./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS --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 109ee6fb23cd6e30d14aec37d73eede06aedf81ad0f99da544662d8756597166 --- 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-8393723 [2022-11-19 07:53:28,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:53:28,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:53:28,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:53:28,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:53:28,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:53:28,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:53:28,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:53:28,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:53:28,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:53:28,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:53:28,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:53:28,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:53:28,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:53:28,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:53:28,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:53:28,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:53:28,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:53:28,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:53:28,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:53:28,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:53:28,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:53:28,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:53:28,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:53:28,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:53:28,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:53:28,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:53:28,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:53:28,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:53:28,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:53:28,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:53:28,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:53:28,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:53:28,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:53:28,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:53:28,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:53:28,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:53:28,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:53:28,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:53:28,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:53:28,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:53:28,505 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:53:28,538 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:53:28,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:53:28,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:53:28,551 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:53:28,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:53:28,552 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:53:28,552 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:53:28,552 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:53:28,553 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:53:28,553 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:53:28,554 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:53:28,554 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:53:28,554 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:53:28,555 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:53:28,555 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:53:28,555 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:53:28,555 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:53:28,556 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:53:28,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:53:28,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:53:28,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:53:28,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:53:28,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:53:28,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:53:28,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:53:28,558 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:53:28,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:53:28,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:53:28,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:53:28,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:53:28,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:53:28,560 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:53:28,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:53:28,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:53:28,561 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:53:28,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:53:28,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:53:28,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:53:28,561 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_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 109ee6fb23cd6e30d14aec37d73eede06aedf81ad0f99da544662d8756597166 [2022-11-19 07:53:28,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:53:28,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:53:28,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:53:28,901 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:53:28,902 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:53:28,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c [2022-11-19 07:53:28,976 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/data/4b2f040ba/cda1dc68050b4a4eb99869cb4f943b36/FLAG6b5e45ef5 [2022-11-19 07:53:29,486 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:53:29,487 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c [2022-11-19 07:53:29,498 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/data/4b2f040ba/cda1dc68050b4a4eb99869cb4f943b36/FLAG6b5e45ef5 [2022-11-19 07:53:29,778 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/data/4b2f040ba/cda1dc68050b4a4eb99869cb4f943b36 [2022-11-19 07:53:29,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:53:29,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:53:29,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:53:29,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:53:29,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:53:29,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:29" (1/1) ... [2022-11-19 07:53:29,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b813609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:29, skipping insertion in model