./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.7.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.7.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI --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 f706846995a459967b03ffd82a5fc7d6a479aa02be4ed6119cde7c985ad25459 --- 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-5e519f3 [2022-11-03 02:14:43,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:14:43,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:14:43,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:14:43,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:14:43,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:14:43,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:14:43,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:14:43,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:14:43,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:14:43,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:14:43,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:14:43,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:14:43,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:14:43,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:14:43,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:14:43,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:14:43,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:14:43,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:14:43,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:14:43,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:14:43,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:14:43,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:14:43,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:14:43,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:14:43,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:14:43,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:14:43,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:14:43,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:14:43,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:14:43,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:14:43,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:14:43,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:14:43,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:14:43,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:14:43,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:14:43,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:14:43,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:14:43,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:14:43,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:14:43,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:14:43,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:14:43,504 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:14:43,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:14:43,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:14:43,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:14:43,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:14:43,507 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:14:43,507 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:14:43,507 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:14:43,507 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:14:43,507 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:14:43,508 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:14:43,509 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:14:43,509 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:14:43,509 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:14:43,509 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:14:43,510 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:14:43,510 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:14:43,510 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:14:43,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:14:43,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:14:43,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:14:43,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:14:43,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:14:43,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:14:43,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:14:43,512 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:14:43,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:14:43,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:14:43,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:14:43,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:43,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:14:43,514 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:14:43,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:14:43,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:14:43,514 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:14:43,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:14:43,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:14:43,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:14:43,516 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_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f706846995a459967b03ffd82a5fc7d6a479aa02be4ed6119cde7c985ad25459 [2022-11-03 02:14:43,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:14:43,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:14:43,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:14:43,820 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:14:43,821 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:14:43,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.7.prop1-func-interl.c [2022-11-03 02:14:43,892 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/data/88bd360ce/58cf21fc17e2464b8357130af0913347/FLAG77d750dbd [2022-11-03 02:14:44,546 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:14:44,547 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.7.prop1-func-interl.c [2022-11-03 02:14:44,574 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/data/88bd360ce/58cf21fc17e2464b8357130af0913347/FLAG77d750dbd [2022-11-03 02:14:44,708 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/data/88bd360ce/58cf21fc17e2464b8357130af0913347 [2022-11-03 02:14:44,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:14:44,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:14:44,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:44,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:14:44,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:14:44,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:44" (1/1) ... [2022-11-03 02:14:44,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e455f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:44, skipping insertion in model container [2022-11-03 02:14:44,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:44" (1/1) ... [2022-11-03 02:14:44,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:14:44,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:14:45,132 WARN L230 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_0e77212c-50b7-4d1b-b814-13979136a0e0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.7.prop1-func-interl.c[1014,1027] [2022-11-03 02:14:45,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:45,689 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:14:45,700 WARN L230 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_0e77212c-50b7-4d1b-b814-13979136a0e0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.7.prop1-func-interl.c[1014,1027] [2022-11-03 02:14:45,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:45,931 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:14:45,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:45 WrapperNode [2022-11-03 02:14:45,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:45,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:45,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:14:45,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:14:45,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:45" (1/1) ... [2022-11-03 02:14:46,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:45" (1/1) ... [2022-11-03 02:14:46,598 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4070 [2022-11-03 02:14:46,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:46,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:14:46,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:14:46,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:14:46,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:45" (1/1) ... [2022-11-03 02:14:46,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:45" (1/1) ... [2022-11-03 02:14:46,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:45" (1/1) ... [2022-11-03 02:14:46,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:45" (1/1) ... [2022-11-03 02:14:46,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:45" (1/1) ... [2022-11-03 02:14:47,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:45" (1/1) ... [2022-11-03 02:14:47,041 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:45" (1/1) ... [2022-11-03 02:14:47,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:45" (1/1) ... [2022-11-03 02:14:47,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:14:47,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:14:47,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:14:47,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:14:47,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:45" (1/1) ... [2022-11-03 02:14:47,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:47,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:47,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:14:47,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:14:47,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:14:47,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:14:48,174 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:14:48,176 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:23:17,266 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:25:25,193 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:25:25,193 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:25:25,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:25 BoogieIcfgContainer [2022-11-03 02:25:25,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:25:25,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:25:25,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:25:25,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:25:25,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:14:44" (1/3) ... [2022-11-03 02:25:25,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2bcfaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:25, skipping insertion in model container [2022-11-03 02:25:25,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:45" (2/3) ... [2022-11-03 02:25:25,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2bcfaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:25, skipping insertion in model container [2022-11-03 02:25:25,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:25" (3/3) ... [2022-11-03 02:25:25,210 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lamport.7.prop1-func-interl.c [2022-11-03 02:25:25,230 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:25:25,230 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:25:25,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:25:25,293 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;@514e8d1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:25:25,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:25:25,298 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) [2022-11-03 02:25:25,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:25:25,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:25,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:25:25,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:25,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:25,311 INFO L85 PathProgramCache]: Analyzing trace with hash 17008355, now seen corresponding path program 1 times [2022-11-03 02:25:25,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:25,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230966989] [2022-11-03 02:25:25,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:25,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:25:26,182 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:25:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:25:26,742 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:25:26,744 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:25:26,746 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:25:26,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:25:26,753 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 02:25:26,757 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:25:26,820 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:25:26,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:25:26 BoogieIcfgContainer [2022-11-03 02:25:26,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:25:26,853 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:25:26,853 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:25:26,853 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:25:26,855 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:25" (3/4) ... [2022-11-03 02:25:26,858 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:25:26,859 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:25:26,860 INFO L158 Benchmark]: Toolchain (without parser) took 642145.07ms. Allocated memory was 90.2MB in the beginning and 6.7GB in the end (delta: 6.6GB). Free memory was 49.6MB in the beginning and 4.7GB in the end (delta: -4.6GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2022-11-03 02:25:26,861 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:25:26,862 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1214.60ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 49.4MB in the beginning and 50.7MB in the end (delta: -1.3MB). Peak memory consumption was 48.4MB. Max. memory is 16.1GB. [2022-11-03 02:25:26,863 INFO L158 Benchmark]: Boogie Procedure Inliner took 665.98ms. Allocated memory was 119.5MB in the beginning and 232.8MB in the end (delta: 113.2MB). Free memory was 50.7MB in the beginning and 106.4MB in the end (delta: -55.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-11-03 02:25:26,868 INFO L158 Benchmark]: Boogie Preprocessor took 591.24ms. Allocated memory is still 232.8MB. Free memory was 106.4MB in the beginning and 109.0MB in the end (delta: -2.6MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. [2022-11-03 02:25:26,870 INFO L158 Benchmark]: RCFGBuilder took 638003.74ms. Allocated memory was 232.8MB in the beginning and 6.7GB in the end (delta: 6.5GB). Free memory was 109.0MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 4.2GB. Max. memory is 16.1GB. [2022-11-03 02:25:26,871 INFO L158 Benchmark]: TraceAbstraction took 1653.04ms. Allocated memory is still 6.7GB. Free memory was 4.8GB in the beginning and 4.7GB in the end (delta: 164.6MB). Peak memory consumption was 163.6MB. Max. memory is 16.1GB. [2022-11-03 02:25:26,872 INFO L158 Benchmark]: Witness Printer took 5.89ms. Allocated memory is still 6.7GB. Free memory is still 4.7GB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:25:26,877 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1214.60ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 49.4MB in the beginning and 50.7MB in the end (delta: -1.3MB). Peak memory consumption was 48.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 665.98ms. Allocated memory was 119.5MB in the beginning and 232.8MB in the end (delta: 113.2MB). Free memory was 50.7MB in the beginning and 106.4MB in the end (delta: -55.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 591.24ms. Allocated memory is still 232.8MB. Free memory was 106.4MB in the beginning and 109.0MB in the end (delta: -2.6MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. * RCFGBuilder took 638003.74ms. Allocated memory was 232.8MB in the beginning and 6.7GB in the end (delta: 6.5GB). Free memory was 109.0MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 4.2GB. Max. memory is 16.1GB. * TraceAbstraction took 1653.04ms. Allocated memory is still 6.7GB. Free memory was 4.8GB in the beginning and 4.7GB in the end (delta: 164.6MB). Peak memory consumption was 163.6MB. Max. memory is 16.1GB. * Witness Printer took 5.89ms. Allocated memory is still 6.7GB. Free memory is still 4.7GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 462, overapproximation of bitwiseAnd at line 315. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_30 = 0; [L39] const SORT_4 var_133 = 1; [L40] const SORT_4 var_134 = 0; [L41] const SORT_2 var_148 = 0; [L42] const SORT_2 var_152 = 1; [L43] const SORT_2 var_194 = 255; [L44] const SORT_2 var_196 = 4; [L45] const SORT_2 var_198 = 3; [L46] const SORT_2 var_200 = 2; [L47] const SORT_3 var_235 = 0; [L48] const SORT_4 var_502 = 5; [L49] const SORT_2 var_517 = 5; [L51] SORT_1 input_147; [L52] SORT_1 input_149; [L53] SORT_1 input_150; [L54] SORT_1 input_151; [L55] SORT_1 input_158; [L56] SORT_1 input_159; [L57] SORT_1 input_160; [L58] SORT_1 input_161; [L59] SORT_1 input_167; [L60] SORT_1 input_168; [L61] SORT_1 input_169; [L62] SORT_1 input_170; [L63] SORT_1 input_176; [L64] SORT_1 input_177; [L65] SORT_1 input_178; [L66] SORT_1 input_179; [L67] SORT_1 input_185; [L68] SORT_1 input_186; [L69] SORT_1 input_187; [L70] SORT_1 input_188; [L71] SORT_1 input_195; [L72] SORT_1 input_197; [L73] SORT_1 input_199; [L74] SORT_1 input_201; [L75] SORT_1 input_202; [L76] SORT_1 input_211; [L77] SORT_1 input_212; [L78] SORT_1 input_213; [L79] SORT_1 input_214; [L80] SORT_1 input_215; [L81] SORT_1 input_216; [L82] SORT_1 input_217; [L83] SORT_1 input_218; [L84] SORT_1 input_219; [L85] SORT_1 input_220; [L86] SORT_1 input_234; [L87] SORT_1 input_242; [L88] SORT_1 input_249; [L89] SORT_1 input_256; [L90] SORT_1 input_263; [L91] SORT_1 input_271; [L92] SORT_1 input_273; [L93] SORT_1 input_277; [L94] SORT_1 input_279; [L95] SORT_1 input_288; [L96] SORT_1 input_302; [L97] SORT_1 input_313; [L98] SORT_1 input_315; [L99] SORT_1 input_319; [L100] SORT_1 input_321; [L101] SORT_1 input_330; [L102] SORT_1 input_344; [L103] SORT_1 input_355; [L104] SORT_1 input_357; [L105] SORT_1 input_361; [L106] SORT_1 input_363; [L107] SORT_1 input_372; [L108] SORT_1 input_386; [L109] SORT_1 input_397; [L110] SORT_1 input_399; [L111] SORT_1 input_403; [L112] SORT_1 input_405; [L113] SORT_1 input_414; [L114] SORT_1 input_428; [L115] SORT_1 input_439; [L116] SORT_1 input_441; [L117] SORT_1 input_445; [L118] SORT_1 input_447; [L119] SORT_1 input_456; [L120] SORT_1 input_470; [L122] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L123] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L124] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L125] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L126] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L127] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L128] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L129] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L130] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L131] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L132] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L133] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L134] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L135] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L136] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L137] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L138] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L139] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L140] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L141] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L142] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L143] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L144] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L145] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L146] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L147] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L148] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L149] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L150] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L151] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L152] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L153] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L154] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L155] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L156] SORT_1 