./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p11.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 747a2c159d62537de427b2f65a7938949fd6f9566a5bb96f86ae429c50298da5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:07:46,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:07:46,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:07:46,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:07:46,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:07:46,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:07:46,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:07:46,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:07:46,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:07:46,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:07:46,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:07:46,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:07:46,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:07:46,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:07:46,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:07:46,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:07:46,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:07:46,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:07:46,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:07:46,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:07:46,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:07:46,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:07:46,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:07:46,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:07:46,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:07:46,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:07:46,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:07:46,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:07:46,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:07:46,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:07:46,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:07:46,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:07:46,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:07:46,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:07:46,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:07:46,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:07:46,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:07:46,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:07:46,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:07:46,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:07:46,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:07:46,430 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:07:46,451 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:07:46,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:07:46,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:07:46,452 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:07:46,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:07:46,453 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:07:46,453 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:07:46,454 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:07:46,454 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:07:46,454 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:07:46,454 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:07:46,454 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:07:46,455 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:07:46,455 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:07:46,455 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:07:46,455 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:07:46,456 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:07:46,456 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:07:46,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:07:46,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:07:46,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:07:46,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:07:46,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:07:46,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:07:46,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:07:46,458 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:07:46,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:07:46,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:07:46,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:07:46,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:07:46,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:07:46,459 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:07:46,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:07:46,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:07:46,460 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:07:46,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:07:46,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:07:46,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:07:46,461 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_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 747a2c159d62537de427b2f65a7938949fd6f9566a5bb96f86ae429c50298da5 [2022-11-23 15:07:46,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:07:46,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:07:46,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:07:46,737 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:07:46,738 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:07:46,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p11.c [2022-11-23 15:07:49,782 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:07:50,131 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:07:50,132 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p11.c [2022-11-23 15:07:50,145 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/data/fbf8eb3cb/e7ca18ea79cc42a2a1aafb64b49120f9/FLAG44a052c62 [2022-11-23 15:07:50,158 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/data/fbf8eb3cb/e7ca18ea79cc42a2a1aafb64b49120f9 [2022-11-23 15:07:50,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:07:50,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:07:50,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:07:50,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:07:50,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:07:50,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:07:50" (1/1) ... [2022-11-23 15:07:50,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8eeb01d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:50, skipping insertion in model container [2022-11-23 15:07:50,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:07:50" (1/1) ... [2022-11-23 15:07:50,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:07:50,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:07:50,434 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_bb10a6d8-3f72-4236-b405-8d0983ab4873/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p11.c[1107,1120] [2022-11-23 15:07:50,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:07:50,719 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:07:50,734 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_bb10a6d8-3f72-4236-b405-8d0983ab4873/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p11.c[1107,1120] [2022-11-23 