container [2022-11-19 07:53:29,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:29" (1/1) ... [2022-11-19 07:53:29,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:53:29,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:53:30,044 WARN L234 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_93957681-cb7a-49c0-b535-8191b93e43c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c[1107,1120] [2022-11-19 07:53:30,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:53:30,259 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:53:30,269 WARN L234 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_93957681-cb7a-49c0-b535-8191b93e43c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c[1107,1120] [2022-11-19 07:53:30,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:53:30,430 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:53:30,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:30 WrapperNode [2022-11-19 07:53:30,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:53:30,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:53:30,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:53:30,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:53:30,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:30" (1/1) ... [2022-11-19 07:53:30,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:30" (1/1) ... [2022-11-19 07:53:30,549 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1088 [2022-11-19 07:53:30,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:53:30,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:53:30,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:53:30,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:53:30,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:30" (1/1) ... [2022-11-19 07:53:30,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:30" (1/1) ... [2022-11-19 07:53:30,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:30" (1/1) ... [2022-11-19 07:53:30,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:30" (1/1) ... [2022-11-19 07:53:30,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:30" (1/1) ... [2022-11-19 07:53:30,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:30" (1/1) ... [2022-11-19 07:53:30,614 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:30" (1/1) ... [2022-11-19 07:53:30,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:30" (1/1) ... [2022-11-19 07:53:30,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:53:30,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:53:30,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:53:30,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:53:30,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:30" (1/1) ... [2022-11-19 07:53:30,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:53:30,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:53:30,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:53:30,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:53:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:53:30,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:53:31,033 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:53:31,035 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:53:33,520 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:53:34,662 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:53:34,662 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:53:34,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:34 BoogieIcfgContainer [2022-11-19 07:53:34,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:53:34,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:53:34,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:53:34,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:53:34,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:53:29" (1/3) ... [2022-11-19 07:53:34,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74df5808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:34, skipping insertion in model container [2022-11-19 07:53:34,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:30" (2/3) ... [2022-11-19 07:53:34,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74df5808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:34, skipping insertion in model container [2022-11-19 07:53:34,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:34" (3/3) ... [2022-11-19 07:53:34,678 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.toy_lock_4.c [2022-11-19 07:53:34,697 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:53:34,697 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:53:34,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:53:34,784 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;@5a38bf01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:53:34,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:53:34,788 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) [2022-11-19 07:53:34,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:53:34,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:34,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:53:34,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:34,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:34,804 INFO L85 PathProgramCache]: Analyzing trace with hash 13349474, now seen corresponding path program 1 times [2022-11-19 07:53:34,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:34,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537182671] [2022-11-19 07:53:34,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:34,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:53:35,556 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:53:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:53:36,208 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:53:36,213 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:53:36,214 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:53:36,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:53:36,222 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 07:53:36,229 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:53:36,270 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 07:53:36,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:53:36 BoogieIcfgContainer [2022-11-19 07:53:36,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:53:36,295 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:53:36,295 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:53:36,296 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:53:36,297 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:34" (3/4) ... [2022-11-19 07:53:36,300 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:53:36,300 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:53:36,303 INFO L158 Benchmark]: Toolchain (without parser) took 6520.75ms. Allocated memory was 136.3MB in the beginning and 224.4MB in the end (delta: 88.1MB). Free memory was 99.7MB in the beginning and 172.9MB in the end (delta: -73.2MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2022-11-19 07:53:36,304 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 136.3MB. Free memory is still 117.