state_75 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L157] SORT_1 state_77 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L158] SORT_1 state_79 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L159] SORT_1 state_81 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L160] SORT_1 state_83 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L161] SORT_1 state_85 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L162] SORT_1 state_87 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L163] SORT_1 state_89 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L164] SORT_1 state_91 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L165] SORT_1 state_93 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L166] SORT_1 state_95 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L167] SORT_1 state_97 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L168] SORT_1 state_99 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L169] SORT_1 state_101 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L170] SORT_1 state_103 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L171] SORT_1 state_105 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L172] SORT_1 state_107 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L173] SORT_1 state_109 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L174] SORT_1 state_111 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L175] SORT_1 state_113 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L176] SORT_1 state_115 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L177] SORT_1 state_117 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L178] SORT_1 state_119 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L179] SORT_1 state_121 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L180] SORT_1 state_123 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L181] SORT_1 state_125 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L182] SORT_1 state_127 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L183] SORT_1 state_129 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L184] SORT_1 state_131 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L186] SORT_2 init_7_arg_1 = var_5; [L187] state_6 = init_7_arg_1 [L188] SORT_2 init_9_arg_1 = var_5; [L189] state_8 = init_9_arg_1 [L190] SORT_2 init_11_arg_1 = var_5; [L191] state_10 = init_11_arg_1 [L192] SORT_2 init_13_arg_1 = var_5; [L193] state_12 = init_13_arg_1 [L194] SORT_2 init_15_arg_1 = var_5; [L195] state_14 = init_15_arg_1 [L196] SORT_2 init_17_arg_1 = var_5; [L197] state_16 = init_17_arg_1 [L198] SORT_2 init_19_arg_1 = var_5; [L199] state_18 = init_19_arg_1 [L200] SORT_2 init_21_arg_1 = var_5; [L201] state_20 = init_21_arg_1 [L202] SORT_2 init_23_arg_1 = var_5; [L203] state_22 = init_23_arg_1 [L204] SORT_2 init_25_arg_1 = var_5; [L205] state_24 = init_25_arg_1 [L206] SORT_2 init_27_arg_1 = var_5; [L207] state_26 = init_27_arg_1 [L208] SORT_2 init_29_arg_1 = var_5; [L209] state_28 = init_29_arg_1 [L210] SORT_1 init_32_arg_1 = var_30; [L211] state_31 = init_32_arg_1 [L212] SORT_1 init_34_arg_1 = var_30; [L213] state_33 = init_34_arg_1 [L214] SORT_1 init_36_arg_1 = var_30; [L215] state_35 = init_36_arg_1 [L216] SORT_1 init_38_arg_1 = var_30; [L217] state_37 = init_38_arg_1 [L218] SORT_1 init_40_arg_1 = var_30; [L219] state_39 = init_40_arg_1 [L220] SORT_1 init_42_arg_1 = var_30; [L221] state_41 = init_42_arg_1 [L222] SORT_1 init_44_arg_1 = var_30; [L223] state_43 = init_44_arg_1 [L224] SORT_1 init_46_arg_1 = var_30; [L225] state_45 = init_46_arg_1 [L226] SORT_1 init_48_arg_1 = var_30; [L227] state_47 = init_48_arg_1 [L228] SORT_1 init_50_arg_1 = var_30; [L229] state_49 = init_50_arg_1 [L230] SORT_1 init_52_arg_1 = var_30; [L231] state_51 = init_52_arg_1 [L232] SORT_1 init_54_arg_1 = var_30; [L233] state_53 = init_54_arg_1 [L234] SORT_1 init_56_arg_1 = var_30; [L235] state_55 = init_56_arg_1 [L236] SORT_1 init_58_arg_1 = var_30; [L237] state_57 = init_58_arg_1 [L238] SORT_1 init_60_arg_1 = var_30; [L239] state_59 = init_60_arg_1 [L240] SORT_1 init_62_arg_1 = var_30; [L241] state_61 = init_62_arg_1 [L242] SORT_1 init_64_arg_1 = var_30; [L243] state_63 = init_64_arg_1 [L244] SORT_1 init_66_arg_1 = var_30; [L245] state_65 = init_66_arg_1 [L246] SORT_1 init_68_arg_1 = var_30; [L247] state_67 = init_68_arg_1 [L248] SORT_1 init_70_arg_1 = var_30; [L249] state_69 = init_70_arg_1 [L250] SORT_1 init_72_arg_1 = var_30; [L251] state_71 = init_72_arg_1 [L252] SORT_1 init_74_arg_1 = var_30; [L253] state_73 = init_74_arg_1 [L254] SORT_1 init_76_arg_1 = var_30; [L255] state_75 = init_76_arg_1 [L256] SORT_1 init_78_arg_1 = var_30; [L257] state_77 = init_78_arg_1 [L258] SORT_1 init_80_arg_1 = var_30; [L259] state_79 = init_80_arg_1 [L260] SORT_1 init_82_arg_1 = var_30; [L261] state_81 = init_82_arg_1 [L262] SORT_1 init_84_arg_1 = var_30; [L263] state_83 = init_84_arg_1 [L264] SORT_1 init_86_arg_1 = var_30; [L265] state_85 = init_86_arg_1 [L266] SORT_1 init_88_arg_1 = var_30; [L267] state_87 = init_88_arg_1 [L268] SORT_1 init_90_arg_1 = var_30; [L269] state_89 = init_90_arg_1 [L270] SORT_1 init_92_arg_1 = var_30; [L271] state_91 = init_92_arg_1 [L272] SORT_1 init_94_arg_1 = var_30; [L273] state_93 = init_94_arg_1 [L274] SORT_1 init_96_arg_1 = var_30; [L275] state_95 = init_96_arg_1 [L276] SORT_1 init_98_arg_1 = var_30; [L277] state_97 = init_98_arg_1 [L278] SORT_1 init_100_arg_1 = var_30; [L279] state_99 = init_100_arg_1 [L280] SORT_1 init_102_arg_1 = var_30; [L281] state_101 = init_102_arg_1 [L282] SORT_1 init_104_arg_1 = var_30; [L283] state_103 = init_104_arg_1 [L284] SORT_1 init_106_arg_1 = var_30; [L285] state_105 = init_106_arg_1 [L286] SORT_1 init_108_arg_1 = var_30; [L287] state_107 = init_108_arg_1 [L288] SORT_1 init_110_arg_1 = var_30; [L289] state_109 = init_110_arg_1 [L290] SORT_1 init_112_arg_1 = var_30; [L291] state_111 = init_112_arg_1 [L292] SORT_1 init_114_arg_1 = var_30; [L293] state_113 = init_114_arg_1 [L294] SORT_1 init_116_arg_1 = var_30; [L295] state_115 = init_116_arg_1 [L296] SORT_1 init_118_arg_1 = var_30; [L297] state_117 = init_118_arg_1 [L298] SORT_1 init_120_arg_1 = var_30; [L299] state_119 = init_120_arg_1 [L300] SORT_1 init_122_arg_1 = var_30; [L301] state_121 = init_122_arg_1 [L302] SORT_1 init_124_arg_1 = var_30; [L303] state_123 = init_124_arg_1 [L304] SORT_1 init_126_arg_1 = var_30; [L305] state_125 = init_126_arg_1 [L306] SORT_1 init_128_arg_1 = var_30; [L307] state_127 = init_128_arg_1 [L308] SORT_1 init_130_arg_1 = var_30; [L309] state_129 = init_130_arg_1 [L310] SORT_1 init_132_arg_1 = var_30; [L311] state_131 = init_132_arg_1 VAL [init_100_arg_1=0, init_102_arg_1=0, init_104_arg_1=0, init_106_arg_1=0, init_108_arg_1=0, init_110_arg_1=0, init_112_arg_1=0, init_114_arg_1=0, init_116_arg_1=0, init_118_arg_1=0, init_11_arg_1=0, init_120_arg_1=0, init_122_arg_1=0, init_124_arg_1=0, init_126_arg_1=0, init_128_arg_1=0, init_130_arg_1=0, init_132_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_86_arg_1=0, init_88_arg_1=0, init_90_arg_1=0, init_92_arg_1=0, init_94_arg_1=0, init_96_arg_1=0, init_98_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_101=0, state_103=0, state_105=0, state_107=0, state_109=0, state_111=0, state_113=0, state_115=0, state_117=0, state_119=0, state_12=0, state_121=0, state_123=0, state_125=0, state_127=0, state_129=0, state_131=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, state_85=0, state_87=0, state_89=0, state_91=0, state_93=0, state_95=0, state_97=0, state_99=0, var_133=1, var_134=0, var_148=0, var_152=1, var_194=255, var_196=4, var_198=3, var_200=2, var_235=0, var_30=0, var_5=0, var_502=5, var_517=5] [L314] input_147 = __VERIFIER_nondet_uchar() [L315] input_147 = input_147 & mask_SORT_1 [L316] input_149 = __VERIFIER_nondet_uchar() [L317] input_149 = input_149 & mask_SORT_1 [L318] input_150 = __VERIFIER_nondet_uchar() [L319] input_150 = input_150 & mask_SORT_1 [L320] input_151 = __VERIFIER_nondet_uchar() [L321] input_151 = input_151 & mask_SORT_1 [L322] input_158 = __VERIFIER_nondet_uchar() [L323] input_158 = input_158 & mask_SORT_1 [L324] input_159 = __VERIFIER_nondet_uchar() [L325] input_159 = input_159 & mask_SORT_1 [L326] input_160 = __VERIFIER_nondet_uchar() [L327] input_160 = input_160 & mask_SORT_1 [L328] input_161 = __VERIFIER_nondet_uchar() [L329] input_161 = input_161 & mask_SORT_1 [L330] input_167 = __VERIFIER_nondet_uchar() [L331] input_167 = input_167 & mask_SORT_1 [L332] input_168 = __VERIFIER_nondet_uchar() [L333] input_168 = input_168 & mask_SORT_1 [L334] input_169 = __VERIFIER_nondet_uchar() [L335] input_169 = input_169 & mask_SORT_1 [L336] input_170 = __VERIFIER_nondet_uchar() [L337] input_170 = input_170 & mask_SORT_1 [L338] input_176 = __VERIFIER_nondet_uchar() [L339] input_176 = input_176 & mask_SORT_1 [L340] input_177 = __VERIFIER_nondet_uchar() [L341] input_177 = input_177 & mask_SORT_1 [L342] input_178 = __VERIFIER_nondet_uchar() [L343] input_178 = input_178 & mask_SORT_1 [L344] input_179 = __VERIFIER_nondet_uchar() [L345] input_179 = input_179 & mask_SORT_1 [L346] input_185 = __VERIFIER_nondet_uchar() [L347] input_185 = input_185 & mask_SORT_1 [L348] input_186 = __VERIFIER_nondet_uchar() [L349] input_186 = input_186 & mask_SORT_1 [L350] input_187 = __VERIFIER_nondet_uchar() [L351] input_187 = input_187 & mask_SORT_1 [L352] input_188 = __VERIFIER_nondet_uchar() [L353] input_188 = input_188 & mask_SORT_1 [L354] input_195 = __VERIFIER_nondet_uchar() [L355] input_195 = input_195 & mask_SORT_1 [L356] input_197 = __VERIFIER_nondet_uchar() [L357] input_197 = input_197 & mask_SORT_1 [L358] input_199 = __VERIFIER_nondet_uchar() [L359] input_199 = input_199 & mask_SORT_1 [L360] input_201 = __VERIFIER_nondet_uchar() [L361] input_201 = input_201 & mask_SORT_1 [L362] input_202 = __VERIFIER_nondet_uchar() [L363] input_202 = input_202 & mask_SORT_1 [L364] input_211 = __VERIFIER_nondet_uchar() [L365] input_211 = input_211 & mask_SORT_1 [L366] input_212 = __VERIFIER_nondet_uchar() [L367] input_212 = input_212 & mask_SORT_1 [L368] input_213 = __VERIFIER_nondet_uchar() [L369] input_213 = input_213 & mask_SORT_1 [L370] input_214 = __VERIFIER_nondet_uchar() [L371] input_214 = input_214 & mask_SORT_1 [L372] input_215 = __VERIFIER_nondet_uchar() [L373] input_215 = input_215 & mask_SORT_1 [L374] input_216 = __VERIFIER_nondet_uchar() [L375] input_216 = input_216 & mask_SORT_1 [L376] input_217 = __VERIFIER_nondet_uchar() [L377] input_217 = input_217 & mask_SORT_1 [L378] input_218 = __VERIFIER_nondet_uchar() [L379] input_218 = input_218 & mask_SORT_1 [L380] input_219 = __VERIFIER_nondet_uchar() [L381] input_219 = input_219 & mask_SORT_1 [L382] input_220 = __VERIFIER_nondet_uchar() [L383] input_220 = input_220 & mask_SORT_1 [L384] input_234 = __VERIFIER_nondet_uchar() [L385] input_234 = input_234 & mask_SORT_1 [L386] input_242 = __VERIFIER_nondet_uchar() [L387] input_242 = input_242 & mask_SORT_1 [L388] input_249 = __VERIFIER_nondet_uchar() [L389] input_249 = input_249 & mask_SORT_1 [L390] input_256 = __VERIFIER_nondet_uchar() [L391] input_256 = input_256 & mask_SORT_1 [L392] input_263 = __VERIFIER_nondet_uchar() [L393] input_263 = input_263 & mask_SORT_1 [L394] input_271 = __VERIFIER_nondet_uchar() [L395] input_273 = __VERIFIER_nondet_uchar() [L396] input_277 = __VERIFIER_nondet_uchar() [L397] input_279 = __VERIFIER_nondet_uchar() [L398] input_288 = __VERIFIER_nondet_uchar() [L399] input_302 = __VERIFIER_nondet_uchar() [L400] input_313 = __VERIFIER_nondet_uchar() [L401] input_315 = __VERIFIER_nondet_uchar() [L402] input_319 = __VERIFIER_nondet_uchar() [L403] input_321 = __VERIFIER_nondet_uchar() [L404] input_330 = __VERIFIER_nondet_uchar() [L405] input_344 = __VERIFIER_nondet_uchar() [L406] input_355 = __VERIFIER_nondet_uchar() [L407] input_357 = __VERIFIER_nondet_uchar() [L408] input_361 = __VERIFIER_nondet_uchar() [L409] input_363 = __VERIFIER_nondet_uchar() [L410] input_372 = __VERIFIER_nondet_uchar() [L411] input_386 = __VERIFIER_nondet_uchar() [L412] input_397 = __VERIFIER_nondet_uchar() [L413] input_399 = __VERIFIER_nondet_uchar() [L414] input_403 = __VERIFIER_nondet_uchar() [L415] input_405 = __VERIFIER_nondet_uchar() [L416] input_414 = __VERIFIER_nondet_uchar() [L417] input_428 = __VERIFIER_nondet_uchar() [L418] input_439 = __VERIFIER_nondet_uchar() [L419] input_441 = __VERIFIER_nondet_uchar() [L420] input_445 = __VERIFIER_nondet_uchar() [L421] input_447 = __VERIFIER_nondet_uchar() [L422] input_456 = __VERIFIER_nondet_uchar() [L423] input_470 = __VERIFIER_nondet_uchar() [L426] SORT_1 var_135_arg_0 = state_33; [L427] SORT_4 var_135_arg_1 = var_133; [L428] SORT_4 var_135_arg_2 = var_134; [L429] EXPR var_135_arg_0 ? var_135_arg_1 : var_135_arg_2 [L429] SORT_4 var_135 = var_135_arg_0 ? var_135_arg_1 : var_135_arg_2; [L430] SORT_1 var_136_arg_0 = state_53; [L431] SORT_4 var_136_arg_1 = var_133; [L432] SORT_4 var_136_arg_2 = var_134; [L433] EXPR var_136_arg_0 ? var_136_arg_1 : var_136_arg_2 [L433] SORT_4 var_136 = var_136_arg_0 ? var_136_arg_1 : var_136_arg_2; [L434] SORT_4 var_137_arg_0 = var_135; [L435] SORT_4 var_137_arg_1 = var_136; [L436] SORT_4 var_137 = var_137_arg_0 + var_137_arg_1; [L437] SORT_1 var_138_arg_0 = state_73; [L438] SORT_4 var_138_arg_1 = var_133; [L439] SORT_4 var_138_arg_2 = var_134; [L440] EXPR var_138_arg_0 ? var_138_arg_1 : var_138_arg_2 [L440] SORT_4 var_138 = var_138_arg_0 ? var_138_arg_1 : var_138_arg_2; [L441] SORT_4 var_139_arg_0 = var_137; [L442] SORT_4 var_139_arg_1 = var_138; [L443] SORT_4 var_139 = var_139_arg_0 + var_139_arg_1; [L444] SORT_1 var_140_arg_0 = state_93; [L445] SORT_4 var_140_arg_1 = var_133; [L446] SORT_4 var_140_arg_2 = var_134; [L447] EXPR var_140_arg_0 ? var_140_arg_1 : var_140_arg_2 [L447] SORT_4 var_140 = var_140_arg_0 ? var_140_arg_1 : var_140_arg_2; [L448] SORT_4 var_141_arg_0 = var_139; [L449] SORT_4 var_141_arg_1 = var_140; [L450] SORT_4 var_141 = var_141_arg_0 + var_141_arg_1; [L451] SORT_1 var_142_arg_0 = state_113; [L452] SORT_4 var_142_arg_1 = var_133; [L453] SORT_4 var_142_arg_2 = var_134; [L454] EXPR var_142_arg_0 ? var_142_arg_1 : var_142_arg_2 [L454] SORT_4 var_142 = var_142_arg_0 ? var_142_arg_1 : var_142_arg_2; [L455] SORT_4 var_143_arg_0 = var_141; [L456] SORT_4 var_143_arg_1 = var_142; [L457] SORT_4 var_143 = var_143_arg_0 + var_143_arg_1; [L458] var_143 = var_143 & mask_SORT_4 [L459] SORT_4 var_144_arg_0 = var_143; [L460] SORT_4 var_144_arg_1 = var_133; [L461] SORT_1 var_144 = var_144_arg_0 <= var_144_arg_1; [L462] SORT_1 var_145_arg_0 = ~state_131; [L463] var_145_arg_0 = var_145_arg_0 & mask_SORT_1 [L464] SORT_1 var_145_arg_1 = ~var_144; [L465] var_145_arg_1 = var_145_arg_1 & mask_SORT_1 [L466] SORT_1 var_145 = var_145_arg_0 & var_145_arg_1; [L467] var_145 = var_145 & mask_SORT_1 [L468] SORT_1 bad_146_arg_0 = var_145; [L469] CALL __VERIFIER_assert(!(bad_146_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s 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 [2022-11-03 02:25:26,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.7.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI --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 f706846995a459967b03ffd82a5fc7d6a479aa02be4ed6119cde7c985ad25459 --- 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-5e519f3 [2022-11-03 02:25:29,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:25:29,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:25:29,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:25:29,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:25:29,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:25:29,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:25:29,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:25:29,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:25:29,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:25:29,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:25:29,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:25:29,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:25:29,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:25:29,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:25:29,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:25:29,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:25:29,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:25:29,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:25:29,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:25:29,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:25:29,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:25:29,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:25:29,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:25:29,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:25:29,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:25:29,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:25:29,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:25:29,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:25:29,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:25:29,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:25:29,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:25:29,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:25:29,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:25:29,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:25:29,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:25:29,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:25:29,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:25:29,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:25:29,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:25:29,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:25:29,644 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:25:29,668 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:25:29,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:25:29,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:25:29,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:25:29,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:25:29,670 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:25:29,670 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:25:29,671 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:25:29,671 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:25:29,671 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:25:29,672 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:25:29,672 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:25:29,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:25:29,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:25:29,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:25:29,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:25:29,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:25:29,675 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:25:29,675 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:25:29,675 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:25:29,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:25:29,676 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:25:29,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:25:29,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:25:29,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:25:29,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:25:29,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:25:29,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:25:29,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:25:29,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:25:29,679 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:25:29,679 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:29,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:25:29,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:25:29,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:25:29,681 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_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f706846995a459967b03ffd82a5fc7d6a479aa02be4ed6119cde7c985ad25459 [2022-11-03 02:25:30,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:25:30,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:25:30,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:25:30,154 