./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9 --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 2f1d80befaa77be0a079109a635df23085fa7ccf7b1b752044bebae6779c0281 --- 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-6b4ec56 [2022-11-20 18:57:35,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 18:57:35,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 18:57:35,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 18:57:35,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 18:57:35,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 18:57:35,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 18:57:35,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 18:57:35,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 18:57:35,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 18:57:35,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 18:57:35,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 18:57:35,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 18:57:35,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 18:57:35,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 18:57:35,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 18:57:35,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 18:57:35,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 18:57:35,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 18:57:35,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 18:57:35,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 18:57:35,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 18:57:35,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 18:57:35,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 18:57:35,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 18:57:35,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 18:57:35,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 18:57:35,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 18:57:35,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 18:57:35,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 18:57:35,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 18:57:35,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 18:57:35,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 18:57:35,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 18:57:35,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 18:57:35,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 18:57:35,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 18:57:35,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 18:57:35,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 18:57:35,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 18:57:35,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 18:57:35,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 18:57:35,514 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 18:57:35,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 18:57:35,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 18:57:35,515 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 18:57:35,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 18:57:35,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 18:57:35,516 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 18:57:35,516 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 18:57:35,517 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 18:57:35,517 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 18:57:35,517 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 18:57:35,517 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 18:57:35,517 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 18:57:35,518 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 18:57:35,518 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 18:57:35,518 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 18:57:35,518 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 18:57:35,519 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 18:57:35,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 18:57:35,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 18:57:35,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 18:57:35,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 18:57:35,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 18:57:35,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 18:57:35,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 18:57:35,521 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 18:57:35,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 18:57:35,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 18:57:35,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 18:57:35,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:57:35,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 18:57:35,523 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 18:57:35,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 18:57:35,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 18:57:35,523 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 18:57:35,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 18:57:35,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 18:57:35,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 18:57:35,524 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_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1d80befaa77be0a079109a635df23085fa7ccf7b1b752044bebae6779c0281 [2022-11-20 18:57:35,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 18:57:35,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 18:57:35,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 18:57:35,812 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 18:57:35,813 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 18:57:35,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p02.c [2022-11-20 18:57:38,943 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 18:57:39,269 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 18:57:39,270 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p02.c [2022-11-20 18:57:39,285 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/data/4d2ec7325/bc3e3ead02044bdcacf237e8056b5e36/FLAG78302cf44 [2022-11-20 18:57:39,301 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/data/4d2ec7325/bc3e3ead02044bdcacf237e8056b5e36 [2022-11-20 18:57:39,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 18:57:39,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 18:57:39,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 18:57:39,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 18:57:39,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 18:57:39,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:57:39" (1/1) ... [2022-11-20 18:57:39,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d2a673a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:39, skipping insertion in model container [2022-11-20 18:57:39,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:57:39" (1/1) ... [2022-11-20 18:57:39,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 18:57:39,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 18:57:39,546 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p02.c[1107,1120] [2022-11-20 