15:07:50,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:07:50,872 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:07:50,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:50 WrapperNode [2022-11-23 15:07:50,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:07:50,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:07:50,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:07:50,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:07:50,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:50" (1/1) ... [2022-11-23 15:07:50,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:50" (1/1) ... [2022-11-23 15:07:50,998 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1053 [2022-11-23 15:07:50,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:07:51,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:07:51,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:07:51,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:07:51,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:50" (1/1) ... [2022-11-23 15:07:51,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:50" (1/1) ... [2022-11-23 15:07:51,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:50" (1/1) ... [2022-11-23 15:07:51,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:50" (1/1) ... [2022-11-23 15:07:51,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:50" (1/1) ... [2022-11-23 15:07:51,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:50" (1/1) ... [2022-11-23 15:07:51,084 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:50" (1/1) ... [2022-11-23 15:07:51,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:50" (1/1) ... [2022-11-23 15:07:51,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:07:51,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:07:51,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:07:51,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:07:51,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:50" (1/1) ... [2022-11-23 15:07:51,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:07:51,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:07:51,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:07:51,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:07:51,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:07:51,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:07:51,473 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:07:51,475 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:08:10,372 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:08:10,396 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:08:10,397 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:08:10,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:10 BoogieIcfgContainer [2022-11-23 15:08:10,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:08:10,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:08:10,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:08:10,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:08:10,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:07:50" (1/3) ... [2022-11-23 15:08:10,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4351a489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:08:10, skipping insertion in model container [2022-11-23 15:08:10,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:50" (2/3) ... [2022-11-23 15:08:10,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4351a489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:08:10, skipping insertion in model container [2022-11-23 15:08:10,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:10" (3/3) ... [2022-11-23 15:08:10,408 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p11.c [2022-11-23 15:08:10,427 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:08:10,436 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:08:10,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:08:10,508 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;@5704d9b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:08:10,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:08:10,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:08:10,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:08:10,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:08:10,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:08:10,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:08:10,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:08:10,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1797488, now seen corresponding path program 1 times [2022-11-23 15:08:10,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:08:10,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097552035] [2022-11-23 15:08:10,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:10,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:08:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:08:10,951 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:08:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:08:11,162 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:08:11,164 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:08:11,166 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:08:11,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:08:11,174 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 15:08:11,178 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:08:11,210 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 15:08:11,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:08:11 BoogieIcfgContainer [2022-11-23 15:08:11,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:08:11,221 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:08:11,221 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:08:11,221 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:08:11,226 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:10" (3/4) ... [2022-11-23 15:08:11,233 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:08:11,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:08:11,236 INFO L158 Benchmark]: Toolchain (without parser) took 21073.50ms. Allocated memory was 169.9MB in the beginning and 553.6MB in the end (delta: 383.8MB). Free memory was 136.8MB in the beginning and 199.6MB in the end (delta: -62.8MB). Peak memory consumption was 322.9MB. Max. memory is 16.1GB. [2022-11-23 15:08:11,237 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:08:11,238 INFO L158 Benchmark]: CACSL2BoogieTranslator took 709.50ms. Allocated memory is still 169.9MB. Free memory was 136.1MB in the beginning and 99.9MB in the end (delta: 36.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-23 15:08:11,239 INFO L158 Benchmark]: Boogie Procedure Inliner took 125.53ms. Allocated memory is still 169.9MB. Free memory was 99.9MB in the beginning and 88.7MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 15:08:11,240 INFO L158 Benchmark]: Boogie Preprocessor took 99.98ms. Allocated memory is still 169.9MB. Free memory was 88.7MB in the beginning and 83.1MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:08:11,245 INFO L158 Benchmark]: RCFGBuilder took 19298.92ms. Allocated memory was 169.9MB in the beginning and 553.6MB in the end (delta: 383.8MB). Free memory was 83.1MB in the beginning and 254.1MB in the end (delta: -171.0MB). Peak memory consumption was 296.4MB. Max. memory is 16.1GB. [2022-11-23 15:08:11,248 INFO L158 Benchmark]: TraceAbstraction took 818.76ms. Allocated memory is still 553.6MB. Free memory was 254.1MB in the beginning and 199.6MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-11-23 15:08:11,252 INFO L158 Benchmark]: Witness Printer took 13.52ms. Allocated memory is still 553.6MB. Free memory is still 199.