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:25:30,157 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:25:30,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.7.prop1-func-interl.c [2022-11-03 02:25:30,237 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/data/badabb0a0/8bc9138cc9284e188c83ea139d66733f/FLAGfe5b72750 [2022-11-03 02:25:30,992 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:25:30,994 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.7.prop1-func-interl.c [2022-11-03 02:25:31,024 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/data/badabb0a0/8bc9138cc9284e188c83ea139d66733f/FLAGfe5b72750 [2022-11-03 02:25:31,121 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/data/badabb0a0/8bc9138cc9284e188c83ea139d66733f [2022-11-03 02:25:31,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:25:31,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:25:31,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:25:31,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:25:31,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:25:31,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:25:31" (1/1) ... [2022-11-03 02:25:31,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@650e4684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:31, skipping insertion in model container [2022-11-03 02:25:31,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:25:31" (1/1) ... [2022-11-03 02:25:31,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:25:31,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:25:31,489 WARN L230 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_0e77212c-50b7-4d1b-b814-13979136a0e0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.7.prop1-func-interl.c[1014,1027] [2022-11-03 02:25:32,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:25:32,036 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:25:32,047 WARN L230 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_0e77212c-50b7-4d1b-b814-13979136a0e0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.7.prop1-func-interl.c[1014,1027] [2022-11-03 02:25:32,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:25:32,407 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:25:32,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32 WrapperNode [2022-11-03 02:25:32,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:25:32,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:25:32,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:25:32,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:25:32,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,688 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4070 [2022-11-03 02:25:32,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:25:32,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:25:32,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:25:32,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:25:32,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,849 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:25:32,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:25:32,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:25:32,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:25:32,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:25:32,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:32,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:25:32,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:25:32,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:25:32,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:25:33,945 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:25:33,949 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:25:37,438 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:25:37,448 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:25:37,449 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:25:37,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:37 BoogieIcfgContainer [2022-11-03 02:25:37,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:25:37,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:25:37,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:25:37,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:25:37,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:25:31" (1/3) ... [2022-11-03 02:25:37,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6419092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:37, skipping insertion in model container [2022-11-03 02:25:37,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (2/3) ... [2022-11-03 02:25:37,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6419092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:37, skipping insertion in model container [2022-11-03 02:25:37,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:37" (3/3) ... [2022-11-03 02:25:37,460 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lamport.7.prop1-func-interl.c [2022-11-03 02:25:37,479 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:25:37,479 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:25:37,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:25:37,565 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;@7c6c2895, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:25:37,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:25:37,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 149 states have (on average 1.4966442953020134) internal successors, (223), 150 states have internal predecessors, (223), 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) [2022-11-03 02:25:37,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:25:37,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:37,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:37,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:37,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:37,587 INFO L85 PathProgramCache]: Analyzing trace with hash -761744867, now seen corresponding path program 1 times [2022-11-03 02:25:37,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:37,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520900509] [2022-11-03 02:25:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:37,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:37,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:37,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:37,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:25:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:38,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:25:38,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:38,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:38,573 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:38,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520900509] [2022-11-03 02:25:38,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520900509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:38,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:38,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:38,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578357055] [2022-11-03 02:25:38,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:38,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:38,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:38,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:38,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:38,609 INFO L87 Difference]: Start difference. First operand has 151 states, 149 states have (on average 1.4966442953020134) internal successors, (223), 150 states have internal predecessors, (223), 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 3.75) internal successors, (15), 4 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) [2022-11-03 02:25:39,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:39,108 INFO L93 Difference]: Finished difference Result 585 states and 875 transitions. [2022-11-03 02:25:39,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:25:39,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) Word has length 15 [2022-11-03 02:25:39,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:39,124 INFO L225 Difference]: With dead ends: 585 [2022-11-03 02:25:39,124 INFO L226 Difference]: Without dead ends: 436 [2022-11-03 02:25:39,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:39,130 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 637 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:39,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 847 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:25:39,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-11-03 02:25:39,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 149. [2022-11-03 02:25:39,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.4797297297297298) internal successors, (219), 148 states have internal predecessors, (219), 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) [2022-11-03 02:25:39,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 219 transitions. [2022-11-03 02:25:39,176 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 219 transitions. Word has length 15 [2022-11-03 02:25:39,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:39,177 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 219 transitions. [2022-11-03 02:25:39,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2022-11-03 02:25:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 219 transitions. [2022-11-03 02:25:39,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:25:39,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:39,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:39,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 02:25:39,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:39,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:39,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:39,393 INFO L85 PathProgramCache]: Analyzing trace with hash -503579429, now seen corresponding path program 1 times [2022-11-03 02:25:39,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:39,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398475627] [2022-11-03 02:25:39,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:39,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:39,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:39,396 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:39,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:25:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:40,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:25:40,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:40,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:40,233 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:40,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398475627] [2022-11-03 02:25:40,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398475627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:40,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:40,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:40,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987206360] [2022-11-03 02:25:40,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:40,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:40,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:40,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:40,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:40,237 INFO L87 Difference]: Start difference. First operand 149 states and 219 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2022-11-03 02:25:40,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:40,619 INFO L93 Difference]: Finished difference Result 581 states and 859 transitions. [2022-11-03 02:25:40,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:25:40,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) Word has length 15 [2022-11-03 02:25:40,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:40,624 INFO L225 Difference]: With dead ends: 581 [2022-11-03 02:25:40,624 INFO L226 Difference]: Without dead ends: 436 [2022-11-03 02:25:40,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:40,626 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 631 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:40,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 846 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:25:40,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-11-03 02:25:40,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 151. [2022-11-03 02:25:40,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.4733333333333334) internal successors, (221), 150 states have internal predecessors, (221), 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) [2022-11-03 02:25:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 221 transitions. [2022-11-03 02:25:40,654 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 221 transitions. Word has length 15 [2022-11-03 02:25:40,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:40,655 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 221 transitions. [2022-11-03 02:25:40,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2022-11-03 02:25:40,655 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 221 transitions. [2022-11-03 02:25:40,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:25:40,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:40,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:40,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:40,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:40,857 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:40,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:40,858 INFO L85 PathProgramCache]: Analyzing trace with hash -896606439, now seen corresponding path program 1 times [2022-11-03 02:25:40,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:40,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060074485] [2022-11-03 02:25:40,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:40,859 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:40,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:40,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:40,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:25:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:41,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:25:41,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:41,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:41,653 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:41,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060074485] [2022-11-03 02:25:41,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060074485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:41,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:41,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:41,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505943908] [2022-11-03 02:25:41,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:41,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:41,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:41,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:41,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:41,662 INFO L87 Difference]: Start difference. First operand 151 states and 221 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2022-11-03 02:25:42,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:42,082 INFO L93 Difference]: Finished difference Result 581 states and 858 transitions. [2022-11-03 02:25:42,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:25:42,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) Word has length 15 [2022-11-03 02:25:42,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:42,086 INFO L225 Difference]: With dead ends: 581 [2022-11-03 02:25:42,086 INFO L226 Difference]: Without dead ends: 436 [2022-11-03 02:25:42,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:42,088 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 625 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:42,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 845 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:25:42,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-11-03 02:25:42,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 153. [2022-11-03 02:25:42,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.4671052631578947) internal successors, (223), 152 states have internal predecessors, (223), 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) [2022-11-03 02:25:42,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 223 transitions. [2022-11-03 02:25:42,100 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 223 transitions. Word has length 15 [2022-11-03 02:25:42,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:42,101 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 223 transitions. [2022-11-03 02:25:42,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2022-11-03 02:25:42,101 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 223 transitions. [2022-11-03 02:25:42,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:25:42,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:42,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:42,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:42,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:42,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:42,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:42,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1705953065, now seen corresponding path program 1 times [2022-11-03 02:25:42,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:42,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780172009] [2022-11-03 02:25:42,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:42,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:42,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:42,319 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:42,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:25:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:43,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:25:43,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:43,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:43,118 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:43,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780172009] [2022-11-03 02:25:43,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780172009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:43,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:43,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:43,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44250147] [2022-11-03 02:25:43,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:43,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:43,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:43,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:43,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:43,121 INFO L87 Difference]: Start difference. First operand 153 states and 223 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2022-11-03 02:25:43,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:43,505 INFO L93 Difference]: Finished difference Result 581 states and 857 transitions. [2022-11-03 02:25:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:25:43,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) Word has length 15 [2022-11-03 02:25:43,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:43,509 INFO L225 Difference]: With dead ends: 581 [2022-11-03 02:25:43,509 INFO L226 Difference]: Without dead ends: 436 [2022-11-03 02:25:43,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:43,511 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 619 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:43,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 844 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:25:43,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-11-03 02:25:43,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 155. [2022-11-03 02:25:43,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.4610389610389611) internal successors, (225), 154 states have internal predecessors, (225), 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) [2022-11-03 02:25:43,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 225 transitions. [2022-11-03 02:25:43,521 