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:53:36,304 INFO L158 Benchmark]: CACSL2BoogieTranslator took 647.51ms. Allocated memory is still 136.3MB. Free memory was 99.5MB in the beginning and 91.8MB in the end (delta: 7.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:53:36,306 INFO L158 Benchmark]: Boogie Procedure Inliner took 117.49ms. Allocated memory is still 136.3MB. Free memory was 91.8MB in the beginning and 82.8MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:53:36,307 INFO L158 Benchmark]: Boogie Preprocessor took 81.28ms. Allocated memory is still 136.3MB. Free memory was 82.8MB in the beginning and 78.2MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:53:36,313 INFO L158 Benchmark]: RCFGBuilder took 4033.58ms. Allocated memory was 136.3MB in the beginning and 186.6MB in the end (delta: 50.3MB). Free memory was 77.7MB in the beginning and 108.4MB in the end (delta: -30.7MB). Peak memory consumption was 73.5MB. Max. memory is 16.1GB. [2022-11-19 07:53:36,315 INFO L158 Benchmark]: TraceAbstraction took 1625.80ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 108.4MB in the beginning and 172.9MB in the end (delta: -64.5MB). Peak memory consumption was 70.4MB. Max. memory is 16.1GB. [2022-11-19 07:53:36,315 INFO L158 Benchmark]: Witness Printer took 6.33ms. Allocated memory is still 224.4MB. Free memory was 172.9MB in the beginning and 172.9MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:53:36,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 136.3MB. Free memory is still 117.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 647.51ms. Allocated memory is still 136.3MB. Free memory was 99.5MB in the beginning and 91.8MB in the end (delta: 7.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 117.49ms. Allocated memory is still 136.3MB. Free memory was 91.8MB in the beginning and 82.8MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.28ms. Allocated memory is still 136.3MB. Free memory was 82.8MB in the beginning and 78.2MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 4033.58ms. Allocated memory was 136.3MB in the beginning and 186.6MB in the end (delta: 50.3MB). Free memory was 77.7MB in the beginning and 108.4MB in the end (delta: -30.7MB). Peak memory consumption was 73.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1625.80ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 108.4MB in the beginning and 172.9MB in the end (delta: -64.5MB). Peak memory consumption was 70.4MB. Max. memory is 16.1GB. * Witness Printer took 6.33ms. Allocated memory is still 224.4MB. Free memory was 172.9MB in the beginning and 172.9MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 bitwiseOr at line 125, overapproximation of bitwiseComplement at line 187, overapproximation of bitwiseAnd at line 103. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 8); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (8 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 2); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (2 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 1); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (1 - 1); [L34] const SORT_1 var_11 = 0; [L35] const SORT_5 var_45 = 1; [L36] const SORT_1 var_49 = 1; [L37] const SORT_5 var_60 = 0; [L38] const SORT_3 var_81 = 0; [L39] const SORT_3 var_90 = 1; [L40] const SORT_3 var_99 = 2; [L41] const SORT_3 var_108 = 3; [L43] SORT_1 input_2; [L44] SORT_3 input_4; [L45] SORT_5 input_6; [L46] SORT_1 input_7; [L47] SORT_3 input_8; [L48] SORT_3 input_9; [L49] SORT_5 input_10; [L51] SORT_1 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L52] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L53] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L54] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L55] SORT_1 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L56] SORT_1 state_52 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L57] SORT_1 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L58] SORT_1 state_56 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L59] SORT_5 state_58 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L60] SORT_5 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L61] SORT_5 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L62] SORT_5 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L63] SORT_1 state_68 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L64] SORT_1 state_70 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L65] SORT_1 state_72 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L66] SORT_1 state_74 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L68] SORT_1 init_13_arg_1 = var_11; [L69] state_12 = init_13_arg_1 [L70] SORT_1 init_16_arg_1 = var_11; [L71] state_15 = init_16_arg_1 [L72] SORT_1 init_21_arg_1 = var_11; [L73] state_20 = init_21_arg_1 [L74] SORT_1 init_27_arg_1 = var_11; [L75] state_26 = init_27_arg_1 [L76] SORT_1 init_51_arg_1 = var_49; [L77] state_50 = init_51_arg_1 [L78] SORT_1 init_53_arg_1 = var_11; [L79] state_52 = init_53_arg_1 [L80] SORT_1 init_55_arg_1 = var_11; [L81] state_54 = init_55_arg_1 [L82] SORT_1 init_57_arg_1 = var_11; [L83] state_56 = init_57_arg_1 [L84] SORT_5 init_59_arg_1 = var_45; [L85] state_58 = init_59_arg_1 [L86] SORT_5 init_62_arg_1 = var_60; [L87] state_61 = init_62_arg_1 [L88] SORT_5 init_64_arg_1 = var_60; [L89] state_63 = init_64_arg_1 [L90] SORT_5 init_66_arg_1 = var_60; [L91] state_65 = init_66_arg_1 [L92] SORT_1 init_69_arg_1 = var_11; [L93] state_68 = init_69_arg_1 [L94] SORT_1 init_71_arg_1 = var_11; [L95] state_70 = init_71_arg_1 [L96] SORT_1 init_73_arg_1 = var_11; [L97] state_72 = init_73_arg_1 [L98] SORT_1 init_75_arg_1 = var_11; [L99] state_74 = init_75_arg_1 VAL [init_13_arg_1=0, init_16_arg_1=0, init_21_arg_1=0, init_27_arg_1=0, init_51_arg_1=1, init_53_arg_1=0, init_55_arg_1=0, init_57_arg_1=0, init_59_arg_1=1, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_69_arg_1=0, init_71_arg_1=0, init_73_arg_1=0, init_75_arg_1=0, mask_SORT_1=255, mask_SORT_3=3, mask_SORT_5=1, msb_SORT_1=128, msb_SORT_3=2, msb_SORT_5=1, state_12=0, state_15=0, state_20=0, state_26=0, state_50=1, state_52=0, state_54=0, state_56=0, state_58=1, state_61=0, state_63=0, state_65=0, state_68=0, state_70=0, state_72=0, state_74=0, var_108=3, var_11=0, var_45=1, var_49=1, var_60=0, var_81=0, var_90=1, var_99=2] [L102] input_2 = __VERIFIER_nondet_uchar() [L103] input_2 = input_2 & mask_SORT_1 [L104] input_4 = __VERIFIER_nondet_uchar() [L105] input_4 = input_4 & mask_SORT_3 [L106] input_6 = __VERIFIER_nondet_uchar() [L107] input_7 = __VERIFIER_nondet_uchar() [L108] input_7 = input_7 & mask_SORT_1 [L109] input_8 = __VERIFIER_nondet_uchar() [L110] input_8 = input_8 & mask_SORT_3 [L111] input_9 = __VERIFIER_nondet_uchar() [L112] input_9 = input_9 & mask_SORT_3 [L113] input_10 = __VERIFIER_nondet_uchar() [L114] input_10 = input_10 & mask_SORT_5 [L117] SORT_1 var_14_arg_0 = state_12; [L118] SORT_1 var_14_arg_1 = var_11; [L119] SORT_5 var_14 = var_14_arg_0 == var_14_arg_1; [L120] SORT_1 var_17_arg_0 = state_12; [L121] SORT_1 var_17_arg_1 = state_15; [L122] SORT_5 var_17 = var_17_arg_0 != var_17_arg_1; [L123] SORT_5 var_18_arg_0 = var_14; [L124] SORT_5 var_18_arg_1 = var_17; [L125] SORT_5 var_18 = var_18_arg_0 | var_18_arg_1; [L126] SORT_1 var_19_arg_0 = state_12; [L127] SORT_1 var_19_arg_1 = var_11; [L128] SORT_5 var_19 = var_19_arg_0 == var_19_arg_1; [L129] SORT_1 var_22_arg_0 = state_12; [L130] SORT_1 var_22_arg_1 = state_20; [L131] SORT_5 var_22 = var_22_arg_0 != var_22_arg_1; [L132] SORT_5 var_23_arg_0 = var_19; [L133] SORT_5 var_23_arg_1 = var_22; [L134] SORT_5 var_23 = var_23_arg_0 | var_23_arg_1; [L135] SORT_5 var_24_arg_0 = var_18; [L136] SORT_5 var_24_arg_1 = var_23; [L137] SORT_5 var_24 = var_24_arg_0 & var_24_arg_1; [L138] SORT_1 var_25_arg_0 = state_12; [L139] SORT_1 var_25_arg_1 = var_11; [L140] SORT_5 var_25 = var_25_arg_0 == var_25_arg_1; [L141] SORT_1 var_28_arg_0 = state_12; [L142] SORT_1 var_28_arg_1 = state_26; [L143] SORT_5 var_28 = var_28_arg_0 != var_28_arg_1; [L144] SORT_5 var_29_arg_0 = var_25; [L145] SORT_5 var_29_arg_1 = var_28; [L146] SORT_5 var_29 = var_29_arg_0 | var_29_arg_1; [L147] SORT_5 var_30_arg_0 = var_24; [L148] SORT_5 var_30_arg_1 = var_29; [L149] SORT_5 var_30 = var_30_arg_0 & var_30_arg_1; [L150] SORT_1 var_31_arg_0 = state_15; [L151] SORT_1 var_31_arg_1 = var_11; [L152] SORT_5 var_31 = var_31_arg_0 == var_31_arg_1; [L153] SORT_1 var_32_arg_0 = state_15; [L154] SORT_1 var_32_arg_1 = state_20; [L155] SORT_5 var_32 = var_32_arg_0 != var_32_arg_1; [L156] SORT_5 var_33_arg_0 = var_31; [L157] SORT_5 var_33_arg_1 = var_32; [L158] SORT_5 var_33 = var_33_arg_0 | var_33_arg_1; [L159] SORT_5 var_34_arg_0 = var_30; [L160] SORT_5 var_34_arg_1 = var_33; [L161] SORT_5 var_34 = var_34_arg_0 & var_34_arg_1; [L162] SORT_1 var_35_arg_0 = state_15; [L163] SORT_1 var_35_arg_1 = var_11; [L164] SORT_5 var_35 = var_35_arg_0 == var_35_arg_1; [L165] SORT_1 var_36_arg_0 = state_15; [L166] SORT_1 var_36_arg_1 = state_26; [L167] SORT_5 var_36 = var_36_arg_0 != var_36_arg_1; [L168] SORT_5 var_37_arg_0 = var_35; [L169] SORT_5 var_37_arg_1 = var_36; [L170] SORT_5 var_37 = var_37_arg_0 | var_37_arg_1; [L171] SORT_5 var_38_arg_0 = var_34; [L172] SORT_5 var_38_arg_1 = var_37; [L173] SORT_5 var_38 = var_38_arg_0 & var_38_arg_1; [L174] SORT_1 var_39_arg_0 = state_20; [L175] SORT_1 var_39_arg_1 = var_11; [L176] SORT_5 var_39 = var_39_arg_0 == var_39_arg_1; [L177] SORT_1 var_40_arg_0 = state_20; [L178] SORT_1 var_40_arg_1 = state_26; [L179] SORT_5 var_40 = var_40_arg_0 != var_40_arg_1; [L180] SORT_5 var_41_arg_0 = var_39; [L181] SORT_5 var_41_arg_1 = var_40; [L182] SORT_5 var_41 = var_41_arg_0 | var_41_arg_1; [L183] SORT_5 var_42_arg_0 = var_38; [L184] SORT_5 var_42_arg_1 = var_41; [L185] SORT_5 var_42 = var_42_arg_0 & var_42_arg_1; [L186] SORT_5 var_46_arg_0 = var_42; [L187] SORT_5 var_46 = ~var_46_arg_0; [L188] SORT_5 var_47_arg_0 = var_45; [L189] SORT_5 var_47_arg_1 = var_46; [L190] SORT_5 var_47 = var_47_arg_0 & var_47_arg_1; [L191] var_47 = var_47 & mask_SORT_5 [L192] SORT_5 bad_48_arg_0 = var_47; [L193] CALL __VERIFIER_assert(!(bad_48_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: 1.5s, 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, 0.6s 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 [2022-11-19 07:53:36,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS --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 109ee6fb23cd6e30d14aec37d73eede06aedf81ad0f99da544662d8756597166 --- 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-8393723 [2022-11-19 07:53:38,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:53:38,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:53:38,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:53:38,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:53:38,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:53:38,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:53:38,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:53:38,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:53:38,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:53:38,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:53:38,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:53:38,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:53:38,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:53:38,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:53:38,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:53:38,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:53:38,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:53:38,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:53:38,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:53:38,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:53:38,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:53:38,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:53:38,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:53:38,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:53:38,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:53:38,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:53:38,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:53:38,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:53:38,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:53:38,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:53:38,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:53:38,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:53:38,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:53:38,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:53:38,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:53:38,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:53:38,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:53:38,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:53:38,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:53:38,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:53:38,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 07:53:38,887 