18:57:39,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:57:39,803 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 18:57:39,815 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p02.c[1107,1120] [2022-11-20 18:57:40,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:57:40,105 INFO L208 MainTranslator]: Completed translation [2022-11-20 18:57:40,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:40 WrapperNode [2022-11-20 18:57:40,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 18:57:40,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 18:57:40,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 18:57:40,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 18:57:40,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:40" (1/1) ... [2022-11-20 18:57:40,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:40" (1/1) ... [2022-11-20 18:57:40,280 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1034 [2022-11-20 18:57:40,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 18:57:40,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 18:57:40,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 18:57:40,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 18:57:40,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:40" (1/1) ... [2022-11-20 18:57:40,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:40" (1/1) ... [2022-11-20 18:57:40,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:40" (1/1) ... [2022-11-20 18:57:40,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:40" (1/1) ... [2022-11-20 18:57:40,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:40" (1/1) ... [2022-11-20 18:57:40,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:40" (1/1) ... [2022-11-20 18:57:40,387 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:40" (1/1) ... [2022-11-20 18:57:40,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:40" (1/1) ... [2022-11-20 18:57:40,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 18:57:40,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 18:57:40,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 18:57:40,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 18:57:40,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:40" (1/1) ... [2022-11-20 18:57:40,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:57:40,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:57:40,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 18:57:40,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 18:57:40,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 18:57:40,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 18:57:40,928 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 18:57:40,930 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 18:57:59,575 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 18:57:59,601 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 18:57:59,602 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 18:57:59,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:59 BoogieIcfgContainer [2022-11-20 18:57:59,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 18:57:59,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 18:57:59,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 18:57:59,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 18:57:59,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:57:39" (1/3) ... [2022-11-20 18:57:59,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736a0814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:57:59, skipping insertion in model container [2022-11-20 18:57:59,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:40" (2/3) ... [2022-11-20 18:57:59,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736a0814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:57:59, skipping insertion in model container [2022-11-20 18:57:59,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:59" (3/3) ... [2022-11-20 18:57:59,620 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p02.c [2022-11-20 18:57:59,643 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 18:57:59,643 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 18:57:59,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 18:57:59,729 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;@377a7b86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 18:57:59,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 18:57:59,735 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) [2022-11-20 18:57:59,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 18:57:59,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:57:59,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 18:57:59,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:57:59,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:57:59,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-20 18:57:59,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:57:59,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306047300] [2022-11-20 18:57:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:57:59,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:58:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 18:58:00,102 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 18:58:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 18:58:00,266 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 18:58:00,268 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 18:58:00,270 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 18:58:00,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 18:58:00,278 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 18:58:00,283 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 18:58:00,306 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 18:58:00,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:58:00 BoogieIcfgContainer [2022-11-20 18:58:00,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 18:58:00,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 18:58:00,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 18:58:00,317 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 18:58:00,318 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:59" (3/4) ... [2022-11-20 18:58:00,321 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 18:58:00,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 18:58:00,323 INFO L158 Benchmark]: Toolchain (without parser) took 21017.65ms. Allocated memory was 172.0MB in the beginning and 448.8MB in the end (delta: 276.8MB). Free memory was 126.1MB in the beginning and 392.7MB in the end (delta: -266.6MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2022-11-20 18:58:00,324 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 121.6MB. Free memory was 63.9MB in the beginning and 63.8MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 18:58:00,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 798.91ms. Allocated memory is still 172.0MB. Free memory was 126.1MB in the beginning and 135.4MB in the end (delta: -9.3MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. [2022-11-20 18:58:00,325 INFO L158 Benchmark]: Boogie Procedure Inliner took 187.85ms. Allocated memory is still 172.0MB. Free memory was 135.4MB in the beginning and 124.