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 225 transitions. Word has length 15 [2022-11-03 02:25:43,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:43,522 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 225 transitions. [2022-11-03 02:25:43,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2022-11-03 02:25:43,522 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 225 transitions. [2022-11-03 02:25:43,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:25:43,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:43,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:43,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:43,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:43,735 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:43,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:43,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1648694763, now seen corresponding path program 1 times [2022-11-03 02:25:43,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:43,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695086217] [2022-11-03 02:25:43,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:43,738 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:43,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:43,739 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:43,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:25:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:44,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:25:44,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:44,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:44,445 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:44,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695086217] [2022-11-03 02:25:44,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695086217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:44,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:44,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:44,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054286376] [2022-11-03 02:25:44,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:44,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:44,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:44,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:44,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:44,449 INFO L87 Difference]: Start difference. First operand 155 states and 225 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2022-11-03 02:25:44,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:44,728 INFO L93 Difference]: Finished difference Result 581 states and 856 transitions. [2022-11-03 02:25:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:25:44,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) Word has length 15 [2022-11-03 02:25:44,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:44,736 INFO L225 Difference]: With dead ends: 581 [2022-11-03 02:25:44,736 INFO L226 Difference]: Without dead ends: 436 [2022-11-03 02:25:44,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:44,737 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 613 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:44,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 846 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:25:44,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-11-03 02:25:44,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 157. [2022-11-03 02:25:44,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.455128205128205) internal successors, (227), 156 states have internal predecessors, (227), 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) [2022-11-03 02:25:44,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 227 transitions. [2022-11-03 02:25:44,746 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 227 transitions. Word has length 15 [2022-11-03 02:25:44,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:44,747 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 227 transitions. [2022-11-03 02:25:44,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2022-11-03 02:25:44,747 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 227 transitions. [2022-11-03 02:25:44,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:25:44,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:44,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:44,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:44,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:44,963 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:44,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:44,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1648635181, now seen corresponding path program 1 times [2022-11-03 02:25:44,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:44,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891406874] [2022-11-03 02:25:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:44,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:44,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:44,965 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:44,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:25:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:45,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:25:45,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:46,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:46,126 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:46,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891406874] [2022-11-03 02:25:46,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891406874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:46,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:46,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 02:25:46,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738365689] [2022-11-03 02:25:46,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:46,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:25:46,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:46,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:25:46,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:25:46,129 INFO L87 Difference]: Start difference. First operand 157 states and 227 transitions. Second operand has 14 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) [2022-11-03 02:25:50,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:50,746 INFO L93 Difference]: Finished difference Result 942 states and 1382 transitions. [2022-11-03 02:25:50,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-03 02:25:50,747 INFO L78 Accepts]: Start accepts. Automaton has has 14 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) Word has length 15 [2022-11-03 02:25:50,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:50,751 INFO L225 Difference]: With dead ends: 942 [2022-11-03 02:25:50,751 INFO L226 Difference]: Without dead ends: 940 [2022-11-03 02:25:50,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=763, Invalid=2659, Unknown=0, NotChecked=0, Total=3422 [2022-11-03 02:25:50,753 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 2308 mSDsluCounter, 4111 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 4338 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:50,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2308 Valid, 4338 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 02:25:50,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2022-11-03 02:25:50,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 167. [2022-11-03 02:25:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4518072289156627) internal successors, (241), 166 states have internal predecessors, (241), 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) [2022-11-03 02:25:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 241 transitions. [2022-11-03 02:25:50,766 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 241 transitions. Word has length 15 [2022-11-03 02:25:50,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:50,766 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 241 transitions. [2022-11-03 02:25:50,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 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) [2022-11-03 02:25:50,767 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 241 transitions. [2022-11-03 02:25:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:25:50,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:50,771 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:50,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:50,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:50,986 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:50,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:50,987 INFO L85 PathProgramCache]: Analyzing trace with hash 81126777, now seen corresponding path program 1 times [2022-11-03 02:25:50,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:50,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242917940] [2022-11-03 02:25:50,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:50,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:50,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:50,997 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:51,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:25:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:52,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:25:52,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:53,223 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:53,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:53,223 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:53,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242917940] [2022-11-03 02:25:53,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242917940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:53,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:53,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:25:53,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939718161] [2022-11-03 02:25:53,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:53,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:25:53,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:53,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:25:53,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:25:53,226 INFO L87 Difference]: Start difference. First operand 167 states and 241 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 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) [2022-11-03 02:25:53,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:53,546 INFO L93 Difference]: Finished difference Result 396 states and 580 transitions. [2022-11-03 02:25:53,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:25:53,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 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 158 [2022-11-03 02:25:53,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:53,549 INFO L225 Difference]: With dead ends: 396 [2022-11-03 02:25:53,550 INFO L226 Difference]: Without dead ends: 241 [2022-11-03 02:25:53,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:53,551 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 108 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:53,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1243 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 19 Unchecked, 0.3s Time] [2022-11-03 02:25:53,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-03 02:25:53,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-11-03 02:25:53,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.4583333333333333) internal successors, (350), 240 states have internal predecessors, (350), 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) [2022-11-03 02:25:53,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 350 transitions. [2022-11-03 02:25:53,561 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 350 transitions. Word has length 158 [2022-11-03 02:25:53,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:53,562 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 350 transitions. [2022-11-03 02:25:53,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 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) [2022-11-03 02:25:53,562 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 350 transitions. [2022-11-03 02:25:53,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:25:53,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:53,565 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:53,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-03 02:25:53,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:53,779 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:53,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:53,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1992169335, now seen corresponding path program 1 times [2022-11-03 02:25:53,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:53,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882983316] [2022-11-03 02:25:53,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:53,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:53,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:53,784 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:53,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:25:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:55,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:25:55,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:56,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:56,030 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:56,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882983316] [2022-11-03 02:25:56,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882983316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:56,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:56,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:56,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198864413] [2022-11-03 02:25:56,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:56,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:56,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:56,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:56,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:56,033 INFO L87 Difference]: Start difference. First operand 241 states and 350 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2022-11-03 02:25:56,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:56,466 INFO L93 Difference]: Finished difference Result 675 states and 993 transitions. [2022-11-03 02:25:56,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:25:56,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 158 [2022-11-03 02:25:56,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:56,472 INFO L225 Difference]: With dead ends: 675 [2022-11-03 02:25:56,472 INFO L226 Difference]: Without dead ends: 520 [2022-11-03 02:25:56,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:56,473 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 375 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:56,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 826 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:25:56,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-11-03 02:25:56,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 327. [2022-11-03 02:25:56,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.4662576687116564) internal successors, (478), 326 states have internal predecessors, (478), 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) [2022-11-03 02:25:56,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 478 transitions. [2022-11-03 02:25:56,484 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 478 transitions. Word has length 158 [2022-11-03 02:25:56,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:56,485 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 478 transitions. [2022-11-03 02:25:56,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2022-11-03 02:25:56,486 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 478 transitions. [2022-11-03 02:25:56,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:25:56,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:56,488 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:56,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-03 02:25:56,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:56,703 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:56,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:56,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1858897287, now seen corresponding path program 1 times [2022-11-03 02:25:56,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:56,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069704113] [2022-11-03 02:25:56,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:56,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:56,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:56,709 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:56,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:25:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:58,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:25:58,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:58,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:58,870 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:58,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069704113] [2022-11-03 02:25:58,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069704113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:58,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:58,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:58,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967480768] [2022-11-03 02:25:58,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:58,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:58,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:58,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:58,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:58,873 INFO L87 Difference]: Start difference. First operand 327 states and 478 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:25:59,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:59,345 INFO L93 Difference]: Finished difference Result 790 states and 1161 transitions. [2022-11-03 02:25:59,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:59,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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 158 [2022-11-03 02:25:59,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:59,351 INFO L225 Difference]: With dead ends: 790 [2022-11-03 02:25:59,351 INFO L226 Difference]: Without dead ends: 635 [2022-11-03 02:25:59,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:59,352 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 737 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:59,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1243 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:25:59,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-11-03 02:25:59,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 329. [2022-11-03 02:25:59,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.4634146341463414) internal successors, (480), 328 states have internal predecessors, (480), 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) [2022-11-03 02:25:59,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 480 transitions. [2022-11-03 02:25:59,364 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 480 transitions. Word has length 158 [2022-11-03 02:25:59,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:59,364 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 480 transitions. [2022-11-03 02:25:59,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:25:59,365 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 480 transitions. [2022-11-03 02:25:59,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:25:59,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:59,368 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:59,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:59,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:59,583 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:59,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:59,584 INFO L85 PathProgramCache]: Analyzing trace with hash 407483899, now seen corresponding path program 1 times [2022-11-03 02:25:59,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:59,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402634754] [2022-11-03 02:25:59,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:59,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:59,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:59,589 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:59,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:26:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:01,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:01,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:01,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:01,680 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:01,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402634754] [2022-11-03 02:26:01,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402634754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:01,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:01,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:01,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817587972] [2022-11-03 02:26:01,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:01,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:01,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:01,682 INFO L87 Difference]: Start difference. First operand 329 states and 480 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:02,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:02,171 INFO L93 Difference]: Finished difference Result 790 states and 1160 transitions. [2022-11-03 02:26:02,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:02,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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 158 [2022-11-03 02:26:02,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:02,176 INFO L225 Difference]: With dead ends: 790 [2022-11-03 02:26:02,176 INFO L226 Difference]: Without dead ends: 635 [2022-11-03 02:26:02,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:02,178 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 730 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:02,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1219 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:02,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-11-03 02:26:02,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 331. [2022-11-03 02:26:02,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.4606060606060607) internal successors, (482), 330 states have internal predecessors, (482), 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) [2022-11-03 02:26:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 482 transitions. [2022-11-03 02:26:02,189 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 482 transitions. Word has length 158 [2022-11-03 02:26:02,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:02,190 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 482 transitions. [2022-11-03 02:26:02,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:02,190 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 482 transitions. [2022-11-03 02:26:02,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:26:02,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:02,192 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:02,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:02,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:02,407 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:02,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:02,408 INFO L85 PathProgramCache]: Analyzing trace with hash 391965181, now seen corresponding path program 1 times [2022-11-03 02:26:02,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:02,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855063993] [2022-11-03 02:26:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:02,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:02,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:02,411 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:02,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:26:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:03,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:03,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:04,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:04,492 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:04,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855063993] [2022-11-03 02:26:04,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855063993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:04,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:04,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:26:04,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474267283] [2022-11-03 02:26:04,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:04,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:26:04,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:04,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:26:04,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:26:04,494 INFO L87 Difference]: Start difference. First operand 331 states and 482 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2022-11-03 02:26:04,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:04,902 INFO L93 Difference]: Finished difference Result 675 states and 990 transitions. [2022-11-03 02:26:04,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:26:04,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 158 [2022-11-03 02:26:04,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:04,907 INFO L225 Difference]: With dead ends: 675 [2022-11-03 02:26:04,907 INFO L226 Difference]: Without dead ends: 520 [2022-11-03 02:26:04,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:04,909 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 352 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:04,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 823 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:04,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-11-03 02:26:04,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 335. [2022-11-03 02:26:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.4580838323353293) internal successors, (487), 334 states have internal predecessors, (487), 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) [2022-11-03 02:26:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 487 transitions. [2022-11-03 02:26:04,919 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 487 transitions. Word has length 158 [2022-11-03 02:26:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:04,919 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 487 transitions. [2022-11-03 02:26:04,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2022-11-03 02:26:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 487 transitions. [2022-11-03 02:26:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:26:04,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:04,922 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:04,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:05,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:05,135 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:05,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:05,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1285451519, now seen corresponding path program 1 times [2022-11-03 02:26:05,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:05,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305408743] [2022-11-03 02:26:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:05,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:05,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:05,139 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:05,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:26:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:06,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:06,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:07,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:07,120 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:07,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305408743] [2022-11-03 02:26:07,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305408743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:07,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:07,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:07,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666982945] [2022-11-03 02:26:07,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:07,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:07,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:07,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:07,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:07,123 INFO L87 Difference]: Start difference. First operand 335 states and 487 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:07,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:07,575 INFO L93 Difference]: Finished difference Result 798 states and 1170 transitions. [2022-11-03 02:26:07,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:07,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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 158 [2022-11-03 02:26:07,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:07,580 INFO L225 Difference]: With dead ends: 798 [2022-11-03 02:26:07,580 INFO L226 Difference]: Without dead ends: 643 [2022-11-03 02:26:07,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:07,582 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 726 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:07,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1239 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-11-03 02:26:07,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 337. [2022-11-03 02:26:07,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.4553571428571428) internal successors, (489), 336 states have internal predecessors, (489), 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) [2022-11-03 02:26:07,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 489 transitions. [2022-11-03 02:26:07,593 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 489 transitions. Word has length 158 [2022-11-03 02:26:07,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:07,594 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 489 transitions. [2022-11-03 02:26:07,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:07,595 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 489 transitions. [2022-11-03 02:26:07,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:26:07,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:07,597 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:07,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:07,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:07,811 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:07,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:07,811 INFO L85 PathProgramCache]: Analyzing trace with hash 388058241, now seen corresponding path program 1 times [2022-11-03 02:26:07,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:07,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883964045] [2022-11-03 02:26:07,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:07,814 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:07,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:07,815 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:07,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:26:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:09,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:09,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:09,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:09,843 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:09,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883964045] [2022-11-03 02:26:09,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883964045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:09,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:09,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:26:09,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589016843] [2022-11-03 02:26:09,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:09,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:26:09,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:09,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:26:09,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:26:09,846 INFO L87 Difference]: Start difference. First operand 337 states and 489 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2022-11-03 02:26:10,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:10,243 INFO L93 Difference]: Finished difference Result 675 states and 988 transitions. [2022-11-03 02:26:10,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:26:10,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 158 [2022-11-03 02:26:10,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:10,255 INFO L225 Difference]: With dead ends: 675 [2022-11-03 02:26:10,255 INFO L226 Difference]: Without dead ends: 520 [2022-11-03 02:26:10,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:10,258 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 330 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:10,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 821 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:10,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-11-03 02:26:10,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 343. [2022-11-03 02:26:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.4532163742690059) internal successors, (497), 342 states have internal predecessors, (497), 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) [2022-11-03 02:26:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 497 transitions. [2022-11-03 02:26:10,275 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 497 transitions. Word has length 158 [2022-11-03 02:26:10,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:10,275 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 497 transitions. [2022-11-03 02:26:10,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2022-11-03 02:26:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 497 transitions. [2022-11-03 02:26:10,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:26:10,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:10,278 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:10,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:10,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:10,495 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:10,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:10,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1047589763, now seen corresponding path program 1 times [2022-11-03 02:26:10,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:10,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034422555] [2022-11-03 02:26:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:10,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:10,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:10,499 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:10,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 02:26:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:11,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:11,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:12,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:12,599 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:12,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034422555] [2022-11-03 02:26:12,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034422555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:12,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:12,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:12,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251668654] [2022-11-03 02:26:12,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:12,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:12,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:12,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:12,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:12,601 INFO L87 Difference]: Start difference. First operand 343 states and 497 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:13,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:13,111 INFO L93 Difference]: Finished difference Result 806 states and 1180 transitions. [2022-11-03 02:26:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:13,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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 158 [2022-11-03 02:26:13,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:13,117 INFO L225 Difference]: With dead ends: 806 [2022-11-03 02:26:13,117 INFO L226 Difference]: Without dead ends: 651 [2022-11-03 02:26:13,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:13,118 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 716 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:13,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1236 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-11-03 02:26:13,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 345. [2022-11-03 02:26:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.4505813953488371) internal successors, (499), 344 states have internal predecessors, (499), 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) [2022-11-03 02:26:13,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 499 transitions. [2022-11-03 02:26:13,131 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 499 transitions. Word has length 158 [2022-11-03 02:26:13,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:13,131 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 499 transitions. [2022-11-03 02:26:13,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:13,132 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 499 transitions. [2022-11-03 02:26:13,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:26:13,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:13,133 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:13,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:13,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:13,355 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:13,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:13,355 INFO L85 PathProgramCache]: Analyzing trace with hash 203584261, now seen corresponding path program 1 times [2022-11-03 02:26:13,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:13,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980893527] [2022-11-03 02:26:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:13,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:13,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:13,360 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:13,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:26:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:14,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:14,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:15,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:15,365 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:15,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980893527] [2022-11-03 02:26:15,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980893527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:15,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:15,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:15,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519469569] [2022-11-03 02:26:15,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:15,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:15,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:15,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:15,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:15,370 INFO L87 Difference]: Start difference. First operand 345 states and 499 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:15,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:15,857 INFO L93 Difference]: Finished difference Result 806 states and 1179 transitions. [2022-11-03 02:26:15,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:15,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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 