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:53:38,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:53:38,889 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:53:38,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:53:38,890 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:53:38,890 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:53:38,890 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:53:38,891 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:53:38,891 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:53:38,891 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:53:38,892 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:53:38,892 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:53:38,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:53:38,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:53:38,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:53:38,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:53:38,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:53:38,895 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:53:38,895 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:53:38,895 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:53:38,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:53:38,895 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:53:38,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:53:38,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:53:38,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:53:38,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:53:38,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:53:38,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:53:38,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:53:38,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:53:38,897 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:53:38,897 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:53:38,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:53:38,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:53:38,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:53:38,898 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_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 109ee6fb23cd6e30d14aec37d73eede06aedf81ad0f99da544662d8756597166 [2022-11-19 07:53:39,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:53:39,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:53:39,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:53:39,343 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:53:39,344 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:53:39,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c [2022-11-19 07:53:39,425 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/data/863fd305e/c6fbbbed31834fa08f3c8ee0e107f635/FLAG52c52f697 [2022-11-19 07:53:39,976 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:53:39,977 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c [2022-11-19 07:53:39,997 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/data/863fd305e/c6fbbbed31834fa08f3c8ee0e107f635/FLAG52c52f697 [2022-11-19 07:53:40,277 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/data/863fd305e/c6fbbbed31834fa08f3c8ee0e107f635 [2022-11-19 07:53:40,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:53:40,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:53:40,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:53:40,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:53:40,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:53:40,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:40" (1/1) ... [2022-11-19 07:53:40,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e10638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40, skipping insertion in model container [2022-11-19 07:53:40,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:40" (1/1) ... [2022-11-19 07:53:40,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:53:40,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:53:40,504 WARN L234 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_93957681-cb7a-49c0-b535-8191b93e43c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c[1107,1120] [2022-11-19 07:53:40,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:53:40,767 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:53:40,778 WARN L234 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_93957681-cb7a-49c0-b535-8191b93e43c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.toy_lock_4.c[1107,1120] [2022-11-19 07:53:40,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:53:40,960 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:53:40,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40 WrapperNode [2022-11-19 07:53:40,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:53:40,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:53:40,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:53:40,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:53:40,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2022-11-19 07:53:40,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2022-11-19 07:53:41,057 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 871 [2022-11-19 07:53:41,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:53:41,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:53:41,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:53:41,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:53:41,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2022-11-19 07:53:41,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2022-11-19 07:53:41,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2022-11-19 07:53:41,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2022-11-19 07:53:41,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2022-11-19 07:53:41,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2022-11-19 07:53:41,150 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2022-11-19 07:53:41,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2022-11-19 07:53:41,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:53:41,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:53:41,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:53:41,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:53:41,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2022-11-19 07:53:41,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:53:41,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:53:41,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:53:41,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:53:41,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:53:41,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:53:41,649 