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 18:58:00,326 INFO L158 Benchmark]: Boogie Preprocessor took 127.14ms. Allocated memory is still 172.0MB. Free memory was 124.9MB in the beginning and 119.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 18:58:00,327 INFO L158 Benchmark]: RCFGBuilder took 19182.34ms. Allocated memory was 172.0MB in the beginning and 448.8MB in the end (delta: 276.8MB). Free memory was 118.6MB in the beginning and 164.1MB in the end (delta: -45.5MB). Peak memory consumption was 261.7MB. Max. memory is 16.1GB. [2022-11-20 18:58:00,328 INFO L158 Benchmark]: TraceAbstraction took 709.00ms. Allocated memory is still 448.8MB. Free memory was 164.1MB in the beginning and 393.7MB in the end (delta: -229.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-20 18:58:00,328 INFO L158 Benchmark]: Witness Printer took 5.21ms. Allocated memory is still 448.8MB. Free memory was 393.7MB in the beginning and 392.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 18:58:00,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 121.6MB. Free memory was 63.9MB in the beginning and 63.8MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 798.91ms. Allocated memory is still 172.0MB. Free memory was 126.1MB in the beginning and 135.4MB in the end (delta: -9.3MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 187.85ms. Allocated memory is still 172.0MB. Free memory was 135.4MB in the beginning and 124.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 127.14ms. Allocated memory is still 172.0MB. Free memory was 124.9MB in the beginning and 119.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 19182.34ms. Allocated memory was 172.0MB in the beginning and 448.8MB in the end (delta: 276.8MB). Free memory was 118.6MB in the beginning and 164.1MB in the end (delta: -45.5MB). Peak memory consumption was 261.7MB. Max. memory is 16.1GB. * TraceAbstraction took 709.00ms. Allocated memory is still 448.8MB. Free memory was 164.1MB in the beginning and 393.7MB in the end (delta: -229.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 5.21ms. Allocated memory is still 448.8MB. Free memory was 393.7MB in the beginning and 392.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 161, overapproximation of bitwiseAnd at line 147. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 5); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (5 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 12); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (12 - 1); [L34] const SORT_45 mask_SORT_45 = (SORT_45)-1 >> (sizeof(SORT_45) * 8 - 3); [L35] const SORT_45 msb_SORT_45 = (SORT_45)1 << (3 - 1); [L37] const SORT_86 mask_SORT_86 = (SORT_86)-1 >> (sizeof(SORT_86) * 8 - 4); [L38] const SORT_86 msb_SORT_86 = (SORT_86)1 << (4 - 1); [L40] const SORT_143 mask_SORT_143 = (SORT_143)-1 >> (sizeof(SORT_143) * 8 - 32); [L41] const SORT_143 msb_SORT_143 = (SORT_143)1 << (32 - 1); [L43] const SORT_167 mask_SORT_167 = (SORT_167)-1 >> (sizeof(SORT_167) * 8 - 2); [L44] const SORT_167 msb_SORT_167 = (SORT_167)1 << (2 - 1); [L46] const SORT_3 var_7 = 0; [L47] const SORT_1 var_11 = 0; [L48] const SORT_1 var_20 = 1; [L49] const SORT_5 var_32 = 0; [L50] const SORT_45 var_46 = 0; [L51] const SORT_45 var_50 = 2; [L52] const SORT_45 var_54 = 1; [L53] const SORT_45 var_59 = 4; [L54] const SORT_45 var_61 = 5; [L55] const SORT_45 var_65 = 3; [L56] const SORT_3 var_73 = 2; [L57] const SORT_45 var_103 = 7; [L58] const SORT_45 var_108 = 6; [L59] const SORT_143 var_145 = 0; [L60] const SORT_3 var_176 = 31; [L62] SORT_1 input_2; [L63] SORT_3 input_4; [L64] SORT_5 input_6; [L65] SORT_3 input_164; [L66] SORT_3 input_165; [L67] SORT_3 input_166; [L68] SORT_3 input_175; [L69] SORT_3 input_185; [L70] SORT_3 input_186; [L71] SORT_3 input_187; [L72] SORT_3 input_190; [L73] SORT_3 input_209; [L74] SORT_3 input_210; [L75] SORT_3 input_211; [L76] SORT_3 input_214; [L77] SORT_3 input_216; [L78] SORT_167 input_230; [L79] SORT_167 input_231; [L80] SORT_167 input_232; [L82] SORT_3 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L83] SORT_3 state_13 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L84] SORT_3 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L85] SORT_3 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L86] SORT_3 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L87] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_5 state_33 = __VERIFIER_nondet_ushort() & mask_SORT_5; [L89] SORT_3 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L90] SORT_3 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L91] SORT_3 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L92] SORT_3 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L93] SORT_3 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L94] SORT_45 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_45; [L96] SORT_3 init_9_arg_1 = var_7; [L97] state_8 = init_9_arg_1 [L98] SORT_3 init_14_arg_1 = var_7; [L99] state_13 = init_14_arg_1 [L100] SORT_3 init_25_arg_1 = var_7; [L101] state_24 = init_25_arg_1 [L102] SORT_3 init_27_arg_1 = var_7; [L103] state_26 = init_27_arg_1 [L104] SORT_3 init_29_arg_1 = var_7; [L105] state_28 = init_29_arg_1 [L106] SORT_1 init_31_arg_1 = var_11; [L107] state_30 = init_31_arg_1 [L108] SORT_5 init_34_arg_1 = var_32; [L109] state_33 = init_34_arg_1 [L110] SORT_3 init_36_arg_1 = var_7; [L111] state_35 = init_36_arg_1 [L112] SORT_3 init_38_arg_1 = var_7; [L113] state_37 = init_38_arg_1 [L114] SORT_3 init_40_arg_1 = var_7; [L115] state_39 = init_40_arg_1 [L116] SORT_3 init_42_arg_1 = var_7; [L117] state_41 = init_42_arg_1 [L118] SORT_3 init_44_arg_1 = var_7; [L119] state_43 = init_44_arg_1 [L120] SORT_45 init_48_arg_1 = var_46; [L121] state_47 = init_48_arg_1 VAL [init_14_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_48_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_143=4294967295, mask_SORT_167=3, mask_SORT_3=31, mask_SORT_45=7, mask_SORT_5=4095, mask_SORT_86=15, msb_SORT_1=1, msb_SORT_143=2147483648, msb_SORT_167=2, msb_SORT_3=16, msb_SORT_45=4, msb_SORT_5=2048, msb_SORT_86=8, state_13=0, state_24=0, state_26=0, state_28=0, state_30=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_47=0, state_8=0, var_103=7, var_108=6, var_11=0, var_145=0, var_176=31, var_20=1, var_32=0, var_46=0, var_50=2, var_54=1, var_59=4, var_61=5, var_65=3, var_7=0, var_73=2] [L124] input_2 = __VERIFIER_nondet_uchar() [L125] input_4 = __VERIFIER_nondet_uchar() [L126] input_6 = __VERIFIER_nondet_ushort() [L127] input_164 = __VERIFIER_nondet_uchar() [L128] input_165 = __VERIFIER_nondet_uchar() [L129] input_166 = __VERIFIER_nondet_uchar() [L130] input_175 = __VERIFIER_nondet_uchar() [L131] input_185 = __VERIFIER_nondet_uchar() [L132] input_186 = __VERIFIER_nondet_uchar() [L133] input_187 = __VERIFIER_nondet_uchar() [L134] input_190 = __VERIFIER_nondet_uchar() [L135] input_209 = __VERIFIER_nondet_uchar() [L136] input_210 = __VERIFIER_nondet_uchar() [L137] input_211 = __VERIFIER_nondet_uchar() [L138] input_214 = __VERIFIER_nondet_uchar() [L139] input_216 = __VERIFIER_nondet_uchar() [L140] input_230 = __VERIFIER_nondet_uchar() [L141] input_231 = __VERIFIER_nondet_uchar() [L142] input_232 = __VERIFIER_nondet_uchar() [L145] SORT_3 var_10_arg_0 = state_8; [L146] SORT_1 var_10 = var_10_arg_0 >> 0; [L147] var_10 = var_10 & mask_SORT_1 [L148] SORT_1 var_12_arg_0 = var_10; [L149] SORT_1 var_12_arg_1 = var_11; [L150] SORT_1 var_12 = var_12_arg_0 == var_12_arg_1; [L151] SORT_3 var_15_arg_0 = state_13; [L152] SORT_1 var_15 = var_15_arg_0 >> 0; [L153] var_15 = var_15 & mask_SORT_1 [L154] SORT_1 var_16_arg_0 = var_15; [L155] SORT_1 var_16_arg_1 = var_11; [L156] SORT_1 var_16 = var_16_arg_0 == var_16_arg_1; [L157] SORT_1 var_17_arg_0 = var_12; [L158] SORT_1 var_17_arg_1 = var_16; [L159] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L160] SORT_1 var_21_arg_0 = var_17; [L161] SORT_1 var_21 = ~var_21_arg_0; [L162] SORT_1 var_22_arg_0 = var_20; [L163] SORT_1 var_22_arg_1 = var_21; [L164] SORT_1 var_22 = var_22_arg_0 & var_22_arg_1; [L165] var_22 = var_22 & mask_SORT_1 [L166] SORT_1 bad_23_arg_0 = var_22; [L167] CALL __VERIFIER_assert(!