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:08:11,257 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 709.50ms. Allocated memory is still 169.9MB. Free memory was 136.1MB in the beginning and 99.9MB in the end (delta: 36.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 125.53ms. Allocated memory is still 169.9MB. Free memory was 99.9MB in the beginning and 88.7MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 99.98ms. Allocated memory is still 169.9MB. Free memory was 88.7MB in the beginning and 83.1MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 19298.92ms. Allocated memory was 169.9MB in the beginning and 553.6MB in the end (delta: 383.8MB). Free memory was 83.1MB in the beginning and 254.1MB in the end (delta: -171.0MB). Peak memory consumption was 296.4MB. Max. memory is 16.1GB. * TraceAbstraction took 818.76ms. Allocated memory is still 553.6MB. Free memory was 254.1MB in the beginning and 199.6MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * Witness Printer took 13.52ms. Allocated memory is still 553.6MB. Free memory is still 199.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 173, overapproximation of bitwiseOr at line 185, overapproximation of bitwiseAnd at line 147. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 5); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (5 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 12); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (12 - 1); [L34] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 3); [L35] const SORT_10 msb_SORT_10 = (SORT_10)1 << (3 - 1); [L37] const SORT_18 mask_SORT_18 = (SORT_18)-1 >> (sizeof(SORT_18) * 8 - 2); [L38] const SORT_18 msb_SORT_18 = (SORT_18)1 << (2 - 1); [L40] const SORT_84 mask_SORT_84 = (SORT_84)-1 >> (sizeof(SORT_84) * 8 - 4); [L41] const SORT_84 msb_SORT_84 = (SORT_84)1 << (4 - 1); [L43] const SORT_148 mask_SORT_148 = (SORT_148)-1 >> (sizeof(SORT_148) * 8 - 32); [L44] const SORT_148 msb_SORT_148 = (SORT_148)1 << (32 - 1); [L46] const SORT_5 var_7 = 0; [L47] const SORT_10 var_12 = 3; [L48] const SORT_10 var_15 = 1; [L49] const SORT_10 var_24 = 0; [L50] const SORT_1 var_28 = 0; [L51] const SORT_3 var_30 = 0; [L52] const SORT_1 var_38 = 1; [L53] const SORT_10 var_62 = 2; [L54] const SORT_10 var_70 = 4; [L55] const SORT_10 var_72 = 5; [L56] const SORT_10 var_100 = 7; [L57] const SORT_10 var_105 = 6; [L58] const SORT_148 var_150 = 0; [L59] const SORT_3 var_165 = 2; [L60] const SORT_3 var_187 = 31; [L62] SORT_1 input_2; [L63] SORT_3 input_4; [L64] SORT_5 input_6; [L65] SORT_3 input_176; [L66] SORT_3 input_177; [L67] SORT_3 input_178; [L68] SORT_3 input_186; [L69] SORT_3 input_195; [L70] SORT_3 input_196; [L71] SORT_3 input_197; [L72] SORT_3 input_200; [L73] SORT_3 input_219; [L74] SORT_3 input_220; [L75] SORT_3 input_221; [L76] SORT_3 input_224; [L77] SORT_3 input_226; [L78] SORT_18 input_240; [L79] SORT_18 input_241; [L80] SORT_18 input_242; [L82] SORT_5 state_8 = __VERIFIER_nondet_ushort() & mask_SORT_5; [L83] SORT_10 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L84] SORT_3 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L85] SORT_3 state_42 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L86] SORT_3 state_44 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L87] SORT_1 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_3 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L89] SORT_3 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L90] SORT_3 state_52 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L91] SORT_3 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L92] SORT_3 state_56 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L93] SORT_3 state_58 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L94] SORT_3 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L96] SORT_5 init_9_arg_1 = var_7; [L97] state_8 = init_9_arg_1 [L98] SORT_10 init_26_arg_1 = var_24; [L99] state_25 = init_26_arg_1 [L100] SORT_3 init_32_arg_1 = var_30; [L101] state_31 = init_32_arg_1 [L102] SORT_3 init_43_arg_1 = var_30; [L103] state_42 = init_43_arg_1 [L104] SORT_3 init_45_arg_1 = var_30; [L105] state_44 = init_45_arg_1 [L106] SORT_1 init_47_arg_1 = var_28; [L107] state_46 = init_47_arg_1 [L108] SORT_3 init_49_arg_1 = var_30; [L109] state_48 = init_49_arg_1 [L110] SORT_3 init_51_arg_1 = var_30; [L111] state_50 = init_51_arg_1 [L112] SORT_3 init_53_arg_1 = var_30; [L113] state_52 = init_53_arg_1 [L114] SORT_3 init_55_arg_1 = var_30; [L115] state_54 = init_55_arg_1 [L116] SORT_3 init_57_arg_1 = var_30; [L117] state_56 = init_57_arg_1 [L118] SORT_3 init_59_arg_1 = var_30; [L119] state_58 = init_59_arg_1 [L120] SORT_3 init_61_arg_1 = var_30; [L121] state_60 = init_61_arg_1 VAL [init_26_arg_1=0, init_32_arg_1=0, init_43_arg_1=0, init_45_arg_1=0, init_47_arg_1=0, init_49_arg_1=0, init_51_arg_1=0, init_53_arg_1=0, init_55_arg_1=0, init_57_arg_1=0, init_59_arg_1=0, init_61_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=7, mask_SORT_148=4294967295, mask_SORT_18=3, mask_SORT_3=31, mask_SORT_5=4095, mask_SORT_84=15, msb_SORT_1=1, msb_SORT_10=4, msb_SORT_148=2147483648, msb_SORT_18=2, msb_SORT_3=16, msb_SORT_5=2048, msb_SORT_84=8, state_25=0, state_31=0, state_42=0, state_44=0, state_46=0, state_48=0, state_50=0, state_52=0, state_54=0, state_56=0, state_58=0, state_60=0, state_8=0, var_100=7, var_105=6, var_12=3, var_15=1, var_150=0, var_165=2, var_187=31, var_24=0, var_28=0, var_30=0, var_38=1, var_62=2, var_7=0, var_70=4, var_72=5] [L124] input_2 = __VERIFIER_nondet_uchar() [L125] input_4 = __VERIFIER_nondet_uchar() [L126] input_6 = __VERIFIER_nondet_ushort() [L127] input_176 = __VERIFIER_nondet_uchar() [L128] input_177 = __VERIFIER_nondet_uchar() [L129] input_178 = __VERIFIER_nondet_uchar() [L130] input_186 = __VERIFIER_nondet_uchar() [L131] input_195 = __VERIFIER_nondet_uchar() [L132] input_196 = __VERIFIER_nondet_uchar() [L133] input_197 = __VERIFIER_nondet_uchar() [L134] input_200 = __VERIFIER_nondet_uchar() [L135] input_219 = __VERIFIER_nondet_uchar() [L136] input_220 = __VERIFIER_nondet_uchar() [L137] input_221 = __VERIFIER_nondet_uchar() [L138] input_224 = __VERIFIER_nondet_uchar() [L139] input_226 = __VERIFIER_nondet_uchar() [L140] input_240 = __VERIFIER_nondet_uchar() [L141] input_241 = __VERIFIER_nondet_uchar() [L142] input_242 = __VERIFIER_nondet_uchar() [L145] SORT_5 var_11_arg_0 = state_8; [L146] SORT_10 var_11 = var_11_arg_0 >> 9; [L147] var_11 = var_11 & mask_SORT_10 [L148] SORT_10 var_13_arg_0 = var_11; [L149] SORT_10 var_13_arg_1 = var_12; [L150] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L151] SORT_5 var_14_arg_0 = state_8; [L152] SORT_10 var_14 = var_14_arg_0 >> 0; [L153] var_14 = var_14 & mask_SORT_10 [L154] SORT_10 var_16_arg_0 = var_14; [L155] SORT_10 var_16_arg_1 = var_15; [L156] SORT_1 var_16 = var_16_arg_0 == var_16_arg_1; [L157] SORT_1 var_17_arg_0 = var_13; [L158] SORT_1 var_17_arg_1 = var_16; [L159] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L160] SORT_5 var_19_arg_0 = state_8; [L161] SORT_18 var_19 = var_19_arg_0 >> 7; [L162] var_19 = var_19 & mask_SORT_18 [L163] SORT_5 var_20_arg_0 = state_8; [L164] SORT_18 var_20 = var_20_arg_0 >> 5; [L165] var_20 = var_20 & mask_SORT_18 [L166] SORT_18 var_21_arg_0 = var_19; [L167] SORT_18 var_21_arg_1 = var_20; [L168] SORT_1 var_21 = var_21_arg_0 == var_21_arg_1; [L169] SORT_1 var_22_arg_0 = var_17; [L170] SORT_1 var_22_arg_1 = var_21; [L171] SORT_1 var_22 = var_22_arg_0 & var_22_arg_1; [L172] SORT_1 var_23_arg_0 = var_22; [L173] SORT_1 var_23 = ~var_23_arg_0; [L174] SORT_10 var_27_arg_0 = state_25; [L175] SORT_1 var_27 = var_27_arg_0 >> 2; [L176] var_27 = var_27 & mask_SORT_1 [L177] SORT_1 var_29_arg_0 = var_27; [L178] SORT_1 var_29_arg_1 = var_28; [L179] SORT_1 var_29 = var_29_arg_0 == var_29_arg_1; [L180] SORT_3 var_33_arg_0 = state_31; [L181] SORT_3 var_33_arg_1 = var_30; [L182] SORT_1 var_33 = var_33_arg_0 == var_33_arg_1; [L183] SORT_1 var_34_arg_0 = var_29; [L184] SORT_1 var_34_arg_1 = var_33; [L185] SORT_1 var_34 = var_34_arg_0 | var_34_arg_1; [L186] SORT_1 var_35_arg_0 = var_23; [L187] SORT_1 var_35_arg_1 = var_34; [L188] SORT_1 var_35 = var_35_arg_0 | var_35_arg_1; [L189] SORT_1 var_39_arg_0 = var_35; [L190] SORT_1 var_39 = ~var_39_arg_0; [L191] SORT_1 var_40_arg_0 = var_38; [L192] SORT_1 var_40_arg_1 = var_39; [L193] SORT_1 var_40 = var_40_arg_0 & var_40_arg_1; [L194] var_40 = var_40 & mask_SORT_1 [L195] SORT_1 bad_41_arg_0 = var_40; [L196] CALL __VERIFIER_assert(!(bad_41_arg_0)) [L20] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L20] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 15:08:11,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 747a2c159d62537de427b2f65a7938949fd6f9566a5bb96f86ae429c50298da5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:08:13,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:08:13,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:08:13,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:08:13,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:08:13,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:08:13,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:08:13,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:08:13,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:08:13,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:08:13,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:08:13,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:08:13,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:08:13,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:08:13,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:08:13,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:08:13,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:08:13,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:08:13,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:08:13,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:08:13,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:08:13,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:08:13,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:08:13,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:08:13,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:08:13,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:08:13,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:08:13,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:08:13,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:08:13,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:08:13,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:08:13,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:08:13,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:08:13,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:08:13,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:08:13,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:08:13,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:08:13,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:08:13,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:08:14,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:08:14,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:08:14,004 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-23 15:08:14,047 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:08:14,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:08:14,060 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:08:14,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:08:14,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:08:14,062 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:08:14,062 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:08:14,062 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:08:14,062 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:08:14,063 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:08:14,064 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:08:14,064 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:08:14,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:08:14,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:08:14,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:08:14,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:08:14,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:08:14,067 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:08:14,067 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:08:14,068 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:08:14,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:08:14,068 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:08:14,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:08:14,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:08:14,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:08:14,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:08:14,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:08:14,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:08:14,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:08:14,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:08:14,070 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:08:14,071 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:08:14,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:08:14,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:08:14,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:08:14,072 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_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 747a2c159d62537de427b2f65a7938949fd6f9566a5bb96f86ae429c50298da5 [2022-11-23 15:08:14,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:08:14,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:08:14,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:08:14,521 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:08:14,521 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:08:14,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p11.c [2022-11-23 15:08:17,697 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:08:18,050 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:08:18,051 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p11.c [2022-11-23 15:08:18,066 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/data/302ce4302/e6ac1c5b27b040aa99205700d6a3a788/FLAGe1c4d06e4 [2022-11-23 15:08:18,086 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/data/302ce4302/e6ac1c5b27b040aa99205700d6a3a788 [2022-11-23 15:08:18,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:08:18,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:08:18,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:08:18,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:08:18,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:08:18,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:08:18" (1/1) ... [2022-11-23 15:08:18,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8014b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:18, skipping insertion in model container [2022-11-23 15:08:18,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:08:18" (1/1) ... [2022-11-23 15:08:18,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:08:18,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:08:18,344 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_bb10a6d8-3f72-4236-b405-8d0983ab4873/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p11.c[1107,1120] [2022-11-23 15:08:18,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:08:18,610 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:08:18,621 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_bb10a6d8-3f72-4236-b405-8d0983ab4873/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p11.c[1107,1120] [2022-11-23 15:08:18,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:08:18,777 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:08:18,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:18 WrapperNode [2022-11-23 15:08:18,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:08:18,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:08:18,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:08:18,790 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:08:18,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:18" (1/1) ... [2022-11-23 15:08:18,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:18" (1/1) ... [2022-11-23 15:08:18,923 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1053 [2022-11-23 15:08:18,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:08:18,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:08:18,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:08:18,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:08:18,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:18" (1/1) ... [2022-11-23 15:08:18,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:18" (1/1) ... [2022-11-23 15:08:18,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:18" (1/1) ... [2022-11-23 15:08:18,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:18" (1/1) ... [2022-11-23 15:08:18,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:18" (1/1) ... [2022-11-23 15:08:18,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:18" (1/1) ... [2022-11-23 15:08:18,977 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:18" (1/1) ... [2022-11-23 15:08:18,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:18" (1/1) ... [2022-11-23 15:08:18,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:08:18,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:08:18,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:08:18,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:08:18,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:18" (1/1) ... [2022-11-23 15:08:18,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:08:19,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:08:19,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:08:19,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:08:19,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:08:19,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:08:19,527 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:08:19,531 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:08:20,913 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:08:20,927 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:08:20,928 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:08:20,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:20 BoogieIcfgContainer [2022-11-23 15:08:20,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:08:20,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:08:20,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:08:20,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:08:20,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:08:18" (1/3) ... [2022-11-23 15:08:20,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ccaace5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:08:20, skipping insertion in model container [2022-11-23 15:08:20,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:18" (2/3) ... [2022-11-23 15:08:20,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ccaace5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:08:20, skipping insertion in model container [2022-11-23 15:08:20,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:20" (3/3) ... [2022-11-23 15:08:20,943 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p11.c [2022-11-23 15:08:20,963 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:08:20,963 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:08:21,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:08:21,037 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;@154dea33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:08:21,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:08:21,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:08:21,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:08:21,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:08:21,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:08:21,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:08:21,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:08:21,061 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-23 15:08:21,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:08:21,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360373492] [2022-11-23 15:08:21,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:21,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:08:21,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:08:21,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:08:21,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 15:08:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:08:21,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-23 15:08:21,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:08:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:08:21,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:08:21,610 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:08:21,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360373492] [2022-11-23 15:08:21,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360373492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:08:21,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:08:21,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:08:21,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903780346] [2022-11-23 15:08:21,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:08:21,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:08:21,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:08:21,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:08:21,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:08:21,675 