158 [2022-11-03 02:26:15,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:15,862 INFO L225 Difference]: With dead ends: 806 [2022-11-03 02:26:15,862 INFO L226 Difference]: Without dead ends: 651 [2022-11-03 02:26:15,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:15,863 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 709 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:15,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 1212 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:15,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-11-03 02:26:15,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 347. [2022-11-03 02:26:15,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.4479768786127167) internal successors, (501), 346 states have internal predecessors, (501), 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) [2022-11-03 02:26:15,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 501 transitions. [2022-11-03 02:26:15,877 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 501 transitions. Word has length 158 [2022-11-03 02:26:15,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:15,878 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 501 transitions. [2022-11-03 02:26:15,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:15,878 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 501 transitions. [2022-11-03 02:26:15,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:26:15,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:15,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:15,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:16,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:16,101 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:16,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:16,102 INFO L85 PathProgramCache]: Analyzing trace with hash 131197703, now seen corresponding path program 1 times [2022-11-03 02:26:16,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:16,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372513739] [2022-11-03 02:26:16,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:16,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:16,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:16,106 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:16,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 02:26:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:17,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:17,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:18,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:18,083 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:18,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372513739] [2022-11-03 02:26:18,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372513739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:18,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:18,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:26:18,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305043789] [2022-11-03 02:26:18,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:18,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:26:18,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:18,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:26:18,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:26:18,085 INFO L87 Difference]: Start difference. First operand 347 states and 501 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2022-11-03 02:26:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:18,496 INFO L93 Difference]: Finished difference Result 675 states and 985 transitions. [2022-11-03 02:26:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:26:18,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 158 [2022-11-03 02:26:18,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:18,502 INFO L225 Difference]: With dead ends: 675 [2022-11-03 02:26:18,503 INFO L226 Difference]: Without dead ends: 520 [2022-11-03 02:26:18,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:18,504 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 307 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:18,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 818 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:18,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-11-03 02:26:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 351. [2022-11-03 02:26:18,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.4457142857142857) internal successors, (506), 350 states have internal predecessors, (506), 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) [2022-11-03 02:26:18,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 506 transitions. [2022-11-03 02:26:18,515 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 506 transitions. Word has length 158 [2022-11-03 02:26:18,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:18,515 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 506 transitions. [2022-11-03 02:26:18,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2022-11-03 02:26:18,516 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 506 transitions. [2022-11-03 02:26:18,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:26:18,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:18,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:18,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-11-03 02:26:18,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:18,735 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:18,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:18,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1517401097, now seen corresponding path program 1 times [2022-11-03 02:26:18,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:18,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46645979] [2022-11-03 02:26:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:18,738 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:18,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:18,739 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:18,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 02:26:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:20,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:20,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:20,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:20,752 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:20,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46645979] [2022-11-03 02:26:20,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46645979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:20,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:20,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:20,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643871123] [2022-11-03 02:26:20,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:20,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:20,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:20,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:20,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:20,754 INFO L87 Difference]: Start difference. First operand 351 states and 506 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:21,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:21,171 INFO L93 Difference]: Finished difference Result 814 states and 1189 transitions. [2022-11-03 02:26:21,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:21,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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 158 [2022-11-03 02:26:21,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:21,176 INFO L225 Difference]: With dead ends: 814 [2022-11-03 02:26:21,176 INFO L226 Difference]: Without dead ends: 659 [2022-11-03 02:26:21,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:21,177 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 705 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:21,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 1232 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:21,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-11-03 02:26:21,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 353. [2022-11-03 02:26:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.4431818181818181) internal successors, (508), 352 states have internal predecessors, (508), 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) [2022-11-03 02:26:21,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 508 transitions. [2022-11-03 02:26:21,188 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 508 transitions. Word has length 158 [2022-11-03 02:26:21,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:21,189 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 508 transitions. [2022-11-03 02:26:21,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:21,189 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 508 transitions. [2022-11-03 02:26:21,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:26:21,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:21,190 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:21,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:21,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:21,407 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:21,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:21,408 INFO L85 PathProgramCache]: Analyzing trace with hash -854338165, now seen corresponding path program 1 times [2022-11-03 02:26:21,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:21,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988838334] [2022-11-03 02:26:21,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:21,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:21,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:21,412 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:21,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 02:26:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:22,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:22,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:23,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:23,520 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:23,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988838334] [2022-11-03 02:26:23,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988838334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:23,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:23,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:23,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525601799] [2022-11-03 02:26:23,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:23,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:23,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:23,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:23,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:23,522 INFO L87 Difference]: Start difference. First operand 353 states and 508 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:23,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:23,971 INFO L93 Difference]: Finished difference Result 814 states and 1188 transitions. [2022-11-03 02:26:23,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:23,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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 158 [2022-11-03 02:26:23,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:23,975 INFO L225 Difference]: With dead ends: 814 [2022-11-03 02:26:23,975 INFO L226 Difference]: Without dead ends: 659 [2022-11-03 02:26:23,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:23,976 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 698 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:23,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1208 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:23,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-11-03 02:26:24,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 355. [2022-11-03 02:26:24,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.4406779661016949) internal successors, (510), 354 states have internal predecessors, (510), 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) [2022-11-03 02:26:24,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 510 transitions. [2022-11-03 02:26:24,003 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 510 transitions. Word has length 158 [2022-11-03 02:26:24,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:24,003 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 510 transitions. [2022-11-03 02:26:24,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:24,004 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 510 transitions. [2022-11-03 02:26:24,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:26:24,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:24,005 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:24,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:24,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:24,227 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:24,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:24,227 INFO L85 PathProgramCache]: Analyzing trace with hash -713789555, now seen corresponding path program 1 times [2022-11-03 02:26:24,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:24,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888188915] [2022-11-03 02:26:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:24,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:24,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:24,231 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:24,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 02:26:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:25,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:25,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:26,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:26,229 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:26,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888188915] [2022-11-03 02:26:26,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888188915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:26,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:26,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:26,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793143010] [2022-11-03 02:26:26,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:26,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:26,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:26,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:26,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:26,231 INFO L87 Difference]: Start difference. First operand 355 states and 510 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:26,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:26,841 INFO L93 Difference]: Finished difference Result 666 states and 969 transitions. [2022-11-03 02:26:26,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:26,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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 158 [2022-11-03 02:26:26,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:26,844 INFO L225 Difference]: With dead ends: 666 [2022-11-03 02:26:26,844 INFO L226 Difference]: Without dead ends: 511 [2022-11-03 02:26:26,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:26,845 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 485 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:26,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 933 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:26:26,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-11-03 02:26:26,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 357. [2022-11-03 02:26:26,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.4382022471910112) internal successors, (512), 356 states have internal predecessors, (512), 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) [2022-11-03 02:26:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 512 transitions. [2022-11-03 02:26:26,856 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 512 transitions. Word has length 158 [2022-11-03 02:26:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:26,857 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 512 transitions. [2022-11-03 02:26:26,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 512 transitions. [2022-11-03 02:26:26,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:26:26,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:26,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:26,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:27,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:27,075 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:27,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:27,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1091648779, now seen corresponding path program 1 times [2022-11-03 02:26:27,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:27,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157697710] [2022-11-03 02:26:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:27,078 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:27,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:27,079 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:27,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 02:26:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:28,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:28,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:29,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:29,237 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:29,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157697710] [2022-11-03 02:26:29,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157697710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:29,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:29,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:26:29,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003992217] [2022-11-03 02:26:29,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:29,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:26:29,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:29,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:26:29,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:26:29,240 INFO L87 Difference]: Start difference. First operand 357 states and 512 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2022-11-03 02:26:29,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:29,667 INFO L93 Difference]: Finished difference Result 675 states and 981 transitions. [2022-11-03 02:26:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:26:29,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 158 [2022-11-03 02:26:29,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:29,669 INFO L225 Difference]: With dead ends: 675 [2022-11-03 02:26:29,670 INFO L226 Difference]: Without dead ends: 520 [2022-11-03 02:26:29,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:29,670 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 282 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:29,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 813 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-11-03 02:26:29,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 359. [2022-11-03 02:26:29,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.4357541899441342) internal successors, (514), 358 states have internal predecessors, (514), 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) [2022-11-03 02:26:29,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 514 transitions. [2022-11-03 02:26:29,681 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 514 transitions. Word has length 158 [2022-11-03 02:26:29,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:29,682 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 514 transitions. [2022-11-03 02:26:29,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2022-11-03 02:26:29,682 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 514 transitions. [2022-11-03 02:26:29,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:26:29,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:29,684 