(bad_23_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 18:58:00,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/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_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9 --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 2f1d80befaa77be0a079109a635df23085fa7ccf7b1b752044bebae6779c0281 --- 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-6b4ec56 [2022-11-20 18:58:03,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 18:58:03,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 18:58:03,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 18:58:03,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 18:58:03,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 18:58:03,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 18:58:03,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 18:58:03,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 18:58:03,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 18:58:03,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 18:58:03,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 18:58:03,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 18:58:03,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 18:58:03,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 18:58:03,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 18:58:03,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 18:58:03,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 18:58:03,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 18:58:03,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 18:58:03,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 18:58:03,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 18:58:03,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 18:58:03,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 18:58:03,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 18:58:03,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 18:58:03,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 18:58:03,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 18:58:03,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 18:58:03,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 18:58:03,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 18:58:03,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 18:58:03,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 18:58:03,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 18:58:03,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 18:58:03,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 18:58:03,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 18:58:03,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 18:58:03,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 18:58:03,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 18:58:03,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 18:58:03,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-20 18:58:03,191 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 18:58:03,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 18:58:03,194 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 18:58:03,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 18:58:03,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 18:58:03,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 18:58:03,196 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 18:58:03,196 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 18:58:03,196 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 18:58:03,197 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 18:58:03,197 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 18:58:03,197 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 18:58:03,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 18:58:03,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 18:58:03,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 18:58:03,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 18:58:03,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 18:58:03,199 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 18:58:03,199 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 18:58:03,199 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 18:58:03,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 18:58:03,200 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 18:58:03,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 18:58:03,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 18:58:03,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 18:58:03,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 18:58:03,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:58:03,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 18:58:03,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 18:58:03,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 18:58:03,202 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 18:58:03,202 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 18:58:03,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 18:58:03,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 18:58:03,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 18:58:03,204 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_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1d80befaa77be0a079109a635df23085fa7ccf7b1b752044bebae6779c0281 [2022-11-20 18:58:03,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 18:58:03,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 18:58:03,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 18:58:03,669 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 18:58:03,669 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 18:58:03,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p02.c [2022-11-20 18:58:07,018 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 18:58:07,377 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 18:58:07,378 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p02.c [2022-11-20 18:58:07,422 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/data/39d284eb3/9faff7726a89447ea5e5ba82b16f1ba5/FLAG367e4b5a9 [2022-11-20 18:58:07,452 