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:08:21,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:08:21,907 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-23 15:08:21,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:08:21,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 15:08:21,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:08:21,918 INFO L225 Difference]: With dead ends: 20 [2022-11-23 15:08:21,918 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 15:08:21,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:08:21,924 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:08:21,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:08:21,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 15:08:21,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-23 15:08:21,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:08:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 15:08:21,958 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 15:08:21,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:08:21,959 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 15:08:21,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:08:21,960 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 15:08:21,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:08:21,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:08:21,961 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 15:08:22,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:08:22,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:08:22,173 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:08:22,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:08:22,174 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-23 15:08:22,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:08:22,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705229636] [2022-11-23 15:08:22,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:22,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:08:22,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:08:22,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:08:22,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 15:08:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:08:22,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-23 15:08:22,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:08:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:08:23,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:08:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:08:23,880 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:08:23,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705229636] [2022-11-23 15:08:23,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705229636] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:08:23,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1397370328] [2022-11-23 15:08:23,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:23,887 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:08:23,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:08:23,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:08:23,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-23 15:08:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:08:25,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-23 15:08:25,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:08:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:08:25,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:08:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:08:25,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1397370328] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:08:25,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633295064] [2022-11-23 15:08:25,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:08:25,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:08:25,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:08:25,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:08:25,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:08:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:08:26,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-23 15:08:26,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:08:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:08:26,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:08:27,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:08:27,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633295064] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:08:27,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 15:08:27,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 7, 6] total 16 [2022-11-23 15:08:27,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892678410] [2022-11-23 15:08:27,511 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 15:08:27,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 15:08:27,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:08:27,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 15:08:27,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-23 15:08:27,515 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:08:28,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:08:28,575 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-23 15:08:28,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:08:28,577 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 15:08:28,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:08:28,578 INFO L225 Difference]: With dead ends: 19 [2022-11-23 15:08:28,578 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 15:08:28,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2022-11-23 15:08:28,579 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 35 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:08:28,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 29 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 15:08:28,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 15:08:28,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-23 15:08:28,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:08:28,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-23 15:08:28,590 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-23 15:08:28,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:08:28,590 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-23 15:08:28,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:08:28,591 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-23 15:08:28,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 15:08:28,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:08:28,592 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-23 15:08:28,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:08:28,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:08:29,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:08:29,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 15:08:29,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:08:29,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:08:29,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-11-23 15:08:29,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:08:29,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422962187] [2022-11-23 15:08:29,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:08:29,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:08:29,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:08:29,215 