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:53:41,651 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:53:42,847 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:53:42,864 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:53:42,865 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:53:42,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:42 BoogieIcfgContainer [2022-11-19 07:53:42,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:53:42,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:53:42,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:53:42,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:53:42,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:53:40" (1/3) ... [2022-11-19 07:53:42,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a63441a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:42, skipping insertion in model container [2022-11-19 07:53:42,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (2/3) ... [2022-11-19 07:53:42,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a63441a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:42, skipping insertion in model container [2022-11-19 07:53:42,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:42" (3/3) ... [2022-11-19 07:53:42,878 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.toy_lock_4.c [2022-11-19 07:53:42,901 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:53:42,901 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:53:42,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:53:42,984 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;@3302fc8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:53:42,984 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:53:42,989 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) [2022-11-19 07:53:42,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:53:42,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:42,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:53:42,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:43,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:43,004 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 07:53:43,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:53:43,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628522232] [2022-11-19 07:53:43,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:43,022 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 [2022-11-19 07:53:43,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:53:43,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:53:43,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:53:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:43,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-19 07:53:43,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:53:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:53:43,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:53:43,942 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:53:43,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628522232] [2022-11-19 07:53:43,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628522232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:43,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:53:43,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:53:43,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240580031] [2022-11-19 07:53:43,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:43,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:53:43,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:53:43,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:53:43,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:53:43,989 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) [2022-11-19 07:53:44,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:44,185 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 07:53:44,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:53:44,189 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 [2022-11-19 07:53:44,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:44,197 INFO L225 Difference]: With dead ends: 20 [2022-11-19 07:53:44,198 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 07:53:44,205 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 [2022-11-19 07:53:44,209 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:44,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:53:44,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 07:53:44,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 07:53:44,243 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) [2022-11-19 07:53:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 07:53:44,246 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 07:53:44,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:44,246 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 07:53:44,247 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) [2022-11-19 07:53:44,247 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 07:53:44,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:53:44,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:44,248 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:44,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:53:44,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:53:44,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:44,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:44,461 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 07:53:44,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:53:44,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52830481] [2022-11-19 07:53:44,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:44,463 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 [2022-11-19 07:53:44,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:53:44,465 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:53:44,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:53:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:45,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 124 conjunts are in the unsatisfiable core [2022-11-19 07:53:45,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:53:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:53:46,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:54:01,667 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 342 DAG size of output: 232 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:54:01,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:54:01,897 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:54:01,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52830481] [2022-11-19 