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/data/39d284eb3/9faff7726a89447ea5e5ba82b16f1ba5 [2022-11-20 18:58:07,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 18:58:07,457 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 18:58:07,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 18:58:07,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 18:58:07,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 18:58:07,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:58:07" (1/1) ... [2022-11-20 18:58:07,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d49f13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:07, skipping insertion in model container [2022-11-20 18:58:07,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:58:07" (1/1) ... [2022-11-20 18:58:07,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 18:58:07,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 18:58:07,802 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p02.c[1107,1120] [2022-11-20 18:58:08,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:58:08,095 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 18:58:08,108 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p02.c[1107,1120] [2022-11-20 18:58:08,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:58:08,309 INFO L208 MainTranslator]: Completed translation [2022-11-20 18:58:08,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:08 WrapperNode [2022-11-20 18:58:08,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 18:58:08,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 18:58:08,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 18:58:08,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 18:58:08,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:08" (1/1) ... [2022-11-20 18:58:08,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:08" (1/1) ... [2022-11-20 18:58:08,413 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1034 [2022-11-20 18:58:08,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 18:58:08,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 18:58:08,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 18:58:08,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 18:58:08,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:08" (1/1) ... [2022-11-20 18:58:08,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:08" (1/1) ... [2022-11-20 18:58:08,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:08" (1/1) ... [2022-11-20 18:58:08,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:08" (1/1) ... [2022-11-20 18:58:08,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:08" (1/1) ... [2022-11-20 18:58:08,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:08" (1/1) ... [2022-11-20 18:58:08,471 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:08" (1/1) ... [2022-11-20 18:58:08,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:08" (1/1) ... [2022-11-20 18:58:08,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 18:58:08,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 18:58:08,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 18:58:08,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 18:58:08,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:08" (1/1) ... [2022-11-20 18:58:08,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:58:08,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:58:08,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 18:58:08,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 18:58:08,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 18:58:08,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 18:58:09,061 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 18:58:09,064 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 18:58:10,605 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 18:58:10,612 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 18:58:10,613 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 18:58:10,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:58:10 BoogieIcfgContainer [2022-11-20 18:58:10,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 18:58:10,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 18:58:10,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 18:58:10,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 18:58:10,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:58:07" (1/3) ... [2022-11-20 18:58:10,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b97913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:58:10, skipping insertion in model container [2022-11-20 18:58:10,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:58:08" (2/3) ... [2022-11-20 18:58:10,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b97913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:58:10, skipping insertion in model container [2022-11-20 18:58:10,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:58:10" (3/3) ... [2022-11-20 18:58:10,631 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p02.c [2022-11-20 18:58:10,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 18:58:10,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 18:58:10,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 18:58:10,732 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;@4029b8d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 18:58:10,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 18:58:10,737 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) [2022-11-20 18:58:10,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 18:58:10,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:58:10,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 18:58:10,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:58:10,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:58:10,754 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-20 18:58:10,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:58:10,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911277116] [2022-11-20 18:58:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:10,775 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 [2022-11-20 18:58:10,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:58:10,781 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 18:58:10,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 18:58:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:11,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 18:58:11,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:11,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:11,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 18:58:11,332 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 18:58:11,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911277116] [2022-11-20 18:58:11,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911277116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:58:11,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:58:11,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 18:58:11,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799823476] [2022-11-20 18:58:11,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:58:11,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 