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:29,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:29,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:29,900 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:29,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:29,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1514350605, now seen corresponding path program 1 times [2022-11-03 02:26:29,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:29,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093937420] [2022-11-03 02:26:29,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:29,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:29,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:29,904 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:29,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 02:26:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:31,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:31,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:31,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:31,998 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:31,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093937420] [2022-11-03 02:26:31,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093937420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:31,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:31,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:31,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870747068] [2022-11-03 02:26:31,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:32,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:32,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:32,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:32,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:32,001 INFO L87 Difference]: Start difference. First operand 359 states and 514 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:32,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:32,484 INFO L93 Difference]: Finished difference Result 822 states and 1197 transitions. [2022-11-03 02:26:32,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:32,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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 158 [2022-11-03 02:26:32,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:32,487 INFO L225 Difference]: With dead ends: 822 [2022-11-03 02:26:32,487 INFO L226 Difference]: Without dead ends: 667 [2022-11-03 02:26:32,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:32,488 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 691 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:32,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 1226 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:32,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-11-03 02:26:32,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 361. [2022-11-03 02:26:32,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.4333333333333333) internal successors, (516), 360 states have internal predecessors, (516), 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) [2022-11-03 02:26:32,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 516 transitions. [2022-11-03 02:26:32,499 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 516 transitions. Word has length 158 [2022-11-03 02:26:32,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:32,500 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 516 transitions. [2022-11-03 02:26:32,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:32,500 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 516 transitions. [2022-11-03 02:26:32,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:26:32,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:32,502 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:32,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:32,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:32,723 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:32,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:32,723 INFO L85 PathProgramCache]: Analyzing trace with hash -174593137, now seen corresponding path program 1 times [2022-11-03 02:26:32,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:32,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510642073] [2022-11-03 02:26:32,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:32,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:32,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:32,727 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:32,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 02:26:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:34,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:34,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:34,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:34,791 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:34,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510642073] [2022-11-03 02:26:34,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510642073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:34,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:34,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:34,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950176197] [2022-11-03 02:26:34,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:34,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:34,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:34,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:34,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:34,793 INFO L87 Difference]: Start difference. First operand 361 states and 516 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:35,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:35,293 INFO L93 Difference]: Finished difference Result 822 states and 1196 transitions. [2022-11-03 02:26:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:35,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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 158 [2022-11-03 02:26:35,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:35,298 INFO L225 Difference]: With dead ends: 822 [2022-11-03 02:26:35,298 INFO L226 Difference]: Without dead ends: 667 [2022-11-03 02:26:35,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:35,299 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 684 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:35,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1202 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:26:35,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-11-03 02:26:35,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 363. [2022-11-03 02:26:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.430939226519337) internal successors, (518), 362 states have internal predecessors, (518), 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) [2022-11-03 02:26:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 518 transitions. [2022-11-03 02:26:35,311 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 518 transitions. Word has length 158 [2022-11-03 02:26:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:35,311 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 518 transitions. [2022-11-03 02:26:35,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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) [2022-11-03 02:26:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 518 transitions. [2022-11-03 02:26:35,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:26:35,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:35,313 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:35,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-03 02:26:35,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:35,535 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:35,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:35,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1762941039, now seen corresponding path program 1 times [2022-11-03 02:26:35,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:35,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066537245] [2022-11-03 02:26:35,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:35,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:35,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:35,540 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:35,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 02:26:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:37,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:26:37,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:38,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:39,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:39,441 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:39,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066537245] [2022-11-03 02:26:39,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066537245] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:26:39,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1590714753] [2022-11-03 02:26:39,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:39,444 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:26:39,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:26:39,447 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:26:39,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-03 02:26:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:42,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:26:42,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:43,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:43,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1590714753] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:26:43,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812901471] [2022-11-03 02:26:43,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:43,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:43,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:43,995 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:43,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-03 02:26:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:45,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:26:45,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:46,670 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:46,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:47,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812901471] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:26:47,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:26:47,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 28 [2022-11-03 02:26:47,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521639417] [2022-11-03 02:26:47,725 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:26:47,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 02:26:47,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:47,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 02:26:47,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:26:47,728 INFO L87 Difference]: Start difference. First operand 363 states and 518 transitions. Second operand has 28 states, 28 states have (on average 21.678571428571427) internal successors, (607), 28 states have internal predecessors, (607), 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) [2022-11-03 02:26:48,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:48,429 INFO L93 Difference]: Finished difference Result 615 states and 876 transitions. [2022-11-03 02:26:48,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:26:48,430 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 21.678571428571427) internal successors, (607), 28 states have internal predecessors, (607), 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 158 [2022-11-03 02:26:48,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:48,433 INFO L225 Difference]: With dead ends: 615 [2022-11-03 02:26:48,433 INFO L226 Difference]: Without dead ends: 460 [2022-11-03 02:26:48,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 917 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 6 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 02:26:48,434 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 513 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:48,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 3047 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 58 Unchecked, 0.0s Time] [2022-11-03 02:26:48,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-03 02:26:48,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2022-11-03 02:26:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.4074074074074074) internal successors, (646), 459 states have internal predecessors, (646), 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) [2022-11-03 02:26:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 646 transitions. [2022-11-03 02:26:48,448 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 646 transitions. Word has length 158 [2022-11-03 02:26:48,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:48,449 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 646 transitions. [2022-11-03 02:26:48,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 21.678571428571427) internal successors, (607), 28 states have internal predecessors, (607), 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) [2022-11-03 02:26:48,450 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 646 transitions. [2022-11-03 02:26:48,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:26:48,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:48,451 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:48,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:48,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:48,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:49,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:49,071 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:49,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:49,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1504775601, now seen corresponding path program 1 times [2022-11-03 02:26:49,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:49,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247604641] [2022-11-03 02:26:49,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:49,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:49,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:49,075 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:49,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 02:26:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:50,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:26:50,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:51,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:52,471 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:52,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247604641] [2022-11-03 02:26:52,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247604641] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:26:52,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1970055540] [2022-11-03 02:26:52,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:52,471 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:26:52,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:26:52,472 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:26:52,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-03 02:26:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:55,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:26:55,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:56,065 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:56,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:56,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1970055540] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:26:56,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751053135] [2022-11-03 02:26:56,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:56,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:56,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:56,759 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:56,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-03 02:26:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:58,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:26:58,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:59,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:00,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751053135] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:00,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:27:00,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 28 [2022-11-03 02:27:00,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680651682] [2022-11-03 02:27:00,234 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:27:00,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 02:27:00,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:00,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 02:27:00,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:27:00,236 INFO L87 Difference]: Start difference. First operand 460 states and 646 transitions. Second operand has 28 states, 28 states have (on average 21.821428571428573) internal successors, (611), 28 states have internal predecessors, (611), 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) [2022-11-03 02:27:00,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:00,962 INFO L93 Difference]: Finished difference Result 785 states and 1096 transitions. [2022-11-03 02:27:00,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:27:00,963 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 21.821428571428573) internal successors, (611), 28 states have internal predecessors, (611), 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 158 [2022-11-03 02:27:00,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:00,967 INFO L225 Difference]: With dead ends: 785 [2022-11-03 02:27:00,967 INFO L226 Difference]: Without dead ends: 630 [2022-11-03 02:27:00,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 917 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 6 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=216, Invalid=1266, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 02:27:00,968 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 499 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:00,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 2907 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 36 Unchecked, 0.0s Time] [2022-11-03 02:27:00,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-11-03 02:27:00,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2022-11-03 02:27:00,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 1.3751987281399045) internal successors, (865), 629 states have internal predecessors, (865), 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) [2022-11-03 02:27:00,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 865 transitions. [2022-11-03 02:27:00,992 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 865 transitions. Word has length 158 [2022-11-03 02:27:00,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:00,993 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 865 transitions. [2022-11-03 02:27:00,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 21.821428571428573) internal successors, (611), 28 states have internal predecessors, (611), 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) [2022-11-03 02:27:00,993 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 865 transitions. [2022-11-03 02:27:00,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:27:00,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:00,995 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:01,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:01,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:01,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:01,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:27:01,607 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:01,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:01,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1980845069, now seen corresponding path program 1 times [2022-11-03 02:27:01,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:01,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379503040] [2022-11-03 