07:54:01,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52830481] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:54:01,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [587902670] [2022-11-19 07:54:01,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:01,898 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:54:01,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:54:01,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:54:01,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 07:54:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:02,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 129 conjunts are in the unsatisfiable core [2022-11-19 07:54:03,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:54:03,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:54:15,959 WARN L233 SmtUtils]: Spent 10.97s on a formula simplification. DAG size of input: 230 DAG size of output: 156 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:00:53,884 WARN L233 SmtUtils]: Spent 6.40m on a formula simplification. DAG size of input: 568 DAG size of output: 219 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:00:54,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:00:54,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [587902670] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:00:54,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81642291] [2022-11-19 08:00:54,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:54,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:00:54,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:00:54,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:00:54,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:00:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:54,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 118 conjunts are in the unsatisfiable core [2022-11-19 08:00:54,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:00:55,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:00:55,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:01:32,086 WARN L233 SmtUtils]: Spent 25.45s on a formula simplification. DAG size of input: 230 DAG size of output: 158 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:05:34,640 WARN L233 SmtUtils]: Spent 3.79m on a formula simplification. DAG size of input: 356 DAG size of output: 217 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:05:51,002 WARN L233 SmtUtils]: Spent 13.99s on a formula simplification that was a NOOP. DAG size: 220 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:05:51,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:05:51,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81642291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:05:51,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:05:51,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 5, 6, 6] total 18 [2022-11-19 08:05:51,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968746585] [2022-11-19 08:05:51,170 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:05:51,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-19 08:05:51,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:05:51,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-19 08:05:51,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=206, Unknown=12, NotChecked=0, Total=306 [2022-11-19 08:05:51,173 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 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) [2022-11-19 08:05:51,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:51,597 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 08:05:51,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:05:51,598 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 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 [2022-11-19 08:05:51,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:51,599 INFO L225 Difference]: With dead ends: 16 [2022-11-19 08:05:51,599 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 08:05:51,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 697.0s TimeCoverageRelationStatistics Valid=132, Invalid=276, Unknown=12, NotChecked=0, Total=420 [2022-11-19 08:05:51,602 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:51,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 18 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-11-19 08:05:51,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 08:05:51,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-19 08:05:51,607 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) [2022-11-19 08:05:51,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 08:05:51,608 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-19 08:05:51,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:51,609 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 08:05:51,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 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) [2022-11-19 08:05:51,609 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 08:05:51,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 08:05:51,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:51,610 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 08:05:51,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:05:51,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-19 08:05:52,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-19 08:05:52,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:05:52,220 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:05:52,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:52,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-19 08:05:52,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:05:52,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584111974] [2022-11-19 08:05:52,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:05:52,225 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 [2022-11-19 08:05:52,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:05:52,226 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:05:52,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93957681-cb7a-49c0-b535-8191b93e43c0/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:05:53,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:05:53,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:05:53,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 191 conjunts are in the unsatisfiable core [2022-11-19 08:05:53,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:05:55,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:05:55,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:06:58,817 WARN L233 SmtUtils]: Spent 41.75s on a formula simplification. DAG size of input: 436 DAG size of output: 192 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)