18:58:11,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 18:58:11,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 18:58:11,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 18:58:11,373 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) [2022-11-20 18:58:11,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:58:11,546 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-20 18:58:11,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 18:58:11,548 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 [2022-11-20 18:58:11,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:58:11,557 INFO L225 Difference]: With dead ends: 20 [2022-11-20 18:58:11,557 INFO L226 Difference]: Without dead ends: 11 [2022-11-20 18:58:11,560 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 [2022-11-20 18:58:11,564 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 [2022-11-20 18:58:11,566 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] [2022-11-20 18:58:11,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-20 18:58:11,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-20 18:58:11,616 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) [2022-11-20 18:58:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-20 18:58:11,618 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-20 18:58:11,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:58:11,619 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-20 18:58:11,619 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) [2022-11-20 18:58:11,619 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-20 18:58:11,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 18:58:11,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:58:11,620 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-20 18:58:11,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 18:58:11,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 18:58:11,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:58:11,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:58:11,828 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-20 18:58:11,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:58:11,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087744088] [2022-11-20 18:58:11,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:11,832 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 [2022-11-20 18:58:11,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:58:11,833 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 18:58:11,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 18:58:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:12,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-20 18:58:12,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:12,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:14,231 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 18:58:14,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087744088] [2022-11-20 18:58:14,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087744088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:14,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1665127120] [2022-11-20 18:58:14,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:14,238 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 18:58:14,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 18:58:14,241 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 18:58:14,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-20 18:58:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:15,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-20 18:58:15,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:15,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:15,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:16,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:16,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1665127120] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:16,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969889541] [2022-11-20 18:58:16,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:16,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:58:16,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:58:16,406 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 18:58:16,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 18:58:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:16,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-20 18:58:16,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:17,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:17,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:18,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:18,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969889541] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:18,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 18:58:18,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 13 [2022-11-20 18:58:18,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008831531] [2022-11-20 18:58:18,968 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 18:58:18,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 18:58:18,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 18:58:18,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 18:58:18,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-20 18:58:18,971 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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) [2022-11-20 18:58:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:58:19,452 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-20 18:58:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 18:58:19,453 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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 [2022-11-20 18:58:19,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:58:19,453 INFO L225 Difference]: With dead ends: 16 [2022-11-20 18:58:19,453 INFO L226 Difference]: Without dead ends: 14 [2022-11-20 18:58:19,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-20 18:58:19,455 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 18:58:19,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 17 Unchecked, 0.3s Time] [2022-11-20 18:58:19,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-20 18:58:19,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-20 18:58:19,460 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) [2022-11-20 18:58:19,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-20 18:58:19,461 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-20 18:58:19,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:58:19,461 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-20 18:58:19,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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) [2022-11-20 18:58:19,462 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-20 18:58:19,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 18:58:19,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:58:19,463 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-20 18:58:19,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 