40,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:33:40,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:33:40,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:33:40,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:33:40,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:40" (1/1) ... [2022-11-23 15:33:40,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:33:40,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:33:40,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:33:40,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:33:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:33:40,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:33:41,302 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:33:41,304 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:33:44,165 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:33:44,174 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:33:44,174 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:33:44,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:33:44 BoogieIcfgContainer [2022-11-23 15:33:44,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:33:44,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:33:44,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:33:44,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:33:44,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:33:39" (1/3) ... [2022-11-23 15:33:44,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5136c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:33:44, skipping insertion in model container [2022-11-23 15:33:44,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:40" (2/3) ... [2022-11-23 15:33:44,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5136c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:33:44, skipping insertion in model container [2022-11-23 15:33:44,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:33:44" (3/3) ... [2022-11-23 15:33:44,192 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.hanoi.1.prop1-func-interl.c [2022-11-23 15:33:44,213 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:33:44,213 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:33:44,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:33:44,287 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;@9114bfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:33:44,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:33:44,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:33:44,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:33:44,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:33:44,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:33:44,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:33:44,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:33:44,310 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-23 15:33:44,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:33:44,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857674718] [2022-11-23 15:33:44,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:33:44,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:33:44,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:33:44,339 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:33:44,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 15:33:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:33:44,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 15:33:44,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:33:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:33:45,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:33:45,040 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:33:45,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857674718] [2022-11-23 15:33:45,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857674718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:33:45,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:33:45,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:33:45,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254987577] [2022-11-23 15:33:45,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:33:45,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:33:45,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:33:45,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:33:45,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:33:45,085 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:33:45,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:33:45,684 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-23 15:33:45,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:33:45,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 15:33:45,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:33:45,696 INFO L225 Difference]: With dead ends: 20 [2022-11-23 15:33:45,697 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 15:33:45,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:33:45,704 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:33:45,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 15:33:45,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 15:33:45,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-23 15:33:45,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:33:45,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 15:33:45,741 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 15:33:45,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:33:45,742 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 15:33:45,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:33:45,742 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 15:33:45,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:33:45,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:33:45,743 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 15:33:45,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:33:45,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:33:45,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:33:45,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:33:45,958 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-23 15:33:45,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:33:45,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209302345] [2022-11-23 15:33:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:33:45,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:33:45,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:33:45,984 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:33:46,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 15:33:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:33:47,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-23 15:33:47,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:33:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:33:47,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:33:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:33:48,592 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:33:48,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209302345] [2022-11-23 15:33:48,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209302345] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:33:48,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1732096502] [2022-11-23 15:33:48,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:33:48,594 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:33:48,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:33:48,597 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:33:48,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4245621-01e9-4653-8e95-6fdb2e3ecd34/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-23 15:33:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:33:50,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 205 conjunts are in the unsatisfiable core [2022-11-23 15:33:50,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:35:46,681 WARN L233 SmtUtils]: Spent 1.87m on a formula simplification. DAG size of input: 187 DAG size of output: 173 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:35:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:35:46,986 INFO L328 TraceCheckSpWp]: Computing backward predicates...