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:08:29,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 15:08:30,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:08:30,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:08:30,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 2715 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-23 15:08:30,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:08:30,764 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:08:30,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:08:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:08:35,611 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:08:35,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422962187] [2022-11-23 15:08:35,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422962187] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:08:35,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [849879395] [2022-11-23 15:08:35,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:08:35,613 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:08:35,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:08:35,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:08:35,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-23 15:08:37,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:08:37,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:08:37,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 2715 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-23 15:08:37,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:08:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:08:38,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:08:54,300 WARN L233 SmtUtils]: Spent 14.34s on a formula simplification. DAG size of input: 170 DAG size of output: 166 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:08:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:08:54,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [849879395] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:08:54,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450776258] [2022-11-23 15:08:54,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:08:54,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:08:54,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:08:54,467 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:08:54,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:08:55,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:08:55,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:08:55,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 2715 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-23 15:08:55,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:08:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:08:56,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:09:20,778 WARN L233 SmtUtils]: Spent 16.31s on a formula simplification. DAG size of input: 181 DAG size of output: 174 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:09:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:09:20,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450776258] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:09:20,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 15:09:20,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 9, 8] total 30 [2022-11-23 15:09:20,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873827533] [2022-11-23 15:09:20,921 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 15:09:20,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-23 15:09:20,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:09:20,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-23 15:09:20,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=707, Unknown=2, NotChecked=0, Total=870 [2022-11-23 15:09:20,924 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 30 states, 30 states have (on average 2.3) internal successors, (69), 30 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:09:22,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:09:22,298 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-23 15:09:22,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 15:09:22,299 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 30 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 15:09:22,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:09:22,300 INFO L225 Difference]: With dead ends: 22 [2022-11-23 15:09:22,300 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 15:09:22,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 43.5s TimeCoverageRelationStatistics Valid=238, Invalid=950, Unknown=2, NotChecked=0, Total=1190 [2022-11-23 15:09:22,302 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 29 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:09:22,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 49 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 15:09:22,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 15:09:22,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-23 15:09:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:09:22,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-23 15:09:22,308 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-23 15:09:22,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:09:22,309 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-23 15:09:22,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 30 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:09:22,309 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-23 15:09:22,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:09:22,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:09:22,310 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-23 15:09:22,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-23 15:09:22,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:09:22,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:09:22,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 15:09:22,923 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:09:22,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:09:22,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-11-23 15:09:22,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:09:22,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968830219] [2022-11-23 15:09:22,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:09:22,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:09:22,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:09:22,927 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:09:22,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb10a6d8-3f72-4236-b405-8d0983ab4873/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 15:09:24,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 15:09:24,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:09:24,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 3578 conjuncts, 452 conjunts are in the unsatisfiable core [2022-11-23 15:09:24,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:09:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:09:36,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:10:11,488 WARN L233 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 756 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)