18:58:19,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:19,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:20,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:58:20,080 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:58:20,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:58:20,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-20 18:58:20,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:58:20,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383790509] [2022-11-20 18:58:20,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 18:58:20,086 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 [2022-11-20 18:58:20,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:58:20,089 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 18:58:20,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 18:58:20,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 18:58:20,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 18:58:20,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-20 18:58:20,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:21,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:24,888 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 18:58:24,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383790509] [2022-11-20 18:58:24,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383790509] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:24,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1795139728] [2022-11-20 18:58:24,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 18:58:24,889 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 18:58:24,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 18:58:24,891 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 18:58:24,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-20 18:58:26,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 18:58:26,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 18:58:26,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-20 18:58:26,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:27,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:27,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:28,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1795139728] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:28,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202451588] [2022-11-20 18:58:28,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 18:58:28,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:58:28,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:58:28,719 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 18:58:28,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 18:58:29,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 18:58:29,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 18:58:29,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 130 conjunts are in the unsatisfiable core [2022-11-20 18:58:29,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:30,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:47,892 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification. DAG size of input: 333 DAG size of output: 206 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 18:58:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:48,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202451588] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:48,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 18:58:48,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 9, 9] total 22 [2022-11-20 18:58:48,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413226316] [2022-11-20 18:58:48,963 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 18:58:48,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 18:58:48,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 18:58:48,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 18:58:48,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-11-20 18:58:48,965 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 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) [2022-11-20 18:58:49,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:58:49,992 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-20 18:58:49,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 18:58:49,993 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 18:58:49,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:58:49,993 INFO L225 Difference]: With dead ends: 19 [2022-11-20 18:58:49,993 INFO L226 Difference]: Without dead ends: 17 [2022-11-20 18:58:49,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2022-11-20 18:58:49,995 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 18:58:49,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 32 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 46 Unchecked, 0.5s Time] [2022-11-20 18:58:49,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-20 18:58:50,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-20 18:58:50,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:58:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-20 18:58:50,002 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-20 18:58:50,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:58:50,003 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-20 18:58:50,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 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) [2022-11-20 18:58:50,004 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-20 18:58:50,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 18:58:50,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:58:50,005 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-20 18:58:50,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:50,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:50,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:50,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:58:50,618 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:58:50,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:58:50,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-20 18:58:50,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:58:50,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522192544] [2022-11-20 18:58:50,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 18:58:50,621 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 [2022-11-20 18:58:50,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:58:50,623 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 18:58:50,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db4f509-335d-4709-b5bd-583862175ac2/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 18:58:51,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 18:58:51,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 18:58:51,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 2638 conjuncts, 225 conjunts are in the unsatisfiable core [2022-11-20 18:58:51,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:59:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:59:11,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:03:40,166 WARN L233 SmtUtils]: Spent 41.08s on a formula simplification. DAG size of input: 1122 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)