02:27:01,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:01,610 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:01,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:01,611 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:01,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 02:27:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:03,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:27:03,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:03,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:04,828 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:04,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379503040] [2022-11-03 02:27:04,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379503040] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:04,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [768431471] [2022-11-03 02:27:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:04,829 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:27:04,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:27:04,830 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:27:04,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-03 02:27:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:07,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:27:07,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:08,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:09,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [768431471] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:09,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616399930] [2022-11-03 02:27:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:09,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:09,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:09,048 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:09,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-03 02:27:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:10,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:27:10,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:11,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:11,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616399930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:11,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:27:11,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 16 [2022-11-03 02:27:11,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198998769] [2022-11-03 02:27:11,722 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:27:11,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 02:27:11,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:11,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 02:27:11,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:27:11,723 INFO L87 Difference]: Start difference. First operand 630 states and 865 transitions. Second operand has 16 states, 16 states have (on average 19.4375) internal successors, (311), 16 states have internal predecessors, (311), 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) [2022-11-03 02:27:12,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:12,201 INFO L93 Difference]: Finished difference Result 870 states and 1205 transitions. [2022-11-03 02:27:12,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:27:12,202 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.4375) internal successors, (311), 16 states have internal predecessors, (311), 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 158 [2022-11-03 02:27:12,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:12,203 INFO L225 Difference]: With dead ends: 870 [2022-11-03 02:27:12,203 INFO L226 Difference]: Without dead ends: 715 [2022-11-03 02:27:12,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 924 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:27:12,208 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 425 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:12,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1711 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 41 Unchecked, 0.3s Time] [2022-11-03 02:27:12,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-11-03 02:27:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2022-11-03 02:27:12,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 1.3641456582633054) internal successors, (974), 714 states have internal predecessors, (974), 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) [2022-11-03 02:27:12,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 974 transitions. [2022-11-03 02:27:12,243 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 974 transitions. Word has length 158 [2022-11-03 02:27:12,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:12,243 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 974 transitions. [2022-11-03 02:27:12,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.4375) internal successors, (311), 16 states have internal predecessors, (311), 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) [2022-11-03 02:27:12,244 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 974 transitions. [2022-11-03 02:27:12,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:27:12,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:12,246 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:12,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:12,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-03 02:27:12,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:12,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:12,864 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:12,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:12,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2038103371, now seen corresponding path program 1 times [2022-11-03 02:27:12,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:12,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274222567] [2022-11-03 02:27:12,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:12,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:12,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:12,868 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:12,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 02:27:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:14,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:27:14,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:15,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:15,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:16,208 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:16,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274222567] [2022-11-03 02:27:16,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274222567] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:16,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [525564538] [2022-11-03 02:27:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:16,209 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:27:16,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:27:16,215 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:27:16,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-03 02:27:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:19,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:27:19,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:19,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:20,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [525564538] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:20,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328559742] [2022-11-03 02:27:20,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:20,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:20,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:20,408 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:20,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-03 02:27:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:21,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:27:21,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:22,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:23,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328559742] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:23,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:27:23,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 16 [2022-11-03 02:27:23,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15490792] [2022-11-03 02:27:23,182 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:27:23,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 02:27:23,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:23,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 02:27:23,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:27:23,184 INFO L87 Difference]: Start difference. First operand 715 states and 974 transitions. Second operand has 16 states, 16 states have (on average 19.5625) internal successors, (313), 16 states have internal predecessors, (313), 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) [2022-11-03 02:27:23,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:23,517 INFO L93 Difference]: Finished difference Result 1328 states and 1798 transitions. [2022-11-03 02:27:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:27:23,517 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.5625) internal successors, (313), 16 states have internal predecessors, (313), 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 158 [2022-11-03 02:27:23,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:23,519 INFO L225 Difference]: With dead ends: 1328 [2022-11-03 02:27:23,519 INFO L226 Difference]: Without dead ends: 1173 [2022-11-03 02:27:23,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 945 GetRequests, 924 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:27:23,520 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 486 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:23,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 2333 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2022-11-03 02:27:23,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-11-03 02:27:23,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1076. [2022-11-03 02:27:23,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1075 states have (on average 1.3255813953488371) internal successors, (1425), 1075 states have internal predecessors, (1425), 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) [2022-11-03 02:27:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1425 transitions. [2022-11-03 02:27:23,561 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1425 transitions. Word has length 158 [2022-11-03 02:27:23,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:23,561 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1425 transitions. [2022-11-03 02:27:23,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.5625) internal successors, (313), 16 states have internal predecessors, (313), 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) [2022-11-03 02:27:23,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1425 transitions. [2022-11-03 02:27:23,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:27:23,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:23,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:23,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:23,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:24,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:24,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:24,179 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:24,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:24,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2038162953, now seen corresponding path program 1 times [2022-11-03 02:27:24,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:24,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127667058] [2022-11-03 02:27:24,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:24,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:24,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:24,183 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:24,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 02:27:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:25,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 02:27:25,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:27,257 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:27,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:35,345 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:35,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127667058] [2022-11-03 02:27:35,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127667058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:35,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [528451095] [2022-11-03 02:27:35,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:35,345 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:27:35,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:27:35,348 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:27:35,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2022-11-03 02:27:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:38,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 02:27:38,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:39,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:41,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [528451095] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:41,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603498736] [2022-11-03 02:27:41,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:41,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:41,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:41,444 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:41,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-03 02:27:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:42,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-03 02:27:42,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:27:44,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:27:51,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603498736] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:51,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:27:51,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 15, 15] total 38 [2022-11-03 02:27:51,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614681324] [2022-11-03 02:27:51,545 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:27:51,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-03 02:27:51,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:51,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-03 02:27:51,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1271, Unknown=3, NotChecked=0, Total=1406 [2022-11-03 02:27:51,547 INFO L87 Difference]: Start difference. First operand 1076 states and 1425 transitions. Second operand has 38 states, 38 states have (on average 16.42105263157895) internal successors, (624), 38 states have internal predecessors, (624), 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) [2022-11-03 02:27:54,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:54,431 INFO L93 Difference]: Finished difference Result 1419 states and 1922 transitions. [2022-11-03 02:27:54,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-03 02:27:54,431 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 16.42105263157895) internal successors, (624), 38 states have internal predecessors, (624), 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 158 [2022-11-03 02:27:54,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:54,435 INFO L225 Difference]: With dead ends: 1419 [2022-11-03 02:27:54,436 INFO L226 Difference]: Without dead ends: 1417 [2022-11-03 02:27:54,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 913 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=358, Invalid=3179, Unknown=3, NotChecked=0, Total=3540 [2022-11-03 02:27:54,438 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 1364 mSDsluCounter, 8433 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 8740 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:54,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1364 Valid, 8740 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 167 Unchecked, 0.1s Time] [2022-11-03 02:27:54,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2022-11-03 02:27:54,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1307. [2022-11-03 02:27:54,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1306 states have (on average 1.3545176110260337) internal successors, (1769), 1306 states have internal predecessors, (1769), 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) [2022-11-03 02:27:54,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1769 transitions. [2022-11-03 02:27:54,491 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1769 transitions. Word has length 158 [2022-11-03 02:27:54,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:54,491 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 1769 transitions. [2022-11-03 02:27:54,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 16.42105263157895) internal successors, (624), 38 states have internal predecessors, (624), 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) [2022-11-03 02:27:54,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1769 transitions. [2022-11-03 02:27:54,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 02:27:54,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:54,494 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:54,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:54,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:54,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-03 02:27:55,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:55,110 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:55,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:55,111 INFO L85 PathProgramCache]: Analyzing trace with hash -522759475, now seen corresponding path program 1 times [2022-11-03 02:27:55,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:55,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237410063] [2022-11-03 02:27:55,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:55,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:55,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:55,114 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:55,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 02:27:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:56,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-03 02:27:56,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:59,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:28:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:28:03,449 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:28:03,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237410063] [2022-11-03 02:28:03,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237410063] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:28:03,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1982462730] [2022-11-03 02:28:03,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:03,450 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:28:03,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:28:03,451 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:28:03,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2022-11-03 02:28:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:06,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-03 02:28:06,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:28:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:28:08,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:29:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:29:09,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1982462730] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:29:09,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28040834] [2022-11-03 02:29:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:09,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:09,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:09,177 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:29:09,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e77212c-50b7-4d1b-b814-13979136a0e0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process